4.1 44 m Prepreg Blades - Windpark · PDF fileVestas to recipient as to this general...

Document no.: 961763 V02 Weight, Dimensions and Centre of Gravity of 44 m

Blades

Technical Data

Date: 2010-09-27

Issued by: Technology R&D Class: 1

Type: T09 - Manual Page 3 of 3

Vestas Wind Systems A/S · Alsvej 21 · 8940 Randers SV · Denmark · www.vestas.com

4 Technical Data

Figure 4-1: 44 m blade.

4.1 44 m Prepreg Blades

Component L

[mm]

Whj

[mm]

H

[mm]

Lc

[mm]

Lcg

[mm]

W

[kg]

Blades

44000 1800 3512 9000 11200 6700

Blades

including

transport

frames (HJ)

44150 2440 3300 9000 11700 7900

Table 4-1: Technical data 44 m prepreg blade.

4.2 44 m Wood Carbon Blades

Component L

[mm]

Whj

[mm]

H

[mm]

Lc

[mm]

Lcg

[mm]

W

[kg]

Blades

44000 1800 3499 9000 13000 7050

Blades

including

transport

frames (HJ)

44150 2440 3300 9000 13500 8250

Table 4-2: Technical data 44 m wood carbon blade.

R.1000

Bijlage 2-2b –

Specificaties Vestas V90 – 3MW

Vestas Wind Systems A/S · Hedeager 42 · 8200 Aarhus N · Denmark · www.vestas.com

Restricted

Document no.: 0053-3707 V03

2016-05-06

General Description 3MW Platform

VESTAS PROPRIETARY NOTICE: This document contains valuable confidential information of Vestas Wind Systems A/S. It is protected by copyright law as an unpublished work. Vestas reserves all patent, copyright, trade secret, and other proprietary rights to it. The information in this document may not be used, reproduced, or disclosed except if and to the extent rights are expressly granted by Vestas in writing and subject to applicable conditions. Vestas disclaims all warranties except as expressly granted by written agreement and is not responsible for unauthorized uses, for which it may pursue legal remedies against responsible parties.



Table of contents

Date: 2016-05-06

Document owner: Platform Management Restricted

Type: T05 - General Description Page 2 of 43


Table of contents

1 Introduction .......................................................................................................................... 5 2 General Description ............................................................................................................. 6 3 Mechanical Design ............................................................................................................... 7 3.1 Rotor ...................................................................................................................................... 7 3.2 Blades .................................................................................................................................... 7 3.3 Blade Bearing ........................................................................................................................ 7 3.4 Pitch System .......................................................................................................................... 8 3.5 Hub ........................................................................................................................................ 8 3.6 Main Shaft ............................................................................................................................. 8 3.7 Main Bearing Housing ............................................................................................................ 9 3.8 Main Bearing .......................................................................................................................... 9 3.9 Gearbox ................................................................................................................................. 9 3.10 Generator Bearings ................................................................................................................ 9 3.11 High-Speed Shaft Coupling .................................................................................................. 10 3.12 Yaw System ......................................................................................................................... 10 3.13 Crane ................................................................................................................................... 10 3.14 Towers ................................................................................................................................. 10 3.15 Nacelle Bedplate and Cover ................................................................................................ 11 3.16 Thermal Conditioning System .............................................................................................. 11 3.16.1 Generator and Converter Cooling ........................................................................................ 12 3.16.2 Gearbox and Hydraulic Cooling ........................................................................................... 12 3.16.3 Transformer Cooling ............................................................................................................ 12 3.16.4 Nacelle Cooling .................................................................................................................... 12 3.16.5 Optional Air Intake Hatches ................................................................................................. 12 4 Electrical Design ................................................................................................................ 12 4.1 Generator ............................................................................................................................ 12 4.2 Converter ............................................................................................................................. 13 4.3 HV Transformer ................................................................................................................... 13 4.3.1 IEC 50 Hz/60 Hz version ...................................................................................................... 14 4.3.2 Ecodesign - IEC 50 Hz/60 Hz version .................................................................................. 15 4.3.3 IEEE 60Hz version ............................................................................................................... 17 4.4 HV Cables ........................................................................................................................... 18 4.5 HV Switchgear ..................................................................................................................... 19 4.5.1 IEC 50/60Hz version ............................................................................................................ 20 4.5.2 IEEE 60Hz version ............................................................................................................... 21 4.6 AUX System ........................................................................................................................ 21 4.7 Wind Sensors ...................................................................................................................... 22 4.8 Vestas Multi Processor (VMP) Controller ............................................................................. 22 4.9 Uninterruptible Power Supply (UPS) .................................................................................... 22 5 Turbine Protection Systems.............................................................................................. 23 5.1 Braking Concept .................................................................................................................. 23 5.2 Short Circuit Protections ...................................................................................................... 24 5.3 Overspeed Protection .......................................................................................................... 24 5.4 Arc Detection ....................................................................................................................... 24 5.5 Smoke Detection ................................................................................................................. 24 5.6 Lightning Protection of Blades, Nacelle, Hub and Tower ...................................................... 24 5.7 EMC .................................................................................................................................... 25 5.8 Earthing ............................................................................................................................... 25 5.9 Corrosion Protection ............................................................................................................ 26 6 Safety .................................................................................................................................. 26 6.1 Access ................................................................................................................................. 26 6.2 Escape ................................................................................................................................. 26



Table of contents

Date: 2016-05-06




6.3 Rooms/Working Areas ......................................................................................................... 27 6.4 Floors, Platforms, Standing, and Working Places ................................................................ 27 6.5 Service Lift ........................................................................................................................... 27 6.6 Climbing Facilities ................................................................................................................ 27 6.7 Moving Parts, Guards, and Blocking Devices ....................................................................... 27 6.8 Lights ................................................................................................................................... 27 6.9 Emergency Stop .................................................................................................................. 27 6.10 Power Disconnection ........................................................................................................... 27 6.11 Fire Protection/First Aid ....................................................................................................... 28 6.12 Warning Signs ..................................................................................................................... 28 6.13 Manuals and Warnings ........................................................................................................ 28 7 Environment ....................................................................................................................... 28 7.1 Chemicals ............................................................................................................................ 28 8 Design Codes ..................................................................................................................... 28 8.1 Design Codes – Structural Design ....................................................................................... 28 9 Colours ............................................................................................................................... 29 9.1 Nacelle Colour ..................................................................................................................... 29 9.2 Tower Colour ....................................................................................................................... 29 9.3 Blade Colour ........................................................................................................................ 30 10 Operational Envelope and Performance Guidelines ....................................................... 30 10.1 Climate and Site Conditions ................................................................................................. 30 10.2 Operational Envelope – Temperature and Altitude ............................................................... 30 10.3 Operational Envelope – Temperature and Altitude Derating in 3.45 MW Mode 0 ................. 31 10.4 Operational Envelope – Temperature and Altitude Derating in 3.6 MW Power

Optimized Mode (PO1) ........................................................................................................ 31 10.5 Operational Envelope – Temperature and Altitude Derating in 3.3 MW Load Optimized

Mode (LO1).......................................................................................................................... 32 10.6 Operational Envelope – Temperature and Altitude Derating in 3.0 MW Load Optimized

Mode (LO2).......................................................................................................................... 32 10.7 Operational Envelope – Grid Connection ............................................................................. 33 10.8 Operational Envelope – Reactive Power Capability in 3.45 MW Mode 0 .............................. 34 10.9 Operational Envelope – Reactive Power Capability in 3.45 MW Reactive Power

Optimized Mode (QO1) ........................................................................................................ 35 10.10 Operational Envelope – Reactive Power Capability in 3.6 MW Power Optimized Mode

(PO1) ................................................................................................................................... 36 10.11 Operational Envelope – Reactive Power Capability in 3.3 MW Load Optimized Mode

(LO1) ................................................................................................................................... 37 10.12 Operational Envelope – Reactive Power Capability in 3.0 MW Load Optimized Mode

(LO2) ................................................................................................................................... 38 10.13 Performance – Fault Ride Through ...................................................................................... 39 10.14 Performance – Reactive Current Contribution ...................................................................... 39 10.14.1 Symmetrical Reactive Current Contribution.......................................................................... 39 10.14.2 Asymmetrical Reactive Current Contribution ........................................................................ 40 10.15 Performance – Multiple Voltage Dips ................................................................................... 40 10.16 Performance – Active and Reactive Power Control .............................................................. 40 10.17 Performance – Voltage Control ............................................................................................ 41 10.18 Performance – Frequency Control ....................................................................................... 41 10.19 Distortion – Immunity ........................................................................................................... 41 10.20 Main Contributors to Own Consumption ............................................................................... 41 11 Drawings ............................................................................................................................ 42 11.1 Structural Design – Illustration of Outer Dimensions ............................................................ 42 11.2 Structural Design – Side View Drawing ................................................................................ 42 12 General Reservations, Notes and Disclaimers ................................................................ 43



Table of contents

Date: 2016-05-06




Recipient acknowledges that (i) this General Description is provided for recipient's information

only, and, does not create or constitute a warranty, guarantee, promise, commitment, or other

representation (Commitment) by Vestas Wind Systems or any of its affiliated or subsidiary

companies (Vestas), all of which are disclaimed by Vestas and (ii) any and all Commitments by

Vestas to recipient as to this general description (or any of the contents herein) are to be

contained exclusively in signed written contracts between recipient and Vestas, and not within

this document.

See general reservations, notes and disclaimers (including, section 12, p. 43) to this general description.



Introduction

Date: 2016-05-06



Vestas Wind Systems A/S · Hedeager 42 · 8200 Arhus N · Denmark · www.vestas.com

1 Introduction

The 3MW Platform wind turbine configurations covered by this General

Description are listed below with designations according to IEC61400-22.

The maximum DIBt 2012 wind class is listed where applicable.

Please refer to the Performance Specification for the relevant turbine variant for

full wind class definition.

This General Description contains data and descriptions common among the

platform variants.

The variant specific performance can be found in the Performance Specifications

for the turbine variant and operational mode required.

Turbine Type

Class

Turbine Type | Operating Mode

V105-3.45 MW

V105-3.45 MW IEC IA 50/60 Hz | Mode 0

V105-3.45 MW IEC IA 50/60 Hz | Reactive Power Optimized Mode (QO1)

V105-3.6 MW IEC IA 50/60 Hz | Power Optimized Mode (PO1)

V105-3.3 MW IEC IA 50/60 Hz | Load Optimized Mode (LO1)


V112-3.45 MW

V112-3.45 MW IEC IA 50/60 H0z | Mode 0

V112-3.45 MW IEC IA 50/60 Hz | Reactive Power Optimized Mode (QO1)

V112-3.6 MW IEC IA 50/60 Hz | Power Optimized Mode (PO1)



V117-3.45 MW

V117-3.45 MW IEC IB + IIA 50/60 Hz | Mode 0

V117-3.45 MW IEC IB + IIA 50/60 Hz | Reactive Power Optimized Mode (QO1)

V117-3.6 MW IEC S + IIA 50/60 Hz | Power Optimized Mode (PO1)

V117-3.3 MW IEC IB + IIA 50/60 Hz | Load Optimized Mode (LO1)

V117-3.0 MW IEC IB + IIA 50/60 Hz | Load Optimized Mode (LO2)

V126-3.45 MW

Low Torque

(LTq)

V126-3.45 MW IEC IIB + IIIA 50/60 Hz LTq | Mode 0

V126-3.45 MW IEC IIB + IIIA 50/60 Hz LTq | Reactive Power Optimized Mode (QO1)

V126-3.3 MW IEC IIB + IIIA 50/60 Hz LTq | Load Optimized Mode (LO1)

V126-3.0 MW IEC IIB + IIIA 50/60 Hz LTq | Load Optimized Mode (LO2)

V126-3.45 MW

High Torque

(HTq)

V126-3.45 MW IEC IIA + IIIA 50/60 Hz HTq | Mode 0

V126-3.45 MW IEC IIA + IIIA 50/60 Hz HTq | Reactive Power Optimized Mode (QO1)

V126-3.6 MW IEC IIA + IIIA 50/60 Hz HTq | Power Optimized Mode (PO1)

V126-3.3 MW IEC IIA + IIIA 50/60 Hz HTq | Load Optimized Mode (LO1)

V126-3.0 MW IEC IIA + IIIA 50/60 Hz HTq | Load Optimized Mode (LO2)

V126-3.45 MW WZ 3 GK II TK A 50 Hz HTq | Mode 0

V126-3.45 MW WZ 3 GK II TK A 50 Hz HTq | Reactive Power Optim. Mode (QO1)



General Description

Date: 2016-05-06




Turbine Type

Class

Turbine Type | Operating Mode

V136-3.45 MW

V136-3.45 MW IEC IIIA 50/60 Hz | Mode 0

V136-3.45 MW IEC IIIA 50/60 Hz | Reactive Power Optimized Mode (QO1)

V136-3.3 MW IEC IIIA 50/60 Hz | Load Optimized Mode (LO1)

V136-3.0 MW IEC IIIA 50/60 Hz | Load Optimized Mode (LO2)

V136-3.45 MW WZ 2 GK II TK A 50 Hz | Mode 0

V136-3.45 MW WZ 2 GK II TK A 50 Hz | Reactive Power Optimized Mode (QO1)

Table 1-1: 3MW Platform turbine configurations covered.

2 General Description

Vestas 3MW Platform comprises a family of wind turbines sharing a common

design basis.

The 3MW Platform family of wind turbines includes V105-3.45 MW, V112-3.45

MW, V117-3.45 MW, V126-3.45 MW and V136-3.45 MW.

These turbines are pitch regulated upwind turbines with active yaw and a three-

blade rotor.

The wind turbine family provides rotors with a diameter in the range 105 m to 136

m and a rated output power of 3.45 MW.

A 3.45 MW Reactive Power Optimized Mode (QO1) is available for all variants.

A 3.6 MW Power Optimized Mode (PO1) is available for all variants except V136-

3.45 MW and V126-3.45 MW Low Torque (LTq).

Also, a 3.3 MW Load Optimized Mode (LO1) and a 3.0 MW Load Optimized

Mode (LO2) are available for all variants.

The wind turbine family utilises the OptiTip® concept and a power system based

on an induction generator and full-scale converter. With these features, the wind

turbine is able to operate the rotor at variable speed and thereby maintain the

power output at or near rated power even in high wind speed. At low wind speed,

the OptiTip® concept and the power system work together to maximise the power

output by operating at the optimal rotor speed and pitch angle.

Operating the wind turbine in the 3.45 MW Reactive Power Optimized Mode

(QO1) is achieved by applying an extended ambient temperature derate strategy

compared with 3.45 MW Mode 0 operation.

Operating the wind turbine in the 3.6 MW Power Optimized Mode (PO1) is

achieved by applying an extended ambient temperature derate strategy and

reduced reactive power capability compared with 3.45 MW Mode 0 operation.



Mechanical Design

Date: 2016-05-06




3 Mechanical Design

3.1 Rotor

The wind turbine is equipped with a rotor consisting of three blades and a hub.

The blades are controlled by the microprocessor pitch control system OptiTip®.

Based on the prevailing wind conditions, the blades are continuously positioned

to optimise the pitch angle.

Rotor V105 V112 V117 V126 V136

Diameter 105 m 112 m 117 m 126 m 136 m

Swept Area 8659 m2 9852 m2 10751 m2 12469 m2 14527 m2

Speed, Dynamic

Operation Range 8.3-17.6 8.1-17.6 6.7-17.5

5.9-16.3

(6.2-16.3) 5.6-15.3

Rotational

Direction Clockwise (front view)

Orientation Upwind

Tilt 6°

Hub Coning 4°

No. of Blades 3

Aerodynamic

Brakes Full feathering

Table 3-1: Rotor data

3.2 Blades

The blades are made of carbon and fibreglass and consist of two airfoil shells

bonded to a supporting beam.

Blades V105 V112 V117 V126 V136

Type Description Airfoil shells bonded to supporting

beam

Infused structural

airfoil shell

Blade Length 51.15 m 54.65 m 57.15 m 61.66 m 66.66 m

Material Fibreglass reinforced epoxy, carbon fibres and Solid Metal

Tip (SMT).

Blade Connection Steel roots inserted

Airfoils High-lift profile

Maximum Chord 4.0 m 4.1 m

Table 3-2: Blades data

3.3 Blade Bearing

The blade bearings are double-row four-point contact ball bearings.



Mechanical Design

Date: 2016-05-06




Blade Bearing

Lubrication Grease

Table 3-3: Blade bearing data

3.4 Pitch System

The turbine is equipped with a pitch system for each blade and a distributor

block, all located in the hub. Each pitch system is connected to the distributor

block with flexible hoses. The distributor block is connected to the pipes of the

hydraulic rotating transfer unit in the hub by means of three hoses (pressure line,

return line and drain line).

Each pitch system consists of a hydraulic cylinder mounted to the hub and a

piston rod mounted to the blade bearing via a torque arm shaft. Valves facilitating

operation of the pitch cylinder are installed on a pitch block bolted directly onto

the cylinder.

Pitch System

Type Hydraulic

Number 1 per blade

Range -10° to 90°

Table 3-4: Pitch system data

Hydraulic System

Main Pump Two redundant internal-gear oil pumps

Pressure 260 bar

Filtration 3 µm (absolute)

Table 3-5: Hydraulic system data.

3.5 Hub

The hub supports the three blades and transfers the reaction loads to the main

bearing and the torque to the gearbox. The hub structure also supports blade

bearings and pitch cylinders.

Hub

Type Cast ball shell hub

Material Cast iron

Table 3-6: Hub data

3.6 Main Shaft

The main shaft transfers the reaction forces to the main bearing and the torque to

the gearbox.



Mechanical Design

Date: 2016-05-06




Main Shaft

Type Description Hollow shaft

Material Cast iron

Table 3-7: Main shaft data

3.7 Main Bearing Housing

The main bearing housing covers the main bearing and is the first connection

point for the drive train system to the bedplate.

Main Bearing Housing

Material Cast iron

Table 3-8: Main bearing housing data

3.8 Main Bearing

The main bearing carries all thrust loads.

Main Bearing

Type Double-row spherical roller bearing

Lubrication Automatic grease lubrication

Table 3-9: Main bearing data

3.9 Gearbox

The main gear converts the low-speed rotation of the rotor to high-speed

generator rotation.

The disc brake is mounted on the high-speed shaft. The gearbox lubrication

system is a pressure-fed system.

Gearbox

Type Planetary stages + one helical stage

Gear House Material Cast

Lubrication System Pressure oil lubrication

Backup Lubrication System Oil sump filled from external gravity tank

Total Gear Oil Volume 1000-1200

Oil Cleanliness Codes ISO 4406-/15/12

Shaft Seals Labyrinth

Table 3-10: Gearbox data

3.10 Generator Bearings

The bearings are grease lubricated and grease is supplied continuously from an

automatic lubrication unit.



Mechanical Design

Date: 2016-05-06




3.11 High-Speed Shaft Coupling

The coupling transmits the torque of the gearbox high-speed output shaft to the

generator input shaft.

The coupling consists of two 4-link laminate packages and a fibreglass

intermediate tube with two metal flanges.

The coupling is fitted to two-armed hubs on the brake disc and the generator hub.

3.12 Yaw System

The yaw system is an active system based on a robust pre-tensioned plain yaw-

bearing concept with PETP as friction material.

Yaw System

Type Plain bearing system

Material Forged yaw ring heat-treated.

Plain bearings PETP

Yawing Speed (50 Hz) 0.45°/sec.

Yawing Speed (60 Hz) 0.55°/sec.

Table 3-11: Yaw system data

Yaw Gear

Type Multiple stages geared

Ratio Total 944:1

Rotational Speed at Full Load 1.4 rpm at output shaft

Table 3-12: Yaw gear data

3.13 Crane

The nacelle houses the internal safe working load (SWL) service crane. The

crane is a single system hoist.

Crane

Lifting Capacity Maximum 800 kg

Table 3-13: Crane data

3.14 Towers

Tubular towers with flange connections, certified according to relevant type

approvals, are available in different standard heights. The towers are designed

with the majority of internal welded connections replaced by magnet supports to

create a predominantly smooth-walled tower.

Magnets provide load support in a horizontal direction and internals, such as

platforms, ladders, etc., are supported vertically (that is, in the gravitational

direction) by a mechanical connection. The smooth tower design reduces the



Mechanical Design

Date: 2016-05-06




required steel thickness, rendering the tower lighter compared to one with all

internals welded to the tower shells.

Available hub heights are listed in the Performance Specification for each turbine

variant. Designated hub heights include a distance from the foundation section to

the ground level of approximately 0.2 m depending on the thickness of the

bottom flange and a distance from tower top flange to centre of the hub of 2.2 m.

Towers

Type Cylindrical/conical tubular

Table 3-14: Tower structure data

3.15 Nacelle Bedplate and Cover

The nacelle cover is made of fibreglass. Hatches are positioned in the floor for

lowering or hoisting equipment to the nacelle and evacuation of personnel. The

roof section is equipped with wind sensors and skylights. The skylights can be

opened from inside the nacelle to access the roof and from outside to access the

nacelle. Access from the tower to the nacelle is through the yaw system.

The nacelle bedplate is in two parts and consists of a cast iron front part and a

girder structure rear part. The front of the nacelle bedplate is the foundation for

the drive train and transmits forces from the rotor to the tower through the yaw

system. The bottom surface is machined and connected to the yaw bearing and

the yaw gears are bolted to the front nacelle bedplate.

The crane girders are attached to the top structure. The lower beams of the

girder structure are connected at the rear end. The rear part of the bedplate

serves as the foundation for controller panels, the cooling system and

transformer. The nacelle cover is installed on the nacelle bedplate.

Type Description Material

Nacelle Cover GRP

Bedplate Front Cast iron

Bedplate Rear Girder structure

Table 3-15: Nacelle bedplate and cover data

3.16 Thermal Conditioning System

The thermal conditioning system consists of a few robust components:

The Vestas CoolerTop® located on top of the rear end of the nacelle. The

CoolerTop® is a free flow cooler, thus ensuring that there are no electrical

components in the thermal conditioning system located outside the

nacelle.

The Liquid Cooling System, which serves the gearbox, hydraulic systems,

generator and converter is driven by an electrical pumping system.

The transformer forced air cooling comprised of an electrical fan.



Electrical Design

Date: 2016-05-06




3.16.1 Generator and Converter Cooling

The generator and converter cooling systems operate in parallel. A dynamic flow

valve mounted in the generator cooling circuit divides the cooling liquid flow. The

cooling liquid removes heat from the generator and converter unit using a free-air

flow radiator placed on the top of the nacelle. In addition to the generator,

converter unit and radiator, the circulation system includes an electrical pump

and a three-way thermostatic valve.

3.16.2 Gearbox and Hydraulic Cooling

The gearbox and hydraulic cooling systems are coupled in parallel. A dynamic

flow valve mounted in the gearbox cooling circuit divides the cooling flow. The

cooling liquid removes heat from the gearbox and the hydraulic power unit

through heat exchangers and a free-air flow radiator placed on the top of the

nacelle. In addition to the heat exchangers and the radiator, the circulation

system includes an electrical pump and a three-way thermostatic valve.

3.16.3 Transformer Cooling

The transformer is equipped with forced-air cooling. The ventilator system

consists of a central fan, located below the converter and an air duct leading the

air to locations beneath and between the high voltage and low voltage windings

of the transformer.

3.16.4 Nacelle Cooling

Hot air generated by mechanical and electrical equipment is dissipated from the

nacelle by a fan system located in the nacelle.

3.16.5 Optional Air Intake Hatches

Specific air intakes in the nacelle can optionally be fitted with hatches which can

be operated as a part of the thermal control strategy. In case of lost grid to the

turbine, the hatches will automatically be closed.

4 Electrical Design

4.1 Generator

The generator is a three-phase asynchronous induction generator with cage rotor

that is connected to the grid through a full-scale converter. The generator housing

allows the circulation of cooling air within the stator and rotor. The air-to-water

heat exchange occurs in an external heat exchanger.

Generator

Type Asynchronous with cage rotor

Rated Power [PN] 3650 kW / 3800 kW

Frequency [fN] 0-100 Hz

Voltage, Stator [UNS] 3 x 750 V (at rated speed)

Number of Poles 4/6

Winding Type Form with VPI (Vacuum Pressurized Impregnation)



Electrical Design

Date: 2016-05-06




Generator

Winding Connection Star or Delta

Rated rpm 1450-1550 rpm

Overspeed Limit Acc.

to IEC (2 minutes)

2400 rpm

Generator Bearing Hybrid/ceramic

Temperature Sensors,

Stator

3 PT100 sensors placed at hot spots and 3 as back-

up

Temperature Sensors,

Bearings

1 per bearing

Insulation Class F or H

Enclosure IP54

Table 4-1: Generator data

4.2 Converter

The converter is a full-scale converter system controlling both the generator and

the power quality delivered to the grid. The converter consists of 3 machine-side

converter units and 3 line-side converter units operating in parallel with a

common controller.

The converter controls conversion of variable frequency AC power from the

generator into fixed frequency AC power with desired active and reactive power

levels (and other grid connection parameters) suitable for the grid. The converter

is located in the nacelle and has a grid side voltage rating of 650 V. The

generator side voltage rating is up to 750 V dependent on generator speed.

Converter

Rated Apparent Power [SN] 4400 kVA

Rated Grid Voltage 3 x 650 V

Rated Generator Voltage 3 x 750 V

Rated Grid Current 3900 A (≤30°C ambient) / 3950 (≤20°C ambient)

Rated Generator Current 3400 A (≤30°C ambient) / 3450 (≤20°C ambient)

Enclosure IP54

Table 4-2: Converter data

4.3 HV Transformer

The step-up HV transformer is located in a separate locked room in the back of

the nacelle.

The transformer is a three-phase, two-winding, dry-type transformer that is self-

extinguishing. The windings are delta-connected on the high-voltage side unless

otherwise specified.

The transformer comes in different versions depending on the market where it is

intended to be installed.



Electrical Design

Date: 2016-05-06




For 50 Hz regions the transformer is as default designed according to IEC

standards. However on special request, a 60 Hz transformer based on

IEC standards could also be delivered. Refer to Table 4-3.

For turbines installed in Member States of the European Union, it is

required to fulfil the Ecodesign regulation No 548/2014 set by the

European Commission. Refer to Table 4-4.

For 60 Hz regions the transformer is as default designed mainly according

to IEEE standards but on areas not covered by IEEE standards, the

design is also based on parts of the IEC standards. Refer to Table 4-5.

4.3.1 IEC 50 Hz/60 Hz version

Transformer

Type description Dry-type cast resin transformer.

Basic layout 3 phase, 2 winding transformer.

Applied standards IEC 60076-11, IEC 60076-16, IEC 61936-1.

Cooling method AF

Rated power 4000 kVA

Rated voltage, turbine side

Um 1.1kV 0.650 kV

Rated voltage, grid side

Um 12.0kV 10.0-11.0 kV

Um 24.0kV 11.1-22.0 kV

Um 36.0kV 22.1-33.0 kV

Um 41.5kV 33.1-36.0 kV

Insulation level AC / LI / LIC

Um 1.1kV 31 / - / - kV

Um 12.0kV 281 / 75 / 75 kV

Um 24.0kV 501 / 125 / 125 kV

Um 36.0kV 701 / 170 / 170 kV

Um 41.5kV 801 / 170 / 170 kV

Off-circuit tap changer ±2 x 2.5 %

Frequency 50 Hz / 60Hz

Vector group Dyn5 / YNyn0

No-load loss 2 ~6.0 kW

Load loss @ rated power HV, 120C 2 ~30.1 kW

No-load reactive power 2 ~16 kVAr

Full load reactive power 2 ~345 kVAr

No-load current 2 ~0.5 %

Positive sequence short-circuit

impedance @ rated power, 120C 3

~9.0 %


resistance@ rated power, 120C 2

~0.8 %

Zero sequence short-circuit

impedance@ rated power, 120C 2

~8.2 %



~0.7 %

Inrush peak current 2

Dyn5 6-9 x În

YNyn0 8-12 x În



Electrical Design

Date: 2016-05-06




Transformer

Half crest time 2 ~0.7 s

Sound power level 80 dB(A)

Average temperature rise at max altitude

90 K

Max altitude 4 2000 m

Insulation class 155 (F)

Environmental class E2

Climatic class C2

Fire behaviour class F1

Corrosion class C4

Weight 9500 kg

Temperature monitoring PT100 sensors in LV windings and core

Overvoltage protection Surge arresters on HV terminals

Temporary earthing 3 x Ø20 mm earthing ball points

Table 4-3: Transformer data for IEC 50 Hz/60 Hz version

1 @1000m. According to IEC 60076-11, AC test voltage is altitude dependent. All

values are preliminary. 2 Based on an average of calculated values across voltages and manufacturers.

All values are preliminary.

3 Subjected to standard IEC tolerances. All values are preliminary. 4 Transformer max altitude may be adjusted to match turbine location.

4.3.2 Ecodesign - IEC 50 Hz/60 Hz version

Transformer

Type description Ecodesign dry-type cast resin transformer.


Applied standards IEC 60076-11, IEC 60076-16, IEC 61936-1, Commission Regulation No 548/2014.

Cooling method AF



Um 1.1kV 0.650 kV


Um 12.0kV 10.0-11.0 kV

Um 24.0kV 11.1-22.0 kV

Um 36.0kV 22.1-33.0 kV

Um 40.5kV 33.1-36.0 kV

Insulation level AC / LI / LIC

Um 1.1kV 31 / - / - kV

Um 12.0kV 281 / 75 / 75 kV

Um 24.0kV 501 / 125 / 125 kV

Um 36.0kV 701 / 170 / 170 kV

Um 40.5kV 801 / 170 / 170 kV

NOTE



Electrical Design

Date: 2016-05-06




Transformer


Frequency 50 Hz / 60 Hz


Peak Efficiency Index (PEI) 2 Ecodesign requirement

Um 12.0kV > 99.348

Um 24.0kV > 99.348

Um 36.0kV > 99.348

Um 40.5kV > 99.158

No-load loss 2

Um 12.0kV < 5800 W

Um 24.0kV < 5800 W

Um 36.0kV < 5800 W

Um 40.5kV < 6900 W

Load loss @ rated power HV, 120C 2

Um 12.0kV < 29300 W

Um 24.0kV < 29300 W

Um 36.0kV < 29300 W

Um 40.5kV < 37850 W






~9.0 %



~0.8 %


impedance@ rated power, 120C 3

~8.2 %



~0.7 %


Dyn5 6-9 x În

YNyn0 8-12 x În

Half crest time 3 ~ 0.7 s



90 K


Insulation class 155 (F)


Climatic class C2


Corrosion class C4

Weight 10000 kg




Table 4-4: Transformer data for Ecodesign IEC 50 Hz/60 Hz version.



Electrical Design

Date: 2016-05-06




1 @1000m. According to IEC 60076-11, AC test voltage is altitude dependent. All

values are preliminary. 2 For Ecodesign transformers, PEI is the legal requirement and is calculated

according to the Commission Regulation based on rated power, no-load and load

losses. Losses are maximum values and will not simultaneously occur in a

specific design as this will be incompliant with the PEI requirement. All values are

preliminary. 3 Based on an average of calculated values across voltages and manufacturers.

All values are preliminary. 4 Subjected to standard IEC tolerances. All values are preliminary. 5 Transformer max altitude may be adjusted to match turbine location.

4.3.3 IEEE 60Hz version

Transformer

Type description Dry-type cast resin transformer.


Applied standards UL 1562, CSA C22.2 No. 47, IEEE C57.12, IEC 60076-11, IEC 60076-16, IEC 61936-1.

Cooling method AFA



NLL 1.2 kV 0.650 kV


NLL 15.0 kV 10.0-15.0 kV

NLL 25.0 kV 15.1-25.0 kV

NLL 34.5 kV 25.1-34.5 kV

Insulation level AC / LI & LIC

NLL 1.2 kV 41 / +10 kV

NLL 15.0 kV 341 / +95 kV

NLL 25.0 kV 501 / +125 kV

NLL 34.5 kV 701 / (+150 & -170) or +170 kV


Frequency 60 Hz


No-load loss 2 ~6.0 kW

Load loss @ rated power HV, 120C 2 ~30.1 kW






~9.0 %


resistance @ rated power, 120C 2

~0.7 %



~8.3 %

Zero sequence short-circuit ~0.7 %

NOTE



Electrical Design

Date: 2016-05-06




Transformer

resistance @ rated power, 120C 2


Dyn5 6-9 x În

YNyn0 8-12 x În

Half crest time 2 ~ 0.7 s



90 K


Insulation class 150C


Climatic class C2


Corrosion class C4

Weight 9500 kg




Table 4-5: Transformer data for IEEE 60 Hz version

1 @1000m. According to IEEE C57.12, AC test voltage is altitude dependent. All

values are preliminary. 2 Based on an average of calculated values across voltages and manufacturers.

All values are preliminary.

3 Subjected to standard IEEE C57.12 tolerances. All values are preliminary. 4 Transformer max altitude may be adjusted to match turbine location.

4.4 HV Cables

The high-voltage cable runs from the transformer in the nacelle down the tower to

the HV switchgear located at the bottom of the tower. The high-voltage cable is a

four-core, rubber-insulated, halogen-free, high-voltage cable.

HV Cables

High-Voltage Cable Insulation

Compound

Improved ethylene-propylene (EP) based

material-EPR or high modulus or hard

grade ethylene-propylene rubber-HEPR

Conductor Cross Section 3 x 70 / 70 mm2

Maximum Voltage 24 kV for 10.0-22.0 kV rated voltage

42 kV for 22.1-36.0 kV rated voltage

Table 4-6: HV cables data

NOTE



Electrical Design

Date: 2016-05-06




4.5 HV Switchgear

A gas insulated switchgear is installed in the bottom of the tower as an integrated

part of the turbine. Its controls are integrated with the turbine safety system which

monitors the condition of the switchgear and high voltage safety related devices

in the turbine. This ensures all protection devices are fully operational whenever

high voltage components in the turbine are energised. The earthing switch of the

circuit breaker contains a trapped-key interlock system with its counterpart

installed on the access door to the transformer room in order to avoid

unauthorized access to the transformer room during live condition.

The switchgear is available in three variants with increasing features, see Table

4-7. Beside the increase in features, the switchgear can be configured depending

on the number of grid cables planned to enter the individual turbine. The design

of the switchgear solution is optimized such grid cables can be connected to the

switchgear even before the tower is installed and still maintain its protection

toward weather conditions and internal condensation due to a gas tight packing.

The switchgear is available in an IEC version and in an IEEE version. The IEEE

version is however only available in the highest voltage class. The electrical

parameters of the switchgear are seen in Table 4-8 for the IEC version and in

Table 4-9 for the IEEE version.

HV Switchgear

Variant Basic Streamline Standard

IEC standards

IEEE standards

Vacuum circuit breaker panel

Overcurrent, short-circuit and earth fault

protection

Disconnector / earthing switch in circuit

breaker panel

Voltage Presence Indicator System for

circuit breaker

Voltage Presence Indicator System for grid

cables

Double grid cable connection

Triple grid cable connection

Preconfigured relay settings

Turbine safety system integration

Redundant trip coil circuits

Trip coil supervision

Pendant remote control from outside of

tower

Sequential energization

Reclose blocking function



Electrical Design

Date: 2016-05-06




HV Switchgear

Variant Basic Streamline Standard

Heating elements

Trapped-key interlock system for circuit

breaker panel

UPS power back-up for protection circuits

Motor operation of circuit breaker

Cable panel for grid cables (configurable)

Switch disconnector panels for grid cables

– max three panels (configurable)

Earthing switch for grid cables

Internal arc classification

Supervision on MCB’s

Motor operation of switch disconnector

SCADA ready

SCADA operation of circuit breaker

SCADA operation of switch disconnector

Table 4-7: HV switchgear variants and features.

4.5.1 IEC 50/60Hz version

HV Switchgear

Type description Gas Insulated Switchgear

Applied standards IEC 62271-103 IEC 62271-1, 62271-100, 62271-102, 62271-200, IEC 60694

Insulation medium SF6

Rated voltage

Ur 24.0kV 10.0-22.0 kV

Ur 36.0kV 22.1-33.0 kV

Ur 40.5kV 33.1-36.0 kV

Rated insulation level AC // LI Common value / across isolation distance

Ur 24.0kV 50 / 60 // 125 / 145 kV

Ur 36.0kV 70 / 80 // 170 / 195 kV

Ur 40.5kV 85 / 90 // 185 / 215 kV

Rated frequency 50 Hz / 60 Hz

Rated normal current 630 A

Rated Short-time withstand current

Ur 24.0kV 20 kA

Ur 36.0kV 25 kA

Ur 40.5kV 25 kA

Rated peak withstand current 50 / 60 Hz

Ur 24.0kV 50 / 52 kA

Ur 36.0kV 62.5 / 65 kA



Electrical Design

Date: 2016-05-06




HV Switchgear

Ur 40.5kV 62.5 / 65 kA

Rated duration of short-circuit 1 s

Internal arc classification (option)

Ur 24.0kV IAC A FLR 20 kA, 1 s



Connection interface Outside cone plug-in bushings, IEC interface C1.

Loss of service continuity category LSC2

Ingress protection

Gas tank IP 65

Enclosure IP 2X

LV cabinet IP 3X

Corrosion class C3

Table 4-8: HV switchgear data for IEC version.

4.5.2 IEEE 60Hz version

HV Switchgear

Type description Gas Insulated Switchgear

Applied standards IEEE 37.20.3, IEEE C37.20.4, IEC 62271-200, ISO 12944.

Insulation medium SF6

Rated voltage

Ur 38.0kV 22.1-36.0 kV

Rated insulation level AC / LI 70 / 150 kV

Rated frequency 60 Hz

Rated normal current 600 A

Rated Short-time withstand current 25 kA

Rated peak withstand current 65 kA

Rated duration of short-circuit 1 s

Internal arc classification (option) IAC A FLR 25 kA, 1 s

Connection interface grid cables Outside cone plug-in bushings, IEEE 386 interface type deadbreak, 600A.

Ingress protection

Gas tank NEMA 4X / IP 65

Enclosure NEMA 2 / IP 2X

LV cabinet NEMA 2 / IP 3X

Corrosion class C3

Table 4-9: HV switchgear data for IEEE version.

4.6 AUX System

The AUX system is supplied from a separate 650/400/230 V transformer located

in the nacelle inside the converter cabinet. All motors, pumps, fans and heaters

are supplied from this system.

230 V consumers are generally supplied from a 400/230 V transformer located in

the tower base. Internal heating and ventilation of cabinets as well as specific

option 230 V consumers are supplied from the auxiliary transformer in the

converter cabinet.



Electrical Design

Date: 2016-05-06




Power Sockets

Single Phase (Nacelle) 230 V (16 A) (standard)

110 V (16 A) (option)

2 x 55 V (16 A) (option)

Single Phase (Tower Platforms) 230 V (10 A) (standard)

110 V (16 A) (option)

2 x 55 V (16 A) (option)

Three Phase (Nacelle and Tower

Base)

3 x 400 V (16 A)

Table 4-10: AUX system data

4.7 Wind Sensors

The turbine is either equipped with two ultrasonic wind sensors or optional one

ultrasonic wind sensor and one mechanical wind vane and anemometer. The

sensors have built-in heaters to minimise interference from ice and snow. The

wind sensors are redundant, and the turbine is able to operate with one sensor

only.

4.8 Vestas Multi Processor (VMP) Controller

The turbine is controlled and monitored by the VMP8000 control system.

VMP8000 is a multiprocessor control system comprised of main controller,

distributed control nodes, distributed IO nodes and ethernet switches and other

network equipment. The main controller is placed in the tower bottom of the

turbine. It runs the control algorithms of the turbine, as well as all IO

communication.

The communications network is a time triggered Ethernet network (TTEthernet).

The VMP8000 control system serves the following main functions:

Monitoring and supervision of overall operation.

Synchronizing of the generator to the grid during connection sequence.

Operating the wind turbine during various fault situations.

Automatic yawing of the nacelle.

OptiTip® - blade pitch control.

Reactive power control and variable speed operation.

Noise emission control.

Monitoring of ambient conditions.

Monitoring of the grid.

Monitoring of the smoke detection system.

4.9 Uninterruptible Power Supply (UPS)

During grid outage, an UPS system will ensure power supply for specific

components.

The UPS system is built by 3 subsystems:



Turbine Protection Systems

Date: 2016-05-06




1. 230V AC UPS for all power backup to nacelle and hub control systems

2. 24V DC UPS for power backup to tower base control systems and

optional SCADA Power Plant Controller.

3. 230V AC UPS for power backup to internal lights in tower and nacelle.

Internal light in the hub is fed from built-in batteries in the light armature.

UPS

Backup Time Standard Optional

Control System*

(230V AC and 24V DC UPS) 15 min Up to 400 min**

Internal Lights

(230V AC UPS)

30 min 60 min***

Optional SCADA Power

Plant Controller

(24V DC UPS)

N/A 48 hours****

Table 4-11: UPS data

*The control system includes: the turbine controller (VMP8000), HV switchgear

functions, and remote control system.

**Requires upgrade of the 230V UPS for control system with extra batteries.

***Requires upgrade of the 230V UPS for internal light with extra batteries.

****Requires upgrade of the 24V DC UPS with extra batteries.

For alternative backup times, consult Vestas.

5 Turbine Protection Systems

5.1 Braking Concept

The main brake on the turbine is aerodynamic. Stopping the turbine is done by

full feathering the three blades (individually turning each blade). Each blade has

a hydraulic accumulator to supply power for turning the blade.

In addition, there is a mechanical disc brake on the high-speed shaft of the

gearbox with a dedicated hydraulic system. The mechanical brake is only used

as a parking brake and when activating the emergency stop buttons.

NOTE




Date: 2016-05-06




5.2 Short Circuit Protections

Breakers Breaker for Aux.

Power.

(not settled)

Breaker for

Converter Modules

(not settled)

Breaking Capacity, Icu, Ics TBD TBD

Making Capacity, Icm TBD TBD

Table 5-1: Short circuit protection data

5.3 Overspeed Protection

The generator rpm and the main shaft rpm are registered by inductive sensors

and calculated by the wind turbine controller to protect against overspeed and

rotating errors.

The safety-related partition of the VMP8000 control system monitors the rotor

rpm. In case of an overspeed situation, the safety-related partition of the

VMP8000 control system activates the emergency feathered position (full

feathering) of the three blades independently of the non-safety related partition of

VMP8000 control system.

Overspeed Protection

Sensors Type Inductive

Trip Level (variant dependent) 15.3-17.6 rpm / 2000 (generator rpm)

Table 5-3: Overspeed protection data

5.4 Arc Detection

The turbine is equipped with an Arc Detection system including multiple optical

arc detection sensors placed in the HV transformer compartment and the

converter cabinet. The Arc Detection system is connected to the turbine safety

system ensuring immediate opening of the HV switchgear if an arc is detected.

5.5 Smoke Detection

The turbine is equipped with a Smoke Detection system including multiple smoke

detection sensors placed in the nacelle (above the disc brake), in the transformer

compartment, in main electrical cabinets in the nacelle and above the HV

switchgear in the tower base. The Smoke Detection system is connected to the

turbine safety system ensuring immediate opening of the HV switchgear if smoke

is detected.

5.6 Lightning Protection of Blades, Nacelle, Hub and Tower

The Lightning Protection System (LPS) helps protect the wind turbine against the

physical damage caused by lightning strikes. The LPS consists of five main parts:

Lightning receptors. All lightning receptor surfaces on the blades including the

Solid Metal Tips (SMT) are unpainted as standard.




Date: 2016-05-06




Down conducting system (a system to conduct the lightning current down

through the wind turbine to help avoid or minimise damage to the LPS itself or

other parts of the wind turbine).

Protection against overvoltage and overcurrent.

Shielding against magnetic and electrical fields.

Earthing system.

Lightning Protection Design Parameters Protection Level I

Current Peak Value imax [kA] 200

Impulse Charge Qimpulse [C] 100

Long Duration Charge Qlong [C] 200

Total Charge Qtotal [C] 300

Specific Energy W/R [MJ/] 10

Average Steepness di/dt [kA/s] 200

Table 5-4: Lightning protection design parameters

The Lightning Protection System is designed according to IEC standards (see

section 8 Design Codes, p. 28).

5.7 EMC

The turbine and related equipment fulfils the EU Electromagnetic Compatibility

(EMC) legislation:

DIRECTIVE 2014/30/EU OF THE EUROPEAN PARLIAMENT AND OF THE

COUNCIL of 26 February 2014 on the harmonisation of the laws of the

Member States relating to electromagnetic compatibility.

5.8 Earthing

The Vestas Earthing System consists of a number of individual earthing

electrodes interconnected as one joint earthing system.

The Vestas Earthing System includes the TN-system and the Lightning

Protection System for each wind turbine. It works as an earthing system for the

medium voltage distribution system within the wind farm.

The Vestas Earthing System is adapted for the different types of turbine

foundations. A separate set of documents describe the earthing system in detail,

depending on the type of foundation.

In terms of lightning protection of the wind turbine, Vestas has no separate

requirements for a certain minimum resistance to remote earth (measured in

ohms) for this system. The earthing for the lightning protection system is based

on the design and construction of the Vestas Earthing System.

A primary part of the Vestas Earthing System is the main earth bonding bar

placed where all cables enter the wind turbine. All earthing electrodes are

NOTE



Safety

Date: 2016-05-06




connected to this main earth bonding bar. Additionally, equipotential connections

are made to all cables entering or leaving the wind turbine.

Requirements in the Vestas Earthing System specifications and work

descriptions are minimum requirements from Vestas and IEC. Local and national

requirements, as well as project requirements, may require additional measures.

5.9 Corrosion Protection

Classification of corrosion protection is according to ISO 12944-2.

Corrosion Protection External Areas Internal Areas

Nacelle C5-M C3

Hub C5-M C3

Tower C5-I C3

Table 5-5: Corrosion protection data for nacelle, hub, and tower

6 Safety

The safety specifications in this section provide limited general information about

the safety features of the turbine and are not a substitute for Buyer and its agents

taking all appropriate safety precautions, including but not limited to (a) complying

with all applicable safety, operation, maintenance, and service agreements,

instructions, and requirements, (b) complying with all safety-related laws,

regulations, and ordinances, and (c) conducting all appropriate safety training

and education.

6.1 Access

Access to the turbine from the outside is through a door located at the entrance

platform approximately 3 meter above ground level. The door is equipped with a

lock. Access to the top platform in the tower is by a ladder or service lift. Access

to the nacelle from the top platform is by ladder. Access to the transformer room

in the nacelle is controlled with a lock. Unauthorised access to electrical

switchboards and power panels in the turbine is prohibited according to IEC

60204-1 2006.

6.2 Escape

In addition to the normal access routes, alternative escape routes from the

nacelle are through the crane hatch, from the spinner by opening the nose cone,

or from the roof of the nacelle. Rescue equipment is placed in the nacelle.

The hatch in the roof can be opened from both the inside and outside.

Escape from the service lift is by ladder.

An emergency response plan, placed in the turbine, describes evacuation and

escape routes.



Safety

Date: 2016-05-06




6.3 Rooms/Working Areas

The tower and nacelle are equipped with power sockets for electrical tools for

service and maintenance of the turbine.

6.4 Floors, Platforms, Standing, and Working Places

All floors have anti-slip surfaces.

There is one floor per tower section.

Rest platforms are provided at intervals of 9 metres along the tower ladder

between platforms.

Foot supports are placed in the turbine for maintenance and service purposes.

6.5 Service Lift

The turbine is delivered with a service lift installed as an option.

6.6 Climbing Facilities

A ladder with a fall arrest system (rigid rail) is installed through the tower.

There are anchor points in the tower, nacelle and hub, and on the roof for

attaching fall arrest equipment (full-body harness).

Over the crane hatch there is an anchor point for the emergency descent

equipment.

Anchor points are coloured yellow and are calculated and tested to 22.2 kN.

6.7 Moving Parts, Guards, and Blocking Devices

All moving parts in the nacelle are shielded.

The turbine is equipped with a rotor lock to block the rotor and drive train.

Blocking the pitch of the cylinder can be done with mechanical tools in the hub.

6.8 Lights

The turbine is equipped with lights in the tower, nacelle, transformer room, and

hub.

There is emergency light in case of the loss of electrical power.

6.9 Emergency Stop

There are emergency stop buttons in the nacelle, hub and bottom of the tower.

6.10 Power Disconnection

The turbine is equipped with breakers to allow for disconnection from all power

sources during inspection or maintenance. The switches are marked with signs

and are located in the nacelle and bottom of the tower.



Environment

Date: 2016-05-06




6.11 Fire Protection/First Aid

A handheld 5-6 kg CO2 fire extinguisher, first aid kit and fire blanket are required

to be located in the nacelle during service and maintenance.

A handheld 5-6 kg CO2 fire extinguisher is required only during service and

maintenance activities, unless a permanently mounted fire extinguisher

located in the nacelle is mandatorily required by authorities.

First aid kits are required only during service and maintenance activities.

Fire blankets are required only during non-electrical hot work activities.

6.12 Warning Signs

Warning signs placed inside or on the turbine must be reviewed before operating

or servicing the turbine.

6.13 Manuals and Warnings

The Vestas Corporate OH&S Manual and manuals for operation, maintenance

and service of the turbine provide additional safety rules and information for

operating, servicing or maintaining the turbine.

7 Environment

7.1 Chemicals

Chemicals used in the turbine are evaluated according to the Vestas Wind

Systems A/S Environmental System certified according to ISO 14001:2004. The

following chemicals are used in the turbine:

Anti-freeze to help prevent the cooling system from freezing.

Gear oil for lubricating the gearbox.

Hydraulic oil to pitch the blades and operate the brake.

Grease to lubricate bearings.

Various cleaning agents and chemicals for maintenance of the turbine.

8 Design Codes

8.1 Design Codes – Structural Design

The turbine design has been developed and tested with regard to, but not limited

to, the following main standards:

Design Codes

Nacelle and Hub IEC 61400-1 Edition 3

EN 50308

Tower IEC 61400-1 Edition 3

Eurocode 3

Blades DNV-OS-J102

IEC 1024-1



Colours

Date: 2016-05-06




Design Codes

IEC 60721-2-4

IEC 61400 (Part 1, 12 and 23)

IEC WT 01 IEC

DEFU R25

ISO 2813

DS/EN ISO 12944-2

Gearbox ISO 81400-4

Generator IEC 60034

Transformer IEC 60076-11, IEC 60076-16, CENELEC

HD637 S1

Lightning Protection

IEC 62305-1: 2006

IEC 62305-3: 2006

IEC 62305-4: 2006

IEC 61400-24:2010

Rotating Electrical Machines IEC 34

Safety of Machinery,

Safety-related Parts of Control

Systems

IEC 13849-1

Safety of Machinery – Electrical

Equipment of Machines IEC 60204-1

Table 8-1: Design codes

9 Colours

9.1 Nacelle Colour

Colour of Vestas Nacelles

Standard Nacelle Colour RAL 7035 (light grey)

Standard Logo Vestas

Table 9-1: Colour, nacelle

9.2 Tower Colour

Colour of Vestas Tower Section

External: Internal:

Standard Tower Colour RAL 7035 (light grey) RAL 9001 (cream white)

Table 9-2: Colour, tower



Operational Envelope and Performance Guidelines

Date: 2016-05-06




9.3 Blade Colour

Blade Colour

Standard Blade Colour

RAL 7035 (light grey). All lightning receptor

surfaces on the blades including the Solid Metal

Tips (SMT) are unpainted as standard.

Tip-End Colour Variants RAL 2009 (traffic orange), RAL 3020 (traffic red)

Gloss < 30% DS/EN ISO 2813

Table 9-3: Colour, blades

10 Operational Envelope and Performance Guidelines

Actual climate and site conditions have many variables and should be considered

in evaluating actual turbine performance. The design and operating parameters

set forth in this section do not constitute warranties, guarantees, or

representations as to turbine performance at actual sites.

10.1 Climate and Site Conditions

Values refer to hub height:

Extreme Design Parameters

Wind Climate All

Ambient Temperature Interval (Standard Temperature

Turbine) -40° to +50°C

Table 10-1: Extreme design parameters

10.2 Operational Envelope – Temperature and Altitude

Values below refer to hub height and are determined by the sensors and control

system of the turbine.

Operational Envelope – Temperature

Ambient Temperature Interval

(Standard Turbine)

-20° to +45°C

Ambient Temperature Interval (Low

Temperature Turbine)

-30° to +45°C

Table 10-2: Operational envelope – temperature

The wind turbine will stop producing power at ambient temperatures above 45°C.

For the low temperature options of the wind turbine, consult Vestas.

The turbine is designed for use at altitudes up to 1000 m above sea level as

standard and optional up to 2000 m above sea level.

NOTE




Date: 2016-05-06




10.3 Operational Envelope – Temperature and Altitude Derating in 3.45 MW Mode 0

Values below refer to hub height and are determined by the sensors and control

system of the turbine. At ambient temperatures above an altitude-specific

threshold (+30°C for ≤1250 m.a.s.l.), the turbine will maintain derated production

in 3.45 MW Mode 0, within the component capacity as seen in Figure 10-1.

Figure 10-1: Temperature and altitude derated operation for 3.45 MW Mode 0.

10.4 Operational Envelope – Temperature and Altitude Derating in 3.6 MW Power Optimized Mode (PO1)

Derating chart for 3.6 MW Power Optimized Mode (PO1) is shown in Figure 10-2.

Figure 10-2: Temperature and altitude derated operation for 3.6 MW Power

Optimized Mode (PO1).




Date: 2016-05-06




10.5 Operational Envelope – Temperature and Altitude Derating in 3.3 MW Load Optimized Mode (LO1)

Derating chart for 3.3 MW Load Optimized Mode (LO1) is shown in Figure 10-3.

Figure 10-3: Temperature and altitude derated operation for 3.3 MW Load

Optimized Mode (LO1).

10.6 Operational Envelope – Temperature and Altitude Derating in 3.0 MW Load Optimized Mode (LO2)

Derating chart for 3.0 MW Load Optimized Mode (LO2) is shown in Figure 10-4.

Figure 10-4: Temperature and altitude derated operation for 3.0 MW Load

Optimized Mode (LO2).




Date: 2016-05-06




10.7 Operational Envelope – Grid Connection

Operational Envelope – Grid Connection

Nominal Phase Voltage [UNP] 650 V

Nominal Frequency [fN] 50/60 Hz

Maximum Frequency Gradient ±4 Hz/sec.

Maximum Negative Sequence Voltage 3% (connection) 2% (operation)

Minimum Required Short Circuit Ratio

at Turbine HV Connection 5.0

Maximum Short Circuit Current

Contribution

1.05 p.u. (continuous)

1.45 p.u. (peak)

Table 10-3: Operational envelope – grid connection

The generator and the converter will be disconnected if*:

Protection Settings

Voltage Above 110%** of Nominal for 3600 Seconds 715 V

Voltage Above 121% of Nominal for 2 Seconds 787 V

Voltage Above 136% of Nominal for 0.150 Seconds 884 V

Voltage Below 90%** of Nominal for 60 Seconds 585 V

Voltage Below 80% of Nominal for 10 Seconds 520 V

Frequency is Above 106% of Nominal for 0.2 Seconds 53/63.6 Hz

Frequency is Below 94% of Nominal for 0.2 Seconds 47/56.4 Hz

Table 10-4: Generator and converter disconnecting values

* Over the turbine lifetime, grid drop-outs are to occur at an average of no more

than 50 times a year.

** The turbine may be configured for continuous operation @ +/- 13 % voltage.

Reactive power capability is limited for these widened settings (See section 10.8).

All protection settings are preliminary and subject to change.

NOTE




Date: 2016-05-06




10.8 Operational Envelope – Reactive Power Capability in 3.45 MW Mode 0

The 3.45 MW turbine has a reactive power capability in Mode 0 on the low

voltage side of the HV transformer as illustrated in Figure 10-5:

Figure 10-5: Reactive power capability for 3.45 MW Mode 0.

When operating at 3.45 MW nominal power at LV side of the HV transformer, the

reactive power capability on the high voltage side of the HV transformer is

approximately:

cosφ(HV) = 0.95 capacitive @ U(HV) = 0.87 p.u. voltage

cosφ(HV) = 0.94/0.94 capacitive/inductive @ U(HV) = 0.88 p.u. voltage





Reactive power is produced by the full-scale converter. Traditional capacitors are,

therefore, not used in the turbine.

The turbine is able to maintain the reactive power capability at low wind with no

active power production.

All reactive power capability values are preliminary and subject to change.

3.45 MW Mode 0 derates above +30°C ambient temperature for ≤1250 m.a.s.l.

according to Figure 10-1.

NOTE




Date: 2016-05-06




10.9 Operational Envelope – Reactive Power Capability in 3.45 MW Reactive Power Optimized Mode (QO1)

An optional, extended reactive power capability is available with 3.45 MW

Reactive Power Optimized Mode (QO1) when ambient temperature is below

+20°C for ≤1250 m.a.s.l. The reactive power capability is as seen in Figure 10-6:

Figure 10-6: Reactive power capability for 3.45 MW Reactive Power Optimized

Mode (QO1).

When operating at 3.45 MW in Reactive Power Optimized Mode (QO1) at LV

side of the HV transformer, the reactive power capability on the high voltage side

of the HV transformer is approximately:








3.45 MW Reactive Power Optimized Mode (PO1) derates reactive power linearly

above +20°C ambient temperature for ≤1250 m.a.s.l. to converge with the

reactive power capability of 3.45 MW Mode 0 in Figure 10-5 at +30°C.

NOTE




Date: 2016-05-06




10.10 Operational Envelope – Reactive Power Capability in 3.6 MW Power Optimized Mode (PO1)

The reactive power capability for the 3.6 MW Power Optimized Mode (PO1) is as

illustrated in Figure 10-7:

Figure 10-7: Reactive power capability for 3.6 MW Power Optimized Mode (PO1).

When operating at 3.6 MW in Power Optimized Mode (PO1) at LV side of the HV

transformer, the reactive power capability on the high voltage side of the HV

transformer is approximately:








3.6 MW Power Optimized Mode (PO1) derates above +20°C ambient

temperature for ≤1250 m.a.s.l. according to Figure 10-2.

3.6 MW Power Optimized Mode (PO1) is mutually exclusive with 3.45 MW

Reactive Power Optimized Mode (QO1) (since Q is traded for P).

NOTE




Date: 2016-05-06




10.11 Operational Envelope – Reactive Power Capability in 3.3 MW Load Optimized Mode (LO1)

The reactive power capability for the 3.3 MW Load Optimized Mode (LO1) is as


Figure 10-8: Reactive power capability for 3.3 MW Load Optimized Mode (LO1).

When operating at 3.3 MW in Load Optimized Mode (LO1) at LV side of the HV










3.3 MW Load Optimized Mode (LO1) derates above +30°C ambient temperature

for ≤1250 m.a.s.l. according to Figure 10-3.

NOTE




Date: 2016-05-06




10.12 Operational Envelope – Reactive Power Capability in 3.0 MW Load Optimized Mode (LO2)

The reactive power capability for the 3.0 MW Load Optimized Mode (LO2) is as


Figure 10-9: Reactive power capability for 3.0 MW Load Optimized Mode (LO2).

When operating at 3.0 MW in Load Optimized Mode (LO2) at LV side of the HV










3.0 MW Load Optimized Mode (LO2) derates above +30°C ambient temperature

for ≤1250 m.a.s.l. according to Figure 10-4.

NOTE




Date: 2016-05-06




10.13 Performance – Fault Ride Through

The turbine is equipped with a full-scale converter to gain better control of the

wind turbine during grid faults. The turbine control system continues to run during

grid faults.

The turbine is designed to stay connected during grid disturbances within the

voltage tolerance curve as illustrated:

Voltage FRT-profile (WTG)

0,00; 1,10

0,00; 0,90

10,00; 0,80

10,00; 0,90

2,60; 0,80

0,45; 0,00

0,00; 0,00

0,0

0,1

0,2

0,3

0,4

0,5

0,6

0,7

0,8

0,9

1,0

1,1

1,2

-0,5 0,0 0,5 1,0 1,5 2,0 2,5 3,0 3,5 4,0 4,5 5,0 5,5 6,0 6,5 7,0 7,5 8,0 8,5 9,0 9,5 10,0 10,5 11,0

Time (s)

U (

pu

)

Figure 10-10: Low voltage tolerance curve for symmetrical and asymmetrical

faults, where U represents voltage as measured on the grid.

For grid disturbances outside the tolerance curve in Figure 10-10, the turbine will

be disconnected from the grid.

All fault ride through capability values are preliminary and subject to change.

Power Recovery Time

Power Recovery to 90% of Pre-Fault Level Maximum 0.1 seconds

Table 10-5: Power recovery time

10.14 Performance – Reactive Current Contribution

The reactive current contribution depends on whether the fault applied to the

turbine is symmetrical or asymmetrical.

All reactive current contribution values are preliminary and subject to change.

10.14.1 Symmetrical Reactive Current Contribution

During symmetrical voltage dips, the wind farm will inject reactive current to

support the grid voltage. The reactive current injected is a function of the

measured grid voltage.

NOTE

NOTE




Date: 2016-05-06




The default value gives a reactive current part of 1 p.u. of the rated active current

at the high voltage side of the HV transformer. Figure 10-11, indicates the

reactive current contribution as a function of the voltage. The reactive current

contribution is independent from the actual wind conditions and pre-fault power

level. As seen in Figure 10-11, the default current injection slope is 2% reactive

current increase per 1% voltage decrease. The slope can be parameterized

between 0 and 10 to adapt to site specific requirements.

Figure 10-11: Reactive current injection

10.14.2 Asymmetrical Reactive Current Contribution

The injected current is based on the measured positive sequence voltage and the

used K-factor. During asymmetrical voltage dips, the reactive current injection is

limited to approximate 0.4 p.u. to limit the potential voltage increase on the

healthy phases.

10.15 Performance – Multiple Voltage Dips

The turbine is designed to handle re-closure events and multiple voltage dips

within a short period of time due to the fact that voltage dips are not evenly

distributed during the year. For example, the turbine is designed to handle 10

voltage dips of duration of 200 ms, down to 20% voltage, within 30 minutes.

10.16 Performance – Active and Reactive Power Control

The turbine is designed for control of active and reactive power via the

VestasOnline® SCADA system.

Maximum Ramp Rates for External Control

Active Power 0.1 p.u./sec for max. power level change of 0.3 p.u.

0.3 p.u./sec for max. power level change of 0.1 p.u.

Reactive Power 20 p.u./sec

Table 10-6: Active/reactive power ramp rates (values are preliminary)




Date: 2016-05-06




To support grid stability the turbine is capable to stay connected to the grid at

active power references down to 10 % of nominal power for the turbine. For

active power references below 10 % the turbine may disconnect from the grid.

10.17 Performance – Voltage Control

The turbine is designed for integration with VestasOnline® voltage control by

utilising the turbine reactive power capability.

10.18 Performance – Frequency Control

The turbine can be configured to perform frequency control by decreasing the output power as a linear function of the grid frequency (over frequency). Dead band and slope for the frequency control function are configurable.

10.19 Distortion – Immunity

The turbine is able to connect with a pre-connection (background) voltage distortion level at the grid interface of 8% and operate with a post-connection voltage distortion level of 8%.

10.20 Main Contributors to Own Consumption

The consumption of electrical power by the wind turbine is defined as the power

used by the wind turbine when it is not providing energy to the grid. This is

defined in the control system as Production Generator 0 (zero).

The components in Table 10-7 have the largest influence on the own

consumption of the wind turbine (the average own consumption depends on the

actual conditions, the climate, the wind turbine output, the cut-off hours, etc.).

The VMP8000 control system has a hibernate mode that reduces own

consumption when possible. Similarly, cooling pumps may be turned off when the

turbine idles.

Main contributors to Own Consumption

Hydraulic Motor 2 x 15 kW (master/slave)

Yaw Motors Maximum 18 kW in total

Water Heating 10 kW

Water Pumps 2.2 + 4.0 kW

Oil Heating 7.9 kW

Oil Pump for Gearbox Lubrication 10 kW

Controller Including Heating

Elements for the Hydraulics and all

Controllers

Approximately 3 kW

HV Transformer No-load Loss See section 4.3 HV Transformer, p. 13

Table 10-7: Main contributors to own consumption data (values are preliminary).



Drawings

Date: 2016-05-06




11 Drawings

11.1 Structural Design – Illustration of Outer Dimensions

Figure 11-1: Illustration of outer dimensions – structure

1 Hub heights: See Performance

Specification

2 Rotor diameter: 105-136 m

11.2 Structural Design – Side View Drawing

Figure 11-2: Side-view drawing



General Reservations, Notes and Disclaimers

Date: 2016-05-06




12 General Reservations, Notes and Disclaimers

© 2016 Vestas Wind Systems A/S. This document is created by Vestas Wind

Systems A/S and/or its affiliates and contains copyrighted material,

trademarks, and other proprietary information. All rights reserved. No part of

the document may be reproduced or copied in any form or by any means –

such as graphic, electronic, or mechanical, including photocopying, taping, or

information storage and retrieval systems – without the prior written

permission of Vestas Wind Systems A/S. The use of this document is

prohibited unless specifically permitted by Vestas Wind Systems A/S.

Trademarks, copyright or other notices may not be altered or removed from

the document.

The general descriptions in this document apply to the current version of the

3MW Platform wind turbines. Updated versions of the 3MW Platform wind

turbines, which may be manufactured in the future, may differ from this

general description. In the event that Vestas supplies an updated version of a

specific 3MW Platform wind turbine, Vestas will provide an updated general

description applicable to the updated version.

Vestas recommends that the grid be as close to nominal as possible with

limited variation in frequency and voltage.

A certain time allowance for turbine warm-up must be expected following grid

dropout and/or periods of very low ambient temperature.

All listed start/stop parameters (e. g. wind speeds and temperatures) are

equipped with hysteresis control. This can, in certain borderline situations,

result in turbine stops even though the ambient conditions are within the listed

operation parameters.

The earthing system must comply with the minimum requirements from

Vestas, and be in accordance with local and national requirements and codes

of standards.

This document, General Description, is not an offer for sale, and does not

contain any guarantee, warranty and/or verification of the power curve and

noise (including, without limitation, the power curve and noise verification

method). Any guarantee, warranty and/or verification of the power curve and

noise (including, without limitation, the power curve and noise verification

method) must be agreed to separately in writing.


Weight, Dimensions and Centre of Gravity of Nacelle

Date: 2010-11-23




QM

S 0

00

85

V0

0

Weight, Dimensions and Centre of Gravity of Nacelle This document applies to the turbine types mentioned in section 1 Purpose, p. 2.

Table of Contents

1 Purpose...................................................................................................................................... 2 2 Reference Documents.............................................................................................................. 2 3 Abbreviations and Technical Terms ...................................................................................... 2 4 Technical Data .......................................................................................................................... 3 4.1 Nacelle with Bottom Plate and Rear Legs ................................................................................. 3 4.2 Nacelle with Bottom Plate and Front Adapter ............................................................................ 5 4.3 Nacelle with Bottom Plate and Top Adapters ............................................................................ 7




Purpose

Date: 2010-11-23



Vestas Wind Systems A/S · Alsvej 21 · 8940 Randers SV · Denmark · w w w .vestas.com

1 Purpose

The purpose of this document is to describe the weight, dimensions and centre of

gravity of the nacelle in all configurations.

60 Hz turbines for the North American market will be transported without the door because of the width. See tables below according to configuration.

The nacelles described in this document are used for the turbines stated in Table 1-1, p. 2.

Turbine type

V90-3.0 MW

V100-2.6 MW

Table 1-1: Turbine types.

During transportation, this document must be used together with the transport

manual for the specific turbine type and Mk version.

During installation, this document must be used together with the installation manual for the specific turbine type and Mk version.

2 Reference Documents

Document no. Title

Transport manual for the specific turbine type and Mk version.

Installation manual for the specific turbine type and Mk version.

Table 2-1: Reference documents.

3 Abbreviations and Technical Terms

Abbreviation Spelled-out form / explanation

CoG Centre of Gravity

H Height

L Length

Lw Width

Lcg Distance to the centre of gravity

W Weight

Table 3-1: Abbreviations.

NOTE



Technical Data

Date: 2010-11-23




4 Technical Data

4.1 Nacelle with Bottom Plate and Rear Legs

Nacelle with bottom plate and rear legs

L

[mm]

Lw 50 Hz [mm]

Lw 60 Hz [mm]

CoG

[mm]

Lcg

[mm]

H

[mm]

W

[kg]

9634 3803 3743 1760 3190 4199 73000

Table 4-1: Weight, dimensions and CoG of nacelle.

Figure 4-1: Length of nacelle transport.



Technical Data

Date: 2010-11-23




Figure 4-2: Width of nacelle transport. Figure 4-3: Height and centre of gravity

of nacelle transport.

CoG is measured from the left side when looking at the nacelle from the front.

NOTE



Technical Data

Date: 2010-11-23




4.2 Nacelle with Bottom Plate and Front Adapter

Nacelle with bottom plate and front adapters

L

[mm]

Lw 50 Hz [mm]

Lw 60 Hz [mm]

CoG

[mm]

Lcg

[mm]

H

[mm]

W

[kg]

10074 3803 3743 1760 3190 4199 74500


Figure 4-4: Length of nacelle transport.



Technical Data

Date: 2010-11-23






CoG is measured from the left side when looking at the nacelle from the front.

NOTE



Technical Data

Date: 2010-11-23




4.3 Nacelle with Bottom Plate and Top Adapters

Nacelle with bottom plate and front and rear top adapters

L

[mm]

Lw 50 Hz [mm]

Lw 60 Hz [mm]

CoG

[mm]

Lcg

[mm]

H

[mm]

W

[kg]

10700 3803 3743 1760 3190 4199 77500


Figure 4-7: Nacelle with bottom plate, front and rear top adapters mounted.



Technical Data

Date: 2010-11-23






Copyright © - Vestas Wind Systems A/S, Hedeager 42, DK-8200 Aarhus N, Denmark, www.vestas.com

QM

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T05

DOCUMENT:

0058-2095 VER 00 DESCRIPTION:

3MW full range sound curves RESTRICTED

3MW full range sound curves V105 – 3.45/3.6MW

V112 – 3.45/3.6MW

V117 – 3.45/3.6MW

V126 – 3.45MW Low Torque

V126 – 3.45/3.6MW High Torque

V136 – 3.45MW


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DESCRIPTION:


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Table of Contents

CHAPTER: DESCRIPTION: PAGE:

1. Introduction 3 2. Conditions for sound curves 3 3. Sound power level at hub height (Mode 0) 4 4. Sound power level at hub height (Mode 0-0S) 5 5. Sound power level at hub height (Sound Optimized SO1) 6 6. Sound power level at hub height (Sound Optimized SO2) 7 7. Sound power level at hub height (Sound Optimized SO3) 8 8. Sound power level at hub height (Sound Optimized SO4) 9 9. Sound power level at hub height (Sound Optimized SO5) 10 10. Additional remarks 11

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1. Introduction

This document contains full range sound curves from cut-in to cut-out wind speed, as a function of wind

speed for the following 3MW turbine configurations:

V105 – 3.45/3.6MW

V112 – 3.45/3.6MW

V117 – 3.45/3.6MW

V126 – 3.45MW LTq (Low Torque)

V126 – 3.45/3.6MW HTq (High Torque)

V136 – 3.45MW

The sound power levels are continuously varying as a function of wind speed and are not maintained at

maximum sound power level after this is reached.

2. Conditions for sound curves

The following conditions apply to the sound power level values listed in the tables below:

Measurement standard IEC 61400-11 ed. 3

Maximum turbulence at 10 metre height: 16%

Inflow angle (vertical): 0 ±2°

Air density: 1.225 kg/m3

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3. Sound power level at hub height (Mode 0)

Sound Power Level at Hub Height [dBA] - Mode 0 (Blades with serrated trailing edge)

V105 V105 V112 V112 V117 V117 V126 LTq V126 HTq V126 HTq V136

3.45MW 3.6MW 3.45MW 3.6MW 3.45MW 3.6MW 3.45MW 3.45MW 3.6MW 3.45MW

Available hub heights:

72.5 72.5 69/94 69/94

80/91.5/ (116.5

IEC1B + IEC2A)

80/91.5/ (116.5

IEC S + IEC2A)

87/117/ 137

87/117/ 137/147/

149

87/117/ 137/147/

149

82/112/ 132/142/

149

Wind speed at hub height

[m/s]

SPL [dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

3.0 92.2 92.2 92.9 92.9 91.8 91.8 91.7 91.3 91.3 92.2

3.5 92.8 92.8 93.2 93.2 91.9 91.9 91.8 91.4 91.4 92.3

4.0 93.0 93.0 93.4 93.4 92.1 92.1 91.9 91.5 91.5 92.5

4.5 93.2 93.2 93.6 93.6 92.6 92.6 92.2 91.9 91.9 93.2

5.0 93.5 93.5 94.0 94.0 93.9 93.9 93.2 93.1 93.1 94.5

5.5 94.2 94.2 95.1 95.1 95.4 95.4 94.7 94.4 94.4 95.9

6.0 95.6 95.6 96.7 96.7 97.1 97.1 96.2 96.0 96.0 97.4

6.5 97.1 97.1 98.2 98.2 98.8 98.8 97.8 97.6 97.6 99.0

7.0 98.6 98.6 99.8 99.8 100.4 100.4 99.5 99.2 99.2 100.5

7.5 100.1 100.1 101.2 101.2 101.9 101.9 100.9 100.6 100.6 102.0

8.0 101.5 101.5 102.7 102.7 103.4 103.4 102.5 102.2 102.2 103.4

8.5 102.8 102.9 103.9 104.0 104.9 104.8 103.9 103.5 103.6 104.7

9.0 103.7 103.9 104.8 105.0 106.0 106.1 105.2 104.2 104.6 105.4

9.5 104.2 104.5 105.2 105.5 106.6 106.8 106.4 104.4 104.9 105.5

10.0 104.5 104.7 105.4 105.6 106.8 107.0 107.1 104.4 104.9 105.4

10.5 104.6 104.9 105.4 105.6 106.7 107.0 107.3 104.3 104.9 105.1

11.0 104.7 104.9 105.2 105.5 106.5 106.9 107.2 104.1 104.7 104.9

11.5 104.6 104.9 105.0 105.3 106.3 106.7 107.1 103.9 104.6 104.7

12.0 104.3 104.6 104.7 105.1 106.1 106.5 107.0 103.8 104.5 104.5

12.5 103.9 104.3 104.4 104.8 105.9 106.3 106.9 103.7 104.3 104.4

13.0 103.6 104.0 104.2 104.6 105.8 106.1 106.8 103.5 104.2 104.2

13.5 103.4 103.8 104.0 104.4 105.6 106.0 106.7 103.4 104.1 104.1

14.0 103.1 103.5 103.8 104.2 105.5 105.9 106.6 103.3 104.0 104.0

14.5 102.9 103.3 103.6 104.0 105.4 105.8 106.6 103.3 103.9 103.9

15.0 102.7 103.1 103.4 103.8 105.3 105.6 106.5 103.2 103.9 103.8

15.5 102.6 103.0 103.3 103.7 105.2 105.5 106.4 103.1 103.8 103.7

16.0 102.4 102.8 103.2 103.5 105.1 105.4 106.4 103.0 103.7 103.6

16.5 102.3 102.7 103.0 103.4 105.0 105.4 106.3 103.0 103.7 103.5

17.0 102.2 102.6 102.9 103.3 104.9 105.3 106.2 102.9 103.6 103.4

17.5 102.1 102.4 102.8 103.2 104.8 105.2 106.2 102.9 103.5 103.4

18.0 102.0 102.3 102.7 103.1 104.7 105.1 106.1 102.8 103.5 103.3

18.5 101.8 102.2 102.6 103.0 104.7 105.0 106.1 102.8 103.4 103.2

19.0 101.7 102.1 102.5 102.9 104.6 105.0 106.1 102.7 103.4 103.1

19.5 101.6 102.0 102.4 102.8 104.5 104.9 106.0 102.6 103.3 103.1

20.0 101.6 101.9 102.3 102.7 104.5 104.8 106.0 102.6 103.3 103.0

20.5 101.5 101.8 102.2 102.6 104.4 104.8 105.9 102.6 103.2 102.9

21.0 101.4 101.7 102.2 102.5 104.3 104.7 105.9 102.5 103.2 102.9

21.5 101.3 101.7 102.1 102.4 104.3 104.6 105.8 102.5 103.1 102.8

22.0 101.2 101.6 102.0 102.4 104.2 104.6 105.8 102.4 103.1 102.8

22.5 101.2 101.5 101.9 102.3 104.2 104.5 105.8 102.4 103.1 102.7

23.0 101.1 101.4 101.9 102.2 104.1 104.5 102.4 103.0

23.5 101.0 101.4 101.8 102.1 104.1 104.4 102.3 103.0

24.0 100.9 101.3 101.7 102.1 104.0 104.4 102.3 103.0

24.5 100.9 101.2 101.7 102.0 104.0 104.3 102.3 102.9

25.0 100.8 101.2 101.6 102.0 103.9 104.3 102.2 102.9

The values marked with yellow, are only available for the hub heights also marked with yellow in the respective column.

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4. Sound power level at hub height (Mode 0-0S)

Sound Power Level at Hub Height [dBA] - Mode 0-0S (Blades without serrated trailing edge)




72.5 72.5 69/94 69/94

80/91.5/ (116.5

IEC1B + IEC2A)

80/91.5/ (116.5

IEC S + IEC2A)

87/117/ 137

87/117/ 137/147/

149

87/117/ 137/147/

149

82/112/ 132/142/

149


[m/s]

SPL [dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

3.0 92.4 92.4 93.3 93.3 93.3 93.3 92.5 92.1 92.1 93.0

3.5 93.1 93.1 93.6 93.6 93.5 93.5 92.5 92.2 92.2 93.2

4.0 93.3 93.3 93.9 93.9 93.7 93.7 92.6 92.3 92.3 93.6

4.5 93.6 93.6 94.2 94.2 94.4 94.4 92.9 92.9 92.9 94.7

5.0 93.9 93.9 94.7 94.7 96.0 96.0 94.3 94.4 94.4 96.3

5.5 94.8 94.8 96.0 96.0 97.8 97.8 96.0 96.2 96.2 98.0

6.0 96.2 96.2 97.6 97.6 99.6 99.6 97.8 98.0 98.0 99.8

6.5 97.8 97.8 99.3 99.3 101.3 101.3 99.6 99.9 99.9 101.5

7.0 99.4 99.4 100.9 100.9 103.0 103.1 101.4 101.6 101.6 103.1

7.5 100.9 100.9 102.4 102.4 104.6 104.6 103.0 103.3 103.3 104.6

8.0 102.4 102.4 103.8 103.8 106.1 106.1 104.7 105.0 105.0 106.1

8.5 103.7 103.7 105.1 105.1 107.5 107.5 106.3 106.4 106.5 107.4

9.0 104.6 104.8 106.0 106.1 108.6 108.6 107.7 107.1 107.6 108.1

9.5 105.2 105.4 106.5 106.7 109.2 109.4 108.9 107.4 108.0 108.2

10.0 105.5 105.8 106.7 106.9 109.3 109.6 109.8 107.3 108.0 107.9

10.5 105.8 106.0 106.7 106.9 109.3 109.5 110.1 107.3 107.9 107.6

11.0 105.8 106.0 106.5 106.7 109.1 109.4 110.0 107.2 107.9 107.3

11.5 105.7 105.9 106.2 106.5 108.9 109.3 109.9 107.1 107.8 107.1

12.0 105.3 105.6 105.8 106.2 108.7 109.1 109.9 107.0 107.7 106.8

12.5 104.8 105.3 105.4 105.8 108.6 108.9 109.8 106.9 107.6 106.6

13.0 104.4 104.8 105.1 105.5 108.4 108.8 109.7 106.8 107.5 106.4

13.5 104.0 104.5 104.8 105.2 108.3 108.7 109.7 106.8 107.5 106.3

14.0 103.7 104.2 104.5 105.0 108.2 108.6 109.6 106.7 107.4 106.1

14.5 103.5 103.9 104.3 104.7 108.1 108.4 109.6 106.6 107.4 106.0

15.0 103.2 103.6 104.1 104.5 108.0 108.3 109.6 106.6 107.3 105.8

15.5 103.0 103.4 103.9 104.3 107.9 108.3 109.5 106.5 107.3 105.7

16.0 102.8 103.2 103.7 104.1 107.8 108.2 109.5 106.5 107.2 105.6

16.5 102.6 103.1 103.6 104.0 107.7 108.1 109.4 106.5 107.2 105.5

17.0 102.5 102.9 103.4 103.8 107.6 108.0 109.4 106.4 107.1 105.4

17.5 102.3 102.7 103.3 103.7 107.6 107.9 109.4 106.4 107.1 105.3

18.0 102.2 102.6 103.1 103.5 107.5 107.9 109.3 106.3 107.1 105.2

18.5 102.0 102.4 103.0 103.4 107.4 107.8 109.3 106.3 107.0 105.1

19.0 101.9 102.3 102.9 103.3 107.4 107.7 109.3 106.3 107.0 105.0

19.5 101.8 102.2 102.8 103.1 107.3 107.7 109.2 106.2 106.9 104.9

20.0 101.7 102.0 102.6 103.0 107.3 107.6 109.2 106.2 106.9 104.8

20.5 101.5 101.9 102.5 102.9 107.2 107.6 109.2 106.2 106.9 104.7

21.0 101.4 101.8 102.4 102.8 107.1 107.5 109.2 106.1 106.9 104.6

21.5 101.3 101.7 102.3 102.7 107.1 107.4 109.1 106.1 106.8 104.6

22.0 101.2 101.6 102.2 102.6 107.1 107.4 109.1 106.1 106.8 104.5

22.5 101.1 101.5 102.1 102.5 107.0 107.3 109.1 106.1 106.8 104.4

23.0 101.0 101.4 102.0 102.4 106.9 107.3 106.0 106.8

23.5 100.9 101.3 101.9 102.3 106.9 107.3 106.0 106.8

24.0 100.9 101.2 101.9 102.2 106.9 107.2 106.0 106.7

24.5 100.8 101.1 101.8 102.1 106.8 107.2 106.0 106.7

25.0 100.7 101.1 101.7 102.0 106.8 107.1 106.0 106.7


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5. Sound power level at hub height (Sound Optimized SO1)

Sound Power Level at Hub Height [dBA] – Sound Optimized Mode SO1 (Blades with serrated trailing edge)




N/A N/A 69/94 N/A

80/91.5/ (116.5

IEC1B + IEC2A)

N/A 87/117/

137 87/137/ 147/149

N/A 82/112/

132/142/ 149


[m/s]

SPL [dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

3.0 92.9 91.8 91.7 91.5 92.2

3.5 93.2 91.9 91.8 91.5 92.3

4.0 93.4 92.1 91.9 91.6 92.5

4.5 93.6 92.6 92.2 92.1 93.2

5.0 94.0 93.9 93.2 93.3 94.5

5.5 95.1 95.4 94.6 94.8 95.9

6.0 96.7 97.1 96.2 96.3 97.4

6.5 98.2 98.7 97.8 98.0 99.0

7.0 99.8 100.4 99.4 99.6 100.5

7.5 101.2 101.9 100.8 101.0 102.0

8.0 102.5 103.2 102.5 102.2 103.3

8.5 103.4 104.2 103.9 102.7 104.3

9.0 103.9 104.8 104.9 102.9 104.4

9.5 104.2 105.1 105.6 102.9 104.3

10.0 104.4 105.2 105.9 102.9 104.2

10.5 104.4 105.2 106.1 103.0 104.1

11.0 104.4 105.2 106.2 103.0 104.0

11.5 104.4 105.2 106.3 102.9 104.0

12.0 104.3 105.2 106.3 102.9 104.0

12.5 104.2 105.2 106.3 102.9 103.9

13.0 104.1 105.2 106.3 102.9 103.9

13.5 103.9 105.2 106.3 102.9 104.0

14.0 103.8 105.2 106.4 102.8 103.9

14.5 103.6 105.2 106.4 102.8 103.9

15.0 103.4 105.1 106.4 102.8 103.8

15.5 103.3 105.1 106.3 102.8 103.7

16.0 103.2 105.1 106.3 102.8 103.6

16.5 103.0 105.0 106.3 102.9 103.5

17.0 102.9 104.9 106.2 102.9 103.4

17.5 102.8 104.8 106.2 102.8 103.4

18.0 102.7 104.7 106.1 102.8 103.3

18.5 102.6 104.7 106.1 102.8 103.2

19.0 102.5 104.6 106.1 102.7 103.1

19.5 102.4 104.5 106.0 102.7 103.1

20.0 102.3 104.5 106.0 102.7 103.0

20.5 102.2 104.4 105.9 102.8 102.9

21.0 102.2 104.3 105.9 102.8 102.9

21.5 102.1 104.3 105.8 102.8 102.8

22.0 102.0 104.2 105.8 102.8 102.8

22.5 101.9 104.2 105.8 102.8 102.7

23.0 101.9 104.1 102.8

23.5 101.8 104.1 102.8

24.0 101.7 104.0 102.8

24.5 101.7 104.0 102.7

25.0 101.6 103.9 102.7


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N/A N/A 69/94 N/A 80/91.5/ (116.5 IEC2A)

N/A 87/117/

137 87/117/ 147/149

N/A 82/112/

132/142/ 149


[m/s]

SPL [dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

3.0 92.9 91.8 91.7 91.5 92.2

3.5 93.2 91.9 91.8 91.5 92.3

4.0 93.4 92.1 91.9 91.6 92.5

4.5 93.6 92.6 92.2 92.1 93.2

5.0 94.0 93.9 93.2 93.3 94.5

5.5 95.1 95.4 94.6 94.8 95.9

6.0 96.7 97.1 96.2 96.3 97.4

6.5 98.2 98.7 97.8 98.0 99.0

7.0 99.8 100.4 99.4 99.2 100.5

7.5 101.1 101.9 100.8 99.8 101.9

8.0 102.1 103.0 102.3 100.1 103.0

8.5 102.6 103.5 103.3 100.2 103.5

9.0 102.9 103.7 103.9 100.4 103.5

9.5 103.0 103.7 104.2 100.4 103.4

10.0 103.0 103.6 104.2 100.4 103.3

10.5 102.8 103.6 104.3 100.4 103.3

11.0 102.6 103.6 104.4 100.3 103.4

11.5 102.5 103.6 104.5 100.2 103.4

12.0 102.5 103.7 104.5 100.1 103.5

12.5 102.6 103.7 104.5 100.0 103.5

13.0 102.6 103.6 104.5 99.9 103.5

13.5 102.7 103.6 104.4 99.8 103.5

14.0 102.7 103.7 104.4 99.7 103.5

14.5 102.7 103.7 104.4 99.6 103.5

15.0 102.7 103.7 104.3 99.5 103.5

15.5 102.7 103.7 104.3 99.5 103.5

16.0 102.7 103.6 104.3 99.4 103.4

16.5 102.7 103.6 104.2 99.3 103.4

17.0 102.7 103.6 104.2 99.3 103.4

17.5 102.7 103.6 104.2 99.2 103.3

18.0 102.6 103.6 104.2 99.1 103.3

18.5 102.5 103.6 104.2 99.1 103.2

19.0 102.5 103.5 104.2 99.0 103.1

19.5 102.4 103.5 104.3 99.0 103.1

20.0 102.3 103.4 104.3 99.0 103.0

20.5 102.2 103.4 104.3 98.9 102.9

21.0 102.1 103.4 104.2 98.9 102.9

21.5 102.0 103.4 104.2 98.8 102.8

22.0 102.0 103.4 104.2 98.8 102.8

22.5 101.9 103.4 104.1 98.8 102.7

23.0 101.8 103.4 98.7

23.5 101.8 103.4 98.7

24.0 101.7 103.3 98.7

24.5 101.6 103.3 98.6

25.0 101.6 103.3 98.6


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N/A N/A 69/94 N/A 80/91.5 N/A N/A N/A N/A 82/112/

132/142/ 149


[m/s]

SPL [dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

3.0 92.9 91.8 92.2

3.5 93.2 91.9 92.3

4.0 93.4 92.1 92.5

4.5 93.6 92.6 93.2

5.0 94.0 93.9 94.5

5.5 95.1 95.4 95.9

6.0 96.7 97.1 97.4

6.5 98.2 98.7 99.0

7.0 99.5 100.2 100.5

7.5 100.2 101.3 101.8

8.0 100.7 102.0 102.1

8.5 100.9 102.3 102.0

9.0 101.0 102.4 101.8

9.5 101.0 102.3 101.5

10.0 100.9 102.1 101.2

10.5 100.9 102.0 101.0

11.0 100.8 102.0 100.8

11.5 100.8 102.0 100.6

12.0 100.8 102.1 100.4

12.5 100.8 102.1 100.3

13.0 100.8 102.0 100.2

13.5 100.8 102.0 100.1

14.0 100.8 101.9 100.2

14.5 100.8 101.9 100.7

15.0 100.8 102.0 101.3

15.5 100.7 102.0 101.8

16.0 100.7 102.0 102.1

16.5 100.7 102.0 102.3

17.0 100.7 102.0 102.3

17.5 100.7 102.0 102.3

18.0 100.7 102.0 102.4

18.5 100.7 102.0 102.4

19.0 100.6 102.1 102.4

19.5 100.6 102.1 102.4

20.0 100.6 102.1 102.4

20.5 100.7 102.1 102.4

21.0 100.7 102.0 102.3

21.5 100.7 102.0 102.3

22.0 100.7 102.0 102.3

22.5 100.6 102.0 102.3

23.0 100.6 102.0

23.5 100.5 102.0

24.0 100.5 102.0

24.5 100.4 101.9

25.0 100.4 101.9

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N/A N/A 69/94 N/A 80/91.5/ (116.5 IEC1B)

N/A N/A N/A N/A 82/112/

132/142/ 149


[m/s]

SPL [dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

3.0 92.9 91.8 92.2

3.5 93.2 91.9 92.3

4.0 93.4 92.1 92.5

4.5 93.6 92.6 93.2

5.0 94.0 93.9 94.5

5.5 95.1 95.4 95.9

6.0 96.7 97.0 97.4

6.5 98.2 98.6 98.0

7.0 99.6 99.7 97.7

7.5 100.7 99.8 97.4

8.0 101.4 99.6 97.2

8.5 101.9 99.3 97.0

9.0 102.2 99.0 96.9

9.5 102.6 98.8 96.8

10.0 103.0 98.7 96.7

10.5 103.4 98.5 96.6

11.0 103.6 98.3 96.5

11.5 103.7 98.2 96.4

12.0 103.8 98.1 96.3

12.5 103.9 98.0 96.2

13.0 103.9 97.9 96.2

13.5 103.8 97.8 96.1

14.0 103.7 97.7 96.0

14.5 103.6 97.6 96.0

15.0 103.4 97.5 95.9

15.5 103.3 97.5 95.9

16.0 103.2 97.4 95.8

16.5 103.0 97.3 95.8

17.0 102.9 97.3 95.7

17.5 102.8 97.2 95.7

18.0 102.7 97.2 95.6

18.5 102.6 97.1 95.6

19.0 102.5 97.1 95.6

19.5 102.4 97.0 95.5

20.0 102.3 97.0 95.5

20.5 102.2 97.0 95.5

21.0 102.2 96.9 95.4

21.5 102.1 96.8 95.4

22.0 102.0 96.8 95.4

22.5 101.9 96.8 95.3

23.0 101.9 96.8

23.5 101.8 96.7

24.0 101.7 96.7

24.5 101.7 96.7

25.0 101.6 96.6

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Available hub heights: N/A N/A 69/94 N/A

80/91.5/ (116.5

IEC1B + IEC2A)

N/A N/A N/A N/A N/A


[m/s]

SPL [dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

SPL

[dBA]

3.0 92.9 91.8

3.5 93.2 91.9

4.0 93.4 92.1

4.5 93.6 92.6

5.0 94.0 93.9

5.5 95.1 95.4

6.0 96.6 96.9

6.5 98.1 98.0

7.0 99.3 98.7

7.5 99.8 99.0

8.0 100.0 99.9

8.5 100.0 101.2

9.0 99.7 102.3

9.5 99.3 102.8

10.0 99.0 103.0

10.5 98.7 103.3

11.0 98.6 103.6

11.5 98.6 103.9

12.0 98.6 104.2

12.5 98.6 104.3

13.0 98.6 104.4

13.5 98.7 104.3

14.0 98.7 104.3

14.5 98.8 104.2

15.0 98.9 104.2

15.5 98.9 104.1

16.0 98.9 104.0

16.5 99.0 104.0

17.0 99.0 104.0

17.5 99.1 104.0

18.0 99.1 104.0

18.5 99.1 104.1

19.0 99.1 104.1

19.5 99.1 104.1

20.0 99.2 104.1

20.5 99.2 104.1

21.0 99.2 104.1

21.5 99.2 104.0

22.0 99.2 104.0

22.5 99.1 103.9

23.0 99.1 103.9

23.5 99.1 103.8

24.0 99.0 103.8

24.5 99.0 103.7

25.0 98.9 103.7

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10. Additional remarks

The listed sound power curves are only valid for the designated operating modes and for the

designated hub heights.

Document no.: 961763 V02

Weight, Dimensions and Centre of Gravity of 44 m

Blades

Date: 2010-09-27




QM

S 0

0084 V

00 2

008-0

9-0

1

Weight, Dimensions and Centre of Gravity of 44 m Blades

Table of Contents

1 Purpose ................................................................................................................................ 2 2 Reference Documents ......................................................................................................... 2 3 Abbreviations and Technical Terms ................................................................................... 2 4 Technical Data ..................................................................................................................... 3 4.1 44 m Prepreg Blades ............................................................................................................. 3 4.2 44 m Wood Carbon Blades .................................................................................................... 3



Blades

Purpose

Date: 2010-09-27




1 Purpose

This document describes the weight, dimensions and centre of gravity of 44 m

prepreg and WCT blades with and without HJ frames.

During transportation, this document must be used together with the transport


During installation, this document must be used together with the installation


2 Reference Documents

Transport manual for the specific turbine type and Mk version.

Installation manual for the specific turbine type and Mk version.

All relevant documentation must be read and understood before handling and

transporting/installing blades.

3 Abbreviations and Technical Terms

Abbreviation Spelled-out form / explanation

L Length of the blades.

Whj Width in HJ frames/upright position.

H Maximum height of the blades.

Lc Distance to the maximum chord of the blades.

Lcg Distance to the centre of gravity.

W Weight.

R.1000 Edge of threaded insert in the root end (mm).

This is the starting point for measuring correct lifting point at

tip end.

Table 3-1: Abbreviations.

Term Explanation

WCT Wood Carbon Technology.

Prepreg Pre-impregnated.

Table 3-2: Explanation of terms.

NOTE


Blades

Technical Data

Date: 2010-09-27




4 Technical Data

Figure 4-1: 44 m blade.

4.1 44 m Prepreg Blades

Component L

[mm]

Whj

[mm]

H

[mm]

Lc

[mm]

Lcg

[mm]

W

[kg]

Blades

44000 1800 3512 9000 11200 6700

Blades

including

transport

frames (HJ)

44150 2440 3300 9000 11700 7900

Table 4-1: Technical data 44 m prepreg blade.

4.2 44 m Wood Carbon Blades

Component L

[mm]

Whj

[mm]

H

[mm]

Lc

[mm]

Lcg

[mm]

W

[kg]

Blades

44000 1800 3499 9000 13000 7050

Blades

including

transport

frames (HJ)

44150 2440 3300 9000 13500 8250

Table 4-2: Technical data 44 m wood carbon blade.

R.1000

Bijlage 2-2c –

Specificaties Enercon E92

NL68901

Typewritten Text

Deze bijlage geldt voor alle drie de aangevraagde Enercon E92 windturbines. Deze windturbines zijn nagenoeg identiek, alleen de masthoogte varieert te weten 78, 85 en 85 meter hoog.

Technical DescriptionENERCON Wind Energy ConverterE-92 2000/2350 kW

Legal notice

Publisher ENERCON GmbH ▪ Dreekamp 5 ▪ 26605 Aurich ▪ GermanyPhone: +49 4941 927-0 ▪ Fax: +49 4941 927-109E-mail: [email protected] ▪ Internet: http://www.enercon.deManaging Directors: Hans-Dieter Kettwig, Nicole Fritsch-NehringLocal court: Aurich ▪ Company registration number: HRB 411VAT ID no.: DE 181 977 360

Copyright notice The entire content of this document is protected by the German Copyright Act(UrhG) and international agreements.All copyrights concerning the content of this document are held by ENERCONGmbH, unless another copyright holder is expressly indicated or identified.Any content made available does not grant the user any industrial property rights,rights of use or any other rights. The user is not allowed to register any intellectualproperty rights or rights for parts thereof.Any transmission, surrender and distribution of the contents of this document tothird parties, any reproduction or copying, and any application and use - also in part- require the express and written permission of the copyright holder, unless any ofthe above are permitted by mandatory legal regulations.Any infringement of the copyright is contrary to law, may be prosecuted accordingto §§ 106 et seq. of the German Copyright Act (UrhG), and grants the copyrightholder the right to file for injunctive relief and to claim for punitive damages.

Registered trademarks Any trademarks mentioned in this document are intellectual property of the respec-tive registered trademark holders; the stipulations of the applicable trademark laware valid without restriction.

Reservation of rightof modification

ENERCON GmbH reserves the right to change, improve and expand this documentand the subject matter described herein at any time without prior notice, unless con-tractual agreements or legal requirements provide otherwise.

Document information

Document ID D0374244-3Notation Original document. Source document of this translation: D0279978-3.

Date Language DCC Plant / department2015-02-04 eng DA WRD GmbH / Documentation Department

Legal notice

ii D0374244-3 / DA

Table of contents

1 Overview of ENERCON E-92 2 MW/2.35 MW ...................................................... 1

2 ENERCON wind energy converter concept .......................................................... 2

3 E-92 components .................................................................................................. 3

3.1 Rotor blades .......................................................................................................... 33.2 Nacelle .................................................................................................................. 4

3.2.1 Annular generator ................................................................................. 43.3 Tower .................................................................................................................... 4

4 Grid Management System .................................................................................... 6

5 Safety system ....................................................................................................... 8

5.1 Safety equipment ................................................................................................. 85.2 Sensor system ...................................................................................................... 8

6 Control system ...................................................................................................... 11

6.1 Yaw system ........................................................................................................... 116.2 Pitch control .......................................................................................................... 116.3 WEC start .............................................................................................................. 12

6.3.1 Start lead-up ......................................................................................... 126.3.2 Wind measurement and nacelle alignment .......................................... 126.3.3 Generator excitation .............................................................................. 136.3.4 Power feed ............................................................................................ 13

6.4 Operating modes .................................................................................................. 146.4.1 Full load operation ................................................................................ 146.4.2 Partial load operation ............................................................................ 156.4.3 Idle mode .............................................................................................. 15

6.5 Safe stopping of the wind energy converter .......................................................... 16

7 Remote monitoring ................................................................................................ 17

8 Maintenance ......................................................................................................... 18

9 Technical specifications E-92 2 MW/2.35 MW ...................................................... 19

Table of contents

D0374244-3 / DA iii

Table of contents

iv D0374244-3 / DA

1 Overview of ENERCON E-92 2 MW/2.35 MW

The ENERCON E-92 wind energy converter is a direct-drive wind energy converter with athree-bladed rotor, active pitch control, variable speed operation, and a nominal poweroutput of 2000/2350 kW. It has a rotor diameter of 92 m and can be supplied with hubheights of 78 m to 138 m.

Fig. 1: Complete view of ENERCON E-92

Overview of ENERCON E-92 2 MW/2.35 MW

D0374244-3 / DA 1 of 21

2 ENERCON wind energy converter concept

ENERCON wind energy converters are characterised by the following features:

GearlessThe E-92 drive system comprises very few rotating components. The rotor hub and therotor of the annular generator are directly interconnected to form one solid unit. This re‐duces the mechanical strain and increases technical service life. Maintenance and servicecosts are reduced (fewer wearing parts, no gear oil change, etc.) and operating expensesalso decrease. Since there are no gears or other fast rotating parts, the energy loss be‐tween generator and rotor as well as noise emissions are considerably reduced.

Active pitch controlEach of the three rotor blades is equipped with a pitch unit. Each pitch unit consists of anelectrical drive, a control system, and a dedicated emergency power supply. The pitchunits limit the rotor speed and the amount of power extracted from the wind. In this way,the maximum output of the E-92 can be accurately limited to nominal power, even at shortnotice. By pitching the rotor blades into the feathered position, the rotor is stopped withoutany strain on the drive train caused by the application of a mechanical brake.

Indirect grid connectionThe power produced by the annular generator is fed into the distribution or transport gridvia the ENERCON Grid Management System. The ENERCON Grid Management System,which consists of a rectifier, a DC link and a modular inverter system, ensures maximumenergy yield with excellent power quality. The electrical properties of the annular genera‐tor are therefore irrelevant to the behaviour of the wind energy converter in the distributionor transport grid. Rotational speed, excitation, output voltage and output frequency of theannular generator may vary depending on the wind speed. In this way, the energy con‐tained in the wind can be optimally exploited even in the partial load range.

ENERCON wind energy converter concept

2 of 21 D0374244-3 / DA

3 E-92 components

Fig. 2: View of ENERCON E-92 nacelle

1 Slip ring unit 8 Generator filter cabinet

2 Rotor hub 9 Excitation controller box

3 Blade adapter 10 Nacelle converter cabinet

4 Generator stator 11 Yaw drives

5 Generator rotor 12 Main carrier

6 Stator shield 13 Blade extension

7 Rectifier cabinet 14 Rotor blade

3.1 Rotor blades

The rotor blades made of glass-fibre reinforced plastic (glass fibre + epoxy resin) have amajor influence on the wind energy converter’s yield and its noise emission. The shapeand profile of the E-92 rotor blades were designed with the following criteria in mind:■ High power coefficient■ Long service life■ Low noise emissions■ Low mechanical strain■ Efficient use of material

E-92 components

D0374244-3 / DA 3 of 21

One special feature to be pointed out is the new rotor blade profile, which extends down tothe nacelle. This design eliminates the loss of the inner air flow experienced with conven‐tional rotor blades. In combination with the streamlined nacelle, utilisation of the wind sup‐ply is considerably optimised.The rotor blades of the E-92 were specially designed to operate with variable pitch controland at variable speeds. The PU-based surface coating protects the rotor blades from envi‐ronmental impacts such as UV radiation and erosion. This coating is highly resistant toabrasion and visco-hard.Microprocessor-controlled pitch units that are independent of one another adjust each ofthe three rotor blades. An angle encoder in each rotor blade constantly monitors the setblade angle and ensures blade angle synchronisation across all three blades. This pro‐vides for quick, accurate adjustment of blade angles according to the prevailing wind con‐ditions.

3.2 Nacelle

3.2.1 Annular generator

ENERCON wind energy converters (WECs) are equipped with a multi-polar, separatelyexcited synchronous generator (annular generator). The WEC operates at variablespeeds so as to optimally utilise the wind energy potential. The annular generator there‐fore produces alternating current with varying voltage, frequency and amplitude.The windings in the stator of the annular generator form two three-phase alternating cur‐rent systems that are independent of each other. Both systems are rectified independentlyof each other in the nacelle and combined by the direct-current distribution system. In thetower base the inverters reconvert the current into three-phase current whose voltage, fre‐quency, and phase position conform to the grid.Consequently, the annular generator is not directly connected to the receiving power gridof the utility/power supply company; instead, it is completely decoupled from the grid bythe full-scale converter.

3.3 Tower

The tower of the E-92 wind energy converter is either a steel tower or a concrete towermade of precast segments. Towers with different heights are available.All towers are painted and equipped with weather and corrosion protection at the factory.This means that no work is required in this regard after assembly except for repairing anydefects or transport damage. By default, the bottom of the tower comes with graduatedpaintwork (can be dispensed with if desired).Steel towers are steel tubes that taper linearly towards the top. They are prefabricatedand consist of a small number of large sections. Flanges with drill holes for bolting arewelded to the ends of the sections.The tower sections are simply stacked on top of each other and bolted together at the in‐stallation site. They are linked to the foundation by means of a bolt cage.The concrete tower is assembled from the precast concrete elements at the installationsite. As a rule, segments are dry-stacked; however, a compensatory grout layer can beapplied. Vertical joints are closed by means of bolt connections.Towers are pre-tensioned vertically by means of prestressing steel tendons. The pre‐stressing tendons run vertically either through ducts in the concrete elements or externallyalong the interior tower wall. They are anchored to the foundation.

E-92 components

4 of 21 D0374244-3 / DA

For technical and financial reasons, the top slender part of the E-92 concrete tower ismade of steel. For instance, installing the yaw bearing directly on the concrete elements isunfeasible, and the considerably thinner wall of the steel section provides for more spacein the tower interior.

E-92 components

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4 Grid Management System

The annular generator is coupled to the grid through the ENERCON Grid ManagementSystem. The main components of this system are a rectifier, a DC link, and several modu‐lar inverters.

Annular

generatorRectifier DC link Inverter Filters Transformer

Power circuit

breakerGrid

ENERCON control system

Excitation controller

Fig. 3: Simplified electric diagram of an ENERCON WEC

The Grid Management System, generator excitation and pitch control are all managed bythe control system to achieve maximum energy yield and excellent power quality.Decoupling the annular generator from the grid guarantees ideal power transmission con‐ditions. Sudden changes in wind speed are translated into controlled change in order tomaintain stable grid feed. Conversely, possible grid faults have virtually no effect on WECmechanics. The power injected by the E-92 can be precisely regulated from 0 kW to2000/2350 kW.In general, the features required for a certain wind energy converter or wind farm to beconnected to the receiving power grid are predefined by the operator of that grid. To meetdifferent requirements, ENERCON wind energy converters are available with differentconfigurations.The inverter system in the tower base is dimensioned according to the particular WECconfiguration. As a rule, a transformer inside or near the wind energy converter converts400 V low voltage to the desired medium voltage.

Reactive powerIf necessary, an E-92 equipped with standard FACTS (Flexible AC Transmission System)control can supply reactive power in order to contribute to reactive power balance and tomaintaining voltage levels in the grid. The maximum reactive power range is available atan output as low as 10 % of the nominal active power. The maximum reactive powerrange varies, depending on the WEC configuration.

Grid Management System

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FT configurationBy default, the E-92 comes equipped with FACTS technology that meets the stringent re‐quirements of specific grid codes. It is able to ride through grid faults (undervoltage, over‐voltage, automatic reclosing, etc.) of up to 5 seconds (FT = FACTS + FRT [Fault RideThrough]) and to remain connected to the grid during these faults.If the voltage measured at the reference point exceeds a defined limit value, theENERCON wind energy converter changes from normal operation to a specific fault oper‐ating mode.Once the fault has been cleared, the wind energy converter returns to normal operationand feeds the available power into the grid. If the voltage does not return to the operatingrange admissible for normal operation within an adjustable time frame (5 seconds max.),the wind energy converter is disconnected from the grid.While the system is riding through a grid fault, various fault modes using different grid feedstrategies are available, including feeding in additional reactive current in the event of afault. The control strategies include different options for setting fault types.Selection of a suitable control strategy depends on specific grid code and project require‐ments that must be confirmed by the particular grid operator.

FTQ configurationThe FTQ configuration (FT plus Q+ option) comprises all features of the FT configuration.In addition, it has an extended reactive power range.

FTQS configurationThe FTQS configuration comprises all features of the FTQ configuration and has been ex‐panded to include the STATCOM (Static Synchronous Compensator) option. TheSTATCOM option enables the wind energy converter to output and absorb reactive powerregardless of whether it generates and feeds active power into the grid. It is thus able toactively support the power grid at any time, similar to a power plant.

Frequency protectionENERCON wind energy converters can be used in grids with a nominal frequency of50 Hz or 60 Hz.The range of operation of the E-92 is defined by a lower and upper frequency limit value.Overfrequency and underfrequency events at the WEC reference point trigger frequencyprotection and cause the WEC to shut down after the maximum delay time of 60 secondshas elapsed.

Power-frequency controlIf temporary overfrequency occurs as a result of a grid fault, ENERCON wind energy con‐verters can reduce their power feed dynamically to contribute to restoring the balance be‐tween the generating and transmission networks. As a pre-emptive measure, the active power feed of ENERCON wind energy converterscan be limited during normal operation. During an underfrequency event, the power re‐served by this limitation is made available to stabilise the frequency. The characteristics ofthis control system can be easily adapted to different specifications.

Grid Management System

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5 Safety system

The E-92 comes with a large number of safety features whose purpose is to permanentlykeep the WEC inside a safe operating range. In addition to components that ensure safestopping of the wind energy converter, these include a complex sensor system. It continu‐ously captures all relevant operating states of the wind energy converter and makes therelevant information available through the ENERCON SCADA remote monitoring system.If any safety-relevant operating parameters are out of the permitted range, the WEC willcontinue running at limited power or it will stop.

5.1 Safety equipment

Emergency stop buttonIn an ENERCON wind energy converter there are emergency stop buttons next to thetower door, on the control cabinet in the tower base, on the nacelle control cabinet and, ifrequired, on further levels of the E-module. Actuating an emergency stop button activatesthe rotor brake. Emergency pitching of the rotor blades takes place.The following are still supplied with power:■ Rotor brake■ Beacon system components■ Lighting■ Sockets

Main switchIn an ENERCON wind energy converter, main switches are installed on the control cabi‐net and the nacelle control cabinet. When actuated, they de-energise virtually the entirewind energy converter.The following are still supplied with power:■ Beacon system components■ Service hoist■ Sockets■ Lighting■ Medium-voltage area

5.2 Sensor system

There is a large number of sensors that continuously monitor the current status of thewind energy converter and the relevant ambient parameters (e.g. rotor speed, tempera‐ture, blade load, etc.). The control system analyses the signals and regulates the wind en‐ergy converter such that the wind energy available at any given time is always optimallyexploited and operating safety is ensured at the same time.

Redundant sensorsIn order to be able to check plausibility by comparing the reported values, more sensorsthan necessary are installed for some operating states (e.g. for measuring the generatortemperature). Defective sensors are reliably detected and can be replaced by activation ofa spare sensor. In this way, the wind energy converter can safely continue its operationwithout the need for replacement of major components.

Safety system

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