配电网中MMC-STATCOM综合补偿控制  

Comprehensive compensation control of MMC-STATCOM in distribution network

作　　者：刘凯靖 常鲜戎[1] 郭学成[1] 娄晓琪[1] 郑焕坤[1] 

机构地区：[1]华北电力大学,河北保定071003

出　　处：《电测与仪表》2017年第12期71-76,82,共7页Electrical Measurement & Instrumentation

摘　　要：针对传统配电网静止同步补偿器补偿容量小、冲击电流大等问题,本文提出基于模块化多电平逆变器的三相四线制配电网静止同步补偿器(D-STATCOM)。首先分析了MMC-DSTATCOM的拓扑结构和等效模型,叠加有功电流平衡直流侧电压和根据充放电关系保证子模块电压,同时考虑环流抑制,叠加二倍频电压消除环流影响,得出了利用载波移相技术实现等效输出端电压输出,从而实现对配电网的综合补偿效果,最后利用Matlab/Simuilink环境中搭建模型进行仿真分析,证实所提方法的有效性和可行性。In view of the problem that the traditional distribution static synchronous compensator compensation capaci- ty is small, while impact current is big, the modular multilevel inverter three phase four wire system distribution static synchronous compensator （DSTATCOM） based was proposed in this paper. Firstly, this paper analyzes the topology structure and the equivalent model of MMC-DSTATCOM, superposition of DC side voltage active current balance and according to the relationship between charge and discharge to ensure child module voltage. At the same time, it also considers circulation inhibition, double frequency voltage to eliminate circulation effect, it is concluded that the volt- age output of equivalent output is achieved by using carrier phase shift technique, so as to realize the comprehensive compensation effect of power distribution network. Finally, to the model is built in Matlab/Simuilink for the simulation analysis, which confirms the feasibility and effectiveness of the proposed method.

关 键 词：配电网静止同步补偿器 模块化多电平 环流抑制 载波移相技术 

分 类 号：TM92[电气工程—电力电子与电力传动]