基于局部电压稳定指标的裕度灵敏度分析及应用  

Sensitivity analysis based on local voltage stability margin and its application

作　　者：李国庆[1] 姜涛[2] 徐秋蒙[3] 陈厚合[1] 贾宏杰[2] 

机构地区：[1]东北电力大学电气工程学院,吉林吉林132012 [2]天津大学智能电网教育部重点实验室,天津300072 [3]华中科技大学电气与电子工程学院,湖北武汉430074

出　　处：《电力自动化设备》2012年第4期1-5,30,共6页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(50977009)~~

摘　　要：提出一种基于局部电压稳定指标的裕度灵敏度分析新方法。以局部电压稳定指标为基础推导出负荷节点电压稳定裕度,该裕度具有确定的上、下界,且不受负荷增长方式影响;利用负荷节点电压稳定裕度有效识别了系统电压弱节点和弱节点集合;定义局部电压稳定指标的裕度灵敏度,确定与弱节点集合强相关的负荷节点,分析弱节点集合邻域节点无功波动对弱节点集合电压影响程度;最后将所提方法应用于系统无功补偿装置配置中,典型系统的仿真结果证明了所提方法的可行性和有效性。A method of margin sensitivity analysis for local voltage stability index is presented. The voltage stability margin of load node is deduced based on local voltage stability index to identify VWN （Voltage Weak Node） and VWNS（Vohage Weak Node Set）,whieh has fixed upper and lower bounds,not affected by the mode of load growth. The margin sensitivity of local voltage stability index is defined to determine the load nodes,which are strongly correlating with the VWNS,and the effect of their reactive power fluctuation on the voltage of VWNS is analyzed. The introduced method is applied to the reactive power compensation device and the simulative results for the IEEE 14-bus test system show its feasibility and effectiveness.

关 键 词：电压控制 稳定性 局部电压稳定指标 电压稳定裕度 灵敏度分析 

分 类 号：TM712.2[电气工程—电力系统及自动化]