电力系统低频振荡分岔和混沌机理述评
A Review of Low Frequency Oscillation Mechanism in Power System Based on Bifurcation and Chaos
宋墩文 1姜苏娜 2郝建红 2宾虹 2杨学涛 1周榆晓2
作者信息
- 1. 中国电力科学研究院,北京100192
- 2. 华北电力大学电气与电子工程学院,北京102206
- 折叠
摘要
电力系统作为典型的强耦合、高度非线性、多变量的动态系统,具有复杂的非线性动力学行为,系统自身的非线性物理特性是低频振荡的重要诱因之一.从分岔(分歧)和混沌理论角度,总结了低频振荡非线性机理的研究成果,内容涉及低频振荡中非线性奇异现象的发现和产生原理,单机小系统向多机大系统推广的非线性机理,分岔点及混沌吸引子的搜寻方法,分岔和混沌引发的振荡控制等方面.结合实际电网安全运行要求,在振荡模式识别、低频振荡引发机理鉴别等五方面提出非线性引发低频振荡需要解决的问题.对利用非线性动力学理论研究电力系统低频振荡现象具有一定的引导意义.
Abstract
As a typical strong coupling,highly nonlinear and muhi-variable dynamic system,power system has complex nonlinear dynamics behaviors.Its nonlinear physical characteristic is one of the important causes of low frequency oscillation (LFO).Basing on bifurcation and chaos theory,this paper summarizes the research achievements of LFO nonlinear mechanism,including the discovery and mechanism of nonlinear singular phenomena,nonlinear mechanism of promoting a small single-generator system to large multi-generator system,searching methods of bifurcation and chaos attractor,controlling of bifurcation and chaos parameters,etc.Considering the requirements of grid safe operation,five problems of nonlinear LFO are proposed,such as identification of LFO triggering mechanism,oscillation patterns recognition and so on.This paper aims to provide guidence in researching low frequency oscillation of power system in field of nonlinear dynamics.
关键词
低频振荡/非线性机理/分岔/混沌/控制Key words
low frequency oscillation/nonlinear mechanism/bifurcation/chaos/control measures引用本文复制引用
出版年
2014
NETL
NSTL
万方数据