Sequential auto-reclosing strategy for hybrid HVDC breakers in VSC-based DC grids

被引:0
|
作者
Xiangyu PEI [1 ]
Guangfu TANG [2 ]
Shengmei ZHANG [3 ]
机构
[1] China Electric Power Research Institute
[2] Global Energy Interconnection Research Institute Co.Ltd.
[3] North China Electric Power University
基金
国家重点研发计划;
关键词
Overhead line; Voltage-sourced converter(VSC)-based direct current grid; Temporary fault; Hybrid HVDC breaker(HHB); Auto-reclosing strategy;
D O I
暂无
中图分类号
TM762.2 [自动重合闸];
学科分类号
080802 ;
摘要
The use of overhead lines for power transmission in the future high-voltage and large-capacity voltagesource converter(VSC)-based direct current(DC) grid will significantly increase the probability of temporary faults.To eliminate potential adverse impacts such as erroneous protection, line-insulation failure, and even damage to power electronic devices resulting from a DC breaker reclosing operation with the traditional sequential autoreclosing strategy, a new sequential auto-reclosing strat-egy for hybrid HVDC breakers(HHBs) in VSC-based DC grids is proposed. This strategy is based on the step-by-step operation of the transfer branch in the HHB. As a result,du/dt resulting from the HHB reclosing operation is greatly reduced, and therefore those potential negative impacts can be eliminated. Several other advantages are also presented.The feasibility and validity of the proposed strategy are verified in a four-terminal annular VSC-based DC grid electromagnetic transient model.
引用
收藏
页码:633 / 643
页数:11
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