互联电网低频振荡的相关问题及研究

Research and problems of low frequency oscillation in interconnected power networks

综述了电力系统低频振荡发生的机理、分析方法、抑制措施及存在的相关问题;并提出建立基于广域测量系统(WAMS)的实时低频振荡监控系统,将频域分析法与Prony辨识法结合起来,在线分析系统的振荡模态;并首次提出将模态级数法用于互联电网“超低频振荡”的机理分析。

This paper reviewed mechanism, analysis methods, control measures of low frequency oscillation and its exiting problems in power system. An online monitoring system of low frequency oscillation based on Wide Area Measurement System （WAMS） was presented. The trends were indicated to combine the spectral algorithm with Prony algorithm for researching the oscillation modes of system, and to apply a novel method-modal series method, for analyzing the mechanism of “the super tow frequency oscillation” in interconnected power networks.