Date of Publication :12th July 2023

Abstract: So as to meet the constantly increasing demand of energy, grid-connected microgrid based on distributed energy will be the surest way to improve the power system in the near future. The implementation of microgrid systems brings enormous benefits to electricity suppliers and end users. The microgrid is usually connected to the main grid, that is when it works in grid connected mode and when the main grid does not supply electricity to users, the microgrid works in island mode and provides power, independent of the main grid. This article presents the control strategies for a hybrid microgrid with a capacity of 7.5 KW with 1.5 kW powered by wind and 6 kW by solar, installed at an engineering college in Maharashtra state. A detailed overview of PQ control strategy and droop control strategy related to microgrid operating modes is provided. This paper also addresses issues of microgrids such as island mode, stability, and unbalanced voltage to supply efficient power quality. P-Q control strategy equilibrates real and reactive power controlling the voltage and droop control is a prominent strategy for controlling actual power in power systems without internal communication. The microgrid can provide voltage and frequency support, improve power quality, and achieve stable and efficient output. Following this strategy the simulation of PQ control is concluded and the results are seen as required for the system i.e. 415V and 18A. Mathematical modelling of P-Q control and droop control is presented and is compared with the simulation result and are observed to be approximately equal.

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