高压电器2017，Vol.53Issue(6)：96-104,9.DOI:10.13296/j.1001-1609.hva.2017.06.017
MMC系统级拓扑及其直流故障电流阻断能力研究
MMC System Topology and Its DC Fault Current Blocking Capability
摘要
Abstract
Because of high cost and immaturity of DC circuit breaker,the modular multilevel converter (MMC) topology with DC fault current blocking capability plays an important role in realizing the control-lability of power grid and improving the operation reliability of MMC.In this paper,based on the analysis of DC-side fault mechanism of the traditional half bridge MMC,the researches on MMC are reviewed.The topology and the DC fault current suppression capability of the MMC with optimized bridge are analyzed,including the submodule hybrid MMC and the diode blocking type MMC.The topology and the DC fault current blocking capability of the single-phase optimized MMC are discussed,including the bridge arm alternately conducting type MMC and the hybrid cascaded MMC.It is concluded that the theoretical researches on the MMC topology with DC fault current blocking capability have become mature,but the engineering implementation topics,such as optimum control of hybrid submodule,improvement of submodule packaging,coordination of serial module and switching device,and device cooling,need further study.关键词
模块化多电平换流器(MMC)/直流故障/优化拓扑/故障阻断Key words
modular multilevel converter(MMC)/DC fault/optimization topology/fault blocking引用本文复制引用
唐立,袁旭峰,李宁,唐圣辉,谈竹奎..MMC系统级拓扑及其直流故障电流阻断能力研究[J].高压电器,2017,53(6):96-104,9.基金项目
国家自然科学基金(51667007) （51667007）
中国南方电网有限责任公司重点科技项目(GZKJQQ00000417).Project Supported by National Natural Science Foundation of China(51667007),the Key Science and Technology Projects of China Southern Power Grid Co.,Ltd.(GZKJQQ00000417). （GZKJQQ00000417）
