Method and control arrangement for controlling a reactive power source

摘要

The present invention relates to a method for controlling a reactive power source in a wind power plant, the method comprising the steps of providing a wind turbine reactive power control signal and providing an active power reference signal, said active power reference signal being a measure of an active power production of the wind power plant. A control signal for the reactive power source is generated by combining the wind turbine reactive power control signal and the active power reference signal in such a way that the control signal for the reactive power source becomes a weighted signal of the wind turbine reactive power control signal. Moreover, the present invention relates to control units and wind power plants suitable for carrying out the present invention.

主权项

1. A method for controlling a reactive power source of a wind power plant comprising one or more wind turbines and having an amount of active power production, the method comprising:
receiving a wind turbine reactive power control signal corresponding to a wind turbine of the wind power plant; generating an active power reference signal representing the amount of active power production of the wind power plant, wherein the active power reference signal varies between zero and unity depending on the amount of active power production and increases monotonically with increases to the amount of active power production, wherein a zero value of the active power reference signal indicates that the wind power plant is producing no active power, and wherein a unity value of the active power reference signal indicates that the wind power plant is producing a nominal active power; and generating a control signal for the reactive power source based on a combination of the wind turbine reactive power control signal and the active power reference signal.