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Voltage Regulation and Power Loss Minimization in Radial Distribution Systems via Reactive Power Injection and Distributed Generation Unit Placement

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Department of Electrical Power Engineering, Faculty of Electrical Engineering, Czech Technical University in Prague, Technická 2, 166 27 Prague 6, Czech Republic
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Department of Sustainable Technologies, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamýcká 961/129, 165 00 Prague 6, Czech Republic
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Department of Health Care Disciplines and Population Protection, Faculty of Biomedical Engineering, Czech Technical University in Prague, Sportovců 2311, 272 01 Kladno, Czech Republic
*
Author to whom correspondence should be addressed.
Energies 2018, 11(6), 1399; https://doi.org/10.3390/en11061399
Received: 7 May 2018 / Revised: 19 May 2018 / Accepted: 28 May 2018 / Published: 30 May 2018
(This article belongs to the Section Electrical Power and Energy System)
Distributed Generation (DG) has become an essential part of the smart grids due to the widespread integration of renewable energy sources. Reactive power compensation is still one of most important research topics in smart grids. DG units can be used for reactive power compensation purposes, therefore we can improve the voltage profile and minimize power losses in order to improve the power quality. In this paper two methods will be used to accomplish the mentioned tasks; the first technique depends on the reactive power demand change of the proposed network loads, whereas the second technique uses an algorithm to control DG units according to the measured voltage values in the feeders to generate the needed reactive power. Both methods were applied to different scenarios of DG unit positions and different reactive power values of loads. The chosen DG unit is made up of a Type-4 wind farm which could be used as a general unit where it is able to control reactive power generation in a wider range separately from active power. The simulation results show that using these two methods, the voltage profile could be improved, power losses reduced and the power factor increased according to the placement of DG units. View Full-Text
Keywords: distributed power generation; power quality; reactive power control; voltage control; wind farm distributed power generation; power quality; reactive power control; voltage control; wind farm
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Fandi, G.; Ahmad, I.; Igbinovia, F.O.; Muller, Z.; Tlusty, J.; Krepl, V. Voltage Regulation and Power Loss Minimization in Radial Distribution Systems via Reactive Power Injection and Distributed Generation Unit Placement. Energies 2018, 11, 1399.

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