Publication: Study of power quality in low voltage distribution network
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Date
2010-04-01
Authors
Wan Mohd Raimi, Wan Mohd Rafiq
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Abstract
In recent years, power quality has become a prolific buzzword and becomes the main issues on utility and customer side. The major problems in power quality are voltage sags and harmonic distortion, cause by a large capacity load and non – linear load. Recently, most of the electrical loads are on electronic based equipment and large capacity load. These problems could lead to another problem to utility and customer as well. Therefore, international organizations (IEC, IEEE) had created and stated a guidance and limitation in order to reduce and prevent the power quality problem nowadays. Regarding that problem, a study about power quality in low voltage distribution network has been carried out in order to get more understanding about that particular matter. Voltage sag phenomena, effect of harmonic on power loss and power factor on power distribution been included in the study. Besides, effect of unbalance load on three phase four wire distribution system on neutral current is also investigated. In order to get more understanding about power quality, a site survey and monitoring also been carried out at School of Electrical and Electronic Engineering and School of Mechanical Engineering. Considering the type of loads at that particular site, a measurement on harmonic content been carried out.