What does Net Actual Interchange minus Net Scheduled Interchange represent?

Net Actual Interchange minus Net Scheduled Interchange represents Inadvertent Interchange. In the context of power systems, Net Scheduled Interchange refers to the planned exchange of electrical power between control areas as per agreements or schedules. Conversely, Net Actual Interchange signifies the actual power interchange that occurred over the same period.

When there is a difference between these two values, it indicates that the actual interchange does not match what was scheduled, leading to a condition termed Inadvertent Interchange. This situation arises due to various operational factors, such as unexpected power flows or generation variances that were not accounted for or planned.

Understanding Inadvertent Interchange is critical for system operators as it can impact the reliability and stability of the power grid. It highlights the importance of accurate scheduling and monitoring of power movements to maintain balance within the interconnected operations of different control areas. This concept is particularly relevant in coordinated operations among different utilities and grid operators, where adherence to scheduled power exchanges is essential for operational integrity.