Reliability and failure analysis of porcelain high-voltage surge arresters

Rossman, James B.; Droke, Mark A.; Nelson, Jeffrey H.

doi:10.1109/ichve.2010.5640776

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…There are 31 varistor blocks and 6 aluminum conductive blocks in the core group. The bottom is fastened by a metal flange and the top is fitted with a metal flange and a wiring plate [8].…”

Section: Defective Conditions Of Moamentioning

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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“…There are 31 varistor blocks and 6 aluminum conductive blocks in the core group. The bottom is fastened by a metal flange and the top is fitted with a metal flange and a wiring plate [8].…”

Section: Defective Conditions Of Moamentioning

confidence: 99%

Defect Analysis and Process Improvement of Metal-Oxide Arrester

Guo

et al. 2022

J. Phys.: Conf. Ser.

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“…The EA will in the general case be implemented as a surge arrester (SA) bank with parallel-connected columns, each column consisting of series-connected individual SA units. It is assumed that surge arresters will normally fail in low-resistance state [6]. Therefore, if one unit fails, the voltage of the corresponding column reduces, and the column I-V curve shifts as if it has lower rated voltage.…”

Section: Impact Of Unit Failure In Energy Absorbersmentioning

confidence: 99%

Enhancing reliability of energy absorbers in DC circuit breakers

Zaja

Jovcic

2020

2020 IEEE Power &Amp; Energy Society General Meeting (PESGM)

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Because of high energy absorption requirements, the energy absorbers in DC circuit breakers will consist of a large number of series-and parallel-connected surge arrester units. This study shows that owing to highly nonlinear I-V characteristic of surge arresters, the failure of a single arrester has a significant impact on the performance of the whole energy absorber. In particular, the arrester column containing the failed unit will draw considerably higher current compared to healthy columns which may lead to cascaded failure of arresters and destruction of the whole column. This paper evaluates and proposes new connection topologies for enhancing the robustness and reliability of energy absorbers in high-voltage DC circuit breakers. A matrix structure is proposed as the topology for the greatest reliability. The impact of the number of breaker modules is also investigated.

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“…The application of metal oxide-based surge arresters (MOSA) in electrical and electronics networks is essential practice to mitigate insulation breakdown and thus to reinforce system reliability [1,2]. In the course of power network operation MOSA-based surge protection devices (SPDs) are reportedly prone to electrical ageing, which could lead to reduced surge protection capabilities and to high risk of insulation failure, equipment damage or substation fire [3,4].…”

Section: Introductionmentioning

confidence: 99%

A Review of Leakage Current-based Condition Monitoring Techniques of Metal Oxide Surge Arresters

Bokoro¹

2016

Environment and Water Resource Management / 837: Health Informatics / 838: Modelling and Simulation / 839: Power and Energy Sys

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A review of proposed leakage current-based techniques applied in condition monitoring of metal oxide surge arresters is presented in this study. The fundamental conceptual theories that form the basis of resistive current extraction as well as the challenges associated to the implementation of measurement techniques are evaluated. The problematic influence of system voltage harmonics on reported leakage current assessment methods of gapless metal oxide surge protection units is also examined. It is therefore observed that the proposed methods are not completely reliable, and capacitive current compensation techniques remain the fundamental conceptual theory for future developments of accurate and practical measurement of resistive component without the knowledge of system voltage.

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Reliability and failure analysis of porcelain high-voltage surge arresters

Cited by 5 publications

References 3 publications

Defect Analysis and Process Improvement of Metal-Oxide Arrester

Defect Analysis and Process Improvement of Metal-Oxide Arrester

Enhancing reliability of energy absorbers in DC circuit breakers

A Review of Leakage Current-based Condition Monitoring Techniques of Metal Oxide Surge Arresters

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