电力系统及其自动化学报2017，Vol.29Issue(9)：42-47,6.DOI:10.3969/j.issn.1003-8930.2017.09.007
适用于中高压配电网的MMC-SST型电能质量综合治理方法
MMC-SST Type Comprehensive Power Quality Management Method for the Medium-and High-voltage Distribution Network
摘要
Abstract
A modular multilevel converter based solid state transformer(MMC-SST)is proposed,and it is applied to comprehensively manage the power quality in medium-and high-voltage distribution network. Firstly,the topology and operation characteristics of MMC-SST are analyzed. Secondly,the control strategies at the input,isolation and output stages are designed,separately. Finally,a simulation model of this system is established by using Matlab/Simulink . The results show that in the typical cases including transient and unbalanced voltage on grid side,load changes and har?monic pollution,the proposed system has the ability to maintain the stability of DC and AC voltages and to operate with the unity power factor on the input side.Besides,the features such as fast voltage and current response,as well as the robustness to load variation,can also be maintained,which can effectively solve the power quality problems in the me?dium-and high-voltage distribution network.关键词
模块化多电平变流器/固态变压器/控制策略/电能质量/配电网Key words
modular multilevel converter(MMC)/solid state transformer(SST)/control strategy/power quality/dis⁃tribution network分类
信息技术与安全科学引用本文复制引用
韩继业,李勇,段义隆,罗隆福,曹一家..适用于中高压配电网的MMC-SST型电能质量综合治理方法[J].电力系统及其自动化学报,2017,29(9):42-47,6.基金项目
国家自然科学基金资助项目(51377001,61233008) （51377001,61233008）
科技部国际合作资助项目(2015DFR70850) （2015DFR70850）
