Optimal configuration of modular redundancy for MMC

作者：Wang Baoa · 发表于：Dianli zidonghua shebei · 年份：2015 · 被引用次数：9 · 研究领域：High-Voltage Power Transmission Systems、HVDC Systems and Fault Protection、Power Systems and Technologies

A method of optimal configuration for modular redundancy of MMC(Modular Multilevel Converter)is proposed,which establishes a multi-objective optimization function and obtains the optimal quantity of redundant sub-module to increase its utilization rate and enhance system reliability. The topological structure of MMC and the operation mechanism of its sub-module are analyzed. The protection schemes of study of module redundancy are studied and the specific steps of its optimal configuration are given,which are analyzed for engineering application. Simulative results show that,the optimal redundant sub-module configuration is simply and effectively obtained,which ensures the reliable system operation while reduces the costs,verifying the validity and feasibility of the proposed method.