Computation and measurement of electromagnetic fields of AC-high-voltage transmission lines

1996 ◽  
Author(s):  
K. Hameyer
Keyword(s):  
Electromagnetic Fields ◽  
High Voltage ◽  
Transmission Lines ◽  
High Voltage Transmission

scholarly journals Cost Effective Design of Extra High Voltage Transmission Lines for Minimizing Transmission Congestion Problems

2019 ◽  
Vol 8 (11) ◽  
pp. 1257-1262
Keyword(s):  
Objective Function ◽  
Electromagnetic Fields ◽  
High Voltage ◽  
Transmission Lines ◽  
Optimization Algorithm ◽  
Cost Benefits ◽  
Right Of Way ◽  
Tower Structure ◽  
High Voltage Transmission ◽  
Extra High Voltage

In Country like India having dense population, laying down new transmission lines is a great challenge. Also country being on fast track development mode, there is unceasing demand of electricity due to ever increasing industrialization. With advent of Extra and Ultra High Voltage transmission lines, corridor width for transmission lines can be reduced significantly. This paper describes utilization of a novel objective function for optimizing the structural design of Extra High Voltage transmission lines. Right of way for transmission lines are decided based on the effects of electromagnetic fields and corona effects in vicinity of the transmission lines. Objective function developed here takes into account the combined effects of electromagnetic fields to optimize design of transmission line tower structure. With compaction of towers further Right of way reduces leading to cost benefits in land procurement. A real time case of a transmission line situated in Gujarat is considered for validating the results of Optimization algorithm developed by authors. MATLAB has been used as programming platform for mathematical modeling as well as a platform for developing GUI that facilitates plotting of fields in vicinity of transmission lines in 2D and 3D environment. Genetic Algorithm coding is used to solve the optimization problem. Significant cost benefits and compactness in transmission tower structure is achievable as is clear from the results shown in this paper. This optimization algorithm can be extended for Ultra High Voltage lines also.

scholarly journals ELECTROMAGNETIC INTERFERENCE (EMI) PRODUCED BY HIGH VOLTAGE TRANSMISSION LINES

2020 ◽  
Vol 5 ◽  
pp. 43-50
Author(s):  
Ban M. Alameri
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Fields ◽  
High Voltage ◽  
Transmission Lines ◽  
Electromagnetic Interference ◽  
Short Circuit ◽  
Design Stage ◽  
High Current ◽  
Intense Magnetic Field ◽  
High Voltage Transmission

Electromagnetic interference in high voltage transmission lines has been an interest topic due to its effect on human health, plants, electrical and telecommunication equipment. Extremely high voltages (EHV) in transmission lines are reasons of electrostatic effects, while short circuit currents and line loading currents are responsible for electromagnetic effects. The aim of this research is to analyze electromagnetic fields in high voltage transmission lines in theoretical study and calculating its level in overhead T. L and therefore estimated the EMI produced, by employing a mathematical model of 230 KV tower double circuit configurations of high voltage transmission lines. The calculation is based on computer aided analysis (CAA) by using fields and corona effects software (FACE). It's found that the overhead power lines of general frequency (50 Hz) generates a highly intense magnetic field, the electromagnetic fields depends on the distance from sources and the type of line configuration. They decrease as the distance increase from the tower and conductors and increase with a high current. The strength of an electric field is proportional to the voltage of the line and the magnetic field strength is proportional to the current in the high voltage transmission lines. Distribution line with a high current load may produce a magnetic field that is as high as those produced by some high voltage transmission lines. Some techniques of reduction of the effects of electromagnetic interference have suggested such as rearrangement conductors of transmission line, and distance from phase conductor and grounding system. The study recommended to keep safety distance operation in high voltage transmission lines with the necessity for engineer to take into account the effect of electromagnetic interference in the design stage of high voltage transmission power system, and to avoid any addition cost may be occur due to neglected effects of electromagnetic interference that produces by high voltage transmission lines

scholarly journals Association between Exposure to Electromagnetic Fields from High Voltage Transmission Lines and Neurobehavioral Function in Children

PLoS ONE ◽  
2013 ◽  
Vol 8 (7) ◽  
pp. e67284 ◽  
Author(s):  
Jiongli Huang ◽  
Tiantong Tang ◽  
Guocheng Hu ◽  
Jing Zheng ◽  
Yuyu Wang ◽  
...  
Keyword(s):  
Electromagnetic Fields ◽  
High Voltage ◽  
Transmission Lines ◽  
Neurobehavioral Function ◽  
High Voltage Transmission
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