Multifunctional transformers and innovative solutions for contingency planning

Transcription

1 Mark Delaney Business Development, May 2013 Multifunctional transformers and innovative solutions for contingency planning January 2010 Slide 1

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 2011 Slide 2

3 Contingency solutions for power transformers ABB 2011 Slide 3 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

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) May 20, 2013 Slide 4

5 Contingency solutions for power transformers 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 ABB 2011 Slide 5

6 The Polytransformer Multifunctional spare transformer for T&D 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, / kv HIGH LOW TERTIARY 400 kv 230 kv 33 kv 400 kv 138 kv 33 kv 400 kv 110 kv 33 kv 400 kv 230 kv 26.4 kv 400 kv 138 kv 26.4 kv 400 kv 110 kv 26.4 kv 400 kv 230 kv 24 kv 400 kv 138 kv 24 kv 400 kv 110 kv 24 kv 230 kv 132 kv 19 kv 230 kv 107 kv 19 kv 230 kv 132 kv 15 kv 230 kv 107 kv 15 kv 230 kv 132 kv 13.8 kv 230 kv 107 kv 13.8 kv Case example (US) MVA 3ph auto Same power at all ratios (500MVA) 230 / kV January 2010 Slide 6

7 Universal Generator Transformer Multi-location spare for generation 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 25 combined cycle power plants 44 transformers Universal GSU 1 Universal GSU 2 230/ kv 4 Power Plants 4 Transformers Universal GSU 3 Universal GSU 4 230/ kv 2 Power Plants 2 Transformers 400/ kv 8 Power Plants 15 Transformers 230/ kv 2 Power Plants 2 Transformers Case example, CCPP in Spain: 4 Universal transformers, electrical and mechanical compatibility Cover 23 out of 44 Transformers / 16 out of 25 Power Plants January 2010 Slide 7

8 Universal GSU A practical case 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 Escombreras: 3 x 380 MVA 415 / 17 kv CCC Iberdrola Arcos III: 3 x 370 MVA 415 / 17 One single spare for 15 transformers (7 different designs). 8 power plants / 4 geographical locations. January 2010 Slide 8

9 Universal GSU A practical case 1 x 2 x 2 x 3 x 1 x 3 x 3 x Three (3) different low voltages. No load tap changer regulation. Different vector groups. Interchangeability / adaptation for connection to different bus duct connections. January 2010 Slide 9

10 Universal GSU Electrical compatibility 15.75kV LV connection January 2010 Slide 10

11 Universal GSU Electrical compatibility 19kV LV Connection January 2010 Slide 11

12 Universal GSU Electrical compatibility 17kV LV Connection January 2010 Slide 12

13 Universal GSU Electrical compatibility Different vector group January 2010 Slide 13

14 Universal GSU A practical case 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. January 2010 Slide 15

15 Universal GSU Mechanical compatibility Three different covers to fit mechanically in different locations. One transport cover is manufactured to allow simple transportation. January 2010 Slide 17

16 Universal GSU Mechanical compatibility January 2010 Slide 18

17 Universal GSU Mechanical compatibility Different bus duct heights January 2010 Slide 19

18 Universal GSU Mechanical compatibility Different bus duct arrangements January 2010 Slide 20

19 Universal GSU Mechanical compatibility Mechanical adaptations: Different locations of conservator January 2010 Slide 21

20 Universal GSU Multi-location spare for generation 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 Case example (US) MVA 3ph Multi-voltage to match two generators 17.1kV and 19KV Mechanical compatibility January 2010 Slide 22

21 ABB Polytransformer and mobile transformers Reference list Auto Polytransformers REE (Spain): 4 x 450 MVA, / kv ( ) REE (Spain): 8 x 500 MVA, / kv ( ) Iberdrola (Spain): 2 x 200 MVA, / kv ( ) Entergy (US): 1 x 500MVA, 230 / kV (2012) Mobile HV T&D REE (Spain): 3 x 117 MVA, / kv ( ) REE (Spain): 3 x 250 MVA, / kv ( ). Hybrid insulation January 2010 Slide 23 Universal GSU Polytransformers Western Resources (USA): 750 MVA, /24-26 kv (1999) Western Resources (USA): 300 MVA, / kv (1999) Ameren 1 x 670 MVA (USA): 345/ kv (2000) Reliant Energy, HL&P (USA): 800 MVA, 145/ kv (2000) Iberdrola (Spain): 2 x 485 MVA, 415/ ,5 kv ( ) Endesa (Spain): 500 MVA, 225±15x1%/ kv (2006) Iberdrola (Spain): 505 MVA, 230±2x1.5% / kV (2007) Gas Natural (Spain): 550 MVA, / 21-19kV (2009) Ameren 1 x 745 MVA (USA): 345/ kv (2012)

22 High capacity Mobile transformer World s first 400kV mobile transformer World s first 400kV transformer with Nomex insulation ABB 12/10/2010 Slide 24 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

23 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 12/10/2010 Slide 25

24 High capacity mobile transformer 150MVA 250MVA May 20, 2013 Slide 26

25 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 ABB 2011 Slide 27 The mobile transformers are connected at the same point of connection, reusing all the substation controls and protections

26 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) ABB 2011 Slide 28 Savings in response time > 10 weeks

27 Flexiformer Modular system transformer Single phase modules to build a three phase transformer Main advantages: Overcoming transport limitations Very large transformers Overall reduced cost because of transportation January 2010 Slide 29

28 Flexiformer 450MVA Case example 450MVA, 400 / 230kV Replacement of existing three phase transformer Simple and lower cost transportation Identical modules, allow standardization and simplification of spares January 2010 Slide 30

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