Research on the Impact of 30 mA Leakage Current on the Atmospheric Corrosion of Transmission Lines

doi:10.11930/j.issn.1004-9649.201608023

Abstract

Abstract: In order to study the corrosion behavior of transmission line under 30 mA leakage current, in this paper, the corrosion weightlessness of metallic materials under different SO₂ concentrations and different leakage currents is analyzed. When SO₂ concentration is relatively low, the effect of leakage current on corrosive weightlessness is not obvious; when SO₂ concentration is relatively high, leakage current will expedite the corrosion of metallic material and more metastable γ-FeOOH will accumulate on the surface. When γ-FeOOH accumulates to a certain extent, parts of it will convert to relatively stable α-FeOOH and Fe₃O₄ and the corrosion is mitigated by the stable products, which improves the corrosion resistance of samples.

Key words: transmission line, leakage current, atmospheric corrosion, metallic materials, SO2 content

CLC Number:

TM752⁺.5

LUO Guoming, MAO Xiaopo, ZHANG Yu, LU Jinpei, ZHOU Junyu, CAO Xiangwei, ZONG Yun. Research on the Impact of 30 mA Leakage Current on the Atmospheric Corrosion of Transmission Lines[J]. Electric Power, 2017, 50(12): 125-129.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201608023

https://www.electricpower.com.cn/EN/Y2017/V50/I12/125

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