抑制运行V串直流瓷绝缘子铁帽电解腐蚀的马蹄形锌环设计

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Abstract Recent years, Chusui, Fufeng, Tianguang, Gaozhao, Xing’an and other. HVDC transmission lines appeared electrolytic corrosion phenomenon in China. The validity of U-shaped zinc ring to restrain caps’ electrolytic corrosion is tested and verified in this paper. The influence of zinc ring size on inhibitory effect was researched with accelerated electrolytic corrosion tests, and the reason that size zinc rings with the same size had different inhibitory effects on different tonnage insulators is explained from the view of caps’ curvature radius and water pocket characteristics. Test results indicate that the installation of U-shaped zinc ring is useful to the caps’ electrolytic corrosion. The inhibitory effect of zinc rings with the same size on larger caps curvature radius insulator is better than smaller ones. The proposed U-shaped zinc ring size and operation life is given in this paper.

Key words： DC porcelain insulator caps electrolytic corrosion U-shaped zinc ring structure and size design

Received: 15 September 2013 Published: 14 April 2015

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TM854

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	Articles by authors
	Luo Ling
	Zhang Fuzeng
	Li Ruihai
	Wang Liming
	Guan Zhicheng
	Li Licheng

Cite this article:

Luo Ling,Zhang Fuzeng,Li Ruihai等. Design for U-Shaped Zinc Ring to Restrain Electrolytic Corrosion of V-String Ceramic Insulators’ Caps for DC System[J]. Transactions of China Electrotechnical Society, 2015, 30(2): 220-228.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I2/220

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