Simulation Analysis of Arc Evolution Process in Multiple Parallel Contact Systems

Yin, Jianguo; Wang, Qian; Li, Xingwen

doi:10.1109/tps.2018.2828330

Cited by 16 publications

(5 citation statements)

References 19 publications

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“…where Φ is the variable solved, ρ is the mass density, t is the time,  v is the velocity vector, G F is the diffusion coefficient S is the source term. All the equations solved for the fluid model are summarized in table 1 [23,24].…”

Section: Governing Equationsmentioning

confidence: 99%

Convection effect on an arc plasma evolution process in a two parallel contact system

Yin

Liu

Tang

2019

Plasma Sci. Technol.

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A low voltage circuit breaker (LVCB) is an important piece of protection equipment which will switch off the fault current in a power system. The moving contact of a low voltage circuit breaker with a higher rated current consists of two parallel contacts. Therefore, the convection effect on the air arc evolution process in a two parallel contact system is analyzed. A threedimensional (3D) magneto-hydro-dynamic (MHD) model of arc simulation is built. In this model, the anode consists of two parallel contacts and a bonding conductor. A nonlinear voltage-current density characteristic is employed to represent the near-anode and near-cathode voltage. The current density, arc voltage and currents through every contact are obtained. The influence of convection and conduction on the arc evolution process are quantitatively calculated. The displacements of the arc roots are obtained and the asymmetry of the arc root motion is analyzed. The arc evolution process of a two parallel contact system is preliminarily revealed.

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Section: Governing Equationsmentioning

confidence: 99%

Convection effect on an arc plasma evolution process in a two parallel contact system

Yin

Liu

Tang

2019

Plasma Sci. Technol.

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“…At present, scholars at home and abroad have carried out a lot of research on the arc motion characteristics and its influence mechanism under different air pressures, mainly focusing on switching electrical arc, [12][13][14][15][16] UHV secondary arc [17,18] and pantograph-catenary arc, [10,[19][20][21][22][23][24][25][26][27] and so on, [28] many achievements have been made. Research on arc characteristics under low air pressure mainly focuses on vacuum circuit breaker arc and the arc under extremely low air pressure (< 0.3 atm) environment.…”

Section: Introductionmentioning

confidence: 99%

Drift characteristics and the multi-field coupling stress mechanism of the pantograph-catenary arc under low air pressure

Gao

Qian

et al. 2023

Chinese Phys. B

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The fault caused by the pantograph-catenary arc is the main factor that threatens the stability of high-speed railway energy transmission. Pantograph-catenary arc vertical drift is more severe than the case under normal pressure, as it is easy to develop the rigid busbar, which may lead to the flashover occurring around the support insulators. A pantograph-catenary arc experiment and diagnosis platform was established, which can simulate low pressure and strong airflow environment, and meanwhile, the variation law of arc drift height with time under different air pressure and airflow velocity is analyzed. Moreover, arc drift characteristics and influencing factors were explored. The physical process of the arc column drifting to the rigid busbar with the jumping mechanism of the arc root on the rigid busbar is summarized. In order to further explore the mechanism of the above physical process, a multi-field stress coupling model was established, as the multi-stress variation law of arc was quantitatively evaluated. The dynamic action mechanism of multi-field stress on arc drifting characteristics was explored, as the physical mechanism of arc drifting under low pressure was theoretically explained. The research results provide theoretical support for arc suppression in high-altitude areas.

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“…At present, the arc extinguishing methods include adding ambient gas with excellent arc extinguishing performance [8][9][10], blowing arc out by electromagnetic force [11][12][13], increasing contact breaking speed [14,15], cutting arc with splitter plates [16][17][18], and blasting arc with gas [19,20]. The above research mainly focuses on switching device with the arc in a closed container.…”

Section: Introductionmentioning

confidence: 99%

Research on the arcing horn with active arc extinguishing function for HVDC grounding electrode line

Liu

Yang

Guo

et al. 2023

IET Generation Trans & Dist

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The grounding electrode line is an important part of the Ultra high voltage direct current (UHVDC) transmission system. It acts as the channel to conduct the unbalanced current and the grounding current.The arcing horn consists of a pair of electrodes installed in parallel at both ends of the insulator string, which provides a discharge channel for the fault current by an air gap to protect the insulators. In this paper, the voltage and current distributions of the arcing horn were studied when the grounding electrode line was struck by lightning. It is found that the current and voltage gradually decrease along the direction from the converter station to the earth electrode. An active arc extinguishing method based on variable resistance for arcing horn was proposed. An electromagnetic transient simulation model of the grounding electrode line is established based on the electrical parameters of a ±800 kV UHVDC transmission system. It is found that the absorbed energy of the arc extinguishing unit needs to be at least 31.2 and 49.6 kJ when the lightning current is 20 and 50kA, respectively. According to the calculation results, the arcing horn with arc extinguishing unit was developed and tested. The test results verifies that the designed arcing horn can meet the requirements of engineering application.

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Simulation Analysis of Arc Evolution Process in Multiple Parallel Contact Systems

Cited by 16 publications

References 19 publications

Convection effect on an arc plasma evolution process in a two parallel contact system

Convection effect on an arc plasma evolution process in a two parallel contact system

Drift characteristics and the multi-field coupling stress mechanism of the pantograph-catenary arc under low air pressure

Research on the arcing horn with active arc extinguishing function for HVDC grounding electrode line

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