Performance Evaluation of Insulators Using Flashover Voltage and Leakage Current

Every few years, some samples of insulators should be taken from overhead lines to monitor their operational condition. Since most insulators are not installed in standard atmospheric conditions, their performance evaluation using flashover voltage needs a correction factor to obtain the real breakd...

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Bibliographic Details
Published in:Electric power components and systems 2013-01, Vol.41 (2), p.221-233
Main Authors: Samimi, Mohammad Hamed, Mostajabi, Amir Hossein, Ahmadi-Joneidi, Iman, Shayegani-Akmal, Amir Abbas, Mohseni, Hossein
Format: Article
Language:English
Subjects:
AC breakdown voltage
Electric currents
Electric power
Electric resistance
fast Fourier transform
humidity correction factor
Leakage
leakage current
Performance evaluation
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Summary:Every few years, some samples of insulators should be taken from overhead lines to monitor their operational condition. Since most insulators are not installed in standard atmospheric conditions, their performance evaluation using flashover voltage needs a correction factor to obtain the real breakdown voltage from test results. In this article, the validity of IEC spark over atmospheric correction factor for this purpose was studied. Moreover, the effect of pollution on the leakage current of silicone rubber insulators has been evaluated. Finally, the results have been analyzed to find appropriate correction factors and to discover the relationship between insulators' leakage current and their status.
ISSN:1532-5008
1532-5016
DOI:10.1080/15325008.2012.738354