Dr. Winter

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Voltage stabilityASG3~Wind energy converter (WEC) with an asynchronous generator• High-speed asynchronous generator• Gearbox• Reactive-power compensation by means of condensers• Non-variable rotor speed• Reactive power only adjustable in steps• No voltage control / cos phi control• Short-term reactions after fault rectificationSG3~WEC with synchronous generator• Low-speed synchronous generator witha large number of pole pairs• No gearbox• Variable rotor speed• Pulse-controlled inverter (var. P/Q)• Voltage control / cos phi control• No reactionsASG3~WEC with double-fed induction generator• High-speed asynchronous generator• Gearbox• Variable rotor speed• Fully adjustable reactive power• Voltage control / cos phi control• Reactions after fault rectification lasting more than 15 seconds• Reactions when control is switched on after system faultsETG Conference Reliability of Power Supply 5 February 2003 Page 14Dr. Winter – Grid Planning
Voltage stabilityInduction generator WEC performance during a system faultU/UnL1L2L3I/[MVA]L1L2L3P/[MW]Q/[Mvar]10-1100-10100n [1/min]-101800170016000.00 0.25 0.50 0.75 t [sec]1.00ETG Conference Reliability of Power Supply 5 February 2003 Page 15Dr. Winter – Grid Planning
Page 1 and 2: Grid PlanningDr. WinterIntegrating
Page 3 and 4: Installed Capacity in MWDevelopment
Page 5 and 6: Thermal limitsStructurally weakregi
Page 7 and 8: Capacity MWSystem control / Frequen
Page 9 and 10: Frequency stabilityVoltage profile
Page 11 and 12: Frequency stabilitySystem voltage w
Page 13: Frequency stabilityAction taken in
Page 17 and 18: Voltage stabilityUCTE/CENTREL model
Page 19 and 20: Requirements of the dynamic perform
Page 21 and 22: WEC failures during a 3-phase syste

Dr. Winter

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