SVC与TCSC优化配置在电力系统静态电压稳定中的应用  

Application of SVC and TCSC Optimal Configuration in Static Voltage Stability of Power System

作　　者：李娟[1] 许欣[1] 李壮[1] 庄海军[2] 齐永志 高松[4] 

机构地区：[1]东北电力大学电气工程学院,吉林吉林132012 [2]国网河南省电力公司郑州供电公司,河南郑州450000 [3]黑龙江省第一水文地质工程地质勘测院,黑龙江齐齐哈尔161000 [4]国网吉林省电力有限公司电力科学研究院,吉林长春130021

出　　处：《广东电力》2016年第4期67-72,78,共7页Guangdong Electric Power

摘　　要：为提高电力系统静态电压的稳定性,提出将静止无功补偿器(static var compensator,SVC)与可控串联补偿装置(thyristor controlled series compensator,TCSC)相结合并作用于电力系统线路中,运用动态连续潮流法计算电力系统静态电压稳定裕度的新方法。首先建立SVC与TCSC的稳态模型;然后引入节点参数因子和支路参数因子的概念,运用模态分析法确定系统母线和支路的薄弱点,并联SVC对母线薄弱点进行无功补偿,串联TCSC优化薄弱线路功率分配;最后运用动态连续潮流法求出静态电压稳定裕度。以IEEE-14节点系统进行仿真计算,并对无灵活交流输电(flexible AC transmission system,FACTS)装置、单独安装SVC或TCSC、SVC和TCSC相结合情况下的系统静态电压稳定裕度值作比较,结果表明所提新方法能够快速、准确地提高电力系统静态电压稳定性。In order to improve stability of static voltage of the power system,it is proposed to combine static var compensator（ SVC） with thyristor controlled series compensator（ TCSC） in power system lines and use dynamic continuous trend method for calculating static voltage stability margin of the power system. Firstly,steady state model for SVC and TCSC is constructed,concepts of node parameter factor and branch parameter factor are introduced and modal analysis method is used to determine vulnerabilities of system busbar and branches. In addition,parallel SVC is adopted for reactive power compensation for weak spots of busbar,series TCSC is used for optimizing power distribution of weak lines and dynamic continuous trend method is applied to work out static voltage stability margin. IEEE-14 node system is used for simulating calculation,and static voltage stability margin values of device without flexible alternative current transmission system（ FACTS）,single installation of SVC or TCSC,combined installation of SVC and TCSC are compared. Results indicate the proposed new method is able to quickly and correctly improve static voltage stability of the power system.

关 键 词：灵活交流输电 静止无功补偿器 可控串联补偿装置 静态电压稳定裕度 动态连续潮流法 模态分析法 

分 类 号：TM712.2[电气工程—电力系统及自动化]