Development and Implementation of Auto-Recloser Simulator Kit for Enhanced Grid Reliability and Offline Relay Testing

In EHV transmission systems, auto-reclose is a critical protection feature for maintaining system availability during transient faults. In practice, it has been observed that auto-reclose failure often occurs due to incorrect configuration, logic mismatch, or wiring issues in autoreclose relays. Testing and troubleshooting of auto-reclose relays in online condition is difficult and carries the risk of unwanted line tripping and repeated Circuit Breaker operations.