New A new method for PSS addressing and parameters of coordination and optimization

• 1、School of Electrical Engineering and Information，Sichuan University

Abstract：For the problem of parameter optimization coordination of PSS in multi-machine power system, this paper proposes a new method based on Phillips-Heffron model to search the install location of PSS. Use the system eigenvalue for the sensitivity of the PSS gain as the indicators of the install location. The sensitivity changes larger, the damp of system can be improved more effectively to install at the generator. Consider block matrix theory and Newton - Raphson iterative algorithm to establish a parameter optimization algorithm of multiple PSS. This algorithm views every parameter of PSS in the system as unknown to substitute into system state equation. Establish simultaneous equations through block matrix, then calculate the parameters of every PSS with Newton - Raphson iterative algorithm. This method takes interaction of each PSS into account and solves the problem of parameter optimization coordination of PSS. Simulate the location searching and parameter optimization coordination of PSS in multiple operating mode of Sichuan Power Grid. The results indicate that this method is effective and robust.

Keywords： PSS；sensitivity coordination optimization block matrix theory robust