A novel thyristor-based hybrid DC circuit breaker with short arcing capability  

作　　者：Guanlong Jia Yuchen Yuan Hongjiang Guo Xiaoxue Wang Feng Niu 

机构地区：[1]Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province,School of Electrical Engineering,Hebei University of Technology,Tianjin,China

出　　处：《High Voltage》2024年第6期1288-1301,共14页高电压(英文)

基　　金：National Natural Science Foundation of China,Grant/Award Number:52307199;Natural Science Foundation of Hebei Province of China,Grant/Award Number:E2022202065;S&T Program of Hebei,Grant/Award Number:21567605H。

摘　　要：Multi-terminal flexible high-voltage direct current(HVDC)transmission and DC grid technology are developing rapidly.The hybrid DC circuit breaker(HCB)has broad application prospects in the field of HVDC transmission and DC power grid.Never-theless,existing HCBs have one or more following blemishes:arc suppression scheme of mechanical switch,high cost and unreliable adaptive reclosure.In this paper,a modified thyristor-based hybrid DC circuit breaker with short arcing capacity(SA-HCB)is introduced,which consists of the main branch,the fault handling branch and the pre-charging branch.Besides,the modified SA-HCB has the inherent capability of adaptive reclosing.The advantages of thyristors are fully used in the SA-HCB,such as low cost,low conduction voltage drop,and natural shutdown.The detailed structure diagram and mathematical model of the SA-HCB are introduced,and the operation processes of the fault current transfer are also analysed.Later,a design method for parameters of the proposed SA-HCB is provided.Then,a single-ended equivalent system is built in PSCAD/EMTDC to verify the accuracy of the theoretical analysis and parameter design.Subsequently,based on four-terminal simulation,the economy of the SA-HCB is verified by comparing with the topology proposed by ABB.Finally,the small-scale experiment of the proposed SA-HCB is introduced.

关 键 词：PSCAD/EMTDC branch FAULT 

分 类 号：TM561[电气工程—电器] TM721.1