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Accurate power sharing for parallel DGs in microgrid with various-type loads | ||
| Energy Equipment and Systems | ||
| مقاله 3، دوره 5، شماره 1، خرداد 2017، صفحه 27-41 اصل مقاله (1.69 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/ees.2017.60847 | ||
| نویسندگان | ||
| Abbas Ketabi1؛ Sahbasadat Rajamand* 1؛ Mohammad Shahidehpour2 | ||
| 1Department of Electrical Engineering, University of Kashan, Kashan, Iran | ||
| 2Illinois Institute of Technology, Chicago, USA | ||
| چکیده | ||
| Microgrids are nowadays used to produce electric energy with more efficiency and advantage. However, the use of microgrids presents some challenges. One of the main problems of the microgrids widely used in electrical power systems is the control of voltage, frequency and load sharing balance among inverter- based distributed generators (DGs) in islanded mode. Droop method performance degrades when the feeder impedances of two DGs are different and thereby, further modification is required. In this article, a new method based on virtual impedance and compensating voltage is proposed and simulation results show that this method combined with droop control results in balanced power sharing with negligible voltage and frequency drop. Simulation results have been extracted from the Simulink, MATLAB and showed that the proposed method has a good performance in equal load sharing between two DGs with different feeder impedances; both in equal and different droop gains, and with different loads such as nonlinear or unbalanced ones. | ||
| کلیدواژهها | ||
| Microgrid؛ Compensating Voltage؛ Power Sharing؛ Inverter؛ Virtual Impedance؛ Nonlinear-Unbalanced Load | ||
| مراجع | ||
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