Question 1
You are an external BA with a frequency bias of 20MW/0.1Hz that sees a frequency of
60.02 Hz due to a large loss of load in the contingent BA. If your generator governor
control systems respond to this frequency deviation, appx. How much of a generation
change would your BA experience?
A. 1.2 MW
B. -4 MW
C. -40 MW
D. +4 MW
CORRECT ANSWER
D. +4 MW
Question 2
Net Actual Interchange minus Net Scheduled Interchange is what?
A. Always equal to the frequency bias contribution
B. The ACE Equation
C. Inadvertent Interchange
D. Meter Error
CORRECT ANSWER
C. Inadvertent Interchange.
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,Question 3
If BA ABC's RTU signal for power flow over ABC's Midway tie-line with BA XYZ is
significantly in error, the ABC system operator shall.......
A. Adjust the control settings to compensate for the equipment error until repairs can be
made.
B. Not make any adjustments, but after the RTU gets repaired, perform true-up calculation
on the inadvertent account
C. Call the XYZ BA and set up and inadvertent interchange schedule that is larger than the
RTU error.
D. Let the AGC system handle the problem.
CORRECT ANSWER
A. Adjust the control settings to compensate for the equipment error until repairs can be
made.
Question 4
The normal and recommended mode of the AGC is what?
A. Net tie-line
B. Flat Frequency (60Hz)
C. Predictor-corrector
D. Tie-line frequency bias
CORRECT ANSWER
D. Tie-line frequency bias
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,Question 5
A 100 MW generator at 50 MW output that has a 5% governor droop response will
respond how much to a -0.15 Hz frequency deviation (Fa=59.85 Hz.)?
A. -10 MW
B. -5 MW
C. +5 MW
D. +10 MW
CORRECT ANSWER
C. +5 MW
Question 6
Which of the following complies with the CPS1?
A. 90%
B. 95%
C. 135%
D. 205%
CORRECT ANSWER
C. 135%
Question 7
3
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, A system disturbance has caused your BA to lose tie-line rtus with a neighboring BA and all
frequency meters which telemeter data into your energy management system. How would
you operate your AGC system for this scenario?
A. Implement a flat 60 Hz frequency control mode and do not change your frequency bias.
B. Leave the AGC system in tie-line bias control mode
C. Place all generating units on manual control mode and try as best you can to match
generation and load.
D. Implement a flat 60 Hz frequency control mode and increase your B based on your system
restoration procedure.
CORRECT ANSWER
C. Place all generating units on manual control mode and try as best you can to match
generation and load.
Question 8
Ea. BA shall perform control error checks using tie-line mwh meters to determine the
accuracy of its control equipment . How often do NERC Reliability Standards require ea. BA
to perform these control error checks?
A. Every 10 min
B. Every hour
C. At least once per day
D. At least once per week
CORRECT ANSWER
B. Every Hour
4
@THE STUDY VAULT
You are an external BA with a frequency bias of 20MW/0.1Hz that sees a frequency of
60.02 Hz due to a large loss of load in the contingent BA. If your generator governor
control systems respond to this frequency deviation, appx. How much of a generation
change would your BA experience?
A. 1.2 MW
B. -4 MW
C. -40 MW
D. +4 MW
CORRECT ANSWER
D. +4 MW
Question 2
Net Actual Interchange minus Net Scheduled Interchange is what?
A. Always equal to the frequency bias contribution
B. The ACE Equation
C. Inadvertent Interchange
D. Meter Error
CORRECT ANSWER
C. Inadvertent Interchange.
1
@THE STUDY VAULT
,Question 3
If BA ABC's RTU signal for power flow over ABC's Midway tie-line with BA XYZ is
significantly in error, the ABC system operator shall.......
A. Adjust the control settings to compensate for the equipment error until repairs can be
made.
B. Not make any adjustments, but after the RTU gets repaired, perform true-up calculation
on the inadvertent account
C. Call the XYZ BA and set up and inadvertent interchange schedule that is larger than the
RTU error.
D. Let the AGC system handle the problem.
CORRECT ANSWER
A. Adjust the control settings to compensate for the equipment error until repairs can be
made.
Question 4
The normal and recommended mode of the AGC is what?
A. Net tie-line
B. Flat Frequency (60Hz)
C. Predictor-corrector
D. Tie-line frequency bias
CORRECT ANSWER
D. Tie-line frequency bias
2
@THE STUDY VAULT
,Question 5
A 100 MW generator at 50 MW output that has a 5% governor droop response will
respond how much to a -0.15 Hz frequency deviation (Fa=59.85 Hz.)?
A. -10 MW
B. -5 MW
C. +5 MW
D. +10 MW
CORRECT ANSWER
C. +5 MW
Question 6
Which of the following complies with the CPS1?
A. 90%
B. 95%
C. 135%
D. 205%
CORRECT ANSWER
C. 135%
Question 7
3
@THE STUDY VAULT
, A system disturbance has caused your BA to lose tie-line rtus with a neighboring BA and all
frequency meters which telemeter data into your energy management system. How would
you operate your AGC system for this scenario?
A. Implement a flat 60 Hz frequency control mode and do not change your frequency bias.
B. Leave the AGC system in tie-line bias control mode
C. Place all generating units on manual control mode and try as best you can to match
generation and load.
D. Implement a flat 60 Hz frequency control mode and increase your B based on your system
restoration procedure.
CORRECT ANSWER
C. Place all generating units on manual control mode and try as best you can to match
generation and load.
Question 8
Ea. BA shall perform control error checks using tie-line mwh meters to determine the
accuracy of its control equipment . How often do NERC Reliability Standards require ea. BA
to perform these control error checks?
A. Every 10 min
B. Every hour
C. At least once per day
D. At least once per week
CORRECT ANSWER
B. Every Hour
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@THE STUDY VAULT
