Research on Conduction Delay Time Characteristics of Double-Gap Surface Flashover Triggered Multistage Vacuum Switch
Ming Zhang,
Minfu Liao (lmf@dlut.edu.cn),
Liang Bu,
Gang Lu,
Longfei Yu,
Yifan Sun and
Xiongying Duan
Additional contact information
Ming Zhang: School of Electrical Engineering, Dalian University of Technology, Dalian 116000, China
Minfu Liao: School of Electrical Engineering, Dalian University of Technology, Dalian 116000, China
Liang Bu: School of Electrical Engineering, Dalian University of Technology, Dalian 116000, China
Gang Lu: School of Electrical Engineering, Dalian University of Technology, Dalian 116000, China
Longfei Yu: School of Electrical Engineering, Dalian University of Technology, Dalian 116000, China
Yifan Sun: School of Electrical Engineering, Dalian University of Technology, Dalian 116000, China
Xiongying Duan: School of Electrical Engineering, Dalian University of Technology, Dalian 116000, China
Energies, 2024, vol. 17, issue 18, 1-12
Abstract:
Due to the insulation saturation effect of a vacuum gap, the series connection is the main method to improve the capability of the triggered vacuum switch (STVS) to withstand voltage. In this paper, a double-gap surface flashover triggered multistage vacuum switch (DMVS) is constructed based on a removable vacuum chamber. The DMVS consists of a surface flashover triggered vacuum gap (STG) and a self-breakdown vacuum gap (SBG) in series. The trend in DMVS conduction delay time under different operating parameters and gap distances is firstly measured through experiments, and then the conduction delay time characteristics of DMVS and single-gap STVS compared. The test results show that increasing the trigger current and operating voltage and decreasing the gap distance of each vacuum gap can optimize the conduction delay time of the DMVS, but the voltage division ratio between the STG and the SBG has no obvious influence on the conduction delay time. The comparison result between the DMVS and the STVS shows that increasing the number of series gaps increases the conduction delay time but, for a certain vacuum gap distance, DMVS exhibits superior conduction delay time characteristics compared to STVS.
Keywords: surface flashover triggered vacuum switch; conduction delay time; series vacuum gap (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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