epri conference, august 2011 in palo alto volker hild, dietmar

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Grid Access of Green Energy HVDC and FACTS make the Grid Smart EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar Retzmann

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Page 1: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

© Siemens AG 2010Energy Energy SectorSector / Power Transmission Solutions / Power Transmission Solutions

Grid Access of Green EnergyHVDC and FACTS make the Grid Smart

EPRI Conference, August 2011 in Palo Alto

Volker Hild, Dietmar Retzmann

Page 2: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

Page 2 Aug - 2011© Siemens AG 2011

Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann

Regional GHG saving potential: China and US as top emitters which in turn offer highest savings

Urgency of action acknowledged: many country-wide binding GHG reduction targets issued

In spite of no global binding agreement, most governments committed to CO2 reduction as part of their energy policies

Power sector as the biggest CO2 emission contributor: offers strong saving potential

Power generation scenario analysis: shows various paths of CO2 emission and temperature increase

Life Cycle Analysis of carbon footprint: indicates strong potential of CO2 saving from Renewables

Power sector along with transportation and industry contribute to major global air pollution problems

Water depletion caused by power generation raised concerns as water scarcity becomes a major problem

Emerging technologies for unconventional fuel extraction also brings environmental concerns

Toxic pollutants from power generationthreaten people’s welfare and the environment

CO2 Reduction in Power Sector

Green House Gas Emission ReductionGlobal Environmental Impacts

Environmental concerns impacting on the Power Sector

Page 3: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

Page 3 Aug - 2011© Siemens AG 2011

Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann

Wind Power Installed in EuropeCurrent Status in 2010

Source: European Wind Energy Association, Wind in power 2010 European statistics, February 2011

+10 GW in 2010

Page 4: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

Page 4 Aug - 2011© Siemens AG 2011

Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann

Wind Power Installed in EuropeDevelopment Scenarios by EWEA

EWEA: European Wind Energy Association – Pure Power® Wind Energy Scenarios up to 2030 (Report 03-2008)

GW

Page 5: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

Page 5 Aug - 2011© Siemens AG 2011

Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann

Offshore Wind ParksNorth Sea & Baltic Sea

Source: EWEA

Page 6: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

Page 6 Aug - 2011© Siemens AG 2011

Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann

Grid AccessRelevant tasks and challenges

Definition of most economic Wind Farm Network and Grid Connection (AC versus DC).Define Layout and specify Components of the entire Grid Connection.

Perform Load-Flow Studies and Short-Circuit Calculations of the whole System.

Define the System Grounding Concept and perform Insulation Coordination for the entire Grid Connection.

Verification the static and dynamic Performance and Design of Reactive Power Compensation and / or DC System.

Evaluation of System Resonance behavior driven by the Cables, Transformers, Reactors and Wind Generators.

Ensure Conformity with the Grid Code.

Design of Protection, Control (SCADA) and Communication System.

System Efficiency: Evaluation of overall losses for various Scenarios.

Evaluation of electro-magnetic Interferences for the Grid Connection.

Optimization of System Reliability and Availability.

Obtain all relevant Permits from authorities

Page 7: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

Page 7 Aug - 2011© Siemens AG 2011

Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann

Compliance with Grid CodeFault Right-Through

No trip or disconnection allowed

2

1

2

3

Short tripping under specific conditions allowed. Resynchronization required – within 2 s

Disconnection allowed

4

Source: E.ON – Grid Code for High and Extra High Voltage, 04-2006

Page 8: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

Page 8 Aug - 2011© Siemens AG 2011

Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann

Grid AccessCompliance with Grid Code

Source: EWIS Interim Report June-2008

Page 9: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

Page 9 Aug - 2011© Siemens AG 2011

Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann

33 kV AC

132 kV AC

SVC PLUS

≤ 320 kV DC

HVDC PLUS

HVDC PLUS

33 kV AC

132 kV AC33 kV AC

132 kV AC

AC Solution for Grid Access

DC Solution forGrid Access

Grid AccessAC vs. DC connection

Page 10: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

Page 10 Aug - 2011© Siemens AG 2011

Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann

Example of AC ConnectionGreater Gabbard

140 Wind Turbines

2x offshore substations

~25km cable distance

3x SVC PLUS at point of connection

Page 11: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

Page 11 Aug - 2011© Siemens AG 2011

Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann

Example of AC ConnectionGreater Gabbard – Main Platform

2 Decks, Topside approx. 2000 t:16 incoming 33 kV Cables from Wind Turbine Array 3 x 33/132 kV Transformers, 3 Winding 90/90/180 MVA132 kV Cable Connections to TransformersAuxiliary/Earthing Transformers3 GIS 33 kV Switchboards4 GIS 132 kV CBsGenerator, Refuge, Fire Suppression, Metering, etc.Helipad

Page 12: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

Page 12 Aug - 2011© Siemens AG 2011

Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann

Example of AC Connection Greater Gabbard – Impressions

Page 13: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

Page 13 Aug - 2011© Siemens AG 2011

Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann

Example of AC Connection Greater Gabbard – Impressions

Page 14: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

Page 14 Aug - 2011© Siemens AG 2011

Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann

Example of AC Connection Greater Gabbard – Impressions

Page 15: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

Page 15 Aug - 2011© Siemens AG 2011

Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann

Example of DC Connection Projects under Execution

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Hamburg

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Denmark

GermanyNetherlands

Siemens WIPOSWind Power Offshore Platform

BorWin2800 MW

+/- 300 kV

HelWin1

+/- 250 kV576 MW

+/- 320 kV690 MWHelWin2

SylWin1864 MW

+/- 320 kV

2013

2013

2015

2014

Page 16: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

Page 16 Aug - 2011© Siemens AG 2011

Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann

Offshore Grid Vision 2030by European Wind Energy Association

* as of 2009/2010

Currently existing *

Currently planned *

Under Study *

Under Study (EWEA recommended)

EWEA Recommended Grids by 2020

EWEA Recommended Grids by 2030Source: European Wind Energy Association (EWEA) 2009/2010

Page 17: EPRI Conference, August 2011 in Palo Alto Volker Hild, Dietmar

Page 17 Aug - 2011© Siemens AG 2011

Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann

Contact

Siemens AGEnergy Sector

Power Transmission Solutions

Mr. Volker [email protected]

Mr. Dietmar [email protected]