Wind Cluster Management for Grid Integration of Large Wind Power

Transcription

1 1 Wind Cluster Management for Grid Integration of Large Wind Power B. Lange, M. Wolff, R. Mackensen, K. Rohrig German-Egyptian Symposium Wind Energy and Integration

2 Overview 2 Challenges for the Integration of Wind Power Wind Farm Cluster Concept Wind Farm Cluster Management System Field Test Summary and Outlook

3 Challenges for the Integration of Wind Power load w/o wind load incl. wind Load profile & wind generation Power [MW] Tomorrow: konv. generation = load wind generation Hours No conventional generation is running => Grid management (frequency, voltage control,...) needed

4 Challenges for the Integration of Wind Power I/Ro unbeeinflusst begrenzt 60 Leistung [MW] Too much power generation in one region at low load hours only for a few hours per year Zeit

5 Challenges for the Integration of Wind Power 5 Solutions Power output forecasting Generation control for high penetration of wind power Transport and congestion management Extension of capabilities to provide ancillary services New tools for the integration in the electricity supply system are needed Source: PE Netz Power output forecasting Generation control

6 Wind Farm Cluster Concept 6 Aim of wind power generation control Make wind power controllable Allow wind power to take part in grid management Focus is on transmission grid Control strategies Congestion Management Reduction of gradients Supply of reactive power / voltage control Supply of balancing power Scheduling of wind power feed-in

7 Wind Farm Cluster Concept 7 The German Wind Power Plant 2005 Total WT number: 17,400 WTs Installed capacity: 18,300 MW Wind power production: 26,3 TWh/y 50 % of installed capacity in Europe and 30 % world wide

8 Wind Farm Cluster Concept Cluster = all wind farms connected to a transmission grid node 8

9 Wind Farm Cluster Concept 9 TSO Cluster Wind farm Turbine Hierarchical control system Control of clusters according to the requirements of the TSO Wind Farm Cluster Management System (WCMS)

10 Wind Farm Cluster Management System 10 Four operation modes of the WCMS Active Power Limitation Supply of Reactive Power Supply of Balancing Power Scheduling

11 Wind Farm Cluster Management System Power [MW] : : : : :00 Active Power Limitation Time WP1 WP2 WP3 WP4 Sum Sum_uncontrolled

12 Wind Farm Cluster Management System Power [MW] :00 10:00 11:00 12:00 Time forecast Supply of balancing power by means of short term prediction and tolerance band

13 Wind Farm Cluster Management System upper level of tolerance band Power [MW] forecast lower level of tolerance band Supply of balancing power by means of short term prediction and tolerance band 0 9:00 10:00 11:00 12:00 Time

14 Wind Farm Cluster Management System upper level of tolerance band Power [MW] pos. balancing power feed-in schedule (neg. balancing power) forecast lower level of tolerance band Supply of balancing power by means of short term prediction and tolerance band 0 9:00 10:00 11:00 12:00 Time

15 Wind Farm Cluster Management System 15 Weather forecast Forecast Day ahead prediction Short-term prediction WF TSO target values P,Q... measured values P,Q P_available WCM Wind Farm Cluster Management target values P,Q WF n

16 Wind Farm Cluster Management System 16 DEMO!

17 Field Test kv grid Substation Wechold 220 kv grid 380 kv grid ind Farm ainsche/pennigsehl: 3 WT / 60,4 MW

18 Field Test Cluster available power Cluster actual power Cluster control settin Substation Wechold Penningsehl available power Penningsehl actual power 0 13:00 13:30 14:00 14:30 15:00 15:30

19 Summary 19 Integration of large amounts of wind power pose challenges to grid and system integration New tools for grid operation are necessary For generation control, the wind farm cluster concept has been developed Cluster = all wind farms connected to one transmission grid node The Wind Farm Cluster Management System (WCMS) has been developed at ISET It enables the TSO an extended control of the wind power plant Its capabilities are currently demonstrated in a field test in Germany

20 Outlook: WCMS in Spain and Portugal 20 WCMS will be demonstrated in Spain and Portugal European research project Wind on the Grid Additional hierachy level: Wind farm operator New control strategy: Voltage control

21 Outlook: Combination of different renewable energies 21 Virtual power plant demonstration Combination of wind, pv, biogas and pumped hydro Model 1/10000 of German load Wind Solar Biogas Hydro GWh 16,8 6,0 10,0 8,2 MW 12,6 5,5 4,0 1,0

22 Outlook: Combination of different renewable energies 22 System is running operationally since 3rd of July

23 Thank you for your attention! 23 e.v. Systems Technology for the Use of Renewable Energies and Efficient Energy Conversion Research partly funded by: reisi.iset.uni-kassel.de