Corrosion Status, Corrosion Mechanisms and Anti-corrosion Measures in Coastal Substations

doi:10.11902/1005.4537.2020.155

Journal of Chinese Society for Corrosion and protection

2021, Vol. 41

Issue (5): 697-704 DOI: 10.11902/1005.4537.2020.155

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Corrosion Status, Corrosion Mechanisms and Anti-corrosion Measures in Coastal Substations

XIA Xiaojian¹, CAI Jianbin¹, LIN Deyuan¹, WAN Xinyuan¹, LI Yangsen², ZHANG Biaohua³, CHEN Yunxiang¹, HAN Jiceng¹, ZOU Zhimin⁴, JIANG Chunhai⁴(

)

^1.State Grid Fujian Electric Power Research Institute, Fuzhou 350007, China
^2.State Grid Fujian Electric Power Corporation, Fuzhou 350001, China
^3.Fujian Power Construction Engineering Co. Ltd. , Fujian Electric Power Commissioning Branch, Fuzhou 350007, China
^4.Fujian Key Laboratory of Functional Materials and Applications, Xiamen University of Technology, Xiamen 361024, China

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Abstract

The atmospheric corrosion status of major metallic equipment used in transformer substations in coastal areas, the relevant corrosion mechanisms and the current anti-corrosion measures are summarized based on on-site inspections and literature survey. It is revealedthat the corrosion of metallic equipment is intimately correlated to the high Cl^-, SO₂ and H₂S concentrations in the atmosphere of coastal areas. The combination of various anti-corrosion technologies, including material modification, surface treatment and anti-corrosion coatings, may maximize the comprehensive anti-corrosion effect.

Key words: substations in coastal area metal corrosion anti-corrosion measure atmospheric corrosion

Received: 28 August 2020

ZTFLH:

TG172

Fund: Science and Technology Project of State Grid Fujian Electric Power Corporation(521304190001)

Corresponding Authors: JIANG Chunhai E-mail: chjiang@xmut.edu.cn

About author: JIANG Chunhai, E-mail: chjiang@xmut.edu.cn

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	Xiaojian XIA
	Jianbin CAI
	Deyuan LIN
	Xinyuan WAN
	Yangsen LI
	Biaohua ZHANG
	Yunxiang CHEN
	Jiceng HAN
	Zhimin ZOU
	Chunhai JIANG

Cite this article:

XIA Xiaojian, CAI Jianbin, LIN Deyuan, WAN Xinyuan, LI Yangsen, ZHANG Biaohua, CHEN Yunxiang, HAN Jiceng, ZOU Zhimin, JIANG Chunhai. Corrosion Status, Corrosion Mechanisms and Anti-corrosion Measures in Coastal Substations. Journal of Chinese Society for Corrosion and protection, 2021, 41(5): 697-704.

URL:

https://www.jcscp.org/EN/10.11902/1005.4537.2020.155 OR https://www.jcscp.org/EN/Y2021/V41/I5/697

Fig.1 Corrosion morphologies of GIS in coastal industrial area: (a) aluminum cap, (b) triangle box of SF₆ circuit breaker made by cast aluminum, (c) pressure relief membrane of SF₆ current transformer made by aluminum, (d) connector holder for density relay

Fig.2 Corrosion of the surface (a) and seal (b~d) of an insulator flange

Fig.3 Corrosion in coastal substations: (a) steel surface, (b) a fractured spring, (c) identification cards, (d) aluminum alloy conductors

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