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Distributed Generation (DG) system is a futuristic step towards generation of electrical power energy. It is treated as a microgrid, which is integrated with renewable energy resources. The successful implementation of DG in ac distribution system depends on the Power Quality (PQ) of generation. The power conditioning or the power quality of the microgrid is accomplished by Unified Power Quality Conditioner...
Due to the effect of line impedance and unequal load distribution, reactive power supplied by distributed power resources (DR) based on voltage source converter could not be shared according to their droop gains and the power quality will also be affected in ac microgrid. In this paper, a novel hierarchical control of ac micro-grid according to different time scales is proposed to improve power Sharing...
The local supply of power using micro-grids, to the consumer provides an effective way for reducing the stress on the grid. However, in connecting the micro-grids to the utility grid problems, such as power quality, load sharing, etc. arises. This paper presents a converter based interfacing approach for power sharing between the utility grid and the AC micro-grid. The proposed approach provides accurate...
This paper presents a new family of universal control and management strategies for microgrids in smart distribution grids. The paper also provides a general and computationally-efficient framework for modeling and analysis of power management strategies in a microgrid with multiple-distributed generation (DG) units which eases microgrid dynamic studies and controller parameters selection in large...
The VF (voltage and frequency control) droop control techniques are used to set the VF reference value which allows the operation of multiple VSCs in parallel to share the loads and regulate system voltage and frequency separately. In this paper, the characteristics of four VF control strategies which are: open loop VF control; VF control scheme with voltage feedback in abc reference frame; VF control...
In this paper, a new power sharing control method for a microgrid with several distributed generation units is proposed. The presence of both inertial and non-inertial sources with different power ratings, maximum power point tracking, and various types of loads pose a great challenge for the power sharing and system stability. The conventional droop control method is modified to achieve the desired...
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