Parameters identification of synchronous machine based on sensitivity analysis

This paper summarized the testing methods of main parameters in synchronous generator, studied the sensibility of generator output acted on its parameters under sorts of experimental conditions and obtained a testing method of sorts of parameters in a generator. Based on symmetrical shortcut experiment of stable state, with the help of analyzing the ready-to-discerning parameters sensibility, the q-axis reactance of stable state was measured by changing series-wound resistors to alter the sensibility of q-axis parameters of stable state. The simulation analysis and experiment show that the method put forth in the paper is effective and the parameters measured by this method are accurate.