Estimation of the Spatial and Temporal Distribution of Magnetic Fields around Overhead Power Lines—A Case Study

Due to the growing number, diversity and spreading of magnetic field sources, an increasing need to determine the field levels of human exposure has arisen. Some of the most encountered sources are the overhead power lines (OPL) and the determination of spatial and temporal variation of the magnetic...

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Bibliographic Details
Published in:Mathematics (Basel) 2023-05, Vol.11 (10), p.2292
Main Authors: Pavel, Ionel, Petrescu, Camelia, David, Valeriu, Lunca, Eduard
Format: Article
Language:English
Subjects:
Case studies
Density distribution
Electric properties
experimental determination of magnetic fields
Flux density
magnetic field survey
Magnetic fields
Magnetic flux
Mathematics
modeling and simulation of OPLs
Optimization
Power lines
Simulation
Simulation methods
Spatial distribution
Temporal distribution
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Summary:Due to the growing number, diversity and spreading of magnetic field sources, an increasing need to determine the field levels of human exposure has arisen. Some of the most encountered sources are the overhead power lines (OPL) and the determination of spatial and temporal variation of the magnetic fields produced by OPLs is a challenge. In this paper a hybrid method for the estimation of the temporal and spatial distribution of the magnetic flux density B caused by OPLs, based on experimental measurements and on numerical and analytical simulations, is presented. Thus, using a small number of simultaneous spot measurements correlated with a long-term survey, maps of the magnetic flux density distribution on extended areas are established, for several time instances. The proposed method is verified using two sets of different measurements and the results obtained through simulation. The difference between the estimated and simulated values of B is under 5.5%, which is considered acceptable considering that B spans over a large set of values (724 nT ÷ 1375 nT) in the location of the long-term survey procedure. The possibilities and limitations of the proposed method are discussed.
ISSN:2227-7390
2227-7390
DOI:10.3390/math11102292