Protection scheme based on resistive current-limiting for direct current distribution network inter-pole short-circuit

Xiaolong Xiao; Xinyao Si; Xiuru Wang; Jiale Lv; Xingfeng Xie; Xiaoyong Cao; Jianwen Liu

doi:10.1117/12.2619325

29 November 2021 Protection scheme based on resistive current-limiting for direct current distribution network inter-pole short-circuit

Xiaolong Xiao, Xinyao Si, Xiuru Wang, Jiale Lv, Xingfeng Xie, Xiaoyong Cao, Jianwen Liu

Author Affiliations +

Proceedings Volume 12080, 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021); 1208010 (2021) https://doi.org/10.1117/12.2619325
Event: 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021), 2021, Nanchang, China

Abstract

Aiming at the problems of a large-scale power failure and the slow recovery of the system which caused by converter block in the case of inter-pole short circuit in DC distribution network, this paper proposes a short-circuit protection scheme of inter-pole short circuit in DC distribution network based on fault current limiting module and DC circuit breaker (DCCB). Based on resistive current limiting topology by analyzing the bridge arm current of the converter and the transient characteristics of the DC side fault current, and combining the performance parameters of the converter IGBT, diode devices, and DCCB, we give the theoretical calculation method and selection principle of the resistance parameters. The proposed protection scheme can realize the fault ride-through of the converter during the DC inter-pole short circuit, which reduces the outage scope, lower the requirements of DCCB operation time and opening capacity, and shorten the system recovery time. Simulation results in the PSCAD/EMTDC environment combined with actual engineering parameters verify the correctness and feasibility of the protection scheme.

Citation Download Citation

Xiaolong Xiao, Xinyao Si, Xiuru Wang, Jiale Lv, Xingfeng Xie, Xiaoyong Cao, and Jianwen Liu "Protection scheme based on resistive current-limiting for direct current distribution network inter-pole short-circuit", Proc. SPIE 12080, 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021), 1208010 (29 November 2021); https://doi.org/10.1117/12.2619325

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