| 引用本文: | 和敬涵,黄威博,李海英,罗国敏,王光江,许寅.FBMMC直流故障穿越机理及故障清除策略[J].电力自动化设备,2017,37(10): |
| HE Jinghan,HUANG Weibo,LI Haiying,LUO Guomin,WANG Guangjiang,XU Yin.FBMMC DC fault ride-through mechanism and fault clearing strategy[J].Electric Power Automation Equipment,2017,37(10): |
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| 摘要: |
| 针对模块化多电平换流器型直流输电(MMC-HVDC)直流故障的快速清除，对全桥型模块化多电平换流器(FBMMC)直流故障机理及故障清除控制策略进行了研究。研究了全桥子模块的导通模式与运行特性；分析了闭锁前后直流侧双极短路故障机理、故障电流阻断原理和故障清除控制策略。在PSCAD/EMTDC中搭建了仿真模型，对全桥子模块的运行特性、直流故障机理、故障清除及快速恢复策略进行了仿真分析，结果验证了所提策略在直流故障穿越方面的有效性。 |
| 关键词: 模块化多电平换流器 全桥子模块 直流输电 直流故障 闭锁 故障穿越 |
| DOI：10.16081/j.issn.1006-6047.2017.10.001 |
| 分类号:TM46;TM72 |
| 基金项目:国家高技术研究发展计划(863计划)资助项目(2015-AA050101)；国家自然科学基金资助项目(51277009,51507008) |
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| FBMMC DC fault ride-through mechanism and fault clearing strategy |
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HE Jinghan1, HUANG Weibo1, LI Haiying2, LUO Guomin1, WANG Guangjiang1, XU Yin1
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1.School of Electrical and Engineering, Beijing Jiaotong University, Beijing 100044, China;2.Nanjing NR Electric Co.,Ltd.,Nanjing 211102, China
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| Abstract: |
| In view of the rapid clearing of MMC-HVDC(Modular Multilevel Converter based HVDC) DC fault, the DC fault mechanism and fault clearing control strategy of full-bridge modular multilevel converters are studied. The conducting mode and operating characteristics of the full-bridge submodule are analyzed. The mechanism of DC-side pole-to-pole fault, the fault current blocking principle and the fault clearing control strategy before and after locking are proposed. A simulation model is built in PSCAD/EMTDC, based on which the operating characteristics of full-bridge submodule, the DC fault mechanism, the fault clearing and fast recovery strategy are carried out. The simulative results verify the effectiveness of the proposed control strategy for full-bridge submodule in aspects of DC fault ride-through. |
| Key words: modular multilevel converter full-bridge submodule DC power transmission DC fault locking fault ride-through |
