氧化锌避雷器式故障限流器对电力系统暂态稳定的影响  

Influence of MOA-based FCL on power system transient stability

作　　者：刘洪顺[1] 李庆民[1] 徐亮[1] 刘玉田[1] 孙树敏[2] 

机构地区：[1]山东大学电气工程学院,山东济南250061 [2]山东电力研究院,山东济南250021

出　　处：《电力自动化设备》2007年第8期51-54,共4页Electric Power Automation Equipment

基　　金：山东省自然科学基金资助项目(Q2004F03);山东省中青年科学家基金资助项目(2005BS01011)~~

摘　　要：介绍了氧化锌避雷器式故障限流器的工作原理和分析模型,针对安装该种故障限流器的单机-无穷大系统,研究了不同工况下发电机的功角特性曲线,利用等面积定则详细分析了其暂态物理过程。在此基础上定义了一系列定量描述暂态稳定的指标,分别针对有无故障限流器2种情况,应用Matlab构建了单机和多机系统的仿真模型,分析了不同限流比、故障类型和故障切除时间下的系统暂态稳定特性。理论分析和仿真结果都表明:安装氧化锌避雷器式故障限流器,可有效抑制摇摆曲线的振荡幅度并缩短衰减周期,延长系统的极限切除时间,提高系统的暂态稳定能力。The operating principle and analytical model of MOA（Metal Oxide Arrester）- based FCL （Fault Current Limiter） are presented. For the typical one-machine infinite-bus system with FCL, the power- angle characteristics of generator are studied in various operation conditions,and its transient physical process is analyzed in detail using Equal Area Criterion,based on which a series of indexes are defined to describe transient stability quantificationally. Simulation models of one - machine and multi- machine systems with and without FCL are constructed with Matlab,based on which the transient stability characteristics of power systems are studied for different current-limiting factors,fault types and fault clearance times. Both theoretical analysis and simulative results show that, the installation of MOA- based FCL can effectively suppress the oscillatory amplitudes of swing curves,reduce the decaying period,extend the critical clearance time and hence improve the transient stability of oower system.

关 键 词：故障限流器 氧化锌避雷器 暂态稳定 功角特性 

分 类 号：TM712[电气工程—电力系统及自动化]