Indonesian Journal of Electrical Engineering and Computer Science Vol. 23, No. 2, August 2021, pp. 621~632 ISSN: 2502-4752, DOI: 10.11591/ijeecs.v23.i2.pp621-632  621 Journal homepage: http://ijeecs.iaescore.com Single line to ground fault detection and location in medium voltage distribution system network based on neural network Ahmed K. Abbas 1 , Sumaya Hamad 2 , Nuha A. Hamad 3 1 Department of Construction and Projects, University of Anbar, Anbar, Iraq 2 College of Computer Science and Information Technology, University of Anbar, Anbar, Iraq 3 University Headquarter, University of Anbar, Anbar, Iraq Article Info ABSTRACT Article history: Received Oct 14, 2020 Revised Jun 1, 2021 Accepted Jun 11, 2021 The aim of this project was to detect and locate the single ground failure lines that occurs in medium voltage (MV) networks on the transmission lines (TL). Compared with anther faults, single line-to-ground (SLG) is the most frequent. The neural network (NN) algorithm was advanced in order to discover and locate SLG faults. The network is simulated through simulated numerous defects at various locations, as well as changing earth resistance from (or 100 Ω) to TL to gather all of the data. In the electromagnetic transients’ program (EMTP) program software, the existing fault have been measured. In addition, the waves were evaluated by utilize MATLAP's fast- fourier-transform to calculate the waves of top three of them, On the MV network are fifty hundred faults are simulated all data in the neural network at MATLAB were trained and examined to improve the NN algorithm according to this data. Comparing all the simulated location faults that have been applied with those all locations detected in the NN algorithm, the overall error between them has been found to be very low and not to exceed 0.7. The Simulink circuit was created from this algorithm and checked in order to predict each failure could occur in the future in the MV network. Keywords: EMTP program software MATLAP's fast –fourier-transform MV network NN algorithm Single line to ground fault This is an open access article under the CC BY-SA license. Corresponding Author: Ahmed K. Abbas University Headquarter Department of Construction and Projects University of Anbar, Anbar, Ramadi, Iraq Email: Ahmed89at@uoanbar.edu.iq 1. INTRODUCTION The electricity is one of every country's major industries. Commonly (generation, transmission and distribution) are usually three components of each electrical system. They are all important to the whole power system. The power system has been sophisticated more and more over the past few years. The length of transmission lines (TL) in power system are increasingly longer. The TL voltage level is likewise higher and higher. Nonetheless, it is impossible to prevent defects on the transmission line [1]. The safety and stability of the power grid is compromised by such failures. The lengthy the electrical outage, the bigger the harm. Subsequently, the fault site is easily identified and utilities begin to get electricity. The exact detect of the failure point are the faster way to easily repair the defect. Therefore, the failure position appreciation for the transmission system is also important for electrical engineers and utilities, because of a number of reasons such as ionizing air and lightning, the failure of the electrical network happens. That come in touch with wires in the atmosphere, livestock or trees, and salt sprays and contaminations on insulators addition approximately 80% of the faults in the power network were due to interruption, particularly in the transmission area [2]-[5].