基于多频段电力系统稳定器的电力系统暂态稳定性优化策略

针对风电场接入互联系统后产生的暂态稳定性问题，分析了低频振荡产生的原因，提出将多频段电力系统稳定器(multi-band power system stabilizer，MB-PSS)与静止无功补偿器(static var compensator，SVC)联合运行的控制策略，并对二者设置目标函数进行优化，从而提高系统运行的稳定性。将风电场接入IEEE两区域四机互联系统，在MATALB仿真平台对4种工况进行了仿真验证，结果表明所提策略在抑制区间低频振荡和稳定系统电压方面性能优越，能有效提高电力系统的暂态稳定性和电能质量。

Optimization Strategy of Power System Transient Stability Based on Multi-band Power System Stabilizer

Aiming at the transient stability problem after the wind farm is connected to the interconnection system,the causes of low-frequency oscillations were analyzed.A control strategy for multi-band power system stabilizer(MB-PSS)and static var compensator(SVC)combined operation was proposed,and the objective function was optimized to set improve the stability of system operation.The wind farm was connected to an IEEE two-region four-machine interconnected system,and the four operating conditions were simulated and verified on the MATALB simulation platform.The results show that the proposed strategy has superior performance in suppressing interval low-frequency oscillation and stabilizing system voltage,and can effectively improve the power system Transient stability and power quality.