文章摘要
模块化多电平换流阀子模块旁路方案设计
A Bypass Scheme Design For Modular Multi-level Converter Sub-module
投稿时间:2020-02-19  修订日期:2020-03-23
DOI:
中文关键词: 柔性直流  模块化多电平  换流阀  旁路方案
英文关键词: UHVDC-Flexible transmission system  modular multilevel converter  Bypass Scheme
基金项目:国家重点研发计划资助(项目编号:2017YFB0903100);南瑞集团“±800kV特高压柔性直流换流阀研制”项目资助(合同号:JS1800147)
作者单位E-mail
段军 南京南瑞继保电气有限公司 duanj@nrec.com 
谢晔源 南京南瑞继保电气有限公司  
朱铭炼 南京南瑞继保电气有限公司  
殷冠贤 南京南瑞继保电气有限公司  
方太勋 南京南瑞继保电气有限公司  
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中文摘要:
      模块化多电平电压源型换流阀(Modular Multi-level Converter, MMC)作为±800kV特高压柔性直流输电系统中的关键设备,其子模块的可靠性直接影响到整个系统的安全稳定运行。本文系统设计了基于永磁双驱动旁路开关的主动旁路方案,设计了基于双向转折晶闸管的被动旁路方案。结合主动旁路的经济性和被动旁路的可靠性,设计了分级旁路方案。试验结果表明,主动旁路方案能主动下发旁路命令可靠旁路故障子模块;在主动旁路方案失效的情况下,被动旁路方案可靠旁路故障子模块,解决了因子模块单一故障引起换流系统跳闸的难题,为±800kV特高压柔性直流换流阀工程实施提供了设计指导。#$NL关键词:柔性直流;模块化多电平;换流阀;旁路方案 #$NL中图分类号:TM711 文献标志码:A 文章编号:
英文摘要:
      As the key equipment of ±800kV UHVDC-Flexible transmission system,the reliability of modular multilevel con-verter Sub-module operation directly affect the safety and stability of the whole system. A sub-module bypass scheme is fully proposed in this paper. An active bypass scheme based on a permanent magnetic dual-drive bypass switch is designed. A passive bypass scheme based on Breakover Bidirectional thyristor is designed. Considering the economics of active bypass and the reliability of passive bypass, a hierarchical bypass scheme is designed. The test results show that fault sub-module can be reliable bypassed by command from the Active bypass scheme The test results also show that in the case of the failure of the active bypass scheme, the passive bypass scheme can reliably bypass the fault sub-module. The hierarchical bypass solves the problem that a single faulty sub-module causes the transfer system tripping. This paper provides a design guidance for the implementation of ±800kV UHVDC-Flexible valve.#$NLKeywords: UHVDC-Flexible transmission system; modular multilevel converter; Bypass Scheme (key words)
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