基于瞬时无功理论的SVC无功电流检测方法  

A Method of Reactive Current Signal Detection for SVC Control System based on the Instantaneous Reactive Power Theory

作　　者：李鑫[1] 曾光[1] 苏彦民[2] 张静刚[1] 

机构地区：[1]西安理工大学,陕西西安710048 [2]西安交通大学,陕西西安710049

出　　处：《电力电子技术》2006年第5期121-123,共3页Power Electronics

摘　　要：讨论了静止型无功补偿器(SVC)在电流突变情况下的无功电流检测方法。论述了利用瞬时无功功率理论从三相不对称电流中正确检测出三相正序有功电流,并用计算出的指令电流对系统进行补偿的原理。对补偿系统进行了仿真,并依靠工控机实验平台对实际不平衡系统加以补偿。结果表明,该方法能够达到补偿无功和平衡电流的目的,并且这是一种快速、有效、准确的检测方法,具有较好的工程应用价值。A method of reactive current signal detection for static var compensator（SVC） control under unsymmetrical currents with distortions is described in this paper.Based on the instantaneous reactive power theory the method correctly detects the active positive-ord current from unsymmetrical currents and applies calculated command current to compensate system.The compensation system was simulated in simulink environment of matlab software,and an actual unbalancing system was compensated on an experimental plateform with micro-controller.The result shows that this method can achieve the aim of compensating and balancing the reactive current.And It is very effective, accurate,and with fast response performance.

关 键 词：补偿器 滤波器 锁相环/瞬时无功功率理论 

分 类 号：TM721.1[电气工程—电力系统及自动化]