What is a common method used to compensate for unilaterally inadvertent interchange?

Compensating for unilaterally inadvertent interchange involves addressing the imbalance between scheduled and actual energy flows. One effective method is adjusting the Automatic Generation Control (AGC) system to offset the Area Control Error (ACE) to zero. The ACE represents the difference between the actual and scheduled interchange of electric power, taking into account frequency bias. By manipulating the AGC, operators can automatically adjust generation levels to correct any imbalances, ensuring that the system maintains reliability and that power flows correspond with what was agreed upon in interconnections. This method effectively helps manage inadvertent interchange discrepancies and stabilizes the grid.

Although other options may serve various purposes within grid management, they do not specifically address the correction of inadvertent interchange in the same direct manner as adjusting AGC. For instance, reducing load could be a response to more severe system imbalances but does not align specifically with compensation for inadvertent interchange. Increasing the provision of ancillary services bolsters system reliability, but it doesn't directly correct past interchanges. Emergency procedures are more reactive to immediate system crises rather than a method for compensation of inadvertent interchanges.