A method of simulating magnetically driven arcs [in switchgear]

Horinouchi, Katsuhiko; Nakayama, Yasushi; Hidaka, Mikio; Yonezawa, T.; Sasao, H.

doi:10.1109/61.568243

Cited by 32 publications

(6 citation statements)

References 7 publications

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“…Similarly, the positive ion concentration at the negative electrode surface was set to zero. The transient Gaussian pulse sources were added on the surface of the arc striking line according to Equation (10). The outer boundaries of the simulation domain during the ion transport process were defined by the open boundaries which were conceded as the zero flux boundaries, as shown in Figure 1a.…”

Section: Initial Conditions and Boundary Conditionsmentioning

confidence: 99%

“…The reliable extinction of the secondary arc is very important for the successful implementation of single-phase automatic reclosing [1][2][3]. At present, a great deal of research has been carried out on the physical characteristics [4][5][6][7] and mathematical model [8][9][10][11][12] of short-circuit arc and secondary arc. Since the diameter of the short-circuit arc channel is much larger than that of the secondary arc channel, the initial position of the secondary arc in the short-circuit arc channel is random.…”

Section: Introductionmentioning

confidence: 99%

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Space Plasma Distribution Effect of Short-Circuit Arc on Generation of Secondary Arc

Cong

et al. 2018

Energies

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Secondary arc is more severe in the ultra-high voltage (UHV) power grid. However, the mechanism for the generation process of secondary arc at the extinction moment of a short-circuit arc is not yet clear. It is of great theoretical significance and technological application value to study the generation mechanism and dynamic physical characteristics of secondary arc, and further to develop effective suppression technology. In this article, an arc numerical simulation model based on the coefficient partial differential equations combining with classical drift-diffusion model was established, and the implementation method based on the finite element software COMSOL (COMSOL Multiphysics 5.2a, COMSOL Inc., Stockholm, Sweden) was given. Then, the transient analysis method was applied to simulate the generation, diffusion and dissipation phenomena of the short-circuit arc strike, and further to explore the electric field, microscopic particle spatial distribution and reaction process during the arc discharge process. The simulation results show that the development of short-circuit arc mainly includes two processes: corona discharge and arc discharge, of which the former has a very short duration and the latter is caused by short-circuit. During the discharge process, the electron density first increases and then decreases, which is different from the general characteristics of streamer discharge. Although the concentration distribution curve of the positive ions and negative ions has the same trend, there are subtle differences. The diffusion effect of space ions in the initial discharge stage is almost zero, while radial diffusion direction in the peak discharge stage and axial direction in the late discharge stage. The electric field intensity in space has an S-shaped upward trend during discharge. The time relationship of the ion source generated by the neutralization reaction and by the short-circuit arc discharge are basically the same, and the rate of neutralization reaction is lowest near the electrode. When the ionic reaction is approaching the end of the simulation, the ionic concentration is higher than the initial level, which proves that the space ionic concentration is increased due to the short-circuit discharge, and providing the necessary environmental conditions for the subsequent generation of the secondary arc.

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Section: Initial Conditions and Boundary Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Space Plasma Distribution Effect of Short-Circuit Arc on Generation of Secondary Arc

Cong

et al. 2018

Energies

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“…The arc chain model was first proposed by Horinouch et al [15]. The principle of the arc chain model is to treat the arc as a series of rigid cylindrical current elements connected end-toend, considering the self-magnetic field of arc, and conducting an independent force analysis for each current element.…”

Section: Introductionmentioning

confidence: 99%

Research on driving force and dynamic characteristics of pantograph–catenary arc

Qian

Gao

Dong

et al. 2023

J. Phys. D: Appl. Phys.

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pantograph-catenary(PC) system is the key current collection equipment for electrified rail vehicles. The PC arc aging the contact line and pantograph abnormally, which is a limiting factor for rail transit to increase the speed of operation. To reduce the harm caused by PC arc, in this article, a new PC arc chain model was established, which considered the arc current element mass and the acceleration process, updating control equations. Meanwhile, a PC arc experimental platform was built in order to verify this model. It is demonstrated that the simulation results by this work fit the arc and is suitable to describe the arc in field. Experiments have found that the evolution of PC arc can be divided into three distinct processes: arc initial process, rapid stretching process and violent oscillation process. Combined with the model, the driving force and dynamic characteristics of the PC arc root and column in each process have been studied. The electromagnetic force dominates the arc evolution in first two processes, then the wind load dominates the last process. Besides, thermal buoyancy dominates arc root jumping behavior. The driving mechanism for the movement of arc has been revealed. The arc root first suppresses the arc column, and then the arc column pulls the arc root. It is helpful for controlling of PC arc in field.

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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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A method of simulating magnetically driven arcs [in switchgear]

Cited by 32 publications

References 7 publications

Space Plasma Distribution Effect of Short-Circuit Arc on Generation of Secondary Arc

Space Plasma Distribution Effect of Short-Circuit Arc on Generation of Secondary Arc

Research on driving force and dynamic characteristics of pantograph–catenary arc

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

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