工程科学学报.第43卷.第11期：1560-1568.2021年11月 Chinese Journal of Engineering,Vol.43,No.11:1560-1568,November 2021 https://doi.org/10.13374/j.issn2095-9389.2020.06.02.002;http://cje.ustb.edu.cn 高压直流干扰大幅值管地电位产生原因 及影响因素分析 袁洵，杜艳霞四，梁毅，秦润之 北京科技大学新材料技术研究院，北京100083 ☒通信作者.E-mail:duyanxia@ustb.edu.cn 摘要基于实际的工程参数建立了高压直流干扰电场计算模型，利用数值模拟计算技术对高压直流干扰大幅值管地电位 的产生原因进行探究.考察接地极与管道之间的间距、管道防腐层类型、管道长度及土壤结构等因素对高压直流干扰下管地 电位的影响规律，得到高压直流干扰大幅值管地电位是在接地极与管道距离较近、防腐层的绝缘性能较高、管道长度较大及 上低下高的土壤电阻率分层结构共同作用下产生的. 关键词高压直流干扰：大幅值管地电位：产生原因：影响因素：模拟计算 分类号TG142.71 Causes of high amplitude of pipe-to-soil potential under HVDC interference and influencing factors YUAN Xun..DU Yan-xia°，LIANG Yi,QNRn-zhi Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China Corresponding author,E-mail:duyanxia@ustb.edu.cn ABSTRACT Since the 1950s,international studies have confirmed the technical advantages of high-voltage direct current(HVDC) transmission projects,such as large capacity,low loss,and high stability.In recent years,due to the reverse distribution of energy demand and resources in China,large-scale long-distance transportation of energy is inevitable.HVDC is especially suitable for large- scale transmission projects such as "west to east power transmission"and "north to south power transmission."Therefore,a number of HVDC projects have been built in China since the 1980s.However,with the large-scale construction of HVDC transmission projects,the interference effect of HVDC grounding electrode on metal facilities is increasingly prominent,in which the buried pipeline will produce high amplitude of pipe-to-soil potential under HVDC interference.As a result,HVDC interference can cause damage to pipelines, personnel,and related equipment.However,there is no systematic analysis of the causes of high amplitude of pipe-to-soil potential at home and at abroad.Based on the actual engineering parameters,this paper established a calculation model of the high-voltage direct current interference electric field on the buried pipeline and a numerical simulation technology was used to explore the causes of the high amplitude of pipe-to-soil potential under HVDC interference.Moreover,the influence of the distance between the grounding electrode and the pipeline,the type of anti-corrosion coating,the length of the pipeline,and the soil structure on the pipe ground potential under HVDC interference was investigated.Results reveal that the high amplitude of pipe-to-soil potential under HVDC interference is under the joint action of the short distance between the grounding electrode and the pipeline,the high insulation performance of the anti- corrosion layer,the large length of the pipeline,and the soil layered structure with low resistivity at upper and high resistivity at lower. KEY WORDS HVDC;high amplitude of pipe-to-soil potential;causes;influencing factors;simulation calculation 收稿日期：2020-06-02 基金项目：国家重点研发计划资助项目(2016YFC0802101)高压直流干扰大幅值管地电位产生原因 及影响因素分析 袁    洵，杜艳霞苣，梁    毅，秦润之 北京科技大学新材料技术研究院，北京 100083 苣通信作者， E-mail：duyanxia@ustb.edu.cn 摘    要    基于实际的工程参数建立了高压直流干扰电场计算模型，利用数值模拟计算技术对高压直流干扰大幅值管地电位 的产生原因进行探究. 考察接地极与管道之间的间距、管道防腐层类型、管道长度及土壤结构等因素对高压直流干扰下管地 电位的影响规律，得到高压直流干扰大幅值管地电位是在接地极与管道距离较近、防腐层的绝缘性能较高、管道长度较大及 上低下高的土壤电阻率分层结构共同作用下产生的. 关键词    高压直流干扰；大幅值管地电位；产生原因；影响因素；模拟计算 分类号    TG142.71 Causes  of  high  amplitude  of  pipe-to-soil  potential  under  HVDC  interference  and influencing factors YUAN Xun，DU Yan-xia苣 ，LIANG Yi，QIN Run-zhi Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China 苣 Corresponding author, E-mail: duyanxia@ustb.edu.cn ABSTRACT    Since the 1950s, international studies have confirmed the technical advantages of high-voltage direct current (HVDC) transmission  projects,  such  as  large  capacity,  low  loss,  and  high  stability.  In  recent  years,  due  to  the  reverse  distribution  of  energy demand and resources in China, large-scale long-distance transportation of energy is inevitable. HVDC is especially suitable for large￾scale transmission projects such as “west to east power transmission” and “north to south power transmission.” Therefore, a number of HVDC projects have been built in China since the 1980s. However, with the large-scale construction of HVDC transmission projects, the interference effect of HVDC grounding electrode on metal facilities is increasingly prominent, in which the buried pipeline will produce high  amplitude  of  pipe-to-soil  potential  under  HVDC  interference.  As  a  result,  HVDC  interference  can  cause  damage  to  pipelines, personnel, and related equipment. However, there is no systematic analysis of the causes of high amplitude of pipe-to-soil potential at home and at abroad. Based on the actual engineering parameters, this paper established a calculation model of the high-voltage direct current interference electric field on the buried pipeline and a numerical simulation technology was used to explore the causes of the high amplitude of pipe-to-soil potential under HVDC interference. Moreover, the influence of the distance between the grounding electrode and the pipeline, the type of anti-corrosion coating, the length of the pipeline, and the soil structure on the pipe ground potential under HVDC interference was investigated. Results reveal that the high amplitude of pipe-to-soil potential under HVDC interference is under the  joint  action  of  the  short  distance  between  the  grounding  electrode  and  the  pipeline,  the  high  insulation  performance  of  the  anti￾corrosion layer, the large length of the pipeline, and the soil layered structure with low resistivity at upper and high resistivity at lower. KEY WORDS    HVDC；high amplitude of pipe-to-soil potential；causes；influencing factors；simulation calculation 收稿日期: 2020−06−02 基金项目: 国家重点研发计划资助项目（2016YFC0802101） 工程科学学报，第 43 卷，第 11 期：1560−1568，2021 年 11 月 Chinese Journal of Engineering, Vol. 43, No. 11: 1560−1568, November 2021 https://doi.org/10.13374/j.issn2095-9389.2020.06.02.002; http://cje.ustb.edu.cn