Design of GPSS based on wide — area measurement signal

Low frequency oscillation (LFO) is an important problem affecting the stability of power system operation. Power System Stabilizer on Governors (GPSS) can effectively suppress the LFO problem. In order to further suppress the oscillation of the system, a GPSS based on wide-area measurement signal is designed in this paper. The wide-area GPSS uses the wide-area measurement system to collect signals of the remote unit. And the controller parameters are optimized by minimizing the generators' power angle deviation, which is the objective function. Finally, the wide-area GPSS acts on the governor side of generators. The simulation results show that the wide-area GPSS can effectively suppress the low-frequency oscillation of the system and improve the damping characteristics of the system.