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Power Quality Consideration for Off-Grid Renewable Energy Systems

Hojabri, Mojgan and Toudeshki, Arash (2013) Power Quality Consideration for Off-Grid Renewable Energy Systems. Energy and Power Engineering, 5 (5). pp. 377-383. ISSN 1949-243X (print); 1947-3818 (online)

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Abstract

Necessity of electricity access in remote area is the main reason for expanding decentralized energy system such as stand-alone power systems. The best electrical power supply must provide a constant magnitude and frequency voltage. Therefore, good power quality is an important factor for the reliable operation of electrical loads in a power system. However, the current drawn by most of electronic devices and non-linear loads are non-sinusoidal, which can result in a poor power quality, especially in off-grid power systems. Poor power quality is characterized by electrical disturbances such as transients, sags, swells, harmonics and even interruptions in the power supply. Off-grid power systems world- wide often struggle with system failures and equipment damage due to poor power quality. In this paper, MAT- LAB/Simulink is used to model and analyses power quality in an off-grid renewable energy system. The results show high voltage transient when the inductive loads were switched OFF. The voltage and current harmonics are also deter- mined and compared for various types of loads.

Item Type: Article
Uncontrolled Keywords: Off-Grid Renewable Energy System; Power Quality; Pulse Width Modulation (PWM) Inverters; Total Harmonic Distortion; Total Demand Distortion
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division: Faculty of Electrical & Electronic Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 27 Oct 2015 00:23
Last Modified: 09 Jan 2018 05:44
URI: http://umpir.ump.edu.my/id/eprint/5959
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