基于预测电流控制的四桥臂SVG研究  

Study on Four-bridge SVG Based on Predictive Current Control

作　　者：王立靖[1] 宣科[1] 栗大维[1] 王赫鸣[1] 赵鹏[1] 

机构地区：[1]国网黑龙江省电力有限公司哈尔滨供电公司,黑龙江哈尔滨150000

出　　处：《电力电容器与无功补偿》2017年第1期50-54,共5页Power Capacitor & Reactive Power Compensation

摘　　要：文章针对低压系统中三相三线制静止无功发生器SVG(static var generator)无法实现零序电流补偿的情况,设计了一种四桥臂逆变器SVG主电路,采用改进的无功电流检测方法对含零序分量的电流进行检测,并采用预测电流控制策略对SVG进行控制,使其有效地对系统中的不平衡零序电流进行补偿。通过在Simulink环境下搭建的两电平四桥臂SVG仿真分析表明,本文中的控制方法可以有效地对负载不平衡系统进行无功补偿。In view of the situation that no zero sequence current compensation is achieved by three-phase three-wire SVG（static var generator）in low voltage system,a kind of main circuit of four-bridge inverter SVG is designed,the current containing zero sequence component is detected by the improved reactive power current detection method,the SVC is controlled by the use of predictive current control strategy so to compensate effectively unbalance zero sequence current in the system. It is shown by the two level four-bridge SVG simulation and analysis which is set up at Simulink that the control method in the paper can perform reactive compensation effectively to the unbalance system of load.

关 键 词：零序电流补偿 四桥臂SVG 无功电流检测 预测电流控制 

分 类 号：TM761[电气工程—电力系统及自动化]