Yi CHEN (陈毅), Fei YANG (杨飞), Hao SUN (孙昊), Yi WU (吴翊), Chunping NIU (纽春萍), Mingzhe RONG (荣命哲). Influence of the axial magnetic field on sheath development after current zero in a vacuum circuit breaker[J]. Plasma Science and Technology, 2017, 19(6): 64003-064003. DOI: 10.1088/2058-6272/aa65c8
Citation:
Yi CHEN (陈毅), Fei YANG (杨飞), Hao SUN (孙昊), Yi WU (吴翊), Chunping NIU (纽春萍), Mingzhe RONG (荣命哲). Influence of the axial magnetic field on sheath development after current zero in a vacuum circuit breaker[J]. Plasma Science and Technology, 2017, 19(6): 64003-064003. DOI: 10.1088/2058-6272/aa65c8
Yi CHEN (陈毅), Fei YANG (杨飞), Hao SUN (孙昊), Yi WU (吴翊), Chunping NIU (纽春萍), Mingzhe RONG (荣命哲). Influence of the axial magnetic field on sheath development after current zero in a vacuum circuit breaker[J]. Plasma Science and Technology, 2017, 19(6): 64003-064003. DOI: 10.1088/2058-6272/aa65c8
Citation:
Yi CHEN (陈毅), Fei YANG (杨飞), Hao SUN (孙昊), Yi WU (吴翊), Chunping NIU (纽春萍), Mingzhe RONG (荣命哲). Influence of the axial magnetic field on sheath development after current zero in a vacuum circuit breaker[J]. Plasma Science and Technology, 2017, 19(6): 64003-064003. DOI: 10.1088/2058-6272/aa65c8
State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
Funds: This work was supported by the National Key Basic Research Program of China (973 Program) 2015CB251002, National Natural Science Foundation of China under Grant 51521065, 51577145, 51377128, 51323012, 51607135, Program of State Grid Electrical Power Research Institute GY71-14-004, the Science and Technology Project Funds of the Grid State Corporation (Medium voltage DC distribution protection) (SGSNKYOOKJJS1501564), the Science and Technology Project Funds of Hubei Electric Power Company (SGRIZLKJ (2016)325), State Key Laboratory of Electrical Insulation and Power Equipment (EIPE17305).
After current zero, which is the moment when the vacuum circuit breaker interrupts a vacuum arc, sheath development is the first process in the dielectric recovery process. An axial magnetic field (AMF) is widely used in the vacuum circuit breaker when the high-current vacuum arc is interrupted. Therefore, it is very important to study the influence of different AMF amplitudes on the sheath development. The objective of this paper is to study the influence of different AMF amplitudes on the sheath development from a micro perspective. Thus, the particle in cell-Monte Carlo collisions (PIC-MCC) method was adopted to develop the sheath development model. We compared the simulation results with the experimental results and then validated the simulation.We also obtained the speed of the sheath development and the energy density of the ions under different AMF amplitudes. The results showed that the larger the AMF amplitudes are, the faster the sheath develops and the lower the ion energy density is, meaning the breakdown is correspondingly more difficult.
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