Title :
Flashover performance of 380 kV V-string with uniform surface pollution
Author :
Ilhan, Suat ; Ozdemir, A.
Author_Institution :
Dept. of Electr. Eng., Istanbul Tech. Univ., Istanbul, Turkey
Abstract :
This study presents uniform pollution effects on the flashover/withstand performance of 380 kV V-suspension strings composed of cap-and-pin type glass insulator units. The motivation behind the study is to investigate the reason of unexpected flashover problems in 380 kV National Electric Power Transmission System. Power frequency voltage tests and impulse voltage flashover tests were performed at Fuat Kulunk High Voltage Laboratory of Istanbul Technical University for clean insulators as well as for uniformly polluted ones. Flashover/withstand voltage levels, flashover paths and time-to-flashovers were determined of the clean and polluted insulator strings.
Keywords :
flashover; glass; insulators; pollution; suspensions; V-suspension strings; cap-and-pin type glass insulator; clean insulator; flashover problems; impulse voltage flashover tests; national electric power transmission system; power frequency voltage tests; uniform surface pollution; voltage 380 kV; Flashover; Insulators; Laboratories; Poles and towers; Pollution; Silicon; Surface contamination; Ac flashover; flashover performance; impulse withstand; insulator string; pollution;
Conference_Titel :
PowerTech, 2011 IEEE Trondheim
Conference_Location :
Trondheim
Print_ISBN :
978-1-4244-8419-5
Electronic_ISBN :
978-1-4244-8417-1
DOI :
10.1109/PTC.2011.6019290