A load parameter identification method based on wide area measurement

A load parameter identification method based on wide area information of power system is presented. Load parameters are identified by fitting the wide area dynamic characters, such as generator angle in this paper. Load parameters of wide area identification can not only simulate the local load dynamic characters but also reflect the wide area system dynamic characters, especially the character of low- frequency oscillation. From the results of trajectory sensitivity analysis, the oscillation of sensitivity trajectory based on wide area information is more evident than that based on local load information. Load parameters of wide area identification can fit the oscillation in power system more accurately. The simulation results prove that the wide area identification method is effective. It is expected that the wide area identification method will be used widely in large scale power system in the future.