Study on the performance of open-circuit failure gas discharge tube under the context of DC short-circuit

Zheng, Chuanxiao; Lü, Hao; Xu, Yongzhong; Wang, Yanlin

doi:10.1016/j.epsr.2022.108777

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…When the applied voltage increases to the extent that the field strength of the interpolar field exceeds the insulation strength of the gas, the gap will be broken down by a discharge and shift from an insulated state to a conductive state, before the conduction of the discharge arcs renders the interpolar voltage into a very low residual voltage, so as to free the electronic equipment in parallel with the GDT from overvoltage damage. A typical GDT consists of a packaging shell of glass or ceramics, and two or three electrodes that are separated by a spark gap permeated with stable inert gas, such as argon and nitrogen [8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on The Performance of External Open-Circuit Failure Gas Discharge Tubes under Power-Frequency Follow Currents

Lu,

Chen,

et al. 2023

Electronics

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A short-circuit fault in the gas discharge tube (GDT) is one of the latent hazards of electrical equipment. It may cause the ignition of electrical equipment. Therefore, based on the existing GDT, an improved external open-circuit failure gas discharge tube (EOFGDT) which can remove short-circuit (SC) failure is presented in this paper, and its structure and working mechanisms are introduced. This EOFGDT can utilize the combustion and heat transfer of continuous arcs due to SC failures to increase the temperature of its end electrode, so as to induce a solder joint failure, by which the elastic sheet on the solder joint becomes disconnected from the end electrode, forming an external gap that reduces the rising speed and amplitude of the recovery voltage across the arc gap, and eventually forms an open circuit (OC) within the structure. The EOFGDT SC condition was simulated and a test of the EOFGDT ability to remove SC faults by using an 8/20 µs impulse current generator coupled with a power-frequency power supply test bed was conducted. The experimental results show that the magnitude of the SC follow currents, power-frequency voltages, and the impulse currents are positively correlated to the OC response time, which is greatly affected by the power-frequency follow currents. When the SC current reaches 30 A, the EOFGDT OC response time is about 350 ms. The experimental waveform is consistent with the screen result of the OC response time of the EOFGDT, which proves the effectiveness of EOFGDTs for the inhibition of SC follow-current failures.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on The Performance of External Open-Circuit Failure Gas Discharge Tubes under Power-Frequency Follow Currents

Lu,

Chen,

et al. 2023

Electronics

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Research on printed circuit board external open-circuit failure gas discharge tube under short-circuit failure

Zheng

Lü

et al. 2023

Electric Power Systems Research

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Benefit allocation of electricity–gas–heat–hydrogen integrated energy system based on Shapley value

Liu,

Li,

Rong

et al. 2023

Clean Energy

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The integrated energy system is an important development direction for achieving energy transformation in the context of the low-carbon development era, and an integrated energy system that uses renewable energy can reduce carbon emissions and improve energy utilization efficiency. The electric power network and the natural gas network are important transmission carriers in the energy field, so the coupling relationship between them has been of wide concern. This paper establishes an integrated energy system considering electricity, gas, heat and hydrogen loads; takes each subject in the integrated energy system as the research object; analyses the economic returns of each subject under different operation modes; applies the Shapley value method for benefit allocation; and quantifies the contribution value of the subject to the alliance through different influencing factors to revise the benefit allocation value. Compared with the independent mode, the overall benefits of the integrated energy system increase in the cooperative mode and the benefits of all subjects increase. Due to the different characteristics of different subjects in terms of environmental benefits, collaborative innovation and risk sharing, the benefit allocation is reduced for new-energy subjects and increased for power-to-gas subjects and combined heat and power generation units after revising the benefit allocation, to improve the matching degree between the contribution level and the benefit allocation under the premise of increased profit for each subject. The cooperative mode effectively enhances the economic benefits of the system as a whole and individually, and provides a useful reference for the allocation of benefits of integrated energy systems. The analysis shows that the revised benefit distribution under the cooperative model increases by 3.86%, 4.08% and 3.13% for power-to-gas subjects, combined heat and power generation units, and new-energy units, respectively, compared with the independent function model.

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Study on the performance of open-circuit failure gas discharge tube under the context of DC short-circuit

Cited by 3 publications

References 6 publications

Experimental Study on The Performance of External Open-Circuit Failure Gas Discharge Tubes under Power-Frequency Follow Currents

Experimental Study on The Performance of External Open-Circuit Failure Gas Discharge Tubes under Power-Frequency Follow Currents

Research on printed circuit board external open-circuit failure gas discharge tube under short-circuit failure

Benefit allocation of electricity–gas–heat–hydrogen integrated energy system based on Shapley value

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