Dry HiDry72 en External transformator

8/10/2019 Dry HiDry72 en External transformator

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Dry-type transformersHiDry72

PG Dry February 2011

ABB GroupOctober 30, 2014 | Slide 1


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Dry-type transformersClass 72.5 kV

A technical breakthrough

Safe and ecological

Reliable transformer technologyLimited contribution with calorific energy to the source offire

Self-extinguishing
http://stage-www.abb.com/global/gad/gad02008.nsf/vwImages/772DFF05170A2C48C12576020025E9BA/$File/Flower_and_cloud.jpg


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Dry-type transformersThe widest technology available

RESIBLOC Vacuum cast coil Open wound

Unique manufacturer with three coil technologies:Vacuum cast coilRESIBLOC

Open wound Complementing technologies dedicated to specific market

demands.Nearly 40 years of experienceProprietary technology and R&D departments


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ABB22/07/2009 | Slide 5

Dry-type transformersGlobal producer with focus factories I

China

Germany

USA Korea

Spain

Egypt Saudi Arabia

India

Russia

Focus factoriesdedicated toproduce dry-typetransformers


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Dry-type transformersGlobal producer with focus factories II

* Assembly units Vacuum cast coil RESIBLOCOpen WoundCN x x

DE x

KR x

ES x

US x x x

SA* x

EG* x

IN* xRU* x


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Dry-type transformersMain advantages of dry transformers

Safety for people and propertyEnvironmentally friendly

Maintenance and pollution-free solution

No fire hazard

Easy installation

Excellent resistance to short circuitcurrents

Excellent capacity to support overloads

Excellent performance in case of seismicevents

Suited for damp and contaminated areas

Reduced cost on civil installation worksand fire protection systems


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Dry-type transformers Applications

Public worksHospitals

AirportsShopping centersPublic buildingsOffice buildingsStadiumsVariable speed drives

Special industriesUtilitiesShipsOil and gasMetal and mining industryMetro systems/ trainsWind and solar power

Application with rectifiers


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HiDry 72


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HiDry72 The range I

Ratings up to 63 MVA

Primary voltage up to 72,5 kV:

with 325 kV BIL / AC 140 kVaccording to IEC350 kV BIL / AC 140 kV according to

IEEE180 kV BIL / AC 90 kV, according toGOST

Secondary voltage up to 36 kV:

with 170 kV BIL / AC70 kV accordingto IEC

With or without on-load tap changer(OLTC)


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HiDry72 The range II

Classes: E2, C2, F1

Partial discharges:


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HiDry72 The boarder lines

Power

Small dry typeVoltage

High power High voltage

40.5 kV 72.5 kV

60 MVA

3.15 MVA

40 MVA


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HiDry72 Technical advantages

For retrofit or new installations

Similar footprint as existing transformers

For indoor or outdoor installation

Paralleling with existing oil-transformers possible

Safe and environment friendly

No flammable liquids

Self-extinguishing solid insulation

10-20 times smaller combustible mass, minimum smokeNo risk of explosion

Lower insurance liabilities


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HiDry72 Customer benefits

Environmentally-friendly and cost-efficient

Optimized load loss

Lower infrastructural cost

Simple installation, no special civil works

Minimal requirements for safety and protection installationsBushings available upon customer request

Virtually maintenance free

Easier unload and more efficient logistic costs


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HiDry72 Applications areas

Inner-city substations

Indoor and underground substations

Chemical, oil and gas industry

Environmentally sensitive areas (e.g. water protection areas)

Renewable generation (e.g. off-shore wind turbines)Fire-risk areas (e.g. forests)


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HiDry72 Example on utilization

The compact internal substations can be built in urbanareas with limited space.Lower cost, lower environment impact.

Less losses and higher peoples security.

Before Now


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Erection and commissioningEasy and fast installation and commissioning


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HiDry72Energy efficiency

5 km of 24 kVcable can bereplaced by 69 kVone

69 kV cables

24 kV cables

Saving in losses :Dry transformers allow installationclose to/inside buildings.

Quantified over a 30-years period,the total saving is 8.5 GWh or 280MWh per year.

Resulting in reduced emissions (EUpower mix): CO 2: 140tons/yr

SO 2: 375 kg/yrNO x: 175 kg/yr

Additional savings:

Civil works.

Fire protection system.

Commissioning.

Yearly maintenance.


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HiDry 72

Technical achievements


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72.5 kV dry-type transformer A technically demanding design

Development strongly supported by ABB Corporate Research andUniversity collaborations.

Extensive use of computer simulationsallowed fast development and product

optimization.


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HiDry72 Voltage distribution during impulse test

Temporal behavior ofvoltage distributionduring application oflightning impulse

Max. valuesVoltage distributionalong windings for325 kV lightningimpulse test


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Development strongly supported by simulationsDielectric field stress

Simulation ofelectrical fieldstress during BILand AC testing


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Development strongly supported by simulationsMagnetic fields and eddy currents

Eddy currentlosses instructuralcomponents

Magnetic stray field


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and confirmed by extensive experimental testingExceeding the limits of standards

and beingtested beyond thelimits in order toproof theexpected safetymargin


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72.5 kV dry-type transformerOverall sizes

Dry transformer Oil transformer

Dry-typew/o

OLTC

Oil-filled Dry-typew/o

OLTC

Oil-filled

Length (mm) 4370 4500 4970 5000

Width (mm) 2000 2300 2000 2500Heigth (mm) 4120 4100 4120 4100

25 MVA, 66 / 10 kV 40 MVA, 66 / 10 kV


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72.5 kV dry-type transformerOn-load tap changer

Characteristics of OLTC:Dry, oil-free technology

Linear type

For up to 23 taps and 18% regulation range (*)

> 100000 operations

Low maintenance

Transformer with On-load tap changer

(*) presently limitedavailability,please contactus forclarification


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Conclusion and summary


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Conclusion and summary: ABB transformersSafety reliability low losses

Based upon a wide experience, ABB manufactures dry typetransformers with the most technologically advanced design.

Ratings of up to 60 MVA and voltages of up to 72.5 kV.

Your advantages:

Protection of the environment All materials practically halogens freeLimited contribution with calorific energy to the source of fireSelf-extinguishingEnhanced safety

Reliable technologyNearly maintenance freeCost-efficient solutions


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Dry HiDry72 en External transformator

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