Relay stability is a critical aspect of modern power systems, ensuring that protective relays operate correctly without causing unnecessary interruptions or failures. These relays are designed to detect abnormal conditions, such as overcurrent or faults, and respond by triggering circuit breakers to protect electrical equipment. However, the stability of these relays is essential for the system’s overall reliability. Relay stability involves several complex factors, including dynamic stability, security versus sensitivity, time stability, and harmonic stability. Each of these factors contributes to the optimal performance of relays in maintaining a secure and reliable power grid.