International Journal of Electrical and Computer Engineering (IJECE) Vol. 12, No. 6, December 2022, pp. 5697~5706 ISSN: 2088-8708, DOI: 10.11591/ijece.v12i6.pp5697-5706  5697 Journal homepage: http://ijece.iaescore.com Electric and magnetic field calculation software in transmission lines Luis Imbachi Guerrero, Fredy Jiménez Rubio, Mario Rodríguez Barrera, Diego Giral-Ramírez Technologycal Faculty, Universidad Distrital Francisco Jose de Caldas, Bogotá, Colombia Article Info ABSTRACT Article history: Received Jul 8, 2021 Revised Jun 8, 2022 Accepted Jul 1, 2022 There is an interest in the biological effects of exposure to low-frequency electromagnetic fields issued by transmission lines on animals and humans. The fields generated by the lines are relevant for the design and operation of power systems. The study of the electric and magnetic fields in the transmission networks implemented commercial simulators bases on the finite element method. These commercial simulators are characterized by accuracy and high hardware and software requirements. This work presents CEM-LT, a tool that accurately precisely the electric and magnetic field in the transmission lines, with simple and intuitive handling and low processing times, making it ideal for being implemented together with optimization methods. The electric and magnetic field in the servant area for two case studies is analyzed to evaluate the accuracy and processing times. The level of accuracy is characterized by comparing the results with COMSOL obtaining errors of less than 2.4%. The case study with the highest computational requirement achieved a processing time of 3,027 seconds. Keywords: Electric field Magnetic field Servitude zone Simulation tool Transmission line This is an open access article under the CC BY-SA license. Corresponding Author: Diego Giral-Ramírez Technologycal Faculty, Universidad Distrital Francisco José de Caldas Street 68 D Bis A Sur # 49 F - 70, Bogotá, Colombia Email: dagiralr@udistrital.edu.co 1. INTRODUCTION This document aims to present software to reduce the high hardware and software requirements directly used by commercial simulators to calculate the electric and magnetic fields based on the finite element method. The implemented software is a computational tool developed in the MATLAB app designer, which only requires a free compiler to calculate the electric field and magnetic field in transmission lines. The CEM-LT software presents acceptable results compared to simulation software based on the finite element method such as COMSOL Multiphysics and its low computational time. Additionally, it represents clean and intuitive handling that does not require long hours of training. Given its most relevant characteristics, such as its low computational time and acceptable accuracy, it is ideal to be implemented in conjunction with stochastic optimization methods such as the particle swarm optimization (PSO). This implementation helps to determine the optimal location of transmission line conductors to minimize the electric field or the transmission lines to minimize the electric field or magnetic field in the easement zone [1], [2]. The transmission of alternating current electrical power [3], generates associated effects such as losses due to the corona effect, audible noise, and radio and television interference. Transmission lines are considered one of the principal sources of electric and magnetic fields [4]–[7]. The intensity of the fields emitted by these lines depends mainly on the transmitted current and their voltages. In the last two decades, there has been a scientific and social interest focused on the risk of the low-frequency electromagnetic fields low frequency electromagnetic field (LF-EMF) emitted by the lines of electrical transmission, considering