Capacitor-Commutated HVDC Circuit Breaker with Reclosing Function

Baoge ZHANG , Yuemin JIAO , Rui SUN , Shanyan PING , Boxiang WU

›› 2022, Vol. 16 ›› Issue (9) : 37 -47.

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›› 2022, Vol. 16 ›› Issue (9) : 37 -47. DOI: 10.13648/j.cnki.issn1674-0629.2022.09.005
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Capacitor-Commutated HVDC Circuit Breaker with Reclosing Function

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Abstract

The DC circuit breaker is the core equipment for the safe operation of the DC transmission system. In this paper, a capacitor-commutated HVDC circuit breaker topology with reclosing function is proposed. This topology utilizes the symmetry of the current-limiting branch, which not only realizes the bidirectional fault current breaking function, but also realizes the reclosing function in both transient and permanent faults. In this paper, the working principle of the extracted topology is studied and analyzed in stages, and then the parameter design is carried out. Finally, the PSCAD software is used to build a system simulation model to verify the simulation model. 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 the fault current and reduce the energy consumption requirements of the arrester, but also greatly reduce the number of IGBT used and the cost.

Keywords

HVDC circuit breaker / capacitor-commutatated / current-limiting / reclosing

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Baoge ZHANG,Yuemin JIAO,Rui SUN,Shanyan PING,Boxiang WU. Capacitor-Commutated HVDC Circuit Breaker with Reclosing Function. 2022, 16(9): 37-47 DOI:10.13648/j.cnki.issn1674-0629.2022.09.005

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National Key Research and Development Program of China(2018YFB1201602-06)

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