NDLI: AC flashover performance for line post and pin post insulators in distribution 22 kV

Content Provider	IEEE Xplore Digital Library
Author	Thipprasert, W. Sritakeaw, P. Jirapong, P.
Copyright Year	2012
Description	Author affiliation: Department of Electrical Engineering, Faculty of Engineering, Chiang Mai University, Thailand (Jirapong, P.) \|\| Department of Electrical Engineering, Faculty of Engineering, Rajamangala University of Technology Lanna Chiang Rai, Thailand (Thipprasert, W.; Sritakeaw, P.)
Abstract	Electrical insulators in 22kV distribution system of the Provincial Electricity Authority (PEA) are mostly porcelain insulator types that consists of suspension, pin type, line post, and pin post insulators. The distribution lines will be polluted by industrial contaminants, salt fog or natural dust. Experience shows that pollution flashover is one of the main natural calamities harming and affecting the voltage stability and reliability of distribution system. This paper compares the test results obtained from artificial pollution tests according to IEC 60507 with line post type and pin post type insulators of medium system under same test conditions. The salt fog test results indicate that the pollution flashover performance of line post insulator is less than to 50 percent of wet power frequency withstand voltage at equivalent salt deposit density (ESDD) = 0.5 $mg/cm^{2}$ and the leakage current (LC) of line post insulator increased to 10.2 mA at ESDD = 0.5 $mg/cm^{2}$ at nominal voltage. In the experiment indicate that AC pollution flashover performance of pin post insulator has better than line post insulator in the serious pollution area.
Starting Page	464
Ending Page	468
File Size	773189
Page Count	5
File Format	PDF
ISBN	9781467309530
e-ISBN	9781467309547
DOI	10.1109/VPPC.2012.6422794
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-09
Publisher Place	Korea (South)
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Flashover Thermal pollution Reliability Power transformer insulation
Content Type	Text
Resource Type	Article

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