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1. The Reliability Coordinator just informed you of a slow time error correction which
will begin at the top of the next hour. Your EMS system will not let you change
your scheduled frequency. Your Frequency Bias Setting is -100 MW/.1Hz. What
action should you take?
A) Increase Net Interchange Schedule by 20 MWs.
B) Inform the Reliability Coordinator that you cannot participate in the time
error correction.
C) Decrease Net Interchange Schedule by 20 MWs.
D) Increase Net Interchange Schedule by 10 MWs. - A) Increase Net
Interchange Schedule by 20 MWs.
2. A Balancing Authority has a sudden loss of a large block of load in its area. This
loss will be seen instantaneously in the change of which of the following values?
1. Actual Net Interchange
2. Scheduled Frequency
3. Scheduled Net Interchange
4. Area Control Error
A) 4 only
B) 1 & 3
C) 1 & 4
D) 3 & 4 - C) 1 & 4
3. Metered Data included in the calculation of ACE are: dynamic schedules, pseudo
ties, actual frequency, and all _ .
A) Tie lines readings
B) Generators output
C) Scheduled frequency indications
D) Transformer load - A) Tie lines readings
4. Balancing Authority A is currently reading a system frequency of 60.00 Hz. Its
Net Actual Interchange is +100 MW and its Net Scheduled Interchange is +200
MW. If Balancing Authority A's frequency bias setting is 100 MW/0.1 Hz, what is
ACE?
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