Evaluation of Impressed Potential on Buried Pipelines Near HVDC Grounding Electrodes Considering the Polarization Effect
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 agg...
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| Format: | Article |
| Language: | English |
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China electric power research institute
2024-01-01
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| Series: | CSEE Journal of Power and Energy Systems |
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| Online Access: | https://ieeexplore.ieee.org/document/9465820/ |
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| _version_ | 1846113859962667008 |
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| author | Bo Zhang Fangyuan Cao Xiaobo Meng |
| author_facet | Bo Zhang Fangyuan Cao Xiaobo Meng |
| author_sort | Bo Zhang |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-53e3cfa921ed4dd7b9ca55de8af6f062 |
| institution | Kabale University |
| issn | 2096-0042 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | China electric power research institute |
| record_format | Article |
| series | CSEE Journal of Power and Energy Systems |
| spelling | doaj-art-53e3cfa921ed4dd7b9ca55de8af6f0622024-12-21T00:02:20ZengChina electric power research instituteCSEE Journal of Power and Energy Systems2096-00422024-01-011062667267410.17775/CSEEJPES.2020.058709465820Evaluation of Impressed Potential on Buried Pipelines Near HVDC Grounding Electrodes Considering the Polarization EffectBo Zhang0Fangyuan Cao1Xiaobo Meng2Tsinghua University,State Key Lab of Power System,Department of Electrical Engineering,Beijing,China,100084Tsinghua University,State Key Lab of Power System,Department of Electrical Engineering,Beijing,China,100084Guangzhou University,Department of Mechanical and Electrical Engineering,Guangzhou,China,510080When 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.https://ieeexplore.ieee.org/document/9465820/Circuit modelingcorrosiongroundingHVDC Transmissionmoment methodspipeline |
| spellingShingle | Bo Zhang Fangyuan Cao Xiaobo Meng Evaluation of Impressed Potential on Buried Pipelines Near HVDC Grounding Electrodes Considering the Polarization Effect CSEE Journal of Power and Energy Systems Circuit modeling corrosion grounding HVDC Transmission moment methods pipeline |
| title | Evaluation of Impressed Potential on Buried Pipelines Near HVDC Grounding Electrodes Considering the Polarization Effect |
| title_full | Evaluation of Impressed Potential on Buried Pipelines Near HVDC Grounding Electrodes Considering the Polarization Effect |
| title_fullStr | Evaluation of Impressed Potential on Buried Pipelines Near HVDC Grounding Electrodes Considering the Polarization Effect |
| title_full_unstemmed | Evaluation of Impressed Potential on Buried Pipelines Near HVDC Grounding Electrodes Considering the Polarization Effect |
| title_short | Evaluation of Impressed Potential on Buried Pipelines Near HVDC Grounding Electrodes Considering the Polarization Effect |
| title_sort | evaluation of impressed potential on buried pipelines near hvdc grounding electrodes considering the polarization effect |
| topic | Circuit modeling corrosion grounding HVDC Transmission moment methods pipeline |
| url | https://ieeexplore.ieee.org/document/9465820/ |
| work_keys_str_mv | AT bozhang evaluationofimpressedpotentialonburiedpipelinesnearhvdcgroundingelectrodesconsideringthepolarizationeffect AT fangyuancao evaluationofimpressedpotentialonburiedpipelinesnearhvdcgroundingelectrodesconsideringthepolarizationeffect AT xiaobomeng evaluationofimpressedpotentialonburiedpipelinesnearhvdcgroundingelectrodesconsideringthepolarizationeffect |