重庆电网多种负荷模型对系统稳定性影响机理  

Voltage stability research for different load models on Chongqing power system

作　　者：张鑫[1] 马世英[1] 孙华东[1] 

机构地区：[1]中国电力科学研究院系统所,北京100192

出　　处：《中国电力》2010年第1期15-19,共5页Electric Power

基　　金：国家重点基础研究发展计划(973计划)资助项目(2004CB217901);国家电网公司科技资助项目(SGKJ[2007]1063)

摘　　要：负荷特性是电压失稳过程中最活跃、最关键的因素,对于电压稳定研究具有重要意义。通过典型故障后电压恢复特性比较分析,研究了负荷特性和组成比例对系统故障后电压恢复特性的影响;通过计算典型故障极限切除时间,分析了负荷特性和组成比例对重庆电网系统稳定性的影响。经过计算可以得到,针对重庆电网的异步电动机负荷比静态负荷模型更有利于系统电压稳定。Load characteristics is the most important factor in voltage stability research. The effect of load characteristic and composition proportion on voltage recovery was studied by comparing voltage recovery characteristics after typical fault. The effect of load characteristics and composition proportion on system stability was also studied by calculating critical clearing time after typical fault. Tbe calculation results show that asynchronous motor load models are more conducive to system voltage stability than static load models for Chongqing Power Grid.

关 键 词：负荷模型 电压稳定 电压恢复特性 极限切除时间 

分 类 号：TM712[电气工程—电力系统及自动化]