| 引用本文: | 刘洪顺,李庆民,徐亮,刘玉田,孙树敏.氧化锌避雷器式故障限流器对电力系统暂态稳定的影响[J].电力自动化设备,2007,27(8):51-54 |
| .Influence of MOA-based FCL on power system transient stability[J].Electric Power Automation Equipment,2007,27(8):51-54 |
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| 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。 |
| 关键词: 故障限流器,氧化锌避雷器,暂态稳定,功角特性 |
| DOI： |
| 分类号:TM712 |
| 基金项目: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)~~ |
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| Influence of MOA-based FCL on power system transient stability |
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LIU Hong-shun LI Qing-min XU Liang LIU Yu-tian SUN Shu-min
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| Abstract: |
| 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 power system. |
| Key words: fault current limiter,MOA,transient stability,power-angle characteristics |
