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Issue:ISSN 1006-5539
          CN 51-1183/TE


Your Position :Home->Past Journals Catalog->2019 Vol.1

Hazard Identification of HVDC Grounding Pole to Oil & Gas Pipeline
Author of the article:Mao Jian1, Cao Guofei1, Tang Jianping2, Ding Jiangqiang1, Gu Qinglin1, Jiang Yongtao1, Wang Tangyu2, Yao Qingyong2
Author's Workplace:1. PetroChina West-to-East Gas Pipeline Company; 2. China Petroleum Engineering & Construction Corp. Southwest Company
Key Words: High voltage direct current (HVDC); Grounding pole; Oil and gas pipeline; Hazard identification

Oil and gas transportation pipeline is the energy artery of social development and it is of momentous significance to ensure the pipeline operates safely.Based on the measured data of HVDC grounding electrode discharge, this paper systematically identifies the hazard brought by HVDC grounding electrode discharge to oil and gas transportation pipeline.The two main factors that affect the hazard include the degree of electrical interference suffered by pipelines and the tolerance of pipeline system. The hazard can be summarized as pipe damage, corrosion protection layer stripping, drain ablation and excessive consumption of grounding materials, valve chamber process equipment ablation, lightning protection ablation, insulation joint breakdown and inner wall corrosion, cathodic protection equipment ablation, transformer dc magnetic bias and electric shock.It is suggested to adopt equipment and facilities with good tolerance, and control the interference intensity of HVDC grounding electrode discharge from the source,evaluate the risk caused by HVDC grounding and take protective measures corresponding to the interference degree to ensure the pipeline operate safely.

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