epri conference, august 2011 in palo alto volker hild, dietmar
TRANSCRIPT
© 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 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 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 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 Aug - 2011© Siemens AG 2011
Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann
Offshore Wind ParksNorth Sea & Baltic Sea
Source: EWEA
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 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 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 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 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 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 Aug - 2011© Siemens AG 2011
Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann
Example of AC Connection Greater Gabbard – Impressions
Page 13 Aug - 2011© Siemens AG 2011
Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann
Example of AC Connection Greater Gabbard – Impressions
Page 14 Aug - 2011© Siemens AG 2011
Energy Sector / Power Transmission SolutionsV. Hild, D. Retzmann
Example of AC Connection Greater Gabbard – Impressions
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 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 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]