Results 151 to 160 of about 1,442 (197)
Investigation of on-site diagnostic testing techniques for metal oxide surge arresters
, 2000 Zhu Hanxin
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A parameter identification technique for metal-oxide surge arrester models
IEEE Transactions on Power Delivery, 2002Summary form only given, as follows. A simple numerical technique to identify the parameters of metal-oxide arrester models is described. Using measured arrester voltage obtained under impulse test condition, the arrester parameters are determined using an optimization technique. The validity and the accuracy of the model are then assessed by comparing
S Birlasekaran, S S Choi
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A comparative analysis of metal-oxide surge arrester
2017 International Conference on Energy, Communication, Data Analytics and Soft Computing (ICECDS), 2017In the present development, a metal-oxide surge arrester (MOSA) introduces an extremely non-linear characteristic sufficient to ground the surges like lightning strokes and other over voltages. Although a revolutionary work has been done in this particular field, the device still looks some insufficiencies.
Mihir N Velani
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A Wide-Range Model for Metal-Oxide Surge Arrester
IEEE Transactions on Power Delivery, 2018This paper presents an electric model of a metal-oxide surge arrester (MOSA). The proposed electric model accurately represents the MOSA in a wide range of frequencies and amplitudes. The model was developed and validated based on MOSA electrical behavior in each one of the three operating regions of the zinc-oxide (ZnO) surge arresters, and in a ...
Valdemir S Brito +2 more
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A New Parameter Estimation Algorithm for Metal Oxide Surge Arrester
Electric Power Components and Systems, 2011Abstract The modeling and exact determination of metal oxide surge arrester parameters are very important for arrester allocation, insulation coordination studies, and systems reliability calculations. In this article, a new method, which is a combination of particle swarm optimization and ant colony optimization methods, is proposed to obtain the ...
Gevork B Gharehpetian
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IEEE Transactions on Electrical Insulation, 1986
The MOSA (Metal Oxide Surge Arrestor) comprising ZnO non-linear elements has been taking the place of the conventional gapped arresters on a world-wide scale. The ZnO non-linear element was developed in Japan and the application for the surge arrester was also established in Japan for the first time.
M. Kobayashi +3 more
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The MOSA (Metal Oxide Surge Arrestor) comprising ZnO non-linear elements has been taking the place of the conventional gapped arresters on a world-wide scale. The ZnO non-linear element was developed in Japan and the application for the surge arrester was also established in Japan for the first time.
M. Kobayashi +3 more
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Pollution Performance Of Metal Oxide Surge arresters
TENCON '91. Region 10 International Conference on EC3-Energy, Computer, Communication and Control Systems, 2005A metal oxide surge arrester (MOSA) under the effect of conductive pollutants presents two problems namely the insulation performance of the porcelain housing which is more or less similar to insulators working under polluteted condition. Modelling of this type of problem has drawn considerable attention of the researchers and resultq have been ...
R.P. Singh, J.N. Sinha
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Evaluation of Surge Degradation of Metal Oxide Surge Arrester
IEEE Transactions on Power Apparatus and Systems, 1982The surge degradation of zinc oxide elements under a constant ac stress is investigated experimentally. The results are summed up in a set of formulae and figures from which the degradation of any given condition can be evaluated. The increase ratio of leakage current from the initial value is successfully sed as the indicator of degradation of ...
Y. Fujiwara +3 more
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Failure study of metal-oxide surge arresters
Electric Power Systems Research, 1999Abstract This paper presents field experiences with metal oxide varistor surge arresters (MOVAs). Observations on their breakdown mechanism are summarized. Results of laboratory and field study of several makes of MOVAs of different ratings used in electric transmission systems are presented.
Mohammad Akbar, Monir Ahmad
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