Development of leakage current monitoring device for arrester

Takido, Yusuke; Mochizuki, Sho; Takahashi, Yuichi; Ajiki, Kohji; Owaku, Tomohiro; Seto, Masayuki; Nakamura, Nobuhiro; Warigaya, Tomohiro; Watanabe, Tetsushi; Takagi, Kazunori; Ikeda, Tetsuaki; Kikuchi, H

doi:10.1109/iclp.2016.7791344

Cited by 3 publications

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“…Lightning arrester failure is mainly caused by internal defects and external overvoltage. Several monitoring devices are developed for the arrester on-line test [14][15][16]. Several methods exist in the surge protection industry for detecting and disconnecting the defective arresters [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Study on operation voltage monitoring and electrothermal coupling simulation of electric multiple unit (EMU) roof arrester

et al. 2022

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The roof arrester of electric multiple units (EMU) can efficiently limit the overvoltage, and ensure the safe operation of the EMU electrical equipment. In the process of highspeed operation, the traction power supply system is often affected by overvoltage. In addition, roof arrester explosion accidents occasionally occur. In this paper, the on-line voltage measurement system of the EMU arrester is developed. By analysing a large number of voltage waveforms, the abnormal voltage is divided into three categories: over-phase voltage, high harmonic voltage and steep impulse overvoltage. The characteristics of abnormal voltage waveforms are then summarised. The electrothermal coupling simulation model of the arrester is developed, and the current response and temperature distribution of the arrester under abnormal voltage are calculated. The impact of the impulse voltage energy on the arrester temperature is studied by applying a triangular wave voltage to the model. Finally, some suggestions are proposed for the operation and maintenance of the roof arrester.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Introductionmentioning

confidence: 99%

Study on operation voltage monitoring and electrothermal coupling simulation of electric multiple unit (EMU) roof arrester

et al. 2022

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“…Therefore, a defective arrester can be detected using a leakage current test [21,22]. Several monitoring devices were developed for the arrester on-line test [23][24][25]. Based on the test results, state detection methods were proposed [26].…”

Section: Introductionmentioning

confidence: 99%

Research of ZnO Arrester Deterioration Mechanism Based on Electrical Performance and Micro Material Test

et al. 2021

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The traction power supply system of an Electrical Multiple Unit (EMU) often suffers from overvoltage impact. As an important protection device for on-board electrical equipment, the working environment of a roof arrester is worse than that of a power system. In recent years, the explosion failure of the roof arresters of an EMU has occurred from time to time, which seriously endangers the safe operation of high-speed railways. In this paper, the electrical performance test and material micro test of roof arrester in three states of normal, defect, and exploded, are carried out in order to study the internal causes of roof arrester explosion and clarify its deterioration mechanism. Using the DC reference voltage test and leakage current test, the electrical performance differences of normal, defective, and exploded arresters are obtained. By studying the disassembly of an arrester, the appearance characteristics of arrester varistor in three states are obtained. The micro morphology and chemical elements of the varistor are analyzed by Scanning Electron Microscope and Energy Dispersive Spectrometer. The deterioration mechanism of the arrester varistor is then revealed, and preventive measures for the explosion failure of the roof arrester are put forward. The obtained results show that, during the long-term operation of the roof arrester of an EMU, the varistor may be damp, and therefore the aluminum electrode layer and side insulation layer of the varistor may deteriorate. After the deterioration of the aluminum electrode layer, the content of the O element increases, and multiple film structures are formed on the surface. After the deterioration of the side insulating layer, the content of the O element increases, and the surface becomes uneven. Improving the sealing performance requirements of the roof arrester and optimizing the maintenance process can reduce its explosion failure.

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The change of DC parameters of 35kV ZnO arrester under continuous single heavy lightning strike

Ma¹,

Zhou²,

Geng³

et al. 2021

2021 7th International Conference on Systems and Informatics (ICSAI)

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Development of leakage current monitoring device for arrester

Cited by 3 publications

References 0 publications

Study on operation voltage monitoring and electrothermal coupling simulation of electric multiple unit (EMU) roof arrester

Study on operation voltage monitoring and electrothermal coupling simulation of electric multiple unit (EMU) roof arrester

Research of ZnO Arrester Deterioration Mechanism Based on Electrical Performance and Micro Material Test

The change of DC parameters of 35kV ZnO arrester under continuous single heavy lightning strike

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