Experimental Study on the Short-Circuit Failure Mechanism of Cumulative Discharge in Gas Discharge Tube

Cheng, Lingyun; Chen, Weijiang; Xiang, Nianwen; Li, Kejie; Bian, Kai; Yang, Jianzhi; Xu, Zhifei; Han, Congying; Zhang, Wei; Wan, Yihu

doi:10.1109/tps.2020.3042494

Cited by 9 publications

(4 citation statements)

References 17 publications

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“…The X-ray observation results shown in figure 15 indicate that the short-circuit failure pathway of the C-type GDT is formed by the connection of the growths between the electrodes, but this growth behavior is different from that of the flocs between the electrodes described previously in the [26]. When these observations are combined with the comparison of the micromorphology shown in figure 16(a), the C-type GDT electrode surface is flatter than the corresponding surfaces of both the A-type and B-type GDTs, and only local particles accumulate at the lower right side, thus indicating that the arc is largely concentrated in this area.…”

Section: Improvement Of Electrode Materialsmentioning

confidence: 74%

“…The deposits on the tube wall and the flocs that are present between the two electrodes after cumulative discharges have been considered to be the main reason for the reduction of the GDT's insulation resistance and the shortcircuit failures in the authors' previous research [26]. As a continuation of this work, the work presented in this paper aims to reduce the failure risk of GDTs by suppressing the short-circuit failure pathways that exist between the electrodes.…”

Section: Introductionmentioning

confidence: 94%

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Reliability improvement of gas discharge tube by suppressing the formation of short-circuit pathways

Cheng¹,

Xiang²,

Li³

et al. 2022

Plasma Sci. Technol.

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After cumulative discharge of gas discharge tube (GDT), it is easy to form a short circuit pathway between the two electrodes, which increases the failure risk and causes severe influences on the protected object. To reduce the failure risk of GDT and improve cumulative discharge times before failure, this work aims to suppress the formation of two short-circuit pathways by optimizing the tube wall structure, the electrode materials and the electrode structure. A total of five improved GDT samples are designed by focusing on the insulation resistance change that occurs after the improvement; then, by combining these designs with the microscopic morphology changes inside the cavity and the differences in deposition composition, the reasons for the differences in the GDT failure risk are also analyzed. The experimental results show that compared with GDT of traditional structure and material, the method of adding grooves at both ends of the tube wall can effectively block the deposition pathway of the tube wall, and the cumulative discharge times before device failure are increased by 149%. On this basis, when the iron-nickel electrode is replaced with a tungsten-copper electrode, the difference in the electrode’s surface splash characteristics further extends the discharge times before failure by 183%. In addition, when compared with the traditional electrode structure, the method of adding an annular structure at the electrode edge to block the splashing pathway for the particles on the electrode surface shows no positive effect, and the cumulative discharge times before the failure of the two structures are reduced by 22.8% and 49.7% respectively. Among these improved structures, the samples with grooves at both ends of the tube wall and tungsten-copper as their electrode material have the lowest failure risk.

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Section: Improvement Of Electrode Materialsmentioning

confidence: 74%

Section: Introductionmentioning

confidence: 94%

Reliability improvement of gas discharge tube by suppressing the formation of short-circuit pathways

Cheng¹,

Xiang²,

Li³

et al. 2022

Plasma Sci. Technol.

Self Cite

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“…It is important to note that the sparkover voltage and time to breakdown of the SPD exhibit a statistical behavior since the breakdown of the voltage switching-components is stochastic in nature; an alternative statistical modeling approach treating DE * employed in (1) as a statistical quantity is presented in Appendix B. For the SPD under study, the stochastic sparkover performance of the integrated GDT depends on several parameters such as electrode morphology, material, and erosion as well as gas mixture composition and pressure [41], [42].…”

Section: A Sparkover Performancementioning

confidence: 99%

An Experimental Methodology for Modeling Surge Protective Devices: An Application to DC SPDs for Electric Vehicle Charging Stations

Tsovilis,

Hadjicostas,

Staikos

et al. 2024

IEEE Trans. on Ind. Applicat.

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This work introduces an experimental methodology for time-domain modeling of low-voltage surge protective devices (SPDs), accounting for their sparkover performance as well as their resistive, inductive, and capacitive behavior. The modeling procedure is demonstrated through an application to a combination type SPD connected to the DC side of electric vehicle charging stations. An equivalent circuit model is developed based on experimental records acquired from applied voltages and currents of a wide frequency range and energy content. The developed lumped-circuit model yields results in very good agreement with experimental data regarding sparkover voltage, residual voltage, and energy absorption of SPDs, as illustrated through ATP-EMTP simulations. The proposed methodology can be an effective tool for surge protection and insulation coordination studies.

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“…However, their inevitable flaw lies in the fact that the arc voltage will continue to decrease as the discharge times increase [23][24][25]. Cheng et al conducted an experimental study on the failure mechanism of the cumulative discharge of GDTs, and the results showed that the insulation resistance decreased after certain times of discharges, and there was a risk of SC fault, which was mainly caused by cumulative discharge [26]. Xiang et al studied the follow-current disruption and protective measures of GDTs, and the results showed that the GDT will form an SC at the power-frequency follow currents.…”

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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Experimental Study on the Short-Circuit Failure Mechanism of Cumulative Discharge in Gas Discharge Tube

Cited by 9 publications

References 17 publications

Reliability improvement of gas discharge tube by suppressing the formation of short-circuit pathways

Reliability improvement of gas discharge tube by suppressing the formation of short-circuit pathways

An Experimental Methodology for Modeling Surge Protective Devices: An Application to DC SPDs for Electric Vehicle Charging Stations

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

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