In a disturbance with automatic actions, how are time-bound requirements assessed?

• A. No evaluation is needed during disturbances.
• B. Actions that occur within the required window meet the obligation; verify reliability impact and document times.
• C. Only manual actions are counted for time-bound requirements.
• D. Time-bound requirements are assessed after restoration.

Answer: (B)

When evaluating time-bound requirements during a disturbance, the key is whether the automatic actions occur within the defined time window. If those actions happen within the required interval, that portion of the obligation is considered fulfilled. It’s still important to verify the reliability impact of those actions—did the automatic operation achieve the intended effect on the system’s stability or recovery—and to document the exact times those actions occurred using logs from relays, protection schemes, and SCADA. This documentation provides traceability for compliance and audits. If automatic actions fail to occur within the window, the obligation isn’t met by those actions alone, and additional measures or corrective actions would be needed to ensure reliability within the prescribed time frame.