Power system damping from energy function analysis implemented by voltage-source-converter stations

被引：9

作者：

Ruan, Si-Ye ^{[1
]}

Li, Guo-Jie ^{[1
]}

Ooi, Boon-Teck ^{[2
]}

Sun, Yuan-Zhang ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Elect Engn, State Key Lab Power Syst, Beijing 100084, Peoples R China

[2] McGill Univ, Dept Elect & Comp Engn, Montreal, PQ H3A 2A7, Canada

来源：

ELECTRIC POWER SYSTEMS RESEARCH | 2008年 / 78卷 / 08期

基金：

中国国家自然科学基金;

关键词：

VSC; real and reactive power modulations; energy function;

D O I：

10.1016/j.epsr.2007.12.003

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：

Because weakly damped system oscillations can endanger the secure operation of power systems, this paper is a study on how damping can be increased. As the power system is nonlinear, an energy function approach, patterned after the direct method of Lyapunov function, is used in the analysis. The analysis develops an energy function W and shows that a real power term (proportional to local frequency) and/or a reactive power term (proportional to the line voltage differentiated with respect to time) increase the rate of diminution of the energy function W. This implies effective damping of power swings by such power signals and is verified by simulations of a multi-machine system model. The damping signals are introduced by voltage-source-converter (VSC) stations. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1353 / 1360

页数：8

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