DOI: https://doi.org/10.15407/techned2017.01.023

DOUBLE-CIRCUIT PASSIVE SHIELDING OF THE MAGNETIC FIELD OF HIGH-VOLTAGE CABLE LINES IN JUNCTION ZONES

Authors
V.Yu. Rozov¹, P.N. Dobrodeyev¹, A.A. Kvytsynskyi^2
1 – State Institution «Institute of Technical Problems of Magnetism of the NAS of Ukraine»,
Industrialna str. 19, Kharkiv, 61106, Ukraine,
e-mail: Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript
² – Research and Design Center of the unified power system of Ukraine of State
Enterprise «National Power Company «UKRENERGO»,
Dorogozhizkaіa str., 11/8, Kyiv, 04112, Ukraine

Abstract

The article holds dipole modeling of the magnetic field in junction zone of three-phase cable line for a typical case of the removal of the points of observation at a distance, in two or more times greater than the distance between the cables. It is shown that the magnetic field of a three-phase cable lines in the case of the symmetry of supply voltages can be determined by dipole magnetic moments of the only two current circuits that justifies the possibility of effective use of its two-circuit shielding instead of the well-known three-circuit shielding.A two-circuit passive shielding system proposed for junction zones of underground high-voltage three-phase cable lines. It characterized by a reduced number of elements (ferromagnetic cores), while maintaining the shielding factor greater than 10, which has experimental verification. References 9, figures 7.

Key words: cable line, magnetic field, contour passive shielding.

Received:    12.09.2016
Accepted:    13.09.2016
Published:  19.01.2017

References

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4. Rozov V.Yu., Kvytsynskyi A.A., Dobrodeyev P.N., Grinchenko V.S., Erisov A.V., Tkachenko A.O. Study of the magnetic field of three phase lines of single core power cables with two-end bonding of their shields. Electrical engineering & Electromechanics.  2015.  No 4.  Pp. 56-61. (Rus)
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