Evaluation of Impressed Potential on Buried Pipelines Near HVDC Grounding Electrodes Considering the Polarization Effect

Bo Zhang; Fangyuan Cao; Xiaobo Meng

doi:10.17775/CSEEJPES.2020.05870

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Evaluation of Impressed Potential on Buried Pipelines Near HVDC Grounding Electrodes Considering the Polarization Effect

Regular Papers | 更新时间：2026-10-15

- Evaluation of Impressed Potential on Buried Pipelines Near HVDC Grounding Electrodes Considering the Polarization Effect
- CSEE Journal of Power and Energy Systems Vol. 10, Issue 6, Pages: 2667-2674(2024)
- 作者机构：
  
  1. Department of Electrical Engineering, State Key Lab of Power System, Tsinghua University,Beijing,China
  2. Department of Mechanical and Electrical Engineering, Guangzhou University,Guangzhou,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2020.05870
  CLC：
- Published：01 November 2024
- 稿件说明：
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Bo Zhang, Fangyuan Cao, Xiaobo Meng. Evaluation of Impressed Potential on Buried Pipelines Near HVDC Grounding Electrodes Considering the Polarization Effect[J]. CSEE Journal of Power and Energy Systems, 2024, 10(6): 2667-2674.
DOI：

Bo Zhang, Fangyuan Cao, Xiaobo Meng. Evaluation of Impressed Potential on Buried Pipelines Near HVDC Grounding Electrodes Considering the Polarization Effect[J]. CSEE Journal of Power and Energy Systems, 2024, 10(6): 2667-2674. DOI： 10.17775/CSEEJPES.2020.05870.

摘要

Abstract

When a long distance HVDC transmission system discharges current into the earth through its grounding electrode

ground potential differences appear in a large area. And therefore part of the DC current may flow into nearby pipelines which may be dangerous to the equipment and personnel

and may aggravate corrosion. In this paper

an equivalent circuit based on the method of moments is introduced to calculate the current and potential distributions along a pipeline with damaged anticorrosive coating. The current-dependent electrochemical polarization potential between soil and the metal pipe

due to the damage of the anticorrosive coating

is taken into account by using the Newton-Raphson scheme. The circuit is verified through a reduced scale experiment. By examining the circuit

the effect of the damaged anticorrosive coating on the leakage current and the pipe potential with respect to soil along the pipeline is analyzed.

关键词

Keywords

references

16. BEASY Software and Services. Cathodic Protection Simulation . Southampton, UK. : CM BEASY Ltd, [Online ] . Available: http://www.beasy.com/cathodic-protection.html.

22. Safe Engineering Services technologies ltd. , Quebec, Canada, [Online ] . Available: https://www.sestech.com/en/Product/Package/MultiGroundZ.

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