Study on Corrosion of Old 220kV Transmission Lines in Shanghai

Article Preview

Abstract:

To study the corrosion of old 220kV transmission lines especially conductor in Shanghai, methods as visual inspection andmetallographic analysis are used to conduct an experimental research on the atmospheric corrosion of old conductors. The appearances and metallographic structures of conductors in service are examined and their mechanical property indicators are analyzed.Based on the corrosion mechanism of aluminum and galvanized steel wires, the research on the corrosion of ACSR which has run for years concludes that the outer aluminum wires of the 220kV old conductors that have operated for years are more corroded than the inner wires and the resistivity exceeds the standards although there is no significant drop in the mechanical indicators. The results in this research can provide technical support and guidance for the life evaluation of old transmission lines in the country.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 1079-1080)

Pages:

522-527

Citation:

Online since:

December 2014

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2015 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] D.G. Havard. Aged ACSR Conductors - Part I - Testing Procedures for Conductorsand Line Items. Ontario Hydro, Toronto, Canada, IEEE (1991).

Google Scholar

[2] D.G. Havard. Aged ACSR Conductors - Part II - Prediction of Remaining Life. Ontario Hydro, Toronto, Canada, IEEE (1991).

Google Scholar

[3] Wang Changchun, and ZhengWenyuan. Case Studies on the Broken Strands of 220kV Overhead Wires. Electric Safety Technology, 7(10): 25-27(2005).

Google Scholar

[4] Lin Hong, and XiaolinLiusan. Anti-corrosion Measures and Development Status of Overhead Transmission Lines. Electric Power Construction, 1983 Vol. 6.

Google Scholar

[5] HaoJiangtao, Liu Nian and Xing Jinyu. Life Evaluation of Power Equipment. Sichuan Electric Power Technology, 2005, (1): 5-7.

Google Scholar

[6] GengGangqiang, Lin Jie and Liu Laijun, et al. Life Prediction System for Protective Coating of Steel Bridge. Journal of Chang'an University (Natural Science Edition), 2006, 26(5): 44-47.

Google Scholar