Published September 30, 2020 | Version v1
Journal article Open

ELECTROMAGNETIC INTERFERENCE (EMI) PRODUCED BY HIGH VOLTAGE TRANSMISSION LINES

Creators

  • 1. Al-Mustansiriya University

Description

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

Files

ELECTROMAGNETIC INTERFERENCE (EMI) PRODUCED BY HIGH VOLTAGE TRANSMISSION LINES.pdf

Files (502.5 kB)

Additional details

References

  • Sinik, V., Despotovic, Z., Radovanovic, L. (2013). Influence of Non-Ionizing Radiation on the Environment. Conference: International Science Conference REPORTING FOR SUSTAINABILITY, 465–469.
  • Silva Ortega, J., Cardenas Escorcia, Y., Valencia-Ochoa, G. (2018). Monitoring Electromagnetic Fields and Safe Operation Levels in Electrical Power Transmission Lines. Chemical Engineering Transactions, 67, 715–720. doi: https://doi.org/10.3303/CET1867120
  • Raghu, N., Nagendra, K. (2017). Survey of Electromagnetic Field Near EHV Lines and Their Health Hazards. Conference: ICspace-2017, 372–377.
  • Ali, Y. S. M., El-Baset, A. A., Elghaffar, A. N. A. (2016). Mathematical calculation of Electromagnetic field in high voltage substation to treatment its effect on the protective equipments. International journal of engineering, XIV.
  • Dervic, K., Jankovic, S., Despotovic, Z. V., Sinik, V. (2012). The radiation of electromagnetic fields of very low frequency. Conference: II International Conference ECOLOGY OF URBAN AREAS 2012. Vol. 1. Zrenjanin, 348–356.
  • Effects of High Voltage Transmission Lines on Humans and Plants. Available at: https://electricalnotes.wordpress.com/2012/02/17/effects-of-high-voltage-transmission-lines-on-humans-and-plants/
  • Ouadah, M., Zergoug, M. (2014). Analysis of the Electromagnetic Interferences between Overhead Power Lines and Buried Pipelines. Mediterranean Journal of Modeling and Simulation, MJMS, 01, 013–023.
  • Natarajan, R. (2002). Computer-Aided Power System Analysis. Boca Raton: CRC Press, 392. doi: https://doi.org/10.1201/9780203910832
  • Height above ground for measurement (2017). Energy Network Association.
  • Rycroft, M. (2018). The Mitigation of electric and magnetic fields from transmission lines. EE Publishers. Technology and Business for development.