On-line voltage stability monitoring

被引:24
作者
de Souza, AC [1 ]
de Souza, JC
da Silva, AM
机构
[1] Fed Univ Itajuba, EFEI, Itajuba, MG, Brazil
[2] Univ Fed Fluminense, Dept Elect Engn, BR-24220000 Niteroi, RJ, Brazil
关键词
forecasting-aided state estimation; power system monitoring; tangent vector; voltage collapse;
D O I
10.1109/59.898105
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper presents a new methodology for online voltage stability assessment, consisting of two steps. Firstly, the time evolution of the power system operating state is modeled with the help of a forecasting-aided state estimator; secondly the voltage collapse point is determined through an extrapolation technique based on tangent vector behavior. Tests are carried out using the IEEE-14 bus system, where different operating scenarios are considered. The results show that monitoring system load trends may improve the assessment of voltage stability.
引用
收藏
页码:1300 / 1305
页数:6
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