南方电网技术2017，Vol.11Issue(9)：8-15,8.DOI:10.13648/j.cnki.issn1674-0629.2017.09.002
抑制直流接地极对管道影响的接地排流措施
Grounding Drainage Measures to Reduce Influence of DC Grounding Electrode on Pipeline
摘要
Abstract
With the rapid growth of energy demand in China, more and more DC transmission projects are adjacent to buried oil-gas pipeline, which leads to serious electromagnetic effects on buried metal pipeline.Focusing on the protection measures of pipeline, this paper establishes a circuit model based on the study of concentrated grounding device, sacrificial anode, forced cathode drainage meas-ures.Protective effect and regularities of these measures have been studied by simulation.Results show that concentrated grounding device of pipeline can reduce pipe-ground voltage of partial pipeline significantly, but its range of action is too small.Sacrificial anode has a palpable effect of reducing pipe-ground voltage as long distance buried pipeline.What's more, multipoint connection between sacrificial anode and pipe can obtain a better protection effect.The forced current cathodic drainage protection can also reduce the pipe-ground voltage.关键词
高压直流/接地极/管道/地中电流/排流措施/管地电压Key words
HVDC/grounding electrode/pipeline/ground current/drainage measures/pipe-ground voltage分类
信息技术与安全科学引用本文复制引用
廖永力,曹方圆,孟晓波,李锐海,张波..抑制直流接地极对管道影响的接地排流措施[J].南方电网技术,2017,11(9):8-15,8.基金项目
南方电网公司科技项目(CSGTRC-K153013).Foundation item:Supported by Science and Technology of China Southem Power Grid (CSGTRC-K153013). （CSGTRC-K153013）
