混合MMC等微增率子模块冗余配置方法  

Equal Incremental Principle Based Sub-module Redundancy Configuration of Hybrid MMC

作　　者：许建中[1] 王乐[1] 井皓 武董一 赵成勇[1] XU Jianzhong;WANG Le;JING Hao;WU Dongyi;ZHAO Chengyong(State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources（North China Electric Power University）,Changping District,Beijing 102206,China)

机构地区：[1]新能源电力系统国家重点实验室(华北电力大学)

出　　处：《中国电机工程学报》2018年第19期5804-5811,共8页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51607065)~~

摘　　要：模块化多电平换流器（modular multilevel converter,MMC）子模块冗余配置方法需考虑系统可靠性与经济性等多个因素。该文针对在高压直流输电领域具有较好应用前景的半全混合MMC,提出一种等微增率子模块冗余配置方法。首先,给出基于古典概型的半、全桥子模块与混合MMC可靠性模型。其次,在半全混合MMC可靠性计算的基础上,分别讨论在子模块成本和可靠性两种约束条件下的冗余子模块的配置方案。结果显示,按照相等的微增率原则配置冗余子模块,可实现换流器可靠性最高和冗余子模块成本最低的目标。最后,在Matlab中计算验证所提出的等微增率子模块冗余配置方法的有效性。The sub-module （SM） redundancy configuration of modular multilevel converter （MMC） should overall consider the practical factors such as system reliability and efficiency. The hybrid MMC is one of the potential candidates in future HVDC systems, this paper proposed the optimal strategy of SM redundancy configuration of half-and full-bridge hybrid MMC. Firstly, the classical functions of probability based reliability models of single SMs and hybrid MMC were provided as a basis. Then the hybrid redundancy configurations under constraints of the cost and reliability values were discussed. Further, the equal incremental principle （EIP） based optimal redundancy configuration was proposed to achieve both maximum reliability and minimum cost objectives Finally, the feasibility of the proposed approaches were validated by calculations in Matlab, which can provide useful suggestions to the practical HVDC systems.

关 键 词：模块化多电平换流器 混合MMC 冗余配置 等微增率准则 

分 类 号：TM85[电气工程—高电压与绝缘技术]