scholarly journals Optimization of electric and magnetic field emissions produced by independent parallel overhead power lines

2017 ◽  
Vol 14 (2) ◽  
pp. 199-216 ◽  
Author(s):  
Aleksandar Rankovic ◽  
Vladica Mijailovic ◽  
Dimitrije Rozgic ◽  
Dragan Cetenovic
Keyword(s):  
Magnetic Field ◽  
Genetic Algorithm ◽  
Monte Carlo ◽  
Phase Shifts ◽  
Power Lines ◽  
Optimal Placement ◽  
Monte Carlo Approach ◽  
Field Emissions ◽  
Electric And Magnetic Field ◽  
Overhead Power Lines

This paper presents a method for determining optimal arrangements of parallel independent overhead power lines aimed to decrease electric and magnetic field emissions. The Genetic Algorithm (GA) is used to find the optimal placement of conductors. The Monte Carlo approach implemented in GA allows consideration of uncertain phase shifts between independent overhead power lines. The results and practical aspects of the proposed methodology are illustrated on two different configurations of both independent 400 kV singlecircuit and double-circuit overhead power lines.

Research on Frequency Electromagnetic Field of Parallel Transmission Line

2014 ◽  
Vol 986-987 ◽  
pp. 1992-1995
Author(s):  
Hong Ying Cao ◽  
Bo Tang ◽  
You Xian Peng ◽  
Yu Li ◽  
Bin Chen
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Field ◽  
Transmission Line ◽  
Transmission Lines ◽  
The State ◽  
National Standards ◽  
Power Lines ◽  
Three Gorges ◽  
Parallel Transmission ◽  
Electric And Magnetic Field

At present the study mainly for frequency electromagnetic field which is based on a single transmission line meanwhile the value must be in line with the requirements of the workers in the country frequency electromagnetic field. However, for parallel transmission line the maximum of frequency electromagnetic field is still to meet the provisions of the state, therefore in this paper studied the parallel transmission lines. Taking the multiple parallel power lines of China Three Gorges University as an example, the values of electric and magnetic field are calculated and the electromagnetic field is measured based on National standards. Then, compare the measured value with theoretical value, verified the correctness of the superposition algorithm.

scholarly journals The influence of conductive passive parts on the magnetic flux density produced by overhead power lines

2019 ◽  
Vol 32 (4) ◽  
pp. 555-569
Author(s):  
Slavko Vujevic ◽  
Tonci Modric
Keyword(s):  
Magnetic Field ◽  
Magnetic Flux ◽  
Flux Density ◽  
Biological Effects ◽  
Research Work ◽  
Power Lines ◽  
Magnetic Flux Density ◽  
Human Beings ◽  
Overhead Power Lines ◽  
The Magnetic Field

There has been apprehension about the possible adverse health effects resulting from exposure to power frequency magnetic field, especially in the overhead power lines vicinity. Research work on the biological effects of magnetic field has been substantial in recent decades. Various international regulations and safety guidelines, aimed at the protection of human beings, have been issued. Numerous measurements are performed and different numerical algorithms for computation of the magnetic field, based on the Biot- Savart law, are developed. In this paper, a previously developed 3D quasistatic numerical algorithm for computation of the magnetic field (i.e. magnetic flux density) produced by overhead power lines has been improved in such a way that cylindrical segments of passive conductors are also taken into account. These segments of passive conductors form the conductive passive contours, which can be natural or equivalent, and they substitute conductive passive parts of the overhead power lines and towers. Although, their influence on the magnetic flux density distribution and on the total effective values of magnetic flux density is small, it is quantified in a numerical example, based on a theoretical background that was developed and presented in this paper.

scholarly journals ELECTROMAGNETIC SAFETY AT THE INTERSECTION OF TRACTION NETWORKS AND POWER LINES WHEN WORKING AT HEIGHT

2021 ◽  
Vol 1 (1) ◽  
pp. 237-238
Author(s):  
Dmitriy Seredkin
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Fields ◽  
Software Package ◽  
Power Lines ◽  
Traction Network ◽  
Electric And Magnetic Field ◽  
Permissible Levels ◽  
Field Strengths

The electromagnetic fields affecting the personnel during the maintenance of the traction network from the leiter are considered. The results obtained during calculations using the methodology developed at IrGUPS and implemented in the Fazonord software package show that the electric and magnetic field strengths exceed the permissible levels for electrical personnel

MAGNETIC FIELD MEASUREMENT FROM 132/275 KV OVERHEAD POWER LINES

2016 ◽  
Vol 79 (1) ◽  
Author(s):  
Viloria Sherryl Jimbin ◽  
N. A. Ahmad
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
World Health ◽  
Power Lines ◽  
Magnetic Field Measurement ◽  
Exposure Limits ◽  
Overhead Power Lines ◽  
The Magnetic Field ◽  
Leukemia In Children ◽  
Lateral Profile

This paper presents a study on magnetic field radiated from 132/275kV overhead power lines. The magnetic field radiation from overhead power lines have become a concern to the public due to its adverse health effects such as leukemia in children. A report from World Health Organization (WHO) stated that radiated magnetic fields from overhead power lines may cause leukemia in children if they are exposed to it every day. Therefore, the main objective of this study is to measure the magnetic field radiated from 132/275kV power lines. EMDEX II, a free body meter is used to measure the magnetic field at 1 meter above ground level and the lateral profile was proven using MATLAB calculation. The measurement was done at SJK (T) Gelang Patah and Taman Pulai Utama at a distance of 35 meter from the outermost conductor. The results from both locations show that the radiated magnetic field is much lower than the exposure limit stated in the ICNIRP standard, in which the highest data recorded is only 4mG. The lateral profile magnetic field also shows that exposure to magnetic fields directly below the overhead power line are within the ICNIRP recommended exposure limits. Thus, it can be concluded that the magnetic field radiated by 132/275kV power lines in Malaysia operate at a safe level. 

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