After 20 minutes of not returning to normal operating limits, what should the Reliability Coordinator do?

The correct action for the Reliability Coordinator after 20 minutes of conditions not returning to normal operating limits is to issue Operating Instruction to the Transmission Operator. This step is necessary because it is imperative to promptly address situations that can affect system reliability. By issuing specific Operating Instructions, the Reliability Coordinator can direct the Transmission Operator to take necessary actions to mitigate risk and restore stability in the system. This may include implementing emergency procedures, adjusting load flow, or other measures that ensure the integrity of the power system is maintained.

In situations where operating limits are breached for an extended period, the Reliability Coordinator’s proactive role is essential for preventing cascading failures or potential blackouts. Thus, issuing Operating Instructions is a clear and immediate means of achieving operational adjustments.

While issuing a weather alert or modifying existing operating limits might be relevant actions in other contexts, they do not directly address the immediate need for action to restore normal operating conditions. Similarly, evaluating the performance of the Transmission Operator, although important for post-event analysis, is not an immediate corrective measure to apply in the midst of the crisis. The focus should be on direct actions to stabilize the system, making the issuance of Operating Instructions the most appropriate course of action at that moment.