带变压器的链式SVG控制策略研究  

Research on Control Strategy on Chain SVG with Transformer

作　　者：庞成成 魏幼平[1] 

机构地区：[1]中国矿业大学(北京),机电与信息工程学院,北京100083

出　　处：《电力电子技术》2016年第2期34-36,共3页Power Electronics

摘　　要：为提高电力系统的安全运行水平和电能质量,链式SVG已成为交流输电系统中广泛应用的无功补偿设备。分析了带变压器的链式SVG的拓扑结构,在d,q旋转坐标系下对其控制策略进行了研究。电流控制策略采用d,q旋转坐标系下的前馈解耦控制。为解决链式SVG的直流侧电压稳定和不平衡问题,提出直流电压的分级控制策略。最后应用Matlab进行了系统仿真和实验,验证了该控制策略具有良好的动态响应和静态补偿效果。In order to improve the level of safe operation and power quality in power system,chain SVG has become a reactive power compensation equipment which is used in AC transmission system.This paper analyzes the topology of the chain circuit SVG with transformer,and studies the control strategy on the basis of d,q rotating coordinate system.The current control strategy adopts feedforward decoupling control under d,q rotating reference frame.In order to solve the stability and imbalance problems of DC voltage on chain circuit SVG,the hierarchical control strategy of DC voltage is proposed.Finally,the control strategy that has good dynamic response and static compensation effect is verified by the experiment and system simulation.

关 键 词：静止无功发生器 电能质量 变压器 控制策略 

分 类 号：TN782[电子电信—电路与系统]