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Solutions for large-scale wind power integration in the European system

Solutions for large-scale wind power integration in the European system. EWEC2009 Energy and power management Frits Verheij March 18, 2009. Outline. The impact of wind power Challenges for large-scale integration Findings of TradeWind workshop 12-02-2009 Energy storage. .

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Solutions for large-scale wind power integration in the European system

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  1. Solutions for large-scale wind power integration in the European system EWEC2009 Energy and power management Frits Verheij March 18, 2009

  2. Outline • The impact of wind power • Challenges for large-scale integration • Findings of TradeWind workshop 12-02-2009 • Energy storage

  3. • Less GHG emissions • Less dependent on fossil fuels, and thus • Less dependent on energy policy of other countries • More jobs • Lower electricity prices • Larger variations in power supply • Less predictable power output • Large investments needed • Cross-border cooperation required • Change of ‘power’  The impact of wind power

  4. As wind power capacity is growing fast …

  5. … the impact of wind power creates pressure on the industry Public & Interest groups Wind power industry Grid operators Utilities & IPPs Gov’ment & Regulators

  6. Challenges for large-scale integration • Different support mechanisms are applied in different electricity markets • The present grid is not designed to facilitate large volumes of wind generated electricity … • … and building wind farms at remote areas are increasing the challenges for grid operators

  7. Some findings from TradeWind workshop (1/3) • Flexibility of the electricity supply system is required to facilitate large volumes of wind power (2020+) • Single electricity market enables international trading of wind power (and of other power sources) • Reinforcement of the grid is needed already, apart from the growth of wind power

  8. Some findings from TradeWind workshop (2/3) • Think BIG: the future grid should be designed for the next 50 to 60 years • Combine long-term thinking with short-term actions, i.e. we should start designing the future grid now as building new overhead lines is a 6-10 years process • Wind farms should be designed as modern power plants which supports the grid • Functions could be frequency control, voltage fault ride through, reactive power, et cetera

  9. Some findings from TradeWind workshop (3/3) • We will have too little time to wait for new European rules so we better start with concrete projects and develop best practices, e.g. Krieger’s Flak • A common vision and close co-operation between politicians, governments, regulators, grid operators, utilities, wind farm operators, interest groups and other stakeholders is required to make wind power also a success on the longer term

  10. Additional thoughts • Add quickly dispatchable power plants to electricity system • Develop demand side management • Add more electricity storage facilities to the system Advanced wind power curtailment?

  11. Combination of electricity storage and wind energy seems logical … • Electricity storage is well-established practice • In 1999 the EU had 32 GW capacity of pumped storage out of a total of 188 GW of hydropower and representing 5.5% of total electrical capacity in the EU • Wide variety of (mainly small-scale) storage applications

  12. … besides storage adds value to the energy sector • Decouples supply from demand • Increases technical reliability of power supply • Reduces loads on conventional power plants due to less frequent adjustments  less maintenance • Absorbs unpredicted variations in wind power • Balances wind during windless or stormy periods • Provides more flexibility in utilization of conventional power plants • Stabilizes costs of electricity (peak shaving) and decreases imbalance costs

  13. Main applications of large-scale electricity storage • Spinning reserve (hours) • Other ancillary services like frequency control and voltage support (minutes) • Download capacity base load units during off-peak hours + deliver additional power during peak loads Present Energy management Future • Balancing unexpected variations in wind energy (actual versus forecast) • Download capacity wind power plants during hours of strong winds

  14. The Energy Island Innovative plan for large-scale energy storage Characteristics: • Artificial island in North Sea, 15 km from the coast, size of 10x6 km2, water depth of sub surface inner lake is -32 to -40 m • Storage capacity of 20 GWh, able to provide about 1.500 MW • Enabler for other functionalities, e.g. 300-500 MW wind turbines, marina for maintenance offshore wind farms, other harbour facilities, substation, aquatic biomass, tourism, nature, agriculture, fish farming, …

  15. Thank you for your attention Your contact person: Frits Verheij KEMA Arnhem | The Netherlands T/M +31 (0) 26 356 2445 frits.verheij@kema.com www.kema.com

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