中压大容量DVR的拓扑结构及其控制方法研究  

Research on Topology of Medium-voltage Large-capacity DVR and Its Control Method

作　　者：李旷 左强 

机构地区：[1]辽宁荣信电力电子股份有限公司,辽宁沈阳110000

出　　处：《四川电力技术》2006年第B12期38-42,61,共6页Sichuan Electric Power Technology

摘　　要：介绍了动态电压恢复器的电路拓扑和基本原理以及DVR的发展趋势,提出了中压大容量条件下动态电压恢复器的一种切实可行的电路结构。在此基础上,提出了基于瞬时无功功率理论的DVR软锁相方法和改进的DVR反馈控制方法。进行了系统的仿真研究。对DVR补偿单元进行了实验。仿真和实验结果均验证了软锁相方法是有效的,DVR的补偿效果也是令人满意的。The circuit topology and basic principles of dynamic voltage restorer （DVR） are introduced, and in the light of its develop- ment, a feasible structure of the circuit on the medium - voltage large - capacity dynamic voltage restorer is put forward. On this basis, DVR soft lock method based on the instantaneous reactive power theory and the improved DVR soft lock- feedback control method are proposed. By Matlab simulation software and the experiment on the DVR compensation units, it＇s confirmed that the method is effective and satisfactory.

关 键 词：动态电压恢复器 电压跌落 软锁相 

分 类 号：TM761[电气工程—电力系统及自动化]