Integration of the German Offshore Wind Power Potential into the Electricity Supply System

1
Integration of the German Offshore Wind Power
Potential into the Electricity Supply System

B. Lange, Ü. Cali, R. Jursa, F. Schlögl, M.
Wolff, K. Rohrig




2
Overview
Introduction Online Monitoring and Wind Power
Forecasting Future challenges Wind Farm Cluster
Control Conclusion





3
Introduction
Wind Energy in Germany (12/05) Onshore 18300
MW 17400 WEA Offshore 0 50 of installed
capacity in Europe and 30 world wide
4
Introduction
yesterday conventional generation load
Typical load profile in Germany 1.-7. May
5
Introduction
today conventional generation load wind
generation
Load profile wind generation today
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Online Monitoring and Wind Power Forecasting
Representative wind farms (sub-stations) E.ON
59 sites 1912 MW VE-T 17 sites 499
MW RWE 16 sites 446 MW Online calculation of
wind generation Numerical weather prediction
(DWD) Short- and medium-term forecast with help
of artificial neural networks Wind Power
Management System WPMS
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Online monitoring and Wind Power Forecasting
Wind Power Management System (WPMS) In operation
at E.ON Netz, Vattenfall Europe Transmission,
RWE Transportnetz Strom, Currently implemented
at EnBW Transportnetze Basis for horizontal
exchange of wind power (EEG 14)
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I/Ro 1/2002
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Online Monitoring and Wind Power Forecasting
Development of forecasting error of the WPMS for
one TSO Introduction of operational
forecasting decreased the need for balancing
power Improvement in forecasting similar to
capacity increase
10
Future Challenges
Further growth planned / approved offshore
projects

• Planned offshore wind farms (2020)
• North Sea (AWZ) 18.600 MW
• Baltic Sea (AWZ) 1.700 MW

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Future Challenges
tomorrow konv. generation load wind
generation 0 !!
Load profile wind generation 2015
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Future Challenges

• Key issues for future grid integration in Germany
  
• balancing
• transport and congestion management
• grid management
• grid security
• frequency control

• Requires innovative management strategies for
  wind turbines, wind farms and wind farm clusters

13
Wind Farm Cluster Control

• Wind Farm Cluster Control
• Aggregation of on- and offshore wind farms
• allows innovative control strategies
• Enables TSOs to control a large number of
  turbines
• Allows control of wind farms with different
  capabilities

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Wind Farm Cluster Control
15
Wind Farm Cluster Control
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Wind Farm Cluster Control

• Innovative grid management strategies
• limitation of power output
• reactive power supply and voltage control
• provision of balancing power
• generation according to schedule
• limitation of power output gradients

17
Wind Farm Cluster Control
Index

• Limitation of power output gradients

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Wind Farm Cluster Control
Reserve power supply (500 MW)
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Wind Farm Cluster Control
guaranteed power supply
Guaranteed power supply
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Conclusion

• Today the main task for wind power integration is
  power balancing
• Solution
• Online monitoring and exchange
• Wind power forecasting
• Higher penetration leads to new challanges
• Transport
• Grid management and security
• Wind power needs capabilities similar to
  conventional power plants
• gt Wind Farm Cluster Control