Mitigation of AC Interference on Oil and Gas Pipelines Due to Single-phase Earth Fault in AC Transmission Line
摘 要
交流输电线路发生单相接地故障时会对“公共走廊”内的油气管道产生严重的交流干扰,危害人身安全、管道涂层及管道相关设备。因此,有效的缓解技术对于减小油气管道的交流干扰,保证人身安全和管道完整性具有重要的意义。以东营某油气管道为模型,对交流输电线路单相接地故障下油气管道交流干扰进行了系统的分析,提出了故障点处阻性耦合交流干扰的最佳缓解线长度计算公式;阻性耦合交流干扰的可缓解范围以及在可缓解范围内其他区域实施缓解时为达到与故障点处缓解相似的缓解效果所需缓解线长度的估算公式;提出综合缓解感性和阻性耦合交流干扰时应充分考虑两者之间的相位差。
Abstract
AC interference on oil and gas pipelines near AC transmission line because of the single-phase earth fault of AC transmission line will threaten the personnel safety, the coating on pipelines and relevant facilities. Hence, effective mitigation techniques are required to reduce the risk of AC interference to the levels that are safe for the personnel and integrity of pipelines. Based on a practical common corridor in Dongying, China, AC interference on buried pipelines under the single-phase earth fault condition was analyzed systematically; the formulas for optimum length and mitigation area of mitigation wire for AC interference at fault site due to conductive coupling were presented. The formulas for required length of mitigation wire installed in other sites within the mitigation area were presented in order to ensure a similar mitigation effectiveness as the mitigation wire installed at the fault site. Moreover, the mitigation methodology considering phase difference between conductive coupled and inductive coupled AC voltages on buried pipelines was presented.
中图分类号 TG172.82 DOI 10.11973/fsyfh-201602017
所属栏目 应用技术
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收稿日期 2015/11/11
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备注(1982-),工程师,本科,从事油气工程的相关研究,
引用该论文: YANG Guang. Mitigation of AC Interference on Oil and Gas Pipelines Due to Single-phase Earth Fault in AC Transmission Line[J]. Corrosion & Protection, 2016, 37(2): 165
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参考文献
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【2】LICHTENSTEIN J. AC and lightning hazards on pipelines[J]. Materials Performance, 1992, 31(12): 19-21.
【3】DAWALIBI F P, SOUTHEY R D. Analysis of electrical interference from power lines to gas pipelines part I: computation methods[J]. IEEE Transactions on Power Delivery, 1989, 4(3): 1840-1846.
【4】LUCCA G. Two steps numerical method for calculating the AC interference from a faulty power line on nearby buried pipelines[J]. European Transactions on Electrical Power, 2011, 21(7): 2037-2052.
【5】CHRISTOFORIDIS G C, LABRIDIS D P, DOKOPOULOS P S. A hybrid method for calculating the inductive interference caused by fault power lines to nearby buried pipelines[J]. IEEE Transactions on Power Delivery, 2005, 20(2):1465-1473.
【6】CHRISTOFORIDIS G C, LABRIDIS D P, DOKOPOULOS P S. Inductive interference calculation on imperfect coated pipelines due to nearby fault parallel transmission lines[J]. Electric Power Systems Research, 2003, 66(2):139-148.
【7】WIHARTADY H, POPOV M, SLUIS L, et al. Modeling of short circuit fault arc in 150 kV system and its influence on the performance of distance protection[M]. Delft: Delft University of Technology, 2009.
【8】FRAZIER M J. Predicting pipeline damage from power line faults[C]//Corrosion 2001. Houston, Texas: NACE, 2001.
【9】SUNDE E D. Earth conduction effects in transmission system[M]. New York, USA: Dover Publ, 1968.
【10】NICHOLS P, HOLTSBAUM B, PARKER K, et al. CP interference course Manual[M]. [S.l.]: NACE International, 2006.
【11】LEE C H, MELIOPOULOS S. Comparison of touch and step voltages between IEEE Std 80 and IEC 479-1[J]. IEE Proceedings-Generation, Transmission and Distribution, 1999, 146(6):593-601.
【12】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, 32(2):17-20.
【13】DAWALIBI F P, SOUTHEY R D. Computer modeling of AC interference problems for the most cost-effective solutions[C]//Corrosion 1998. Houston, Texas: NACE, 1998.
【14】DABKOWSKI J. Methodologies for AC interference[C]//Corrosion 2003. Houston, Texas: NACE, 2003.
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