考虑异步电动机的动态电压稳定特征值指标  

Dynamic Voltage Stability Eigenvalue Index Considering Asynchronous Motors

作　　者：井艳清[1] 李兴源[1] 吴华坚[1] 顾威[1] 郭晓鸣[1] 陈虎[1] 周健[2] 

机构地区：[1]四川大学电气信息学院,成都610065 [2]华能小湾水电厂,南涧675702

出　　处：《电力系统及其自动化学报》2012年第1期14-18,共5页Proceedings of the CSU-EPSA

基　　金：国家科技支撑计划项目(2008BAA13B01);国家自然科学基金重点项目(51037003)

摘　　要：为更加精确、快速地判断系统动态电压稳定性,提出了系统动态电压稳定的特征值指标IDVSE(dynamic voltage stability eigenvalue index),并计及异步电动机负荷三阶机电暂态模型,对异步电动机负荷进行暂态等效和特征值分析,进而判断系统动态电压稳定性。该指标克服了动态电压稳定指标的不精确性和计算量大等问题。BPA软件对IEEE30系统的时域仿真结果验证了该指标的有效性和准确性。In order to determine the system dynamic voltage stability more accurately and quickly,a system dynamic voltage stability index is proposed.Considering third-order transient model of asynchronous motor load and on the base of the transient equivalent of the asynchronous motor load,the eigenvalue of asynchronous motor load is analyzed in order to determine the system dynamic voltage stability.The index overcomes the shortages of the past indexes,such as imprecision and large computation.The time domain simulation results on IEEE30 system by using BPA verify the validity and accuracy of the index.

关 键 词：动态电压稳定 异步电动机 特征值 指标 时域仿真 

分 类 号：TM744[电气工程—电力系统及自动化] TM743