基于功率电流变化关系的电压失稳判别方法  

Voltage Instability Criterion Based on Variation Relationship of Power and Current

作　　者：汤涌[1] 易俊[1] 孙华东[1] 林伟芳[1] 张鑫[1] 仲悟之[1] 邵瑶[1] 

机构地区：[1]中国电力科学研究院,北京市海淀区100192

出　　处：《中国电机工程学报》2010年第28期7-11,共5页Proceedings of the CSEE

基　　金：国家重点基础研究发展计划项目(973项目)(2004CB217901)~~

摘　　要：在对电压失稳的机制和电压崩溃的过程进行分析后,提出一种判断电力系统发生扰动后的暂态及中长期过程中电压是否失稳的方法。该方法基于扰动发生后部分母线处功率电流的变化关系来判别暂态及中长期电压稳定性,需要监测的电气量少,可方便地应用于送受端间由输电通道连接的受端系统的电压稳定判别,具有适用性强、使用简单及计算量小的特点。仿真算例表明,该方法可准确地判别电压失稳。After analysis of voltage instability mechanism and the course of voltage collapse, a criterion of transient and long-term voltage instability was presented. The criterion is based on variation relationship of power and current, and criterion judgment only needs to monitor several electrical variables to evaruate the voltage stability of the receiving system connecting with the sending system by several transmission lines, Moreover, the criterion has characteristics of strong adaptability, convenience and low computational complexity. Several simulation examples show that the criterion is effective.

关 键 词：电力系统 暂态电压稳定:中长期电压稳定:电压 失稳判据 输电通道 

分 类 号：TM71[电气工程—电力系统及自动化]