Abstract: - The increasing integration of photovoltaic (PV) systems into smart microgrids presents significant challenges in power quality, voltage regulation, and reactive power management. Effective reactive power sharing is crucial for maintaining grid stability and optimizing energy distribution. This research proposes an advanced control strategy for reactive power sharing in a smart microgrid with a high penetration of PV systems. The study explores decentralized and hierarchical control methods, incorporating droop-based techniques, intelligent controllers, and adaptive algorithms to enhance reactive power distribution while minimizing voltage deviations. Additionally, energy storage integration and real-time monitoring are considered to improve power reliability and mitigate fluctuations caused by PV intermittency. The proposed model is simulated using MATLAB/Simulink, and its performance is evaluated based on voltage stability, power factor correction, and dynamic response under varying load and irradiance conditions. The results demonstrate improved efficiency, stability, and reactive power coordination, contributing to the development of sustainable and resilient smart microgrids.