Normalization of double-circuit overhead line magnetic field inside Khrushchev building

Authors

DOI:

https://doi.org/10.20998/2074-272X.2021.3.06

Keywords:

magnetic field, overhead line, grid shield, reference level, quantity of metal

Abstract

This paper deals with the mitigation of 110 kV double-circuit overhead line magnetic field inside five-story Khrushchev buildings. We show that the magnetic field can exceed the reference level 0.5 μT in 90 % part of living space. To mitigate the magnetic field, we propose the inverted L-shaped grid shield with conductors on the wall and in the attic of the building. Using the analytical model of the grid shield and the numerical simulation, we determine the parameters of the L-shaped grid shield which provides the magnetic field normalization in 97 % part of living space. Further improvement of the grid shield profile, in particular, the placement of some conductors in the basement, allows to reduce the quantity of metal of the shield by 15 % while maintaining the shielding efficiency. Also we consider the magnetic field normalization for the overhead line with a rated current of 500 A. In this case, the quantity of metal of the grid shield increases 2.74 times.

Author Biographies

K. V. Chunikhin, State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine”, Ukraine

PhD

V. S. Grinchenko, State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine”, Ukraine

PhD

References

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Published

2021-06-23

How to Cite

Chunikhin, K. V., & Grinchenko, V. S. (2021). Normalization of double-circuit overhead line magnetic field inside Khrushchev building. Electrical Engineering & Electromechanics, (3), 38–41. https://doi.org/10.20998/2074-272X.2021.3.06

Issue

Section

Theoretical Electrical Engineering

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