Analysis of System Key Variables under Power Fluctuation from Wind Power Cluster

The influence of power fluctuation from wind power clusters on power system is more and more significant. In order to describe this influence, a key variable set which can perfectly reflect dynamic characteristics of power system under wind power fluctuation is determined based on a pratical power system. Then, drift characteristics of the key variables under typical power fluctuation of wind power cluster are analyzed. The comparison of the drift characteristics between the key variables and the non-key variables verifies the feasibility and validity of the method.