What is required of PJM dispatchers concerning actual flows during emergencies?

PJM dispatchers play a critical role in maintaining the reliability of the electric grid during both normal operations and emergencies. When faced with an emergency situation, it is essential for dispatchers to ensure that the actual power flows do not exceed the established emergency ratings of transmission lines and equipment.

Returning flows to below emergency ratings is crucial because exceeding these ratings can lead to overheating, equipment failure, and potentially catastrophic power outages. By managing the flows to stay below the emergency limits, dispatchers help maintain system stability and safety, preventing damage to the transmission infrastructure and ensuring that power can be distributed reliably to consumers.

This focused management during emergencies not only safeguards the equipment but also supports the overall integrity of the electrical grid, allowing for the possibility of restoring normal operations more efficiently once the emergency has passed.