When heavy unscheduled flow causes voltage problems on a tie-line crossing two Reliability Coordinator areas, what should be established?

When heavy unscheduled flow creates voltage issues on a tie-line that spans two Reliability Coordinator areas, it is essential to establish Common Operating Procedures to effectively manage these voltage problems.

The rationale behind this choice is that Common Operating Procedures facilitate coordinated responses and ensure that both Reliability Coordinator areas are aligned in their actions and strategies. These procedures provide a structured way to address the complexities involved in handling unscheduled flows that affect voltage levels, including guidelines on how to communicate, operational protocols to mitigate impacts, and methods for adjusting operations as needed.

Having common procedures in place fosters collaboration and helps prevent misunderstandings between the two areas, ultimately leading to more effective management of the grid's stability. It enables both parties to act in a synchronized manner and quickly implement solutions that can alleviate voltage disturbances, which is crucial in maintaining system reliability.

Other options, while they may have their merits in various contexts, do not provide the same level of coordination and effectiveness in addressing voltage issues caused by unscheduled flows across interconnected areas.