基于相平面轨迹凹凸性的暂态稳定性判别方法评述  

Review on Transient Instability Detection Method Based on Convexity and Concavity of Phase Trajectory

作　　者：赵晋泉[1] 张盼[1] 章玉杰[1] 

机构地区：[1]可再生能源发电技术教育部工程研究中心(河海大学),南京210098

出　　处：《南方电网技术》2016年第7期45-50,共6页Southern Power System Technology

基　　金：国家自然科学基金资助项目(51577049)~~

摘　　要：基于响应的暂态稳定判别与控制技术是目前电力系统暂态稳定分析领域的热点,该技术具有不依赖于系统模型及参数、可以实时判别和计算量小等优点。其中基于角速度-功角相平面轨迹凹凸性的暂态失稳判别是-个活跃的研究分支。本文对这种暂态稳定性判别方法的原理进行了介绍,进而对方法应用于多机系统时存在的问题进行了分析和评述,并对IEEE 39节点系统进行了仿真分析。结果表明:该方法应用于多机系统时,由于分群的不正确及聚合等值后单机系统参数的时变性易造成相平面轨迹的复杂特性,从而容易将稳定案例误判为失稳。The response-based transient stability control technology is a hot issue in real-time transient stability analysis of power sys-tem. It has such advantages as independent of modle and parameters of system,real-time detctction and less calculation. Transient in-stability detection method based on angular velocity-rotor angle trajectory is currently a very active branch of response-based real-time transient stability analysis. Firstly,the theory of this method is introduced,then the problems in application of the method to multi-ma-chine power systems are analyzed and discussed. The simulation results on IEEE-39 bus system show that when this method is applied to multi-machine power system,because of incorrect generator-clustering and the time-varying parameter of the equivalent system,this method will produce incorrect stability detection.

关 键 词：电力系统 暂态稳定 广域量测系统 相平面轨迹 凹凸性 

分 类 号：TM743[电气工程—电力系统及自动化]