ACTIVE SHIELDING OF EXTERNAL MAGNETIC FIELD OF BUILT-IN TRANSFORMER SUBSTATIONS

Authors

DOI:

https://doi.org/10.20998/2074-272X.2020.3.04

Keywords:

urban transformer substation, living space, active shielding of the magnetic field

Abstract

This paper deals with the mitigation of low-frequency magnetic field of build-in transformer substations down to the reference level 0.5 μT in nearby living spaces. To meet the reference level, we substantiate the actuality of the usage of active shielding methods having higher efficiency, comparably to metal consuming passive shielding. We show that the optimization of parameters and localization of compensation coils is the main goal of the synthesis of the active shielding system. The solution of synthesis problem is based on the developed 3D numerical model by using particles multiswarm optimization algorithms from Pareto-optimal solutions set taking into account binary preference relations. This allows justifying the usage of simple active shielding system for magnetic field mitigation down to the reference level in living spaces, located near build-in transformer substations (2×400 kVA, 6/0.4 kV). The synthesized active shielding system has two plane compensation coils installed near the ceiling (wall) of the substation room. The area of each coil is less than 10 m2 and the number of ampere-turns is less than 30. We show that the efficiency of the active shielding system is 6 when it electric power consumption is less than 100 W. This allows mitigating the magnetic field down to 0.5 μT in 40 m2 living space located on top or side from the substation. The application of synthesized active shielding system (subject to the positive results of experimental studies of their full-scale physical models) allows solving the actual and socially significant problem of the health protection of tenants of residential buildings with build-in transformer substations from the negative effects of power frequency magnetic field. 

References

Serdiuk A.М., Dumanskiy V.Yu., Bitkin S.V., Didyk N.V., Dumanskiy Yu.D. Hygienical ground of requirements to placing and exploitation of cable busses of electricity transmission and their equipment in the conditions of modern municipal building. Hygiene of populated places, 2015, no.66, pp. 20-29. (Ukr).

Pravila ulashtuvannya electroustanovok [Electrical installation regulations]. Kharkiv, Fort Publ., 2017. 760 p. (Ukr).

Rozov V.Yu., Pelevin D.Ye., Pielievina K.D. External magnetic field of urban transformer substations and methods of its normalization. Electrical engineering & electromechanics, 2017, no.5, pp. 60-66. doi: 10.20998/2074-272X.2017.5.10.

Opoleva G.N. Skhemy i podstantsii elektrosnabzheniia. Spravochnik [Schemes and substations of power supply. Directory].Moscow, Forum-Infra Publ., 2006. 480 p. (Rus).

Leung S.W., Chan K.H., Fung L.C. Investigation of power frequency magnetic field radiation in typical high-rise building. European Transactions on Electrical Power, 2011, vol. 21, no. 5, pp. 1711-1718. doi: 10.1002/etep.517.

Rahman N.A., Rashid N.A., Mahadi W.N., Rasol Z. Magnetic field exposure assessment of electric power substation in high rise building. Journal of Applied Sciences, 2011, vol. 11, pp. 953-961. doi: 10.3923/jas.2011.953.961.

Grbić M., Canova A., Giaccone L. Magnetic field in an apartment located above 10/0.4 kV substation: levels and mitigation techniques. CIRED – Open Access Proceedings Journal, 2017, vol. 2017, no. 1, pp. 752-756. doi: 10.1049/oap-cired.2017.1230.

Bravo-Rodríguez J., del-Pino-López J., Cruz-Romero P. A Survey on Optimization Techniques Applied to Magnetic Field Mitigation in Power Systems. Energies, 2019, vol. 12, no. 7, p. 1332. doi: 10.3390/en12071332.

Canova A., Giaccone L. Real-time optimization of active loops for the magnetic field minimization. International Journal of Applied Electromagnetics and Mechanics, 2018, vol.56, pp. 97-106. doi: 10.3233/jae-172286.

del Pino Lopez J.C., Giaccone L., Canova A., Cruz Romero P. Ga-based active loop optimization for magnetic field mitigation of MV/LV substations. IEEE Latin America Transactions, 2014, vol.12, no.6, pp. 1055-1061. doi: 10.1109/tla.2014.6894000.

Shydlovskyi A.K., Rozov V.Yu. The system of automatic compensation of external magnetic fields of energy-objects. Technical electrodynamics, 1996, no.1, pp. 3-9. (Rus).

Rozov V.Yu., Rezinkina M.M., Dumanskiy Yu.D., Gvozdenko L.A. The study of man-caused distortions in the geomagnetic field of residential and industrial buildings and to identify ways to reduce them to a safe level. Technical electrodynamics. Thematic issue «Problems of modern electrical engineering». 2008, chapter 2, pp. 3-8. (Rus).

Kuznetsov B.I., Nikitina T.B., Bovdui I.V. High voltage power lines magnetic field system of active shielding with compensation coil different spatial arrangement. Electrical engineering & electromechanics, 2019, no.4, pp. 17-25. doi: 10.20998/2074-272X.2019.4.03.

Kuznetsov B.I., Nikitina T.B., Bovdui I.V. Active shielding of power frequency magnetic field in buildings in the vicinity of the electric airlines. Problemele energeticii regionale, 2019, no. 1-1(40), pp. 11-24. doi: 10.5281/zenodo.3239130.

Rozov V.Yu., Grinchenko V.S., Pelevin D.Ye., Chunikhin K.V. Simulation of electromagnetic field in residential buildings located near overhead lines. Technical Electrodynamics, 2016, no. 3, pp. 6-8. (Rus). doi: 10.15407/techned2016.03.006.

Pelevin D.Ye Screening magnetic fields of the power frequency by the walls of houses. Electrical engineering & electromechanics, 2015, no. 4, pp. 53-55. (Rus). doi: 10.20998/2074-272X.2015.4.10.

Published

2020-06-25

How to Cite

Rozov, V. Y., Kundius, K. D., & Pelevin, D. Y. (2020). ACTIVE SHIELDING OF EXTERNAL MAGNETIC FIELD OF BUILT-IN TRANSFORMER SUBSTATIONS. Electrical Engineering & Electromechanics, (3), 24–30. https://doi.org/10.20998/2074-272X.2020.3.04

Issue

Section

Electrotechnical complexes and Systems