Lyapunov-Krasovskii functional based power system stability analysis in environment of WAMS

被引：7
|
作者：
Li Ting [1 ]
Wu Min [1 ]
He Yong [1 ]
机构：
[1] Cent S Univ, Sch Informat Sci & Engn, Changsha 410083, Hunan, Peoples R China
来源：
JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 2010年 / 17卷 / 04期
基金：
中国国家自然科学基金;
关键词：
power system; steady state stability; time-varying delay; power system stabilizer; SMALL-SIGNAL STABILITY; EIGENVALUES; ENHANCEMENT;
D O I：
10.1007/s11771-010-0559-4
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
In order to analyze power system stability in environment of WAMS (wide area measurement system), a new steady state stability model with time-varying delay was proposed for power system. The factors of exciter and power system stabilizer with delay were introduced into analytical model. To decrease conservativeness of stability analysis, an improved Lyapunov-Krasovskii functional was constructed, and then a new delay-dependent steady state stability criterion for power system, which overcomes the disadvantages of eigenvalue computation method, was derived. The proposed model and criterion were tested on synchronousmachine infinite-bus power system. The test results demonstrate that Lyapunov-Krasovskii functional based power system stability analysis method is applicable and effective in the analysis of time delay power system stability.
引用
收藏
页码：801 / 806
页数：6
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