Study on measurement of Electromagnetic compatibility in the transmission lines and substations of Erdenet mining corporation

Abstract

Electromagnetic compatibility ( EMC) is an understanding of modern research, that research to summarize variety electromagnetic phenomena such as over voltage, radio noise, network voltage fluctuation, ground affect. It is essential to research of electromagnetic state and compatibility during the operation of the transmission lines and substations which is the largest electrical power system, and to take measures to protect the equipment, that exceeding the maximum permissible level of electromagnetic compatibility parameters. [1] The 220 kV, 110 kV, and 35 kV power grids and substations of Erdenet Industrial Power Plant, a major electricity consumer in Mongolia, were selected as the research objects. Electric and magnetic field measurements were conducted to determine the electromagnetic environment of the power supply system of the Erdenet plant, overhead power lines, and substations, and their compatibility. The measurements were performed using 4 types of instruments, HI-3603 SURVEY METER and -AARONIA SPECTRAN, which met the standards. A total of 3,484 measurements were taken at 41 points. The measurement results were processed using MATLAB and COMSOL software. The measurement and simulation results have been evaluated against the International Standard IEC 61000. he discrepancy between the simulated and measured values was within 3%, confirming that the developed simulation models are accurate and can be reliably used for further EMC studies.