Patent ID: 8049352
Filing Date: 2011-11-01
Classification: F03D,F05B,H02J,H02P,Y02E

Abstract:
1. A method for incrementally increasing a total reactive power capability of a cluster of wind turbines operationally connected to a grid, the total reactive power capability of said cluster being increasable in discrete steps of predetermined reactive power amounts, wherein each wind turbine in said cluster of wind turbines is assigned one predetermined amount of reactive power, the method comprising: generating a voltage value representative of a grid voltage level; determining a total required reactive power value based on the voltage value; and activating at least one wind turbine in said cluster to increase the total reactive power capability of said cluster of wind turbines from a present value to the required total reactive power value, said activation involving a turn on or a turn off of the predetermined amount of reactive power assigned to said at least one wind turbine.