Patent ID: 8598726
Filing Date: 2013-12-03
Classification: F03D,H02J,H02P,Y02E

Abstract:
1. A wind turbine generator system equipped with a plurality of wind turbines, in which output power from the wind turbines is supplied to a utility grid via a common interconnection point, the wind turbine generator system comprising: an output power information section having output power information of each of the wind turbines; a priority setting section that sets priorities of the wind turbines in which the output power is to be reduced, the priority setting section receiving the output power information from the output power information section and providing higher priorities to the wind turbines whose output powers are larger when an output-power reduction demand to reduce the output power at the interconnection point to a predetermined output-power limit value is notified from the utility grid side; and an output-power command setting section that sets an output power of each of the wind turbines to be reduced to a predetermined minimum output-power value in a descending order of priority based on information from the priority setting section, said output-power command setting section reducing the output power based on output power commands for the wind turbines sequentially in descending order of priority until the output power at the interconnection point reaches the output power limit value, wherein the minimum output-power value is set to zero or a minimum output-power value at which the wind turbine can be continuously operated.