摘要
提出电力系统稳定器(PSS)的输入信号由本地测量信号和广域测量信号组成,从而构成2级PSS控制。本地测量信号采用本地发电机角频率,广域测量信号分别采用联络线功率和区间相对角频率。分析表明广域反馈具有相位稳定的特点,可以根据参与因子和传递函数留数选取广域测量信号,通过模式辨识进行2级PSS控制,抑制区间低频振荡。2区域电力系统上的仿真结果表明,2级PSS控制能有效抑制区间低频振荡,提高互联系统的传输容量,适用的频率范围广。
The input to the power system stabilizer （PSS） consists of two signals, local signal and global signal respectively, which forms two-level PSS control. Local signal is local generator rotor speed while two global signals are suggested as the tieline active power and inter-area speed difference signals. The phasor of global feedback is stable. Global measurement signal is selected according to participation factor and residue of transfer function and PSS is configured by mode analysis. Simulations on two-area/our-machine power system demonstrate the advantage of two-level PSS control in enhancing power angle stability and transfer capability.
出处
《电力系统自动化》
EI
CSCD
北大核心
2006年第24期11-16,48,共7页
Automation of Electric Power Systems
基金
国家自然科学基金重大项目(50595413)。~~
关键词
广域测量系统
低频振荡
电力系统稳定器
wide area measurement system （WAMS）
low frequency oscillation
power system stabilizer （PSS）wide area measurement system （WAMS）
low frequency oscillation
power system stabilizer （PSS）
