You are in:Home/Publications/Influence of Contamination Constituents on Flashover Performance of HV Outdoor Insulators in Egypt

Prof. Mohamed Anwar Abou El Ata :: Publications:

Influence of Contamination Constituents on Flashover Performance of HV Outdoor Insulators in Egypt
Authors: MA Abouelsaad; MA Abouelatta; B Arafa; ME Ibrahim
Year: 2014
Keywords: Not Available
Journal: Middle-East Power Systems Conference (MEPCON'2014)
Volume: Not Available
Issue: Not Available
Pages: Not Available
Publisher: Not Available
Local/International: International
Paper Link: Not Available
Full paper Mohamed Anwar Abou El Ata_5.pdf
Supplementary materials Not Available

Contamination on outdoor insulators enhances the chances of flashover and can lead to transmission line outages and reduced system reliability. In practice, various contaminant types, usually classified as soluble and insoluble, settle on outdoor insulators and increase the possibility of flashover. The paper presents an assessment of the flashover performance of such insulators in Egypt; in view of the nature and composition of contaminants accumulated on their surfaces. To quantify these contaminants, numerous samples are gathered from different regions of the country and subjected to a comprehensive chemical analysis at the scale analysis laboratory of the Egyptian Electricity Transmission Company. Measurements of equivalent salt deposition density (ESDD) surface conductivity (SC), maximum leakage current (MLC) and flashover voltage (FOV) were conducted and correlated to the contamination constituents. The study utilized IEC standard cap-pin suspension insulators which were hanged in regions of different pollution levels and nature. Regression models for predicting the flashover voltage as related to ESDD and MLC as related to surface conductivity were developed. The models are validated through statistical analysis as well as comparison with measured data. The results from this work are useful for utilities to take adequate measures to improve the efficiency of their transmission systems through scheduling of their insulator maintenance strategy and selecting the appropriate insulator design for different system voltages and regions.

Google ScholarAcdemia.eduResearch GateLinkedinFacebookTwitterGoogle PlusYoutubeWordpressInstagramMendeleyZoteroEvernoteORCIDScopus