Numerical simulation of high-current vacuum arc characteristics under combined action of axial magnetic field and external magnetic field from bus bar

Wang, Lijun; Jia, Shenli; Liu, Ke; Wang, Liuhuo; Shi, Zongqian

doi:10.1063/1.3246006

Cited by 30 publications

(5 citation statements)

References 16 publications

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“…External magnetic field will affect its characteristics since the ADP can be regarded as a magnetic fluid. Wang et al [80] explored the effects of axial magnetic field (AMF) and external magnetic field from bus bar (EMFBB) on high-current vacuum arc (HCVA) characteristics by modeling a 2D HCVA under the combined action of AMF and EMFBB. The results showed that the Lorentz force produced by EMFBB and higher arc current can deflect HCVA column, and the current on the side near the cathode deflects the Lorentz force more obviously than the current on the side near the anode.…”

Section: Numerical Simulation Of Adp Generatorsmentioning

confidence: 99%

Research progress on numerical simulation of arc discharge plasma process

Zhang,

Yuan,

Ding

et al. 2024

Phys. Scr.

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The arc discharge plasma (ADP) technology has been widely developed in the fields of cutting, welding, spraying and nanomaterials synthesis over the past 20 years. However, during the process of ADP, it is difficult to explain the generation and evolution of arc column, the interaction between arc column and electrodes, as well as the effect of plasma generator structure on the physical characteristics of ADP by experimental means. Therefore, numerical simulation has become an effective mean to explore the physical characteristics of ADP, but also faces severe challenges because it involves multiple physical field coupling, resolution of multiscale features as well as robustness in the presence of large gradients. From the point of view of the construction of ADP mathematical physical models and combined with the practical application of ADP, this paper systematically reviews the researches on physical properties of arc column, near-cathode region, near-anode region as well as the today’s state of the numerical simulation of plasma generators. It provides a good reference for further mastering the physical characteristics of plasma, guiding the industrial application of plasma and optimizing the design of plasma generators. Meanwhile, the relevant computational aspects are discussed and the challenges of plasma numerical simulation in the future are summarized.

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Section: Numerical Simulation Of Adp Generatorsmentioning

confidence: 99%

Research progress on numerical simulation of arc discharge plasma process

Zhang,

Yuan,

Ding

et al. 2024

Phys. Scr.

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“…To solve the former equations set (1-7), COMSOL Multiphysics was greatly helpful; some predefined functions were used for better simulation. Boundary conditions were defined as in [13]; more detailed calculations were presented by [14]. In this simulation B y represents AMF which is considered to be uniformly distributed, meaning that the gradient of B y along different directions is zero.…”

Section: Model Descriptionmentioning

confidence: 99%

Investigation of DC Vacuum Arc Interruption Ability with Combined Axial and Radial Magnetic Field

Dweikat

Huang

Shen

et al. 2012

AMR

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DC Vacuum Circuit Breakers based arc control has been a major topic in the last few decades. Understanding vacuum arc (VA) gives the ability to improve vacuum circuit breakers capacity. In this paper, the interaction of a DC vacuum arc with a combined Axial-Radial magnetic field was investigated. The proposed system contains an external coil to produce axial magnetic field (AMF) across the vacuum chamber. The vacuum interrupter (VI) contacts were assumed to be untreated radial magnetic field (RMF) contacts. For this purpose, Finite Element Method (FEM) based Multiphysics simulation of the immerging magnetic field influence on the VA is presented. The simulation shown the ability of the presented system to deflect high DC vacuum arc, also reveals that the vacuum arc interruption capability increases with the rise of the axial component of the magnetic field. Simulation results shown that this method can be applied to improve the interruption capability of the VI.

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“…Many researchers conducted modeling and simulation studies on vacuum arcs [20][21][22][23][24][25][26][27][28][29][30][31]. Recently, through the numerical simulation, Wang et al studied the vacuum arc characteristics under the influence of the electrode's self-generated axial magnetic field (AMF) and ETMF [32][33][34][35]. However, the above researchers did not consider both the real AMF and real ETMF in the case of a three-dimensional model, and neither studied how to weaken the influence of the ETMF on vacuum arc by changing the structural parameters.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation on the influence of circuit breaker structure parameters on vacuum arc behaviors

Zhao¹,

Gou²,

Yang³

et al. 2020

J. Phys. D: Appl. Phys.

Self Cite

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In a switchgear, an external transverse magnetic field (ETMF) is generated by the U type loop consisting of the vacuum interrupter, external busbar and conductive rod connected to the vacuum interrupter. The ETMF will make the vacuum arc deflected and strengthen the contraction of the arc. This can increase the probability of breaking failure. To weaken the adverse effect of the ETMF, the real magnetic field data of the arc area with different structure parameters when the length of conductive rod, external busbar and phase distance is changed are obtained by establishing simulation model in this paper. Taking the real magnetic field data as the boundary condition, this paper obtains the typical parameters of the vacuum arc plasma with different structure parameters by using the established three-dimensional high-current vacuum arc magnetohydrodynamics model. The simulation results show that the ETMF makes the transverse magnetic field (TMF) of the arc area asymmetric, which leads to an arc deflection. Reducing the length of the conductive rod connected to the vacuum interrupter to 50 mm can effectively improve the asymmetry of the TMF caused by the EMTF, weaken the arc deflection phenomenon, make the distribution of the plasma parameters more uniform, and increases the utilization of the anode contact surface. Moreover, it can not only reduce the heat flux density into the anode as a whole, but also reduce the heat flux density in the high heat flux density area, so as to effectively reduce the degree of anode activity and improve the negative effects caused by the anode activity. The changes of other external structural parameters have less influence on the improvement of the vacuum arc deflection phenomenon. Increasing the phase spacing to 275 mm or reducing the length of the external bus bar to 100 mm can only slightly weaken the arc deflection.

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Numerical simulation of high-current vacuum arc characteristics under combined action of axial magnetic field and external magnetic field from bus bar

Cited by 30 publications

References 16 publications

Research progress on numerical simulation of arc discharge plasma process

Research progress on numerical simulation of arc discharge plasma process

Investigation of DC Vacuum Arc Interruption Ability with Combined Axial and Radial Magnetic Field

Numerical investigation on the influence of circuit breaker structure parameters on vacuum arc behaviors

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