New EEM/BEM Hybrid Method for Electric Field Calculation in Cable Joints

Authors: Nebojsa B. Raicevic, Slavoljub R. Aleksic, Sasa S. Ilic

Abstract:

A power cable is widely used for power supply in power distributing networks and power transmission lines. Due to limitations in the production, delivery and setting up power cables, they are produced and delivered in several separate lengths. Cable itself, consists of two cable terminations and arbitrary number of cable joints, depending on the cable route length. Electrical stress control is needed to prevent a dielectric breakdown at the end of the insulation shield in both the air and cable insulation. Reliability of cable joint depends on its materials, design, installation and operating environment. The paper describes design and performance results for new modeled cable joints. Design concepts, based on numerical calculations, must be correct. An Equivalent Electrodes Method/Boundary Elements Method-hybrid approach that allows electromagnetic field calculations in multilayer dielectric media, including inhomogeneous regions, is presented.

Keywords: Cable joints, deflector's cones, equivalent electrodemethod, electric field distribution

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1055611

References:

[1] N. B. Raicevic, and S. R. Aleksic, "One method for electric field determination in the vicinity of infinitely thin electrode shells", Engineering Analysis with Boundary Elements, Elsevier, vol. 34, no. 2, pp. 97-104, February 2010.
[2] N. B. Raicevic, S. R. Aleksic, and S. S. Ilic, "A Hybrid Boundary Element Method for Multilayer Electrostatic and Magnetostatic Problems", Electromagnetics, Taylor & Francis, vol. 30, no. 6, pp. 507- 524, August 2010.
[3] N. B. Raicevic, S. R. Aleksic, and S. S. Ilic, "One Numerical Method to Determine Improved Cable Terminations", Electric Power Systems Research, Elsevier, vol. 81, no. 4, pp. 942-948, April 2011.
[4] N. B. Raicevic, "Conformal mapping and equivalent electrodes method application on electric field determination at cable accessories", in: F. Liu, G.M. Nguerekata, D. Pokrajac, X.Q. Shi, J.G. Sun, X.G. Xia (Eds.), Discrete and Computational Mathematics. New York, USA: Nova Publishers, 2008, chapter14, pp. 205-214.
[5] N. B. Raicevic, "Electrical field and potential distribution at the cable termination", in Proc. IEEE Int Conf on Electric Power Engineering POWER TECH'99, Budapest, Hungary, August 29 - September 2 1999, paper BPT 99-471-30 (CD).
[6] N. B. Raicevic, and S. R. Aleksic, "One Method for Strong Electric Field Reduction at Cable Terminations and their Influence on Environment", in Proc. of the 7th International Symposium on Electromagnetic Compatibility and Electromagnetic Ecology, EMC'2007, Saint Petersburg, Russia, 26-29 June 2007, pp. 88-91.
[7] N. B. Raicevic, and S. R. Aleksic, "Electric field regulation at the cable accessories using one new numerical approach", Acta Electrotechnica et Informatica, vol. 7, no.1, pp. 29-36, 2007.
[8] N. B. Raicevic, "Electrical field modelling at the cable joints", Facta Universitatis (Nis), Series: Electronics and Energetics, vol. 20, no. 1, pp. 9-20, April 2007.
[9] R. M. Dimitrijevic, D. S. Tasic, N. B. Raicevic, S. R. Aleksic, and N. M. Pekaric-Nadj, "Analysis of a MV XLPE Cable Termination Design with Embedded Electrodes", Facta Universitatis (Nis), Series: Electronics and Energetics, vol. 23, No. 1, pp. 99-117, April 2010.
[10] N. B. Raicevic, "Electrical Field Distribution at Cable Joints", in Proc. of the Sixth International Symposium on Electric and Magnetic Fields EMF 2003, Aachen, Germany, 06-09 October, 2003, pp. 163-166.
[11] N. B. Raicevic, "Electrical Field Modelling at the Cable Joints", in Proc. of the 7th Int. Conf. PES 2005, Nis, Serbia & Montenegro, 23-25 May 2005, pp. 19-30.
[12] N. B. Raicevic, and S. R. Aleksic, "Application of Multilayer Dielectric Systems on Electric Field Modelling in Cable Accessories", Proc. of the International PhD Seminar on Computational Electromagnetics and Optimization in Electrical Engineering, CEMOEE 2010, Sofia, Bulgaria, 10-13 September, 2010, pp. 137-148. (invited paper).
[13] S. V. Nikolajevic, N. M. Pekaric-Nadj, R. M. Dimitrijevic, "A new concept in construction of cable terminations for medium voltages", IEEE Trans. on Power Delivery, vol. 13, no. 3, pp. 712-717, July 1998.
[14] G. Liu, Y. Liu, C. Wang and Z. Yi, "The Study on Evaluation Model for Prefabricated HV Stress Cone of Cable Terminations Weakness Based on Finite Element", in Proc. of the 2006 IEEE International Symposium on Electrical Insulation, Toronto, Ontario, Canada, 11-14 June 2006, pp. 486 - 489.
[15] Y. Daigo, H. Takehisa, S. Shigeki, and K. Mikio, "Electric Field Optimization of the Power Cable Joint by Using Evolutionary Calculation Method", Electrical Engineering in Japan, vol. 150, no. 4, pp. 44-53, March 2005.
[16] D. M. Velickovic, "Equivalent electrodes method", Scientific Review - Belgrade, no. 21-22, pp. 207-248, 1996.
[17] N. B. Raicevic, and S. S. Ilic, "One Hybrid Method Application on Complex Media Strip Lines Determination", in. Proc. of 3rd International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, METAMATERIALS 2009, London, United Kingdom, August 30th - September 04th 2009, pp. 698-700.
[18] N. B. Raicevic, and S. S. Ilic, "One Method for Chiral and Metamaterial Strip Lines Determination", in Proc. of Papers of International Conference on European Electromagnetics, EUROEM 2008, Lausanne, Switzerland, July 21-25 2008. pp.44-44.