Dr. Winter

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Frequency stabilityVoltage levels when a wind farm is integrated into the 110 kV grid110 kV 20 kV0.69 kV1 2 3S1S2ASG3~As per December 2002: When the terminal voltage is 80% of thenominal system voltage, the wind energy converters aredisconnected from the grid for an indefinite period.ETG Conference Reliability of Power Supply 5 February 2003 Page 10Dr. Winter – Grid Planning
Frequency stabilitySystem voltage waveshape during and after system faultsU N [pu]1,11,00,90,80,70,60,51.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75t/sSystem voltage at the connecting point (110 kV)System voltage on the main bus bar in the wind farm (20 kV)System voltage at the wind generator (0.7 kV)System voltage at the wind generator (0.7 kV), voltage controlETG Conference Reliability of Power Supply 5 February 2003 Page 11Dr. 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: Frequency stabilityVoltage profile
Page 13 and 14: Frequency stabilityAction taken in
Page 15 and 16: Voltage stabilityInduction generato
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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