串联多端直流输电系统接地极拓扑研究
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Electrode Topology Research in Series Multi-terminal HVDC Transmission System
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    摘要:

    随着全球能源互联网战略的推进,国内很多科研机构已经开始研究将串联多端直流输电系统应用于跨海联网、电流源与电压源换流器混合直流输电等方向。串联换流器在正常运行时不能接地的特征决定了其可靠性有待提高。本文分析了串联多端直流输电系统在不同运行方式下对接地极拓扑的要求,据此提出了串联多端直流输电的接地极拓扑及控制方法,该接地极拓扑能有效避免串联多端直流输电系统在任意设备检修时发生整体停运。

    Abstract:

    With the advancement of the global energy interconnection strategy,many domestic scientific institutions have already done researches on the series multi-terminal HVDC systems applied into the cross-sea interconnection,LCC and VSC hybrid transmission and other area.However,the inherent characteristic that series converter can't be grounded in normal operation determines its reliability should be improved higher.Therefore,this paper analyzes the requirement of electrode topology for series multi-terminal HVDC transmission system in different operating modes and proposes an electrode topology of series multi-terminal HVDC system and its control method.At last,it is concluded that the electrode topology can effectively avoid the overall outage of the series multi-terminal HVDC system in the case of any equipment overhaul.

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邹强,马云龙,杨建明,王永平,赵文强,俞翔.串联多端直流输电系统接地极拓扑研究[J].电力工程技术,2018,37(5):132-136

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  • 收稿日期:2018-04-27
  • 最后修改日期:2018-06-12
  • 录用日期:2018-04-02
  • 在线发布日期: 2018-09-28
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