Alternating current interference from power transmission lines on nearby metallic pipelines has been a topic of research in the past years. Of particular interest is the induced voltage on metallic pipelines due to the time varying electromagnetic fields coupling from the transmission lines. Several related studies dealing with this problem have been published. Nevertheless, the issue of current phase shift variation and its effect on the voltage induced on metallic pipelines has not been fully covered yet. In view of this, we present the computation of the induced open circuit voltage on a buried metallic pipeline running in parallel with the power transmission lines in three Rand Water sites, South Africa. The computation was performed using Carson's relations and power system concepts of mutual impedances between two circuits. The variation in current phase shift was considered for six different phase conductor arrangements. The overall simulation results yield useful information. The computations show that the induced open circuit voltage changes significantly with different phase arrangements and with variations in the current phase shift between the two circuits. In this work, the characteristic nature of the variation in the induced open circuit voltage for the six phase arrangements and phase shifts are examined in more detail. We concluded that in placing buried pipelines in the vicinity of AC double-circuits power lines, it is essential to consider the phase arrangement of the line and current phase shift between the two circuits. These, together with other line parameters, are vital in evaluating the induced voltage with the pipe position before installation and for the design of effective AC mitigation techniques.
2. Shwehdi, M. H. and U. M. Johar, "Transmission line EMF interference with buried pipeline: Essential and cautions," Proceedings of the International Conference on Non-Ionizing Radiation at UNITEN (ICNIR2003) Electromagnetic Fields and Our Healt, 1-13, Kuala Lumpur, Malaysia, Oct. 20-22, 2003.
3. Hurley, W. G. and S. J. Croall, "Electromagnetic voltage induction and mitigation on passive conductors from overhead transmission lines," IEEE Transactions on Power Apparatus and Systems, Vol. 102, No. 7, 2341-2348, 1983.
4. Philip, D. S., "Overview of HVAC transmission line interference issue on buried pipeline," NACE Northern Area Western Conference (NACE), Alberta, Canada, Feb. 15-18, 2010.
5. Christoforidis, G. C., D. P. Labridis, and P. S. Dokopoulos, "Inductive interference calculation on imperfect coated pipelines due to nearby faulted parallel transmission lines," Electric Power Systems Research, Vol. 66, No. 2, 139-148, 2003.
6. Nelson, J. P., "Power systems in close proximity to pipelines," IEEE Transactions on Industry Applications, Vol. 1A-22, No. 3, 435-441, 1986.
7. Christoforidis, G. C., D. P. Labridis, and P. S. Dokopoulos, "Inductive interference on pipelines buried in multilayer soil due to magnetic fields from nearby faulted power lines," IEEE Transactions on Electromagnetic Compatibility, Vol. 47, No. 2, 254-262, 2005.
8. Orazem, M. E., "Underground pipeline corrosion: Detection, analysis and prevention," Woodhead Publishing Series in Metal and Surface Engineering, Chapter 2, 35-61, Woodhead Publishing, Elsevier, Cambridge, UK, 2014.
9. Adedeji, K. B., A. A. Ponnle, B. T. Abe, and A. A. Jimoh, "Analysis of the induced voltage on buried pipeline in the vicinity of high AC voltage overhead transmission lines," Proceedings of the 23rd Southern African Universities Power Engineering Conference (SAUPEC), 7-12, Johannesburg, Jan. 28-30, 2015.
10. Al Salameh, M. S. H. and M. A. S. Hassouna, "Arranging overhead power transmission line conductors using swarm intelligence technique to minimize electromagnetic fields," Progress In Electromagnetics Research B, Vol. 26, 213-236, 2010.
11. Tleis, A. D. N., "Power Systems Modelling and Fault Analysis: Theory and Practice," Newnes, Elsevier Ltd., 2008.
12. Jiang, Z., Y. Du, M. Lu, Y. Zhang, D. Tang, and L. Dong, "New findings on the factors accelerating AC corrosion of buried pipelines," Corrosion Science, Vol. 81, 1-10, 2014.
13. M'hamed, O., Z. Mourad, Z. Aicha, T. Omar, I. Rachid, B. Saida, and D. Cherif, "AC corrosion induced by HVTL on cathodically protected pipelines," Proceedings of International Conference on Control, Engineering and Information Technology (CEIT'14), 22-26, Sousse, Tunisia, Mar. 22-25, 2014.
14. Ouadah, M., O. Touhami, and R. Ibtiouen, "Diagnosis of the AC current densities effect on the cathodic protection performance of the steel x70 for a buried pipeline due to electromagnetic interference caused by HVPTL," Progress In Electromagnetics Research M, Vol. 45, 163-171, 2016.
15. Ouadah, M., O. Touhami, and R. Ibtiouen, "Diagnosis of AC corrosion on the buried pipeline due to the high voltage power line," Journal of Electrical Engineering, Vol. 16, 76-83, 2016.
16. CIGRE, "Guide on the influence of high voltage AC power systems on metallic pipelines," CIGRE Working Group 36.02, 1995.
17. NACE, "Mitigation of alternating current and lightning effects on metallic structures and corrosion control systems," NACE Report, No. 2021-56, 2007.
18. EN 50433, "Effect of electromagnetic interference on pipelines caused by high voltage AC railway systems and/or high voltage AC power supply system," CENELEC Report, No. ICS33.040.20:33.100.01, 2009.
19. Ponnle, A. A., K. B. Adedeji, B. T. Abe, and A. A. Jimoh, "Spatial magnetic field polarization below balanced double-circuit linear configured power lines for six phase arrangements," Proceedings of the ACEMP-OPTIM-ELECTROMOTION Joint Conference, 163-169, Side, Turkey, Sep. 2-4, 2015.
20. Mazzanti, G., "Current phase-shift effects in the calculation of magnetic fields generated by double- circuit overhead transmission lines," Proceedings of IEEE Power Engineering Society General Meeting, Denver, 1-6, Colorado, Jun. 6-10, 2004.
21. Mazzanti, G., "The role played by current phase shift on magnetic field established by AC double- circuit overhead transmission lines --- Part I: Static analysis," IEEE Transactions on Power Delivery, Vol. 21, No. 2, 939-948, 2006.
22. Mazzanti, G., "The role played by current phase shift on magnetic field established by AC double-circuit overhead transmission lines --- Part II: Dynamic analysis," IEEE Transactions on Power Delivery, Vol. 21, No. 2, 949-958, 2006.
23. Micu, D. D., L. Czumbil, G. C. Christoforidis, A. Ceclan, and D. Stet, "Evaluation of induced AC voltages in underground metallic pipeline," COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, Vol. 31, No. 4, 1133-1143, 2012.
24. Micu, D. D., G. C. Christoforidis, and L. Czumbil, "AC interference on pipelines due to double circuit power lines: A detailed study," Electric Power Systems Research, Vol. 103, 1-8, 2013.
25. Carson, J. R., "Work propagation in overhead wires with ground return," The Bell System Technical Journal, Vol. 5, 539-554, 1926.
26. Djekidel, R. and D. Mahi, "Calculation and analysis of inductive coupling e®ects for HV transmission lines on aerial pipelines," Przeglad Elektrotechniczny, Vol. 90, No. 9, 151-156, 2014.
27. Ahmed, H., M. Wael, and A. Ehab, "Effects of electromagnetic field from power line on metallic objects and human bodies," International Journal of Electromagnetics and Applications, Vol. 2, No. 6, 151-158, 2012.
28. Scott, J. H., Electrical and magnetic properties of rock and soil, US Geological Survey Technical Letter, Special Projects-16, 1966.
29. Eskom, Guideline on the electrical coordination of pipelines and power lines, Revision 1, Section 220.127.116.11, 13, 2015.
30. Kandia, E., M. Landini, G. Mazzanti, and G. Pasini, "A smart measurement and evaluation system for the magnetic field generated by multiple field sources in complex 3D arrangements," Proceedings of the IEEE Conference on Smart Measurements for Future Grids (IEEE/SMFG2011), Bologna, Italy, Nov. 14-16, 2011.