Dr. Winter

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Voltage stabilityDFIG WEC performance during a system faultU/UnL1L2L3I [MVA]L1L2L3P/[MW]Q/[Mvar]10-150-550-5Control OFF0.00 0.25 0.50 0.75 1.00t [sec]ETG Conference Reliability of Power Supply 5 February 2003 Page 16Dr. Winter – Grid Planning
Voltage stabilityUCTE/CENTREL model - installed wind capacity: 5,000 MWSystem voltages after a 3-phase fault at Dollern substation – fault remedied after 150 msUnterweser380 kVDeviation of the system voltage from the nominal system voltage in %-50%Krümmel380 kV-50%Conneforde220 kV-50%SottrumEms Elbe110 kVOldenburgWeser Ems110 kV-50%-50%Hamburg NordSchleswig-Holstein110 kV-50%0.00 0.25 0.50 0.75 1.00t [sec]Voltage dip caused by the phase effects of wind farms, control of which ceasesin the event of a fault brought about by high rotor currents (around 75% of rated voltage)ETG Conference Reliability of Power Supply 5 February 2003 Page 17Dr. 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 and 14: Frequency stabilityAction taken in
Page 15: Voltage stabilityInduction generato
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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