Patent ID: 7531911
Filing Date: 2009-05-12
Classification: H02J,Y02E

Abstract:
1. A method of reactive power regulation in a wind farm having a plurality of wind turbines, comprising: obtaining a reactive power setpoint (Sp_Q); measuring a reactive power output of the wind farm (Av_Q); calculating an error (ε_Q) between the reactive power setpoint and the measured reactive power output; using the error (ε_Q) as input to a PID controller to generate a relative reactive power command (Sp_% Qmax); sending the relative reactive power command (Sp_% Qmax) to each of the plurality of wind turbines; and applying the relative reactive power command (Sp_% Qmax) as a percentage to an instantaneous maximum reactive power capacity (Qwt_max) in performing power regulation for each of the wind turbines.