Influence on heterogeneous earth layers parameters’ contrast on ground return impedance

• Autorzy: Lazimov T. , Saafan E.
• Języki publikacji: EN

Abstrakty

EN

Aerial electrical line’s impedances of ground return through heterogeneous and homogeneous grounds and their differences were calculated for the earth with different interlayer contrast of parameters for series thicknesses of the earth upper layer. Behavior of the impedance differences against changes of frequency and upper layer’s depth is investigated in the article. It was shown that the worst approach of relative differences to the zero takes place for the little thicknesses of the earth upper layer (less than 8 meters) and very high frequencies at which the impedance concept loses its certainty and physical meaning.

Słowa kluczowe

EN

Carson problem; ground return impedance; horizontally-layered earth; penetration depth

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Present Problems of Power System Control
• Rocznik: 2015
• Tom: Nr 6
• Strony: 15--20
• Opis fizyczny: Bibliogr. 11 poz., rys., tab.

Twórcy

autor

Lazimov T.

• [e-mail]
• Electric Supply and Insulation Chair, Azerbaijan Technical University, AZ1009, Baku, Azerbaijan,

autor

Saafan E.

• Electrical Engineering Department, Faculty of Engineering, University of El-Mansoura, Box 35516, Egypt

Bibliografia

• [1] J. R. Carson, Wave propagation in overhead wires with ground return, The Bell System Technical Journal, Vol. 5, No. 4, pp. 539-554, 1926.
• [2] V. R. Bursian, Theory of electromagnetic fields used in electrical exploration, Leningrad: Nedra, 1972 (in Russian).
• [3] M. V. Kostenko, Mutual impedances between overhead lines taking into account skin-effect, Electricity, No. 10, pp. 29-34, 1955 (in Russian).
• [4] T. M. Lazimov, Analytical expression of Carson integral for electrically homogeneous ground, Electricity, No. 8, pp. 66-72, 1993 (in Russian).
• [5] W. H. Wise, Propagation of free frequency currents in ground return systems, Proceeding IRE, Vol. 22, No. 4, pp. 522-527, 1934.
• [6] T. M. Lazimov, Analytical expression for the resistance of electrically homogeneous ground taking account its dielectric properties, Russian Electrical Engineering (New-York edition), Vol. 66, No. 2, pp. 27-31, 1996.
• [7] V. I. Glushko, Methods for calculation magnetic influence between electric circuits taking into account finite conductance of earth, Electricity, No. 3, pp. 6-18, 1986 (in Russian).
• [8] T. M. Lazimov, On convergence of Carson integral for horizontally layered earth, Balkan Journal of Electrical & Computer Engineering, Vol. 1, No. 1, pp. 2-5, 2013.
• [9] Jian-Ming Jin, Theory and computation of electromagnetic fields, Illinois University: Wiley, 1962.
• [10] T. M. Lazimov, E. Saafan, Some Features of Double-Wired Aerial Line’s Ground Return Impedance Calculation at Taking into Consideration Multi-Layered Earth’s Structure, AASCIT Physics, Vol.1, 2, pp.102-106, 2015.
• [11] T. M. Lazimov, E. Saafan, Some Modeling Features of Horizontally-Layered Ground’s Return Parameters, Balkan Journal of Electrical & Computer Engineering, Vol. 3, No. 2, pp. 50-54, 2015.