Research on Screening Method of Synchronous Generator Dominant Parameters Based on Trajectory Sensitivity

Abstract

In order to reduce the complexity of synchronous generator dynamic parameter identification, the screening method of synchronous generator dominant parameters based on trajectory sensitivity is proposed. The mathematical model of trajectory sensitivity is established by the model and parameters of the generator. The influence degree of each parameter on the trajectory is calculated. According to the sensitivity of the trajectory, the sensitivity of dominant parameters Xd, Xq, Xd' and Xd" of the generator is analyzed, and then the results of the trajectory sensitivity are verified by time domain simulation of IEEE 3-machines 9-node system.