Numerical Simulation of Distribution Law of Cathodic and Anodic Areas of Pipeline under HVDC Interference

WANG Jun, XU Haohao, LI Xiang, ZHANG Xiang, LI Hanqiu, WANG Ximing

doi:10.16577/j.issn.1001-1560.2022.0280

Materials Protection >

2022 , Vol. 55 >Issue 10: 82 - 87

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0280

Numerical Simulation of Distribution Law of Cathodic and Anodic Areas of Pipeline under HVDC Interference

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(1.Zhejiang Energy R&D Institute Co.,Ltd.,Hangzhou 311121,China;2.Key Laboratory of Energy Efficiency and Pollutant Control Technology for Thermal Power Generation of Zhejiang Province,Hangzhou 311121,China;3.Zhejiang Zhenergy Gas Operation Co.,Ltd.,Hangzhou 310000,China)

Received date: 2022-04-25

Revised date: 2022-05-17

Accepted date: 2022-06-21

Online published: 2023-12-23

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Abstract

In order to study the influence rule of HVDC grounding electrode interference on the cathodic area and anodic area of the pipeline systematically,the Zheneng Jinliwen pipeline was taken as the research object to establish a HVDC interference model using CatPro software based on the real soil structure.The pipe-to-ground current density was calculated under conditions involving different ground polarity,interference current and soil resistivity,and the ranges of the cathodic area and anodic area of the pipeline under such conditions were analyzed.Results showed that after the locations of the grounding electrode and the pipeline were determined,the demarcation point between the cathodic area and anodic area of the pipeline resulting from HVDC interference was fixed and not affected by external conditions.

Key words： DC stray current; HVDC interference; cathodic area; anodic area; pipe-to-ground current density

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WANG Jun, XU Haohao, LI Xiang, ZHANG Xiang, LI Hanqiu, WANG Ximing . Numerical Simulation of Distribution Law of Cathodic and Anodic Areas of Pipeline under HVDC Interference[J]. Materials Protection, 2022 , 55(10) : 82 -87 . DOI: 10.16577/j.issn.1001-1560.2022.0280

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