Journal of Applied Science and Engineering

Published by Tamkang University Press


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Baoge ZhangThis email address is being protected from spambots. You need JavaScript enabled to view it.1, Yuemin Jiao1, Rui Sun1, Shanyan Ping1, and BoxiangWu1

1School of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China


Received: March 26, 2022
Accepted: June 6, 2022
Publication Date: October 4, 2022

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

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DC circuit breaker is the core equipment for the safe operation of DC transmission system. A current limiting hybrid HVDC circuit breaker topology with reclosing function is proposed in this paper. The topology makes use of the symmetry of current limiting branch, which not only realizes the bidirectional fault current breaking function, but also realizes the reclosing function in case of transient fault and permanent fault. The current limiting structure of the topology greatly reduces the number of IGBT and the cost. This paper studies and analyzes the working principle of the system in stages, then designs the parameters, and finally uses PSCAD software to build a simulation model for verification. The verification results show that compared with the traditional circuit breaker, the proposed DC circuit breaker can not only effectively reduce the rise rate of fault current and reduce the energy consumption requirements of lightning arrester, but also reduce the number of IGBT and reduce the cost.

Keywords: DCCB; DC power grid; reclosing; energy consumption of arrester


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