750 kV输电线路运行时对临近埋地供水管线的电磁影响研究
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摘要
随着我国经济的快速发展,电力网络及供水管线均得到了极大的发展,两者往往平行敷设,输电线路会对平行敷设的临近埋地供水管线产生电磁影响,导致其对地电压升高、产生金属体交流腐蚀等。目前输电线路对供水管线电磁影响的相关研究还较少。基于新疆国信、信友电厂送出到芨芨湖750kV输电工程数据,仿真计算了该线路正常运行状况下对其平行敷设的供水管线的电磁影响,计算了沿线供水管线的最大对地电压分布,结果表明沿供水管线其电压分布呈现两端高中间低的特点,随土壤电阻率的增加电压值会有所升高。该算例工程满足相关标准对交流腐蚀及人身安全限值的要求。
With the rapid development of China' s economy, power network and water supply pipeline has been developed greatly. The two are often laid in parallel. The transmission line will have electromagnetic influence on the buried water supply pipelines laid in parallel,resulting in an increase in the ground voltage, producing metal body AC corrosion. At present, there are few studies on the electromagnetic influence of the transmission line on the water supply pipeline. Based on the data of Jijihu 750 kV transmission project sent by Xinjiang Guoxin and Xinyou power plant, the paper simulates and calculates the electromagnetic influence of the water supply pipelines laid in parallel under the normal operation condition of the line, as well as the maximum ground voltage distribution of the water supply pipelines along the line. The simulation result shows that the voltage distribution along the water supply pipeline is characterized by high at two ends and low at the middle. The voltage amplitude will increase with rising soil resistivity. It indicates that the maximum ground voltage meets the requirements of relevant standards for AC corrosion and personal safety limits for the project in this paper.
With the rapid development of China' s economy, power network and water supply pipeline has been developed greatly. The two are often laid in parallel. The transmission line will have electromagnetic influence on the buried water supply pipelines laid in parallel,resulting in an increase in the ground voltage, producing metal body AC corrosion. At present, there are few studies on the electromagnetic influence of the transmission line on the water supply pipeline. Based on the data of Jijihu 750 kV transmission project sent by Xinjiang Guoxin and Xinyou power plant, the paper simulates and calculates the electromagnetic influence of the water supply pipelines laid in parallel under the normal operation condition of the line, as well as the maximum ground voltage distribution of the water supply pipelines along the line. The simulation result shows that the voltage distribution along the water supply pipeline is characterized by high at two ends and low at the middle. The voltage amplitude will increase with rising soil resistivity. It indicates that the maximum ground voltage meets the requirements of relevant standards for AC corrosion and personal safety limits for the project in this paper.
引文
[1]郭剑,曹玉杰,胡士信,等.交流输电线路对输油输气管道电磁影响的限值[J].电网技术,2008,32(2):17-20.GUO Jian, CAO Yujie, HU Shixin, et al. Limit values of electromagnetic influence of adjacent AC transmission lines on oil/gas pipelines[J]. Power System Technology,2008,32(2):17-20.
[2]蒋俊.交流线路正常运行时对平行敷设油气管道的电磁影响[J].电网技术,2008,32(2):78-80.JIANG Jun. Electromagnetic influence of normally operating AC power transmission line on gas/oil pipeline parallel to transmission line[J]. Power System Technology,2008,32(2):78-80.
[3]齐磊,崔翔.特高压交流输电线路正常运行时对输油输气管道的感性耦合计算模型[J].中国电机工程学报,2010, 30(21):121-126.QI Lei, CUI Xiang. Inductive coupling modeling of operating UHV AC transmission line to adjacent oil/gas pipeline[J]. Proceedings of the CSEE, 2010,30(21):121-126.
[4]焦保利,谢辉春,张广洲,等.特高压交流架空线路与油气管道的防护间距[J].高电压技术,2009,35(8):1807-1811.JIAO Baoli, XIE Huichun, ZHANG Guangzhou, et al.Protection clearance between UHV AC overhead line and oil or gas pipe-lines[J]. High Voltage Engineering, 2009,35(8):1807-1811.
[5]迟兴和,张玉军.直流接地极与大地中金属管道的防护距离[J].电网技术,2008,32(2):1-5.CHI Xinghe, ZHANG Yujun. Protective distance between HVDC electrode and underground metal pipeline[J]. Power System Technology,2008,32(2):1-5.
[6]安宁,彭毅,艾宪仓,等.雷击超高压交流输电线路对埋地输油输气管道的电磁影响[J].高电压技术,2012,38(11):2881-2888.AN Ning, PENG Yi, AI Xiancang, et al. Electromagnetic effects on underground oil/gas pipeline of the lighting strike on EHV AC transmission line[J]. High Voltage Engineering,2012,38(11):2881-2888.
[7]谢辉春,宋晓兵.交流输电线路对埋地金属管道稳态干扰的影响规律[J].电网与清洁能源,2010,26(5):22-26.XIE Huichun, SONG Xiaobing. Influence of steady interference on buried metallic pipelines due to AC transmission lines[J]. Advances of Power System&Hydroelectric Engineering, 2010,26(5):22-26.
[8]中华人民共和国住房和城乡建设部.GB/T 50698—2011.埋地钢质管道交流干扰防护技术标准[S].北京:中国计划出版社,2011.
[9] NACE International standard practice. SP 0177—2014,Mitigation of alternating current and lightning effects onmetallic structures and corrosion[S]. Houston. 2014
[10]中国国家标准化管理委员会.GB 3805—2008,特低电压(ELV)限值[S].北京:中国标准出版社,2008.
[11]国家标准局.GB 6830—1986电信线路遭受强电线路危险影响的容许值[S].北京:中国标准出版社,1986.
[2]蒋俊.交流线路正常运行时对平行敷设油气管道的电磁影响[J].电网技术,2008,32(2):78-80.JIANG Jun. Electromagnetic influence of normally operating AC power transmission line on gas/oil pipeline parallel to transmission line[J]. Power System Technology,2008,32(2):78-80.
[3]齐磊,崔翔.特高压交流输电线路正常运行时对输油输气管道的感性耦合计算模型[J].中国电机工程学报,2010, 30(21):121-126.QI Lei, CUI Xiang. Inductive coupling modeling of operating UHV AC transmission line to adjacent oil/gas pipeline[J]. Proceedings of the CSEE, 2010,30(21):121-126.
[4]焦保利,谢辉春,张广洲,等.特高压交流架空线路与油气管道的防护间距[J].高电压技术,2009,35(8):1807-1811.JIAO Baoli, XIE Huichun, ZHANG Guangzhou, et al.Protection clearance between UHV AC overhead line and oil or gas pipe-lines[J]. High Voltage Engineering, 2009,35(8):1807-1811.
[5]迟兴和,张玉军.直流接地极与大地中金属管道的防护距离[J].电网技术,2008,32(2):1-5.CHI Xinghe, ZHANG Yujun. Protective distance between HVDC electrode and underground metal pipeline[J]. Power System Technology,2008,32(2):1-5.
[6]安宁,彭毅,艾宪仓,等.雷击超高压交流输电线路对埋地输油输气管道的电磁影响[J].高电压技术,2012,38(11):2881-2888.AN Ning, PENG Yi, AI Xiancang, et al. Electromagnetic effects on underground oil/gas pipeline of the lighting strike on EHV AC transmission line[J]. High Voltage Engineering,2012,38(11):2881-2888.
[7]谢辉春,宋晓兵.交流输电线路对埋地金属管道稳态干扰的影响规律[J].电网与清洁能源,2010,26(5):22-26.XIE Huichun, SONG Xiaobing. Influence of steady interference on buried metallic pipelines due to AC transmission lines[J]. Advances of Power System&Hydroelectric Engineering, 2010,26(5):22-26.
[8]中华人民共和国住房和城乡建设部.GB/T 50698—2011.埋地钢质管道交流干扰防护技术标准[S].北京:中国计划出版社,2011.
[9] NACE International standard practice. SP 0177—2014,Mitigation of alternating current and lightning effects onmetallic structures and corrosion[S]. Houston. 2014
[10]中国国家标准化管理委员会.GB 3805—2008,特低电压(ELV)限值[S].北京:中国标准出版社,2008.
[11]国家标准局.GB 6830—1986电信线路遭受强电线路危险影响的容许值[S].北京:中国标准出版社,1986.