基于CS-MMC的静止同步无功补偿装置控制策略  

STATCOM System Based on CS-MMC Control Strategy

作　　者：胡勇 沈道义 李茂亮[2] 金鹏[2] 

机构地区：[1]上海格鲁布信息科技有限公司,上海201216 [2]国网辽宁省电力有限公司沈阳供电公司,辽宁沈阳110811

出　　处：《电力电子技术》2017年第4期54-56,60,共4页Power Electronics

基　　金：国家电网公司科技项目(SGLNSY00FZJS1500091)~~

摘　　要：电流源型模块化多电平变流器(CS-MMC)具有高度模块化、母线短路容错运行能力、易于直接电流控制等特点,是静止同步无功补偿器(STATCOM)系统的理想解决方案。为解决传统MMC-STATCOM系统母线短路故障零容忍和间接电流控制等问题,提出一种CS-MMC-STATCOM解决方案,并针对CS-MMC自身特性,提出了一种CS-MMC直接电流控制和子模块满意电流均衡控制方法。以建立CS-MMC数学模型为出发点,分析CSMMC桥臂能量交换过程及内部环流分量,在线优化并拾取最优子模块投切状态,满足子模块电感电流均衡和跟踪系统输出无功控制需求。最后,实验验证了所提控制方法的可行性和有效性。With the characters of highly modular, bus short-circuit fault tolerant operation ability and direct current control, current source-modular multilevel converter（CS-MMC） becomes the ideal solution of static synchronous com- pensator（STATCOM）.In order to solve the problems of traditional MMC-STATCOM system, such as bus short-circuit fault tolerance and indirect current control,the CS-MMC-STATCOM solution is proposed,focused on the features of the CS-MMC direct current control and sub module current balance control method.Take the CS-MMC mathematical model as a starting point, CS-MMC bridge arm energy exchange process and internal circulation component are analyzed ,online optimize and pick up the optimal sub module switching state to meet the demand for reactive power control,sub module inductor current balancing and tracking system output.Finally,the feasibility and effectiveness of the proposed control method are verified by experiments.

关 键 词：模块化多电平变流器 静止同步无功补偿器 电流均衡控制 

分 类 号：TM46[电气工程—电器]