Patent ID: 7948217
Filing Date: 2011-05-24
Classification: H02J,Y02E

Abstract:
1. A distributed generation system, comprising: a distributed generation connected with a power system, a static var compensator connected with the power system at a point of connection between the distributed generation and the power system, and control means for detecting an output of the distributed generation and for controlling the static var compensator according to the detected output so that a voltage fluctuation developed at the point of connection attributable to the distributed generation is suppressed, means for detecting the voltage fluctuation at the point of connection attributable to an active power P of the distributed generation operated under a condition; means for obtaining, based on the voltage fluctuation, a target value α for ratios P/Q of the active power P to a reactive power Q, both generated by the distributed generation and the static var compensator; and means for calculating a reactive power command Q* to be generated by the static var compensator on the basis of the target value α; wherein the control means controls the static var compensator according to the reactive power command Q*.