高压直流瓷和玻璃绝缘子金属附件电解腐蚀试验方法

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Abstract In recent years,lots of porcelain and glass insulators on several HVDC transmission lines appeared hardware corrosion phenomena in China.The spray water method,the salt fog method,the electrolytic method,and the solid dirt layer method are used to carry out the corrosion tests for iron caps and pins of the insulators in this paper.Also,the equivalence and feasibility of those test methods are compared and analyzed.The spray water method and the salt fog method are proposed to research the electrolytic corrosion problem of hardware based on the comparison between the test results and the field corrosion.The conductivity and flow velocity of the solution are 8～10 mS/cm(20℃) and 8～10 L/h respectively while carrying on iron cap corrosion test with spray water method.For pin corrosion,these parameters are set as 2～3 mS/cm(20℃) and 2～3 L/h.The conductivity and flow velocity of the solution are 10～12 mS/cm(20℃) and 0.25～0.4 L/h per sprinkler for both iron cap and pin with salt fog method.

Key words： DC porcelain and glass insulator hardware electrolytic corrosion test method spray water method salt fog method

Received: 08 January 2015 Published: 22 May 2015

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	Luo Ling
	Zhang Fuzeng
	Wang Liming
	Mei Hongwei
	Guan Zhicheng
	Li Licheng

Cite this article:

Luo Ling,Zhang Fuzeng,Wang Liming等. Test Methods for Hardware Electrolytic Corrosion of Porcelain and Glass Insulators on HVDC Transmission Lines[J]. Transactions of China Electrotechnical Society, 2015, 30(9): 103-111.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I9/103

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