动态电压恢复器的能量稳定补偿特性分析  

Characteristics Analysis on Energy Steady Compensation for Dynamic Voltage Restorer

作　　者：刘颖英[1] 肖湘宁[1] 徐永海[1] 

机构地区：[1]华北电力大学电气与电子工程学院,北京市昌平区102206

出　　处：《中国电机工程学报》2010年第13期69-74,共6页Proceedings of the CSEE

基　　金："十一五"国家科技支撑计划重大项目(2007BAA12B03)~~

摘　　要：对补偿电压约束条件下动态电压恢复器(dynamic voltage restorer,DVR)的能量稳定补偿策略及其补偿特性进行分析。首先提出考虑装置补偿电压约束时DVR能量稳定补偿策略,并给出装置输出电压分别小于及达到极限补偿电压时补偿策略的详细解析式;然后根据解析式分析得到能量稳定补偿策略的补偿效果直接受到电压暂降(暂升)幅值、负荷功率因数及装置极限补偿电压3方面因素影响的结论;最后对3种影响因素对补偿策略效果的影响特性进行理论与数值分析,并给出其影响特性曲线。这些分析结果将有助于DVR补偿策略的设计及工程实践。The energy steady compensation strategies and characteristics analysis for dynamic voltage restorer （DVR） under the equipment＇s restriction of compensation voltage were considered. First an energy steady compensation strategy for DVR with the consideration of the restriction of compensation voltage was proposed. The detailed expressions of the strategy when the output voltage was under or on the restriction voltage were given. Then with analysis of the expressions, it could be concluded that the effects of the compensation strategy were influenced by three factors that are the magnitude of the system voltage sag （or swell）, the power factor of load and the limitation value of the compensation voltage. Last, the influence characteristics of the three factors had been analyzed in both theoretical and mathematical ways, and the curves of influence characteristics had been given. The analysis results will be helpful to compensation strategy design and engineering practice.

关 键 词：动态电压恢复器 能量稳定 补偿策略 补偿电压约束 补偿特性 

分 类 号：TM71[电气工程—电力系统及自动化]