Investigation of the Influence of the Electromagnetic Field in the Vicinity of High Voltage Overhead Line

Abstract

The magnetic and electrical field in the vicinity of overhead power line for high voltage - 220 kV is investigated. FEM model is created. Simulations of normal and emergency mode of the power line are made. The electrical intensity at idle mode in some areas, close to overhead power line, creates a high voltage level for humans. It can create also disturbances in the electrical equipment and the vehicles. These surges violate electromagnetic compatibility. The magnetic induction at emergency mode – short circuit and lightning strike in the areas around the towers could give a disturbing reaction of humans, animals and sensitive electronic devices. One solution for decreasing of the magnetic flux density to acceptable values is offered.

A Novel Frequency Communication Technology in Power Distribution Communication Network

“…will supply lines, transformers and Load are equivalent to impedance, as a basis for the establishment of frequency communication signal modulation and transmission model, through simulation [3]. It is shown that when the modulation is made at 30 before the zero crossing of the voltage, the main component of the distortion signal is in the vicinity of the voltage zero to about 3ms, the frequency between 200Hz to 600Hz, the amplitude of the distortion signal and the modulation transformer Capacity and modulation device parameters, when the distribution network load is heavy, the modulation signal will exist residual oscillation section [3,4].…”