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Long‐Term Field Test of Polymer Insulator on 77‐kV Transmission Line
Author(s) -
Tanaka Nobuya,
Kuroyagi Toshiyuki,
Niihara Sadao
Publication year - 2011
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.21068
Subject(s) - insulator (electricity) , electric power transmission , materials science , power transmission , electrical engineering , transmission line , accelerated aging , voltage , high voltage , ceramic , polymer , forensic engineering , composite material , engineering physics , power (physics) , engineering , physics , quantum mechanics
As an antivandalism measure, polymer insulators, which are light and show good performance with regard to contamination withstand voltage, have already been adopted for many new power transmission lines, mainly in the United States. However, they are subject to aging deterioration promoted by ultraviolet rays, ozone, leakage currents, and partial discharge, because polymer insulators are made of organic materials. It is important that we understand the characteristics of aging deterioration in order to maintain power transmission lines. Since polymer insulators for power transmission lines are more expensive than ceramic ones, they are little used in Japan, and there are no field data. In this study, we installed polymer insulators on a 77‐kV power transmission line, carried out field testing for 9 years, from 1997 to 2006, and investigated the electrical and mechanical characteristics of the insulators. © 2011 Wiley Periodicals, Inc. Electr Eng Jpn, 175(3): 20–26, 2011; Published online in Wiley Online Library ( wileyonlinelibrary.com ). DOI 10.1002/eej.21068