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Onsite MOSA condition Assessment-a new approach

A new method to assess the condition of metal-oxide surge arresters is presented. The fundamental component of the resistive current is used as an indicator. This current is obtained by exploiting the linear relationship, which exists between the peak value of the fundamental component of the resist...

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Published in:IEEE transactions on power delivery 2006-07, Vol.21 (3), p.1273-1277
Main Authors: Karawita, C., Raghuveer, M.R.
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Language:English
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Raghuveer, M.R.
description A new method to assess the condition of metal-oxide surge arresters is presented. The fundamental component of the resistive current is used as an indicator. This current is obtained by exploiting the linear relationship, which exists between the peak value of the fundamental component of the resistive current and the phase shift between the fundamental components of the capacitive current and the total arrester current. This relationship is independent of temperature for a given type of arrester. Results are presented to demonstrate the accuracy and the reliability of the new technique.
doi_str_mv 10.1109/TPWRD.2005.860264
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language eng
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source IEEE Electronic Library (IEL) Journals
subjects Aging
Applied sciences
Arresters
Connection and protection apparatus
Current measurement
Diagnostic indicator
Electrical engineering. Electrical power engineering
Electromagnetic measurements
Exact sciences and technology
Indicators
Metal oxides
metal-oxide surge arrester (MOSA)
Onsite
Partial discharges
Phase shift
Power system protection
Power system reliability
Probes
resistive current
Surge arresters
Surge protection
Voltage
title Onsite MOSA condition Assessment-a new approach
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