DSTATCOM用于改善电压质量的运行模式研究  

Study on operation mode of DSTATCOM used for improvement voltage quality

作　　者：王跃球[1] 唐杰[1] 

机构地区：[1]邵阳学院信息与电气工程系

出　　处：《微计算机信息》2007年第05Z期307-309,共3页Control & Automation

基　　金：湖南省教育厅资助科研项目(06C603)

摘　　要：介绍了一种用于改善中低压配电网电压质量的新型静止无功发生器(DSTATCOM),其主电路采用基于VSI-SPWM结构的电压型逆变器,指令电流的运算和补偿电流的控制均采用同步旋转参考坐标系。重点论述了DSTATCOM用于抑制电压跌落和电压闪变两种常见的电压质量问题。根据无功指令电流形成的不同方法,DSTATCOM有恒功率因数和恒电压两种运行模式。在两种运行模式下对DSTATCOM抑制电压跌落和电压闪变进行了仿真研究,仿真结果表明,恒功率因数模式适合于抑制电压闪变,而恒电压模式适合于抑制电压跌落。A type of static reactive power compensator （DSTATCOM） used for improvement of voltage quality in low-medium distribu- tion network is introduced. The main circuit of DSTATCOM consists of VSI-SPWM voltage source inverter. The extraction of reference current and the tracking control of compensator current are realized in synchronous reference frame. The function of DSTATCOM to mitigate voltage sag and flicker is presented in this paper and the operation mode of DSTATCOM is discussed in detail. The func- tion of DSTATCOM to mitigate voltage sag and flicker under different operation mode is simulated with MATLAB. The simulation results shows that the constant power factor operation mode is suitable for mitigating voltage flicker and the constant voltage operation mode is suitable for mitigating voltage sag.

关 键 词：配电静止无功发生器 电压跌落 电压闪变 运行模式 

分 类 号：TP217[自动化与计算机技术—检测技术与自动化装置]