A comparative analysis of metal-oxide surge arrester

Velani, Mihir N.

doi:10.1109/icecds.2017.8389816

Cited by 4 publications

(2 citation statements)

References 1 publication

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“…It will experience a momentary short circuit fault when subjected to breakdown voltage [1]. Therefore, MOA can protect substation equipment and line equipment from damage caused by operating overvoltage or lightning overvoltage, thus ensuring the reliable operation of the power system [2]. Polymeric housed MOA has the advantages of better anti-fouling, water repellent and anti-seismic.…”

Section: Introductionmentioning

confidence: 99%

Defect Analysis and Process Improvement of Metal-Oxide Arrester

Guo

et al. 2022

J. Phys.: Conf. Ser.

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Metal-Oxide Arresters are important equipment to ensure the reliable operation of power systems. An experimental protocol for judging the nature of MOA defects accurately is introduced in this paper and applied to engineering practice. Through diagnostic tests and dismantling inspections, it is determined that a certain batch of 110kV line MOA has a familial defect of poor sealing. Then, the reasons for dampness are analyzed, and other defects except the dampness of the varistor are discovered. Besides, the improvement of manufacturing process is proposed from aspects of terminal structure and the coating material on the side of varistor;the actual data proves that adding fillers such as quartz sand or silica gel inside the MOA can reduce the failure rate effectively. This article provides a certain technical reference for the manufacture and defect disposal of MOAs.

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Section: Introductionmentioning

confidence: 99%

Defect Analysis and Process Improvement of Metal-Oxide Arrester

Guo

et al. 2022

J. Phys.: Conf. Ser.

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“…Safe operation of arrester directly affects the safety of the power grid [1]. Zinc oxide arresters have good non-linear resistance characteristics, and because of their high protection performance, large current capacity, simple working principle, they are widely used in overvoltage protection of high-voltage electrical equipment including electric cables [2].…”

Section: Introductionmentioning

confidence: 99%

Analysis of leakage current characteristics of high voltage cable terminal lightning arrester

Li¹,

Zhang²,

Duan³

et al. 2022

International Conference on Mechanisms and Robotics (ICMAR 2022)

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In order to protect high-voltage cables from lightning overvoltage and operating overvoltage, lightning arresters should be installed at both ends of the high-voltage cable. According to the resistive component of leakage current, the operating status of the zinc oxide arrester can be effectively judged. A finite element simulation modeling method for zinc oxide arrester is proposed, of which the accuracy is verified through experiments. The simulation analysis of the leakage current characteristics of 220kV arresters under different damp conditions was conducted, which provides a reference for online monitoring and early warning of the arresters.

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