三相三线动态电压恢复器最优控制策略  

Optimal control of three-phase three-wire dynamic voltage restorer

作　　者：周卫平[1] 师维[1] 王智勇 吴正国[1] 孙东亮[1] 

机构地区：[1]海军工程大学电气工程学院,湖北武汉430033 [2]浙江杭申电气集团有限公司,浙江杭州311234

出　　处：《电力自动化设备》2014年第1期91-95,共5页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51207164)~~

摘　　要：分析简化了线电压补偿型三相三线动态电压恢复器(DVR)的拓扑结构,提出了基于控制方程最优解的DVR最优化控制方法。基于数字锁相的方法检测得到补偿电压,分析推导了DVR电压控制的时域电路方程,求得了电压控制方程在最优化指标下的最优解。该方法基于DVR输出的线电压计算开关时间,减少了计算和转换环节,提高了直流侧电压的利用率和DVR的补偿能力。仿真和实验结果证明了所提控制方法的正确性和可行性。The topological structure of three-phase three-wire DVR（Dynamic Voltage Restorer） is simplified and analyzed,and its optimal control based on the optimal solution of control equation is proposed. The compensation voltage is detected by the digital phase lock,the time-domain voltage control equation of DVR is deduced by analysis and its optimal solution under the optimization index is calculated. The switching time is calculated by the output line voltages of DVR to simplify the calculation and conversion for improving the utilization rate of DC side voltage and the compensation capability of DVR. Simulative and experimental results verify the validity and feasibility of the proposed control algorithm.

关 键 词：动态电压恢复器 电压暂降 最优化控制 最优解 电压控制 补偿 

分 类 号：TM761[电气工程—电力系统及自动化]