44301399-ABB-UNITROL-1000

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UNITROL® 1000-15UNITROL® 1000-40

Introduction to Automatic Voltage Regulators

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8Content

� Refresher AVR

� Introduction to UNITROL 1000 Family

� Block diagram, technical data

� Supply modes

� Software functions

� Communication, Interface

� AVR System

� E-Support

� UNITROL 1000 sales

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8Content

� Refresher AVR



� Supply modes

� Modes of operation



� AVR System

� E-Support


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8The Duties of an Excitation System

� Provide variable DC current with short time overload capability

� Control terminal voltage with suitable accuracy

� Ensure stable operation with network and / or other machines

� Keep machine within permissible operating range

� Contribute to transient stability subsequent to a fault.

� Communicate with the power plant control system

AVRE

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8Content

� Refresher AVR



� Supply modes



� AVR System

� E-Support


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8Positioning of UNITROL 1000 Family

Com

plex

ity o

f per

form

ance

Generator Power / Excitation current

Indirect excitation withrotating machines

Static Excitation Systems

UNITROL® 5000

UNITROL® F

UNITROL® 1000Family

Ifn [ADC]80040 >10‘000

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8UNITROL 1000 Family

UNITROL 1000-15

UNITROL 1000-7

UNITROL 1000-PM40

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8Application Range

UNITROL 1000 Family is applicable for:

Synchronous Motors andSynchronous Generators up to approx. 50 MVA

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8The UNITROL 1000-15

� The first member of the UNITROL 1000 Family

� Launched in the year 2000

� Field current 15 A

� More than 1000 pieces sold till today

UNITROL 1000-15

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8The UNITROL 1000-40

UNITROL 1000-PM40 Power Module

� Used in conjunction withUNITROL 1000-15 AVR

� Field current up to 40 A

� CAN Bus interface

� Mainly for retrofitmarket

UNITROL 1000-PM40UNITROL 1000-15

CAN Bus .

UNITROL 1000-40

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8The UNITROL 1000-7

� Single print design

� Field current 7 A (70°C ambient)

� Without local display

� Suitable for harsh environmentalconditions

� EN, ANSI norms

� CE, UL, CSA certified

Prototypes 2Q04

UNITROL 1000-7

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8Comparison table

YesYesNoLocal display

CubicleCubicleInside the Machine

Mounting

YesYesNoI/O Extension

4 in, 4 in/out3 in, 2 out



Digital I/O Analogue I/O

40 A cont.80 A ceiling



Excitation current

UNITROL 1000-40

UNITROL 1000-15

UNITROL 1000-7

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8Content

� Refresher AVR



� Supply modes



� AVR System

� E-Support


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8UNITROL 1000-15 Block Diagram

PWM

-

+

Mea

sure

men

tan

d co

ntro

lin

terf

ace

~ / = =

Auxiliary supply UL1 L2 L3 (+) (-)

AVR

Power electronicssupply

(+) L1(-) L2

L3

Digital I/O

Analog I/O

AUX

UNET

U M

I M2

UPWRIe

UN1000

EM E

for control electronics

IGBT

RS-232

RS-485CAN

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8UNITROL 1000-15 Technical Data (1)

� Large supply voltage range for the auxiliary power9...250 V AC 3-phase50...250 V AC 1-phase 18…300 V DC

� Power electronics supply 0…250 V AC/DC

� Excitation output 15 A DC cont. 30 A DC 10 sec

� 3-phase or single phase stator voltage measurement

� Single phase current measurement (1 A)

� Single phase measurement of line voltage for synchronisation

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8UNITROL 1000-15 Technical Data (2)

� 4 digital inputs

� 4 configurable digital inputs/outputs (convertible)

� 3 configurable analog inputs(can also be used as 2, 4 or 6 digital inputs)

� 2 analog outputs

� RS-485 port for reactive load sharing application(future Modbus)

� CAN Bus for controlling local extension modules

� RS-232 port for connecting a PC (CMT 1000)

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8UN1000-15 Mechanical Lay Out

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8UNITROL 1000-15 Terminal block

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8UN1000-PM40 Mechanical Lay Out

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8UNITROL 1000-PM40 Terminal block

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8Content

� Refresher AVR



� Supply modes



� AVR System

� E-Support


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8PMG supplied

PMG SM E

AVR

UN 1000

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8Externally supplied

SM E

External Power Supply

AVR

UN 1000

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8Shunt supplied

SM E

AVR

UN 1000

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8Shunt supplied with AC boost

SM E

AVR

UN 1000

boost

Boost for short circuit support

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8Shunt supplied with DC boost

SM E

Station battery

AVR

UN 1000

boost

Boost for short circuit support

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8DC-Exciter supplied

SM =

AVR

UN 1000

start

+

-

Retrofitting systems with DC Exciter machines

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8Content

� Refresher AVR



� Supply modes



� AVR System

� E-Support


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8Software Functions for Start-up

� Soft start

� Field Flashing Off

� Voltage Relay function

� Automatic Synchronizing (optional) more info

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8Basic operation modes

� Voltage control mode with PID control algorithm

� Power factor controller with PID control algorithm

� Reactive power (Var) controller with PID control algorithm

� Excitation current controller (manual control) with PI control algorithm

Bump-less change over between all operation modes

Illustration: PF/Var

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8Software functions for on-line operation

� Reactive current droop for parallel operation

� Analogue input for superimposed voltage regulation

� Voltage Droop Compensation (VDC) mode in island operation more info

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8Limiters

� V/Hz limiter

� Minimum excitation current limiter

� Underexcited reactive current limiter as a function of active power (P/Q)

� Three step delayed maximum excitation current limiter

� Machine voltage min/max limiters

“Limit Active” indications are provided

Power chart

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8Monitoring and Protective functions

� Software alarm function (Watchdog)

� Under voltage detection to activate external current boost for short circuit support

� Rotating Diode Monitoring (optional)

� Channel monitoring (for redundant systems) more info

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8Software Functions for commissioning

� Open loop control of output voltage for test purposes

� Built-in step test function for regulator tuning, together with CMT 1000 commissioning software

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8Future Software Functions

To be implemented:

� Power System Stabilizer (PSS)

� Dual channel system using CAN Bus

� Data / Event logger

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8Content

� Refresher AVR



� Supply modes



� AVR System

� E-Support


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8Human Machine Interface (HMI) Local Panel

� Actual value indication

� Setting of parameters

� Configuration of digital and analog I/O’s

UNITROL 1000-15

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8CMT 1000 Software ...

... a user friendly tool for commissioning and maintenance of UNITROL 1000 Family

� Actual value measurements

� Parameter settings

� Status indications

� Power chart

� Oscilloscope

� Synchronoscope

� Parameter files

� Windows 98, NT, 2000 and XP compatible

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8CMT 1000 Software – Device Configurator

� I/O Configuration

� System Data

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8CMT 1000 Software - Oscilloscope

� Trending20 channels

� 50 ms resolution

� File save in numerical form

� Cursor measurements

� Bitmap export

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8CMT 1000 Software – Other features

� Synchronoscope

� Power Chart

� Measurements

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8Future Communication Functions

To be implemented:

� Modbus communication

� Digital/Analogue I/O Extension over CAN Bus

� Enhanced CMT 1000

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8AVR System

What components are needed around the AVR for safe and reliable operation?

� Power circuits� Excitation breaker

� Over current protection

� Field flashing / boosting circuit (shunt supply only)

� Interposing supply transformer

� Auxiliary (electronics) supply

� Signals� Galvanic isolation for I/O signals (relays, transducers)

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8Standard Cubicle with UNITROL 1000-15

� Pre-engineered solution for end users

� Configuration by Internet tool

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8OEM Plate with UNITROL 1000-15

AVR system optimized for

� OEM specific solution

� End user specific solution for repeat projects

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8System Configurator in the Internet

� Requirements from the customer

� System engineering made by configurator

� Output:� System description with a single line diagram

� Electrical schematics

� Layout drawing

� Parameter file for UNITROL 1000

� Material list

� Pricing

www.abb.com/unitrolLook for “UNITROL 1000 Configurator”

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8E-Learning

� Interactive training course� Excitation basics

� UNITROL 1000 connections, operation, panel, etc.

� CMT 1000 software

� Commissioning

� Available on a CD-ROM

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8Ordering information

UNITROL 1000-15 (version 4)� Standard unit: 3BHE014557R0003

� With Synchronising: 3BHE014557R0004

� With RDM: 3BHE014557R0005

� With Sync & RDM: 3BHE014557R0006

Scope of delivery:� CD-ROM with CMT 1000 software

� RS-232 cable

� User’s Manual

Power Unit UNITROL 1000-PM40� Standard: 3BHE015411R0001

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8UNITROL 1000-15 Facts and Figures

Delivery times:

Module: 2 weeks

Standard system: 6 weeks

Custom system: 3 months

Sold: 2000 24 Units

2001 215 Units

2002 352 Units

2003 336 Units

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8Conclusion

� Proven technology

� Compact product

� Low engineering cost

� Low commissioning costs

� High availability

� Decades of experience

� Extensive software

� System configurator

� CMT 1000, E-Learning

� World-wide support 24 h/day

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8PF and Var Control Modes

+Q [MVAR]-Q

+P [MW]

Q = 0.2 p.u

+Q [MVAR]-Q

+P [MW]

-P

Cos φ = 0.8

POWER FACTOR Control

REACTIVE POWER Control

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8Power Chart with operational limits

Max. Max. field current limiterfield current limiterMin. Min. field current limiterfield current limiterUnder excitationUnder excitation P,Q P,Q limiterlimiter

P

+Q-Q 1/Xd

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8VDC - Voltage Droop Compensation

� Reactive power is shared equally between parallel generators, without any drop in voltage level

� RS-485 bus communication between AVRs

SM SM SM SM

Load A Load B

AVR 1 AVR 2 AVR 3 AVR 4

RS-485U = 100 %

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8VDC - Voltage Droop Compensation

� Reactive power is shared equally between parallel generators, without any drop in voltage level

� RS-485 bus communication between AVRs

� Possible to divide into separate island networks

SM SM SM SM

Load A Load B

Prim. Net = 1Sec. Net = 2

Prim. Net = 1

AVR 1 AVR 2 AVR 3 AVR 4

RS-485

Din = Secondary Net

U = 100 %

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8Synchronizing

� Voltage matching

� Speed control, analogue bias signal

� Breaker close command

� Synchrocheck

Regulator

ESM

Command

UNET

Fbias

UNITROL 1000

Speed Controller

Setpoint fSP = fNom

UM

Sync

Setpoint

CB

T

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8Redundant AVR system

� Auto follow� redundant (stand by)

following actual values

� Auto change over� SW Alarm

� MCB trip

� External command

Future: CAN Bus

G E

UN 1000

AVR

AVR

UN 1000

44301399-ABB-UNITROL-1000

Documents

Transcript of 44301399-ABB-UNITROL-1000