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[1]曹方圆,白锋.直流接地极电流干扰下埋地金属管道防护距离影响因素研究[J].高压电器,2019,55(05):136-143.[doi:DOI:10.13296/j.1001-1609.hva.2019.05.022]
 CAO Fangyuan,BAI Feng.Study on Influencing Factors on Buried Metal Pipeline Protective Distance Under DC Grounding Electrode Interference[J].High Voltage Apparatus,2019,55(05):136-143.[doi:DOI:10.13296/j.1001-1609.hva.2019.05.022]
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直流接地极电流干扰下埋地金属管道防护距离影响因素研究()
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《高压电器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第55卷
期数:
2019年05期
页码:
136-143
栏目:
研究与分析
出版日期:
2019-05-20

文章信息/Info

Title:
Study on Influencing Factors on Buried Metal Pipeline Protective Distance Under DC Grounding Electrode Interference
作者:
曹方圆 白锋
(中国电力科学研究院有限公司,?#26412;?00192)
Author(s):
CAO FangyuanBAI Feng
(China Electric Power Research Institute,Beijing 100192,China)
关键词:
接地极埋地金属管道直流干扰腐蚀防护距离
Keywords:
grounding electrodeburied metal pipelineDC interferencecorrosionprotective distance
DOI:
DOI:10.13296/j.1001-1609.hva.2019.05.022
摘要:
随着直流输电工程建设?#30446;?#36895;发展及直流输电工程与埋地金属管道相邻不断增多,接地极极址的选 择变得越来越困?#36873;?#25509;地极对管道直流腐蚀影响的程度不仅与接地极电流和接近距离有关,还与土壤电阻 率、土壤pH值和管道防腐层类型有关。文中在管道电路模型的基础上,建立了考虑管道极化效应的电路模 型。通过文中计算方法的计算结果与CDEGS计算结果的对比,验证了文中算法的正确性。获得了典型设计 参数下接地极与埋地金属管道?#30446;?#20379;工程参考的防护距离,分析了土壤电阻率、土壤pH值、管道防腐层类型 对接地极电流干扰下管道防护距离的影响。土壤电阻率和管道防腐层类型对管道防护距离影响较大,土壤 pH值几乎不改变管道的防护距离。
Abstract:
With the rapid development of HVDC transmission project construction,more and more DC transmission projects adjacent to buried metal pipeline. The choice of grounding electrode location becomes more and more diffi? cult. The degree of corrosion influence of grounding electrode on pipelines is not only related to grounding electrode current and distance,but also to soil resistivity,soil pH value and type of pipeline coating. On the basis of the pipe? line circuit model,this paper establishes a circuit model considering the polarization effect of pipeline. Compared the calculated results with CDEGS,the circuit model and calculation method is proved to be correct. The engineer? ing reference protective distance between grounding electrode and buried metal pipeline under typical design param? eters is obtained. The influence of soil resistivity,soil pH value and type of pipeline coating on pipeline protective distance under the interference of grounding electrode current is analyzed. Soil resistivity and type of pipeline coat? ing have great influence on pipeline protective distance,and pH value of soil almost does not change the protective distance of pipelines.

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备注/Memo

备注/Memo:
收稿日期:2018?12?01; 修回日期:2019?02?02 基金项目:国家电网公?#31350;?#25216;项目资助(高压直流接地极系统对金属管道的影响与防护研究)。 Project Supported by State Grid Corporation Headquarters Science and Technology Project(Research on the Impact and Protection of HVDC Grounding Electrode System on Metal Pipelines).曹方圆(1993—),男,硕士,工程师,主要研究方向为电力 系统电磁环?#22330;?白锋(1981—),男,硕士,高级工程师,主要研究方向为 电力系统电磁环?#22330;?/span>
更新日期/Last Update: 2019-05-20
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