摘要
大受端电网具有的外部特征和内部特征都决定了小干扰稳定具有不同的特点,小干扰稳定是大受端电网安全运行的必备条件。介绍了以华东大受端电网为研究对象,针对大受端电网不同发展时期的内外部特征,关注于特高压交流联网初期大区间弱阻尼振荡模式和大受端电网内部弱阻尼振荡模式,首次将阻尼转矩方法推广至大规模多机复杂系统,在全面分析大受端电网的小干扰稳定性的基础上,并且研究采用PSS和PMU协调控制、储能装置和小扰动稳定实时控制的低频振荡抑制新方法。
The small signal stability,which is distinctive in large receiving-end grids depending on the external and internal characteristics of the grid,is the necessary condition for secure operation of large receiving-end grids.The East China receiving-end grid was taken as the research object to analyze different developing stages of the grid,and weak interregional oscillation modes in the early period of UHV grid connection as well as local oscillation modes in the large receiving-end grid were illuminated. Additionally, the damping torque analysis （DTA） method was extended to large multi-machine systems, and novel methods for limiting damping low frequency oscillation （LFO） such as coordinated control of PSS and PMU, energy storage devices, and real-time control methods were analyzed.
出处
《华东电力》
北大核心
2009年第10期1671-1675,共5页
East China Electric Power
关键词
低频振荡
阻尼转矩法
大受端电网
储能
low frequency oscillation（LFO）
damping torque analysis（DTA） method
receiving-end grid
energy storage
