NDLI: A simple method to assess ice built-up severity in EHV substations

Content Provider	IEEE Xplore Digital Library
Author	Volat, C. Meghnefi, F. Farzaneh, M.
Copyright Year	2010
Description	Author affiliation: NSERC / Hydro-Quebec / UQAC Industrial Chair on Atmospheric Icing of Power Network Equipment (CIGELE), Université du Québec à Chicoutimi, Canada (Volat, C.; Meghnefi, F.; Farzaneh, M.)
Abstract	This paper presents a simple method to assess the severity of ice built-ups in EHV substations. The proposed method is based on the monitoring of the leakage current (LC) and the applied voltage of an EHV standard station insulator. By simply studying the LC evolution of several experimental tests, it was established that the evolution of a LC envelope is divided in two distinct periods where the transition between these two periods is clearly identified and is correlated with the bridging of the shed spacing by icicles. It was also observed that the duration of the first period is only dependent of the icing rate and is not influenced by the applied water conductivity. From these observations, it is possible to estimate the icing rate of an accumulation using specific tools like artificial neural networks (ANN). ANN is used to detect the onset of the ice accumulation with permits to calculate the duration of Period 1 and estimate the icing rate which is one of the most important characteristic of ice built-up severity.
Starting Page	282
Ending Page	285
File Size	457170
Page Count	4
File Format	PDF
ISBN	9781424482832
e-ISBN	9781424482863
DOI	10.1109/ICHVE.2010.5640810
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ice thickness Artificial neural networks Flashover Conductivity Insulators Leakage current
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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