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Growth of electrical energy consumptions and increasing non-linear loads in power systems force the electrical power utilities to provide a high quality electrical power. This is the reason that this issue is getting more and more importance in power systems. This paper examines all power quality parameters based on the standard. In order to enhance the power quality, these parameters must be improved;...
This paper proposes a new methodology for diagnosing the original source and underlying causes of power system disturbances, where voltage and current recordings from different locations of a power system are collected. In the proposed method, disturbances are first pre-classified based on the number of transition segments. The spatial zone of the source of disturbances is coarsely determined from...
This paper puts forward an analysis of the effects of zero sequence components on power devices in particularly on the dynamic voltage restorer (DVR) and gives simulation results. It is shown that four-wire DVR do better then the traditional three-wire DVR, unbalance voltage and zero sequence components can be lessened by four-wire DVR effectively, because it provides zero sequence current circuit...
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