Enhancing Voltage Stability of a Microgrid in the Presence of PV Plants Using Storage System
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Abstract
Due to the nearly inertia-free nature of the voltage source converter (VSC) based microgrid (MG), any fluctuations in the generation profile have an extremely detrimental effect on the voltage profile. A load imbalance at the point of common coupling (PCC) exacerbates the issue even further. Energy storage systems are critical components that ensure stability and dependability in microgrids with a significant proportion of renewable energy sources (RES). Coordination control between the PV (photo voltaic) and the BESS is necessary for power balance. This article describes a corrective voltage control (CVC) scheme for microgrid voltage regulation. An active and reactive power control strategy is suggested to reduce voltage fluctuations and thus mitigate the adverse effects of an unbalanced load. Incorporated battery energy storage devices will undergo dynamic charging during off-peak hours to minimize voltage dropouts and discharge during peak hours to prevent voltage spikes while regulating the PV inverter output's rapid fluctuations to a predetermined value. The outcomes validate the viability of the control schemes and Ess's integration into the microgrid.
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