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چکیده
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In this paper, a hybrid droop coordination strategy is proposed to reduce total generation cost and total transmission power loss, simultaneously, for a class of DC microgrid. Generally, conventional droop control, which is known as a communicationless technique, is being used to ensure suitable power sharing among distributed generators. However, when both of the minimization of total generation cost and total transmission loss is intended, some modification should be taken in the droop strategy. In this regard, first, this paper presents a hybrid droop coordination strategy with the aim of loss and cost reduction in a DC microgrid by defining of weighting factors. Furthermore, an energy management system considering the proposed coordination strategy is used which has the responsibility to realize the best performance of the DC microgrid. A simulation study is conducted in MATLAB/Simulink environment under rapid load change and different weighting factors. Through comparison with the conventional droop scheme in different scenarios, it was found that the proposed method is able to reduce the total generation cost and the total transmission power loss by around 32.52% and 19.59% under defined assumptions.
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