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Integration of Large Volumes of Wind Power in the Nordic Power System

EWEA Off-shore Wind Conference Stockholm 15 September 2009. Integration of Large Volumes of Wind Power in the Nordic Power System. Sture Larsson Technical Director, Executive Vice President Svenska Kraftnät The Swedish Transmission System Operator. Characteristics of the Nordic Power System.

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Integration of Large Volumes of Wind Power in the Nordic Power System

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  1. EWEA Off-shore Wind Conference Stockholm 15 September 2009 Integration of Large Volumes of Wind Power in the Nordic Power System Sture Larsson Technical Director, Executive Vice President Svenska Kraftnät The Swedish Transmission System Operator

  2. Characteristics of the Nordic Power System Hydro Demand and Thermal Generation

  3. Wind Power Development Scenarios in Sweden Snitt 1 Snitt 2 Snitt 4 • National planning target set to facilitate: 30 TWh / 12 000 MW • Summary of all identified projects: > 24 000 MW • Present installed capacity: Hydro 16 000 MW Nuclear 9 000 MW 5340 MW (*) 22 % 6400 MW 26 % 5580 MW 23 % 7080 MW 29 %

  4. Wind expansion Wind development in a broader Nordic perspective

  5. Extensive wind development scenarios • Wind capacity may reach levels that are most significant in relation to presently installed generation capacity • Implies a major transformation of the Nordic Power System

  6. Snitt 1 3000 MW Snitt 2 7000 MW Snitt 4 4500 MW Impact on central System Operator objectives Balance regulation Load-frequency control Transmission

  7. Covariations in windpower and demand- example from Germany

  8. Role of the Nordic Hydro Power • Real time balance regulation of wind variations • Back up for low wind generation • Central European requests for the regulation capacity

  9. Balance regulation in hydro Efficient, emission-free Extensively used today

  10. Balance Regulation in Hydro Power • The regulation capacity of the Nordic hydro power is expected to be used to its full ability • The capacity is not infinite • In conflict with local environmental concerns and legally binding constraints

  11. Market developments • Expanded Balancing market • Volatile pricing of balancing services • Development of the Nordic decentralised balancing concept interacting with the TSO:s central role • Spot market operating closer to real time

  12. Balance regulation in generation ……and on the demand side 13 Källa: Svensk Energi

  13. Smart Grids Development of the existing power system by integration of modern transmission and information technology • Demand flexibility, customer interaction • High capacity grid reinforcements

  14. South West Link, - a ‘Smart Grids’ application An optimal technology combination with high capacity, around 1 200 MW AC OH-line HVDC VSC

  15. Reinforced Nordic grid 2015

  16. Swedish National Grid Investments MSEK

  17. Enhanced transmission capacityneeds • Transport of wind generation • Transport of back-up generation • Facilitate use of efficient sources of balancing capacity

  18. Wind development calls for extensive reinforcements in transmission grids and interconnections Tedious licensing is a serious obstacle

  19. System Security • Large numbers of wind generators have a significant impact on the system security • Adverse simultaneous reactions to disturbances may lead to extensive black-outs • Resilience requirements also on wind installations, enforced in Grid Codes ”Fault ride-through”

  20. Thanks for your attention !

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