摘要
介绍电力系统分岔与混沌的研究现状和方向 ,讨论功角稳定性、电压稳定性与分岔之间的关系 ,并回顾各种方法在电力系统分岔中的应用。进一步的研究方向包括在负荷实际的动态特性下深入研究分岔特性与电压崩溃机理 ;定义电压稳定裕度和距离电压崩溃的裕度 ;根据多机摇摆曲线的混沌程度来估计后期稳定性。建议将混沌的概念从传统的有界范畴拓广到系统在趋于无界 (失稳 )的模式方面的貌似随机性 ,即无界混沌。
An overview of studies on bifurcation and chaos in power systems is provided. The significant impacts of these nonlinear dynamics on both angle and voltage stabilities are discussed. It is emphasized that the mechanism of chaos in a multimachine system is quite different from that in a two-machine system. Breakthroughs on nonlinear stability theory are needed in order to define the stability margin for voltage collapse, to estimate the stability beyond the observation period and terminate the simulation as early as possible. Differing from the general concept of chaos concerning only bounded dynamics, new concepts are proposed for chaos of unbounded modes.
出处
《电力系统自动化》
EI
CSCD
北大核心
2002年第16期9-15,共7页
Automation of Electric Power Systems
基金
国家重点基础研究专项经费资助项目 (G19980 2 0 30 1)
国家自然科学基金重点资助项目 (19990 5 10 )
关键词
电力系统
分岔
混沌
Arnold扩散
电压稳定
local bifurcation
global bifurcation
multimachine chaos
Arnold diffusion
chaos of unbounded modes
