应用T-S模糊方法对铁磁谐振过电压的混沌抑制  

Chaos Controlling in Ferroresonance Overvoltage with T-S Fuzzy Method

作　　者：代姚[1] 司马文霞[1] 孙才新[1] 郑哲人[1] 姜赤龙[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030

出　　处：《高电压技术》2010年第4期878-883,共6页High Voltage Engineering

基　　金：国家重点基础研究发展计划(973计划)(2009CB724504)~~

摘　　要：抑制和控制铁磁谐振过电压对实现智能电网中重要的"自愈"功能具有重要的意义。为此,运用非线性动力学理论于抑制中性点接地系统所发生的具有混沌效应的铁磁谐振。通过分析铁磁谐振电路所表现出的混沌特性,并针对电力系统中参数无法完全已知的限制,首次提出建立谐振系统的T-S模糊模型,制定合适的模糊规则,并应用平行分布补偿法设计模糊控制器来抑制铁磁谐振过电压,以达到迅速控制的良好效果。另外,通过Lya-punov理论验证了该控制器符合系统稳定性要求。仿真结果也验证了该方法的有效性,同时克服了传统方法对参数完全精确已知的限制。Suppressing overvoltage actively is of great significance to implementing ＂Smart Grid＂ strategy. We applied the non-linear dynamics theory in suppressing ferroresonance of chaos. T-S fuzzy model was constructed to approximate the neutral system. Its IF-THEN rule was made by linear state space subsystems. And the fuzzy controller can be obtained by using method of Parallel Distributed Compensation （PDC） to suppress the ferroresonance over-voltage. The stability of controller is proved by the Lyapunov theory. The illustrative examples demonstrate the effectiveness of the presented approach. At the same time the limitation in traditional ways can be overcome by using fuzzy control technique.

关 键 词：中性点接地系统 铁磁谐振 过电压 混沌控制 T-S模糊模型 平行分布补偿 

分 类 号：TM864[电气工程—高电压与绝缘技术]