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Use channels for "Machine angle statistics". Five channels are added:

1: TOTAL PMECH

2: TOTAL PELEC

3: TOTAL accelerating power

4: TOTAL PLOAD

5: TOTAL PELEC - PLOAD

The total accelerating power is a good indicator of the deficit of turbine power in the system.

In a script, use psspy.chnval to retrieve the accelerating power during the simulation.

Use channels for "Machine angle statistics". "Subsystem Power Totals" and select "All buses". Five channels are added:

1: TOTAL PMECH

2: TOTAL PELEC

3: TOTAL accelerating power

4: TOTAL PLOAD

5: TOTAL PELEC - PLOAD

The total accelerating power is a good indicator of the deficit of turbine power in the system.

In a script, use psspy.chnval to retrieve the accelerating power during the simulation.