特高压直流工程接地极对附近油气管线的影响研究
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摘要
特高压直流输电系统在单极大地或双极不平衡运行方式下产生的入地电流可能对附近油气管线产生腐蚀,其腐蚀程度与电流大小、时间长短、距离远近、土壤电阻率等因素有关。利用晋北—南京±800 kV特高压直流输电工程实测的土壤参数,通过仿真建模,分析计算了在设计寿命时间和实际工程接地极运行时间内,接地极电流对其附近石油管道的影响程度。计算结果与实测结果吻合,计算方法可以为后续工程接地极选址、影响程度预测等提供支撑。
The ground current generated in unipolar or unbalanced operation mode of UHVDC transmission system may corrode nearby oil and gas pipelines. The corrosion degree is related to current, time, distance, soil resistivity and so on. In this paper, the soil parameters measured in an actual ±800 kV UHVDC transmission project are used. Through simulation modeling, the influence degree of ground electrode current on nearby petroleum pipeline during design life time and grounding electrode operation time of the project is analyzed and calculated. The calculation result well coincides with experimental data, and the calculation method can provide support for site selection and influence prediction of subsequent projects.
The ground current generated in unipolar or unbalanced operation mode of UHVDC transmission system may corrode nearby oil and gas pipelines. The corrosion degree is related to current, time, distance, soil resistivity and so on. In this paper, the soil parameters measured in an actual ±800 kV UHVDC transmission project are used. Through simulation modeling, the influence degree of ground electrode current on nearby petroleum pipeline during design life time and grounding electrode operation time of the project is analyzed and calculated. The calculation result well coincides with experimental data, and the calculation method can provide support for site selection and influence prediction of subsequent projects.
引文
[1]赵婉君.高压直流输电工程技术(第三版)[M].北京:中国电力出版社,2013.
[2]Gong Y,Xue C,Yuan Z,et al.Advanced analysis of HVDCelectrodes interference on neighboring pipelines[J].Journal of Power and Energy Engineering,2015,3(4):332-341.
[3]应斌.高压直流输电系统接地极对长输管道安全运行的影响[J].油气田地面工程,2014,33(7):23-24.
[4]李振军.高压/特高压直流输电系统对埋地钢质管道干扰的现场测试与分析[J].腐蚀与防护,2017,38(2):142-146.Li Zhenjun.Field test and analysis of interference of high or ultra high voltage direct current transmission system to underground steel pipeline[J].Corrosion and Protection,2017,38(2):142-146(in Chinese).
[5]程明,张平.鱼龙岭接地极入地电流对西气东输二线埋地钢质管道的影响分析[J].天然气与石油,2010,28(5):22-26.Cheng Ming,Zhang Ping.Effect of Yulongling grounding current on buried steel pipeline of west-east gas pipeline 2[J].Natural Gas And Oil,2010,28(5):22-26(in Chinese).
[6]李兆玲.高压直流接地极对埋地管道的干扰与防护[J].管道技术与设备,2017(3):39-42.Li Zhaoling.Interference and protection on buried pipeline of high voltage direct current grounding electrode[J].Pipeline Technology and Equipment,2017(3):39-42(in Chinese).
[7]刘昌,孟晓波,樊灵孟,等.直流工程接地极入地电流对埋地金属管道的影响[J].南方电网技术,2015,9(3):15-20.Liu Chang,Meng Xiaobo,Fan Lingmeng,et al.Influence of ground return current from HVDC earthing electrode on buried metal pipeline[J].Southern Power System Technology,2015,9(3):15-20(in Chinese).
[8]程明,唐强,魏德军,等.高压直流接地极干扰区埋地钢质油气管道的综合防护[J].天然气工业,2015,35(9):105-111.Cheng Ming,Tang Qiang,Wei Dejun,et al.Comprehensive protection of buried steel pipelines at HVDC earthed electrode interference area[J].Natural Gas Industry,2015,35(9):105-111(in Chinese).
[9]曾连生.高压直流输电陆地接地极投计──接地极形状、尺寸和埋深的确定[J].电力建设,1994(2):12-17.
[10]刘振亚.特高压直流输电技术研究成果专辑[M].北京:中国电力出版社,2013.
[11]晋北-南京±800 k V直流输电工程接地极对周边环境的影响研究课题报告[R].北京:中国电力科学研究院,2017.
[12]晋北-南京±800 k V直流输电工程初步设计报告[R].杭州:浙江省电力设计院,2016.
[13]陕京一线天然气管道受特高压直流接地极干扰监测分析报告[R].北京:中国电力科学研究院,2017.
[14]DL/T 5224-2014,高压直流输电大地返回系统设计技术规程[S].国家能源局.
[15]IEC/TS 62344,高压直流接地极通用设计导则[S].2013.
[16]GB/T 21447-2008,钢制管道外腐蚀控制规程[S].2008.
[17]GB/T 50991-2014,埋地钢质管道直流干扰防护技术标准[S],2014.
[18]SY/T 0017-2006,埋地钢质管道直流排流保护技术标准[S].2016.
[19]SY/T0087.1-2006,钢制管道及储罐腐蚀评价标准[S].2006.
[20]ISO 15589-1,石油,石化和天然气工业阴极保护管道系统陆上管道[S].国际标准化组织.
[21]NACE SP 0169,埋地或水下金属管线系统外腐蚀控制标准[S].2013.
[22]高压直流输电大地返回运行系统设计技术规定(试行)[S].国网直流部,2014.
[2]Gong Y,Xue C,Yuan Z,et al.Advanced analysis of HVDCelectrodes interference on neighboring pipelines[J].Journal of Power and Energy Engineering,2015,3(4):332-341.
[3]应斌.高压直流输电系统接地极对长输管道安全运行的影响[J].油气田地面工程,2014,33(7):23-24.
[4]李振军.高压/特高压直流输电系统对埋地钢质管道干扰的现场测试与分析[J].腐蚀与防护,2017,38(2):142-146.Li Zhenjun.Field test and analysis of interference of high or ultra high voltage direct current transmission system to underground steel pipeline[J].Corrosion and Protection,2017,38(2):142-146(in Chinese).
[5]程明,张平.鱼龙岭接地极入地电流对西气东输二线埋地钢质管道的影响分析[J].天然气与石油,2010,28(5):22-26.Cheng Ming,Zhang Ping.Effect of Yulongling grounding current on buried steel pipeline of west-east gas pipeline 2[J].Natural Gas And Oil,2010,28(5):22-26(in Chinese).
[6]李兆玲.高压直流接地极对埋地管道的干扰与防护[J].管道技术与设备,2017(3):39-42.Li Zhaoling.Interference and protection on buried pipeline of high voltage direct current grounding electrode[J].Pipeline Technology and Equipment,2017(3):39-42(in Chinese).
[7]刘昌,孟晓波,樊灵孟,等.直流工程接地极入地电流对埋地金属管道的影响[J].南方电网技术,2015,9(3):15-20.Liu Chang,Meng Xiaobo,Fan Lingmeng,et al.Influence of ground return current from HVDC earthing electrode on buried metal pipeline[J].Southern Power System Technology,2015,9(3):15-20(in Chinese).
[8]程明,唐强,魏德军,等.高压直流接地极干扰区埋地钢质油气管道的综合防护[J].天然气工业,2015,35(9):105-111.Cheng Ming,Tang Qiang,Wei Dejun,et al.Comprehensive protection of buried steel pipelines at HVDC earthed electrode interference area[J].Natural Gas Industry,2015,35(9):105-111(in Chinese).
[9]曾连生.高压直流输电陆地接地极投计──接地极形状、尺寸和埋深的确定[J].电力建设,1994(2):12-17.
[10]刘振亚.特高压直流输电技术研究成果专辑[M].北京:中国电力出版社,2013.
[11]晋北-南京±800 k V直流输电工程接地极对周边环境的影响研究课题报告[R].北京:中国电力科学研究院,2017.
[12]晋北-南京±800 k V直流输电工程初步设计报告[R].杭州:浙江省电力设计院,2016.
[13]陕京一线天然气管道受特高压直流接地极干扰监测分析报告[R].北京:中国电力科学研究院,2017.
[14]DL/T 5224-2014,高压直流输电大地返回系统设计技术规程[S].国家能源局.
[15]IEC/TS 62344,高压直流接地极通用设计导则[S].2013.
[16]GB/T 21447-2008,钢制管道外腐蚀控制规程[S].2008.
[17]GB/T 50991-2014,埋地钢质管道直流干扰防护技术标准[S],2014.
[18]SY/T 0017-2006,埋地钢质管道直流排流保护技术标准[S].2016.
[19]SY/T0087.1-2006,钢制管道及储罐腐蚀评价标准[S].2006.
[20]ISO 15589-1,石油,石化和天然气工业阴极保护管道系统陆上管道[S].国际标准化组织.
[21]NACE SP 0169,埋地或水下金属管线系统外腐蚀控制标准[S].2013.
[22]高压直流输电大地返回运行系统设计技术规定(试行)[S].国网直流部,2014.