电力系统在周期扰动下的混沌研究  

Research on chaos of power system under periodic disturbance

作　　者：李世作[1] 康世瑜[2] 

机构地区：[1]广西大学电气工程学院,广西南宁530004 [2]广西工业职业技术学院,广西南宁530001

出　　处：《广西大学学报（自然科学版）》2009年第4期580-585,共6页Journal of Guangxi University（Natural Science Edition）

基　　金：科技部科技型中小企业技术创新基金项目(03C26224500661)

摘　　要：为了研究电力系统在周期扰动下产生混沌的现象,提高电力系统的稳定性,将单机无限大系统转化为周期干扰下的Ham ilton系统,并利用M eln ikov方法研究电力系统产生混沌的物理条件。推导了M eln ikov函数具有简单零点的条件,得出了产生混沌的参数区域,为准确判别混沌振荡提供了计算依据。理论分析和数值仿真表明,如果扰动功率较小,则不会产生混沌;如果扰动功率较大,系统将出现混沌。In order to investigate the chaos of power system under periodic disturbance and enhance its security, single generator with infinite large system has been transformed into Hamilton system under periodic disturbance, and Melnikov method is used to study the physical condition that cause chaos. The condition that Melnikov function has simple zero point is inferred, and the parameter zone that cause to chaos is given. Theories analysis and numerical simulations also show that no cha- os will be produced if disturbance power is small. It will appear when disturbance power becomes large enough.

关 键 词：电力系统 周期扰动 混沌 HAMILTON系统 MELNIKOV方法 

分 类 号：TM712[电气工程—电力系统及自动化]