南方电网技术2024，Vol.18Issue(6)：29-35,7.DOI:10.13648/j.cnki.issn1674-0629.2024.06.004
复杂土壤条件高压直流接地极与埋地油气管道防护距离研究
Study on Protection Distance Between HVDC Grounding Electrode and Buried Oil and Gas Pipeline Under Complex Soil Conditions
摘要
Abstract
In order to ensure the safety of the persons near the buried pipelines,the current interference of HVDC grounding electrode to buried pipelines and its personal safety distance are investigated.Firstly,CDEGS simulation software is used to establish the interference model of buried pipeline by HVDC grounding electrode,and the main factors affecting the safety distance are screened.Secondly,the safe distances of buried pipeline in different uniform soil and multilayer complex soil are studied.Finally,the safety distance conversion relationship between uniform soil and complex soil is established.A method is proposed to obtain complex soil safety distance by using maximum pipelines ground potential and utilization coefficient correction.The research results show that soil resistivity has the greatest influence on the safety distance.If the safety distance of uniform soil is less than 8 km,the safety distance of complex soil can be obtained by using a correction coefficient of 0.85.If the uniform soil safe distance is between 8 km and 12 km,the relationship between the correction coefficient and the safety distance of uniform soil satisfies power function.If the safety distance of uniform soil is greater than 12 km,a correction coefficient of 0.53 is recommended.This proposed method can provide reference for the design of HVDC grounding electrode and pipeline,and also for the site selection of HVDC grounding electrode in future.关键词
高压直流接地极/埋地管道/土壤电阻率/安全距离/均匀土壤/复杂土壤Key words
HVDC grounding electrode/buried pipeline/soil resistivity/safety distance/uniform soil/complex soil分类
动力与电气工程引用本文复制引用
胡上茂,吴泳聪,刘刚,屈路,贾磊,蔡汉生..复杂土壤条件高压直流接地极与埋地油气管道防护距离研究[J].南方电网技术,2024,18(6):29-35,7.基金项目
国家自然科学基金资助项目(5227070484) （5227070484）
中国南方电网有限责任公司科技项目(CGYKLXM20190489). Supported by the National Natural Science Foundation of China(5227070484) （CGYKLXM20190489）
the Science and Technology Project of China Southern Power Grid Co.,Ltd.(CGYKLXM20190489). （CGYKLXM20190489）
