Nikola Tesla Institute
Dejan Hrvić
Analysis of Electromagnetic Field Levels in the Vicinity of the Mixed Transmission Power Line Tower at the Location of Transition from Overhead to Cable Section
ABSTRACT
The paper analyzes the levels of electromagnetic field in the vicinity of a 110 kV mixed transmission line tower, at the transition point between the overhead and underground sections. The aim of the research is to quantify the electromagnetic field levels near this tower and to compare them with the field levels on the overhead and underground cable sections of the line. The research encompasses two complementary approaches – field measurements and numerical modeling. The measurements of electromagnetic field were conducted under real conditions in the vicinity of the aforementioned tower, using appropriate measuring equipment. In addition to measurements, electromagnetic field calculations are performed using specialized software. The model includes all relevant parameters of the transmission line, including conductor geometry and heights above the ground and electrical characteristics of the line. Simulations will provide a detailed insight into the spatial distribution of the electromagnetic field and enable comparisons with experimentally obtained results. The obtained results will provide an understanding of the differences in electromagnetic field levels around the tower compared to the levels in the overhead and underground cable sections of the transmission line. These results will be analyzed in the context of current regulations regarding the protection of the general public from non-ionizing radiation. Besides analyzing electromagnetic field levels, the paper also proposes measures to reduce the field levels around such towers and emphasizes the importance of proper planning and design of transmission lines to minimize the negative impacts of the electromagnetic field on the environment. The conclusions of the paper provide specific information on the characteristics of the electromagnetic field in the particular conditions of transition from an overhead to an underground cable transmission line. They contribute to further research and the development of methods for reducing electromagnetic radiation near power transmission lines.
Keywords: electromagnetic field, non-ionizing radiation, electric field strength, magnetic flux density, mixed transmission line, power transmission line
Biography of the presenter
Dejan Hrvić was born in Belgrade in 1961. He enrolled at the Faculty of Electrical Engineering, University of Belgrade, Department of Power Engineering, in 1981, and graduated in October 1986. Since 1987, he has been continuously employed at the “Nikola Tesla” Institute, where he currently holds the position of Senior Advisor. Since 2005, his professional focus has shifted to the testing of non-ionizing radiation levels in both low and high-frequency ranges, addressing requirements in the fields of environmental protection and occupational safety. He actively participates in these projects both as a project manager and as a key contributor. Over the course of his work, Mr. Hrvić has contributed to the production of more than one thousand commercial reports on the respective testing procedures conducted within the Laboratory for Testing and Calibration. He is also the co-author of two nationally significant monographs and three internal standards (two in the field of electromagnetic compatibility – EMS, and one for the Electric Power Industry of Serbia – EPS). Mr. Hrvić is an active member of several professional organizations, including: The Serbian National Committee of CIGRE and the CIGRE Assembly (individual member), Study Committee C4: Technical Performance of Power Systems, Study Committee C3: Environmental Performance of Power Systems.
