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基于MMC的背靠背柔性直流输电系统控制策略
引用本文:阳岳希,杨杰,贺之渊,李强,许韦华.基于MMC的背靠背柔性直流输电系统控制策略[J].电力系统自动化,2017,41(4):120-124.
作者姓名:阳岳希  杨杰  贺之渊  李强  许韦华
作者单位:全球能源互联网研究院, 北京市 102211; 直流电网技术与仿真北京市重点实验室, 北京市 102211,全球能源互联网研究院, 北京市 102211; 先进输电技术国家重点实验室, 北京市 102211; 直流电网技术与仿真北京市重点实验室, 北京市 102211,全球能源互联网研究院, 北京市 102211; 先进输电技术国家重点实验室, 北京市 102211; 直流电网技术与仿真北京市重点实验室, 北京市 102211,全球能源互联网研究院, 北京市 102211; 直流电网技术与仿真北京市重点实验室, 北京市 102211,全球能源互联网研究院, 北京市 102211; 先进输电技术国家重点实验室, 北京市 102211; 直流电网技术与仿真北京市重点实验室, 北京市 102211
基金项目:国家电网公司科技项目(2014GW-05)
摘    要:首先研究了基于模块化多电平换流器的高压直流(MMC-HVDC)输电系统的基本控制策略。然后,分析了背靠背MMC-HVDC输电系统的特性,其整流侧换流器与逆变侧换流器的控制系统可共用机柜,因此能实现两侧换流器控制信号的无时延共享。在此基础上,针对背靠背柔性直流的应用需求,提出了一种适用于背靠背MMC-HVDC的控制策略。最后,基于PSCAD/EMTDC搭建了背靠背MMC-HVDC系统仿真模型,验证了所提控制策略的控制效果。

关 键 词:背靠背  高压直流  控制策略  模块化多电平换流器
收稿时间:2016/7/28 0:00:00
修稿时间:2016/12/15 0:00:00

Control Strategy of MMC Based Back-to-back HVDC Transmission System
YANG Yuexi,YANG Jie,HE Zhiyuan,LI Qiang and XU Weihua.Control Strategy of MMC Based Back-to-back HVDC Transmission System[J].Automation of Electric Power Systems,2017,41(4):120-124.
Authors:YANG Yuexi  YANG Jie  HE Zhiyuan  LI Qiang and XU Weihua
Affiliation:Global Energy Interconnection Research Institute, Beijing 102211, China; Beijing Key Laboratory of DC Grid Technology & Simulation, Beijing 102211, China,Global Energy Interconnection Research Institute, Beijing 102211, China; State Key Laboratory of Advanced Power Transmission Technology, Beijing 102211, China; Beijing Key Laboratory of DC Grid Technology & Simulation, Beijing 102211, China,Global Energy Interconnection Research Institute, Beijing 102211, China; State Key Laboratory of Advanced Power Transmission Technology, Beijing 102211, China; Beijing Key Laboratory of DC Grid Technology & Simulation, Beijing 102211, China,Global Energy Interconnection Research Institute, Beijing 102211, China; Beijing Key Laboratory of DC Grid Technology & Simulation, Beijing 102211, China and Global Energy Interconnection Research Institute, Beijing 102211, China; State Key Laboratory of Advanced Power Transmission Technology, Beijing 102211, China; Beijing Key Laboratory of DC Grid Technology & Simulation, Beijing 102211, China
Abstract:First, the basic control strategy of a modular multilevel converter(MMC)based high voltage direct current(MMC-HVDC)transmission system is studied. Then, the characteristics of the back-to-back MMC-HVDC transmission system is analyzed, which can provide synchronous control signal sharing between sending and receiving ends so as to realize delay-free sharing of control signal at two sides of the converter. On this basis, according to the application requirements of MMC based back-to-back high voltage direct current transmission system, a control strategy is proposed. Finally, the effectiveness of the control strategy is verified by digital simulation via PSCAD/EMTDC. This work is supported by State Grid Corporation of China(No. 2014GW-05).
Keywords:back-to-back  high voltage direct current  control strategy  modular multilevel converter(MMC)
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