Online estimation and application of power grid impedance matrices based on synchronised phasor measurements

被引：25
|
作者：
Yang, J. [1 ,2 ]
Li, W. [2 ]
Chen, T. [2 ]
Xu, W. [2 ]
Wu, M. [1 ]
机构：
[1] Cent S Univ, Sch Informat Sci & Engn, Changsha 410083, Hunan, Peoples R China
[2] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 2V4, Canada
来源：
IET GENERATION TRANSMISSION & DISTRIBUTION | 2010年 / 4卷 / 09期
基金：
加拿大自然科学与工程研究理事会;
关键词：
VOLTAGE-STABILITY; SYSTEM; PROTECTION;
D O I：
10.1049/iet-gtd.2010.0021
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：
Grid impedance matrices estimation is important in monitoring and protection of wide-area power systems. In this study, a recursive least-squares estimation algorithm with a forgetting factor is presented to identify impedance parameters of power grids. This approach is based on synchronised phasor measurements and makes it possible to track changing parameters. The algorithm is tested on two power systems using MATPOWER-generated data, and case studies are conducted for estimation of grid impedances followed by voltage stability margin analysis and fault detection. The results show that the proposed method is effective for online estimation of grid impedances, fault detection and voltage stability monitoring.
引用
收藏
页码：1052 / 1059
页数：8
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