SHORT CIRCUIT ANALYSIS IN SOLAR PV BASED MICRO-GRID USING ETAP

This research investigates the critical role of protective equipment in mitigating unsymmetrical faults within a renewable energy-based power system. Focusing on a microgrid powered by five Q-Cell solar panels, the study simulates and analyzes various short circuit fault scenarios to determine optimal protection strategies. The research employs Electrical Transient Analyzer Program (ETAP) to simulate Line-to-Ground, Line-to-Line, and Line-to-Line-to-Ground faults at both the generation (Bus 1) and distribution (Bus 2) sides of the microgrid. Fault durations are varied from a single cycle up to the maximum breaking capacity of the system. Additionally, simultaneous fault scenarios affecting both Bus 1 and Bus 2 are investigated. Through extensive simulations, the study generates a comprehensive data table encompassing fault currents and system responses across all tested scenarios. This data serves as a critical foundation for selecting appropriately rated circuit breakers and relays, ensuring the safe and reliable operation of the microgrid. The research emphasizes the importance of accurately determining fault clearing times to minimize equipment damage and maintain system stability in the face of unsymmetrical faults.