基于间接电流控制方法下系统稳定性的静止无功发生器参数设计

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摘要基于间接电流控制方法的小信号动态模型, 提出一种应用相位裕量设计静止无功发生器(STATCOM)连接电抗器和直流侧电容参数的方法。本文分别建立两种间接电流控制方法(相位控制方法, 相位和幅值控制方法)的小信号动态模型, 在相位控制方法中利用零极点分布特征得出连接电抗器和直流侧电容的设计关系, 在相位和幅值控制方法中, 利用传递函数和基于伯德图的频域分析方法定性分析了系统各参数对电流环和电压环稳定性的影响, 在此基础上忽略对稳定性影响小的参数, 简化包含系统各参数的相位裕量表达式, 给出基于相位裕量的连接电抗器和直流侧电容的设计方法。最后, 仿真和实验表明了动态模型和参数设计方法的正确性。

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	赵国鹏
	韩民晓
	刘进军

关键词 ：静止无功发生器, 间接电流控制, 连接电抗器, 直流侧电容

Abstract：Based on the small-signal dynamic model of the indirect current control, a design method of the interface inductor and the DC side capacitor of static synchronous compensator (STATCOM) is proposed. The design method bases on the system stability. This paper presents the models of two types of indirect current control (phase-shift control, phase and amplitude control). In the phase-shift control, the design relationship of the interface inductor and the DC side capacitor is obtained by using the pole-zero map. In the phase and amplitude control, an analysis of the influences of parameters on the current control loop and the voltage control loop is obtained by using the transfer functions and the bode diagrams. The parameters which have a small influence on the system stability are ignored. The equation of the phase margin is simplified. Then, this paper proposes the design methods of the interface inductor and the DC side capacitor. Finally, simulation and experimental results verify the above dynamic model and the design methods.

Key words： Static synchronous compensator indirect current control interface inductor DC side capacitor

收稿日期: 2010-08-19 出版日期: 2014-03-20

PACS:

TM714

基金资助:中央高校基本科研业务费专项资金资助项目(12MS28)。

作者简介: 赵国鹏男, 1980年生, 博士, 讲师, 主要研究方向为电力电子技术在电力系统中的应用。韩民晓男, 1963年生, 教授, 博士生导师, 主要研究方向为电力电子技术在电力系统中的应用。

引用本文:

赵国鹏, 韩民晓, 刘进军. 基于间接电流控制方法下系统稳定性的静止无功发生器参数设计[J]. 电工技术学报, 2012, 27(9): 17-24. Zhao Guopeng, Han Minxiao, Liu Jinjun. Design of Parameters in Static Synchronous Compensator with Indirect Current Control Based on the System Stability. Transactions of China Electrotechnical Society, 2012, 27(9): 17-24.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2012/V27/I9/17

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