Power Quality Analysis of Hybrid AC/DC Microgrid in Distribution Network
Sheeba Jeba Malar J1, Jayaraju M2

1Sheeba Jeba Malar.J, Department of Electrical and Electronics, John Cox Memorial CSI Institute of Technology, Kerala, India.
2Jayaraju Madhavan, Department of Electrical and Electronics, MES Engineering College Kollam Kerala, India.

Manuscript received on 18 April 2018 | Revised Manuscript received on 27 April 2018 | Manuscript published on 30 April 2018 | PP: 107-111 | Volume-7 Issue-4, April 2018 | Retrieval Number: D5361047418/18©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Microgrid is a complex structure which is a localized group of electricity generation, storage and load which usually operates connected to a macrogrid. The quality of power delivered to the grid during interconnection is one of the key factors which determine the reliability of the microgrid and is affected due to various reasons which include electronic components that leads to equipment overheating, excessive neutral currents etc., which can cause voltage dip, flicker and unbalance voltage at the end user. The power quality level in microgrid has to be quantized and necessary analysis has to be done to investigate the power quality impact in microgrid network. In this paper the analysis of THD of the hybrid system with PV and DFIG in grid connected and islanded mode is studied using MATLAB/SIMULINK. It is found that the THD is reduced when both PV and wind are connected to the grid and increases when isolated. The major advantage of this analysis emphasizes that this system can be applied for highly nonlinear and variable PV and wind systems connected together with the grid. Simulation results also shows that this system is effective for microgrid with varying inputs.
Keywords: Microgrid, Power Quality, Grid Connected, Isolated, Photovoltaic Array, DFIG

Scope of the Article: Quality Control