Mark Delaney – Business Development , May 2013 ... · PDF fileModular mobile transformer for 345 kV, 400 kV and 525 kV transmission. Normal or hybrid insulation

Multifunctional transformers and innovative solutions for contingency planning

© ABB Group January 2010 | Slide 1

Mark Delaney – Business Development , May 2013

© ABB 2011 | Slide 2

Contingency solutions for power transformers

In case of transformer malfunction or failure, the energy cannot be transmitted to the grid

Utilities need to have contingency solutions to minimize the impact in their operations and business



ABB have developed a variety of contingency solutions for power transformers to allow the utilities:

To have a contingency plan

Minimize impact in the operation and lost of revenues

Optimize the investment

© ABB Group May 20, 2013 | Slide 4

Multifunctional transformers for contingency planning A broad portfolio of solutions

Polytransformer Multifunctional spare for T&D applications Multiple voltage ratios in one transformer. Mechanical and

electrical compatibility Universal generator transformer

Universal spare for different power plants Prepared to connect to different generator and output

voltages, compatible with installation constraints in each power plant

HV mobile transformer Modular mobile transformer for 345 kV, 400 kV and 525 kV

transmission. Normal or hybrid insulation. Contingency planning. Fast deployment, quick and simple

transportation Flexiformer

Modular concept for system transformers and strategic spares Reduction of transportation cost. Full standardization,

installation flexibility (1ph, 3ph)



The solution is taylor-made Evaluating the transformer fleet

Main electrical features and mechanical arrangement Visits to the different substations

Analyzing the alternatives

Selectable voltage levels (as needed)

Different mechanical arrangements and configurations considering the physical constraints of the installation

Transport arrangements and complexity

Time of reaction

Proposing the optimum solution

Customized to match different transformers in a system:

Mechanical and electrical compatibility with other transformers in the network

Multiple voltage ratios in one transformer Spares strategically distributed by regions

Example of application: 500 MVA, 3ph, 400-230 / 230-138-110-107 kV


The Polytransformer Multifunctional spare transformer for T&D

Case example (US) 2012 500MVA 3ph auto Same power at all ratios (500MVA) 230 / 161-138-115kV

400 kV 230 kV 33 kV400 kV 138 kV 33 kV400 kV 110 kV 33 kV400 kV 230 kV 26.4 kV400 kV 138 kV 26.4 kV400 kV 110 kV 26.4 kV400 kV 230 kV 24 kV400 kV 138 kV 24 kV400 kV 110 kV 24 kV230 kV 132 kV 19 kV230 kV 107 kV 19 kV230 kV 132 kV 15 kV230 kV 107 kV 15 kV230 kV 132 kV 13.8 kV230 kV 107 kV 13.8 kV

HIGH LOW TERTIARY

Multi-station, multivoltage universal spare Mechanical compatibility to spare many transformers in different power

plants. Reduced investment, risk limitation and cost reduction:

Minimize diversity and number of spares, less inventory

Case example, CCPP in Spain: 4 Universal transformers, electrical and mechanical compatibility Cover 23 out of 44 Transformers / 16 out of 25 Power Plants

25 combined cycle power plants

44 transformers

Universal Generator Transformer Multi-location spare for generation

Universal GSU 1 Universal GSU 2

Universal GSU 3 Universal GSU 4

230/19-20-21 kV 4 Power Plants 4 Transformers





• One single spare for 15 transformers (7 different designs). • 8 power plants / 4 geographical locations.

CCC Iberdrola Castejón: 1 x 485 MVA 415 / 19 kV

CCC Iberdrola Castellón: 1 x 400 MVA 420 / 16 kV 2 x 320 MVA 420 / 16 kV CCC Iberdrola Castellón IV 3 x 380 MVA 415/17 kV

CCC Iberdrola Arcos I y II: 2 x 480 MVA 415 / 19 kV CCC Iberdrola Arcos III: 3 x 370 MVA 415 / 17

CCC Iberdrola Escombreras: 3 x 380 MVA 415 / 17 kV

Universal GSU A practical case


• Three (3) different low voltages. • No load tap changer regulation. • Different vector groups. • Interchangeability / adaptation for connection to different

bus duct connections.


1 x

2 x

2 x

3 x

1 x

3 x

3 x


Universal GSU Electrical compatibility

15.75kV LV connection


19kV LV Connection



17kV LV Connection



Different vector group



• Change of low voltage:

Three different taps are available in the low voltage: 15.75, 17 and 19 kV.

The selection is made under the cover with bolted connections when moving to other location.



Three different covers to fit mechanically in different locations.

One transport cover is manufactured to allow simple transportation.

Universal GSU Mechanical compatibility





Different bus duct heights


Different bus duct arrangements



Mechanical adaptations: Different locations of

conservator



Multi-station, multi-voltage universal spare Mechanical compatibility to spare many transformers in different power

plants. Reduced investment, risk limitation and cost reduction:

Minimize diversity and number of spares, less inventory

Universal GSU Multi-location spare for generation


Case example (US) 2012

745MVA 3ph

Multi-voltage to match two generators

17.1kV and 19KV

Mechanical compatibility

ABB Polytransformer and mobile transformers Reference list


Auto Polytransformers REE (Spain): 4 x 450 MVA, 400-230/230-138-110-107 kV (2003-2005) REE (Spain): 8 x 500 MVA, 400-230/230-138-110-107 kV (2006-2007) Iberdrola (Spain): 2 x 200 MVA, 220-132/132-66-45 kV (2008-2012) Entergy (US): 1 x 500MVA, 230 / 161-138-115kV (2012)

Mobile HV T&D REE (Spain): 3 x 117 MVA, 400-230/230-132 kV (2008-2009) REE (Spain): 3 x 250 MVA, 400-230/230-132-110 kV (2012-2013). Hybrid insulation

Universal GSU Polytransformers Western Resources (USA): 750 MVA, 345-230/24-26 kV (1999) Western Resources (USA): 300 MVA, 155-138-115-102/16-18-24 kV (1999) Ameren 1 x 670 MVA (USA): 345/17-19-22.8 kV (2000) Reliant Energy, HL&P (USA): 800 MVA, 145/20-22-24 kV (2000) Iberdrola (Spain): 2 x 485 MVA, 415/19-17-15,5 kV (2006-2008) Endesa (Spain): 500 MVA, 225±15x1%/19-20-21 kV (2006) Iberdrola (Spain): 505 MVA, 230±2x1.5% / 17-19-21kV (2007) Gas Natural (Spain): 550 MVA, 400-230 / 21-19kV (2009) Ameren 1 x 745 MVA (USA): 345/17.1-19 kV (2012)

Customer need:

Contingency plan: Fast reaction during emergencies in HV transmission transformers

Simple transportation, reduced weight and dimensions

ABB response:

World’s first 400kV mobile transformer. World first 400kV nomex insulated transformer. Modular concept.

Case examples: 117MVA Standard insulation, 60Tons , 3.4m height

250MVA Hybrid insulation, 70Tons, 3.4m height

Standard 200MVA 120Tons, 4.6m height

Customer benefits:

Quick reaction, meaning $$ and time savings Simple transportation with no special permit Less than 2 weeks response time

Risk mitigation, reduction of insurance premiums © ABB 12/10/2010 | Slide 24

High capacity Mobile transformer World’s first 400kV mobile transformer World’s first 400kV transformer with Nomex insulation

© ABB 12/10/2010 | Slide 25

High capacity Mobile transformer World’s first 400kV transformer with Nomex insulation Simple

transportation, reduced weight and dimensions

Standard vehicle, no special permits

Less than 2 weeks response time

Very compact, footprint reduction

250MVA: Transportation 70Tons, 3.4m height

Simple transportation in standard road vehicle

Compact, reduced footprint

Quick installation

© ABB Group May 20, 2013 | Slide 26

High capacity mobile transformer

250MVA

150MVA

© ABB 2011 | Slide 27

Contingency solutions for power transformers Case example: Application to renewables HV modular mobiles

After a malfunction, there is no immediate need to replace the existing unit

This can be done in an scheduled outage

The mobile transformers are connected at the same point of connection, reusing all the substation controls and protections

© ABB 2011 | Slide 28

Contingency solutions for power transformers Case example: Application to renewables HV modular mobiles

Example of advantages

Very quick response compared to substitution with traditional spare

Response time < 2 weeks (vs response time with traditional spare > 12 weeks)

Savings in response time > 10 weeks

Single phase modules to build a three phase transformer

Main advantages: Overcoming transport limitations Very large transformers Overall reduced cost because of transportation


Flexiformer Modular system transformer

Flexiformer

450MVA, 400 / 230kV

Replacement of existing three phase transformer

Simple and lower cost transportation

Identical modules, allow standardization and simplification of spares

450MVA Case example


Documents

Mark Delaney – Business Development , May 2013 ... · PDF fileModular mobile transformer for 345 kV, 400 kV and 525 kV transmission. Normal or hybrid insulation