Power Distribution system consists of tie and sectionalizing switches. Tie switches are normally open and sectionalizing switches are normally close. Reconfiguration can be used for the objectives of loss reduction, load balancing, etc. The change in network configuration is performed by opening sectionalizing (normally closed) and closing tie (normally open) switches of the network. Inputs data are based on real time data collected from 66/11kV substations under Yangon Electricity Supply Board (YESB). The proposed method is tested on 90-Bus, overhead AC radial distribution network of North Dagon Township (BaeLi substation), Yangon, Myanmar. The distribution network for existing and reconfiguration conditions are simulated by MATLAB software. This paper is focusing on evaluating the power loss reduction.
The advent of power electronics and computerized equipment in recent decades has brought enhanced efficiency and improved system but at the same time also created harmonics and waveform distortion to the power system network. Due to the growing use of nonlinear load equipment and new technologies in buildings, harmonic currents and voltages generated in distribution systems pose a new problem for electrical engineers. This is a serious problem when power quality is a prime concern. Harmonics are the main types of power quality problem that are very common to the power system containing electric arc furnace (EAF). Electric arc furnace (EAFs) are widely used in steelmaking and in melting of nonferrous metals. In this paper, EAF is presented guide lines for the accurate evaluation of harmonics generated in No.(3) Steel Mill, Ywama, Yangon. Passive filters have been most commonly used to limit the flow of harmonic currents in distribution systems. Their performance is limited to a few harmonics, and they can introduce resonance in the power system.
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