Indonesian Journal of Electrical Engineering and Computer Science Vol. 13, No. 3, March 2019, pp. 1117~1123 ISSN: 2502-4752, DOI: 10.11591/ijeecs.v13.i3.pp1117-1123  1117 Journal homepage: http://iaescore.com/journals/index.php/ijeecs Fault analysis for renewable energy power system in micro-grid distributed generation Ameerul A. J. Jeman 1 , Naeem M. S. Hannoon 2 , Nabil Hidayat 3 , Mohamed M. H. Adam 4 , Ismail Musirin 5 , Vijayakumar V 6 1,2,3,4,5 Faculty of Electrical Engineering, Universiti Teknologi MARA (UITM), Malaysia 6 School of Computing Science and Engineering, VIT University Chennai, India Article Info ABSTRACT Article history: Received Oct 5, 2018 Revised Dec 6, 2018 Accepted Dec 16, 2018 In distribution system, wind power plants are becoming popular renewable energy sources. It employs Doubly Fed Induction Generator (DFIG) to generate power based on wind conversion. Short and long transmission lines, presence of faults and presence of Static Synchronous Compensator (STATCOM) are highlighted issues in this paper. Basically, this research develops investigations on some electrical variables such as voltage and current to control them. Distribution Static Synchronous Compensator (DSTATCOM) is proposed in this paper. Wind farm acts as a source while DSTATCOM is connected to the distribution system with a DFIG based wind farm. The controller proposed is DSTATCOM is modeled and simulated in MATLAB/SIMULINK and the results are given. A microgrid based small signal analysis is performed in the laboratory using MATLAB and different comparisons are made and simulation case studies are presented and validated. Keywords: DFID Doubly fed induction generator DSTATCOM Renewable energy STATCOM Copyright © 2019 Institute of Advanced Engineering and Science. All rights reserved. Corresponding Author: Naeem M. S. Hannoon, Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia. Email: hannoon.naeem@gmail.com 1. INTRODUCTION Fault in electrical equipment or apparatus is defined as an imperfection in the electrical circuit due to which current is deflected from the intended path. Renewable energy often provides energy in four important areas which are electricity generation, air and water heating or cooling, transportation, and rural (off-grid) energy services. Sustainable power (sources) or RES catch their vitality from existing streams of vitality, from on-going characteristic procedures, for example, daylight, wind, streaming water, natural procedures, and geothermal warmth streams. In other words, the fault is the abnormal condition of the electrical system which damages the electrical equipment and disturbs the normal flow of the electric current. A wind farm is a group of wind turbines in the same location and it is used to provide electricity. An electrical energy producer is utilizing the renewable energy sources such as wind, solar, geothermal and biomass. The wind energy has lots of meaningful advantages with respect to other sources in terms of generation costs and installation. Wind cultivate is a region of land with a bunch of twist turbines for driving electrical generators. The wind energy is converted to electrical energy by the use of a generator. Wind turbine structure of the six-bladed turbine. Wind energy has knowledgeable an extraordinary expansion in recent years. The wind farm is aged, their operations are very complicated are gaining implications. Wind industries meet exaggerated failures due to failure of wind turbine equipment [1]. Output voltage during fault at short transmission line and long transmission line are different. Not many researchers highlighted the effect of changing transmission line on the voltage profiles of distributed generation.