文章摘要
庞玉彬,朱大宾,霍群海,等.具有故障隔离能力的新型MMC子模块及混联桥臂拓扑[J].电力系统自动化,2018,42(18):131-135. DOI: 10.7500/AEPS20170911002.
PANG Yubin,ZHU Dabin,HUO Qunhai, et al.A New Type of MMC Sub-module and Hybrid Arm Topology with Capability of Fault Isolation[J].Automation of Electric Power Systems,2018,42(18):131-135. DOI: 10.7500/AEPS20170911002.
具有故障隔离能力的新型MMC子模块及混联桥臂拓扑
A New Type of MMC Sub-module and Hybrid Arm Topology with Capability of Fault Isolation
DOI:10.7500/AEPS20170911002
关键词: 柔性直流输电  模块化多电平换流器  故障隔离型子模块  直流线路故障  故障清除  混联型桥臂拓扑
KeyWords: voltage source converter based high voltage direct current(VSC-HVDC)  modular multilevel converter  fault isolated sub-module  DC line fault  fault clearance  hybrid arm topology
上网日期:2018-08-02
基金项目:国家重点研发计划资助项目(2016YFB0900900);国家自然科学基金资助项目(51607171);中国科学院青年创新促进会资助项目(2017180)
作者单位E-mail
庞玉彬 中国科学院大学, 北京市 101408
中国科学院电工研究所, 北京市 100190 
 
朱大宾 北京精密机电控制设备研究所, 北京市 100076  
霍群海 中国科学院大学, 北京市 101408
中国科学院电工研究所, 北京市 100190 
huoqunhai@163.com 
尹靖元 中国科学院电工研究所, 北京市 100190  
韦统振 中国科学院大学, 北京市 101408
中国科学院电工研究所, 北京市 100190 
 
摘要:
      针对半桥型模块化多电平换流器不具有直流故障阻断能力,柔性直流输电架空线方案存在较高暂态故障率问题,首先提出了一种三电容钳位型双子模块(TCDSM)拓扑。该拓扑与现有钳位双子模块相比,改善了基于钳位双子单元模块柔性直流输电直流侧短路反向电流故障隔离能力。然后,详细介绍了TCDSM拓扑的工作原理和性能分析,并提出了一种新型混联型桥臂换流站方案。新提出的混联型桥臂方案与钳位双子模块和半桥子模块组成的混联型桥臂方案相比,在不牺牲阻断能力的前提下,运行损耗基本相当,初始建站成本更低,从整体上优化了换流站建设成本。最后,通过仿真和实验结果验证了该拓扑及新型混联型桥臂方案的可行性。
Abstract:
      The half-bridge modular multi-level converter does not have the DC fault blocking capability and the high transient failure rate of the scheme of voltage source converter based high voltage direct current(VSC-HVDC)transmission overhead line. This paper proposes a three-capacitor clamping double sub-module(TCDSM)topology. Compared with the existing clamping double sub-module, the topology improves the isolated current fault isolation capability of the DC-side short-circuit based on the clamping double sub-module VSC-HVDC transmission. The working mechanism and performance analysis of TCDSM topology is introduced in detail, and a new hybrid arm converter scheme is proposed. Compared with the hybrid arm system, which is composed of the clamping double sub-module and the half-bridge module, the cost of new operation is lower than that of the hybrid arm device without sacrificing the blocking capability, optimizing the overall converter station construction costs. Finally, the feasibility of the topology and the new hybrid arm is verified by simulation and experiment.
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