作者：李丽

作者单位：西南科技大学信息与控制工程学院, 四川绵阳 621000

关键词：三阶非线性动态模型; 电压稳定; SVC系统; 非线性控制

摘要：

本文对由晶闸管控制电抗器(TCR)型装置与一个固定电容器组(FC)型装置组成的静止无功补偿系统(SVC)建立了一个三阶非线性动态模型。并对该模型应用直接反馈线性化理论(DEF)提出了一种新的SVC的非线性控制策略。用MATLAB软件对输电线路上装设SVC的三母线系统进行仿真,结果表明了该控制策略在增强电压稳定性方面具有良好的效果。

A nonlinear control strategy design for SVC to improve power system voltage stability

LI Li

School of Information and Control Engineering, Southwest University of Science and Technology, 621000, China

Abstract: This paper discusses a nonlinear design for TCR-FC Static Var Compensator (SVC)to improve power system voltage stability.A third order nonlinear dynamical model for the SVC system is the developed.Direct feedback linearization (DEF) technique is employed to design a nonlinear control strategy.The effectiveness of the control strategy on voltage stability enhance is studied on a three-bus power sy stem through time simulation.The result shows that the proposed control strategy is effective in voltage stability enhancement.

Keywords: Third order nonlinear dynamical model; Voltage stability; SVC sy stem; Nonlinear control

2005, 31(2): 21-23  收稿日期: 2004-7-6;收到修改稿日期: 2004-9-13

基金项目: 

作者简介: 李丽(1968-),女,讲师,主要从事电能质量及稳定与控制分析研究。

参考文献

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