In a scenario where Balancing Authority A reads a system frequency of 59.95 Hz, with a Net Actual Interchange of +100 MW and a Net Scheduled Interchange of +200 MW, what action will AGC pulse its generators to do?

When the system frequency reads 59.95 Hz, it indicates that the grid is experiencing a frequency drop below the nominal target of 60 Hz, which suggests that the system is not able to meet the current load demand. With Balancing Authority A having a Net Actual Interchange of +100 MW and a Net Scheduled Interchange of +200 MW, there is clearly a mismatch between the actual generation and the scheduled generation.

In this scenario, the Automatic Generation Control (AGC) will respond to the frequency being below 60 Hz by instructing the generators to increase their output. This action aims to restore the frequency back to its nominal value by injecting more power into the grid. The frequency drop implies that there is not enough generation to match the demand and scheduled interchange, hence the need to increase the MW output to ensure stability and reliability in the system.

As such, the AGC will pulse its generators accordingly to adjust output and help correct the imbalance in supply and demand. Increasing the MW output is the necessary corrective action to bring the system back to its desired frequency level.