Research on the corrosion effect of the UHVDC ground electrode current on the metal pipelines

Wang, Zhigao; Wang, Wenjun; Wang, Fangqiang; Lan, Xinsheng; Geng, Zhi; Tian, Qianqian

doi:10.1109/icpre.2016.7871147

Cited by 4 publications

(2 citation statements)

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“…On the other hand, when high current flows out of ground, the pipe earth potential will offset positively. The steel dissolution reaction occurs in the pipeline, resulting in increased corrosion risk [18,22]. In addition, a large amount of current in the pipeline may also cause electric shock to the operator.…”

Section: Introductionmentioning

confidence: 99%

“…The incoming current is the output of the transmission line which can reach several kiloamperes in actual process [16]. The relatively large underground current will either cause corrosion or increase the risk of hydrogen embrittlement (HE) of the surrounding buried metal structures [17,18]. In recent years, a large number of cases of HVDC interference with buried pipelines had been reported in China and abroad.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen damage behaviour of X80 steel under high voltage direct current interference

Liu,

Bi,

Liu

et al. 2023

Materials Science and Technology

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In this paper, the hydrogen damage behaviour of X80 steel under HVDC interference was investigated at different sites and applying voltages. The effect of application of a sustained tensile load during the interference testing on the ductility of steel was also studied. It was found that the interference modestly but consistently reduced the elongation of the steel, with dimples still dominating on the fracture surfaces. Application of a sustained tensile load significantly reduced the ductility of the steel, resulting in cleavage fracture dominant on the fracture surfaces on these samples. It also clearly increased the yield strength of the steel. The test results were explained by hydrogen trapping at dislocations and their retardation effect on dislocation movement during the SSRT.

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Section: Introductionmentioning

confidence: 99%