Method for controlling a wind farm, wind farm controller, wind farm, computer-readable medium and program element
View Patent ↗A method is provided for controlling a wind farm connected to a grid. The wind farm includes a wind farm emergency generator and at least a first wind turbine. The first wind turbine includes a wind turbine transformer, a wind turbine converter and auxiliary equipment. The method includes detecting a lost grid connection, providing active power to the auxiliary equipment via the wind farm emergency generator, providing reactive power via the wind turbine converter.
1. A method for controlling a wind farm when a connection to the grid is lost,
wherein the wind farm comprises a wind farm emergency generator, and at least a first wind turbine, wherein the first wind turbine comprises a wind turbine transformer, a wind turbine converter and auxiliary equipment, wherein the method comprises:
providing active power to the auxiliary equipment via the wind farm emergency generator, and
providing reactive power via the wind turbine converter.
2. The method for controlling a wind farm as set forth in claim 1 , wherein the wind farm further comprises a wind turbine switch for connecting a second wind turbine,
wherein the method further comprises:
closing the wind turbine switch for connecting the second wind turbine.
3. The method for controlling a wind farm as set forth in claim 2 , wherein providing reactive power via the wind turbine converter comprises providing reactive power for energizing a wind turbine transformer of the second wind turbine.
4. The method for controlling a wind farm as set forth in claim 1 , wherein providing active power to the auxiliary equipment via the wind farm emergency generator comprises ramping up slowly a wind farm emergency generator voltage from zero to nominal.
5. The method for controlling a wind farm as set forth in claim 1 , the method further comprises,
compensating reactive power via a shunt reactor.
6. The method for controlling a wind farm as set forth in claim 1 , the method further comprises
compensating reactive power via the static synchronous compensator.