串联电压凹陷补偿的不同策略分析  

Analysis of Different Strategies for Series Voltage Sag Compensation

作　　者：李丽[1] 杨洪耕[1] 刘冀春[2] 

机构地区：[1]四川大学电气信息学院,四川成都610065 [2]四川电力试验研究院,四川成都610072

出　　处：《四川电力技术》2005年第4期29-31,55,共4页Sichuan Electric Power Technology

摘　　要：动态电压恢复器DVR(DynamicVoltageRestorer)串联于电网络,用来保护敏感负荷免受电压波动尤其是电压凹陷的影响。讨论了动态电压恢复器的常见在线检测方法和相应的实时补偿策略,并结合负荷特性进行综合比较。目的是分析其对补偿设备,特别是储能系统容量和逆变器设计等级的影响。实际应用中,补偿策略的选择应综合考虑敏感负荷对电压恢复的要求以及动态电压恢复器的经济性能等因素。A Dynamic Voltage Restorer （DVR） is connected in series with the power grid. The main function of DVR is to protect sensitive load from the influence of voltage fluctuation, especially voltage sag. The main online detection methods and various DVR control strategies are discussed, and a general comparison is carried out combined with load characteristic. The purpose is to analyze the influence of the chosen strategies on compensative device such as the energy storage capacity and the inverter rating. In actual application, the demands of sensitive load to voltage restoration and economic performance of DVR should be considered for the selectionof compensation strategy.

关 键 词：动态电压恢复器 电压凹陷 敏感负荷 脉宽调制逆变器 对称分量 

分 类 号：TM712[电气工程—电力系统及自动化]