级联STATCOM的直流侧电容电压平衡控制  

DC Capacitor Voltage Balancing Control for Cascaded STATCOM

作　　者：李圣清[1] 徐文祥[1] 栗伟周[1] 曾欢悦[1] 

机构地区：[1]湖南工业大学,电气与信息工程学院,湖南株洲412008

出　　处：《电力电子技术》2013年第4期27-29,共3页Power Electronics

基　　金：国家自然科学基金资助项目(51077046);湖南省重点建设学科项目(201176)~~

摘　　要：针对级联静止同步补偿器(STATCOM)直流侧电容电压不平衡问题,通过分析级联STATCOM静止坐标下的单相数学模型,基于解耦变换将有功和无功解耦分离,提出通过总体控制和有功电压平均分配控制来平衡其直流侧电容电压,利用主从控制的思想实现控制要求。主控制器算出级联STATCOM每相交流侧所需总的有功、无功电压及电网电压相位等信息,同时实现对直流侧电容电压的总体控制,从控制器通过对每个级联模块单独控制实现对每个模块进行有功电压平均分配控制。仿真和实验结果表明了该方法的可行性和有效性。Aiming at the DC side capacitor voltage unbalancing problem of cascaded static synchronous compensator （STATCOM）, through the analysis of cascaded STATCOM under stationary coordinates phase mathematical model, de- coupling separation of the active and reactive based on the decoupling transformation, a theory of whole control and active voltage average distribution to balance DC capacitor voltage is put through using master slave control to realize con- trolling requirements.The main controller calculates each phase AC side of required total active and reactive voltage and grid voltage phase information etc., and realizes the whole control of DC side capacitor voltage at the same time. The slave controller completes each cascade module for active voltage average distribution control by each module in dividually control.The simulation and experimental results show that the method is feasible and effective.

关 键 词：补偿器 有功电压 平均分配 主从控制 

分 类 号：TM715[电气工程—电力系统及自动化]