ne
SOS NERC Prep - RElIABILITY Exam| 200
sh
QUESTIONS AND ANSWERS (VERIFIED
ne
ANSWERS)| GRADED A
la
tz
sh
Sp
ne
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
la
change your scheduled frequency. Your Frequency Bias Setting is -100 MW/.1Hz.
sh
Sp
What action should you take?
ne
la
tz
A) Increase Net Interchange Schedule by 20 MWs.
sh
Sp
ne
la
B) Inform the Reliability Coordinator that you cannot participate in the time error
sh
correction.
Sp
ne
la
tz
C) Decrease Net Interchange Schedule by 20 MWs.
sh
Sp
ne
la
D) Increase Net Interchange Schedule by 10 MWs. - ANSWER--A) Increase Net
Interchange Schedule by 20 MWs.
sh
Sp
ne
la
A Balancing Authority has a sudden loss of a large block of load in its area. This
tz
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loss will be seen instantaneously in the change of which of the following values?
Sp
ne
la
1. Actual Net Interchange
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Sp
2. Scheduled Frequency
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3. Scheduled Net Interchange
a
tz
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sh
4. Area Control Error
Sp
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la
sh
Sp
la
Sp
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SOS NERC Prep - RElIABILITY Exam| 200
sh
QUESTIONS AND ANSWERS (VERIFIED
ne
ANSWERS)| GRADED A
la
tz
sh
Sp
A) 4 only
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la
B) 1 & 3
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Sp
C) 1 & 4
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D) 3 & 4 - ANSWER--C) 1 & 4
la
tz
sh
Sp
ne
Metered Data included in the calculation of ACE are: dynamic schedules, pseudo
ties, actual frequency, and all __________.
la
sh
Sp
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A) Tie lines readings
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B) Generators output
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sh
Sp
C) Scheduled frequency indications
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D) Transformer load - ANSWER--A) Tie lines readings
la
sh
Sp
ne
Balancing Authority A is currently reading a system frequency of 60.00 Hz. Its Net
la
Actual Interchange is +100 MW and its Net Scheduled Interchange is +200 MW. If
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Balancing Authority A's frequency bias setting is 100 MW/0.1 Hz, what is ACE?
sh
Sp
ne
la
A) -100
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Sp
B) 0
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C) 10
a
tz
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D) 100 - ANSWER--A) -100
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Sp
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la
sh
Sp
la
Sp
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SOS NERC Prep - RElIABILITY Exam| 200
sh
QUESTIONS AND ANSWERS (VERIFIED
ne
ANSWERS)| GRADED A
la
tz
sh
Sp
ne
A Balancing Authority has a Net Interchange Schedule of -250 MWs from 1200 to
1600 on a summer day. The Net Interchange Actual for those same hours
la
respectively were -230 MW, -275 MW, -250 MW and -270 MW. What was the
sh
Sp
Balancing Authority's Inadvertent Interchange for the 4-hour period?
ne
la
tz
A) 6 MWs out
sh
Sp
ne
B) 25 MWs in
la
C) 25 MWs out
sh
Sp
D) 6 MWs in - ANSWER--B) 25 MWs in
ne
la
tz
For the ACE equation to work properly, dynamic schedules, pseudo ties,
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Sp
frequency, and all ________________ must be metered.
ne
la
sh
A) Generation
Sp
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B) Communications
la
tz
C) Transformers sh
Sp
D) Tie lines - ANSWER--D) Tie lines
ne
la
sh
If the frequency bias setting is set to a less negative value than the frequency
Sp
ne
response of a Balancing Authority and a frequency increase is caused by a sudden
loss of load in an external balancing area, what will be the result?
a
tz
l
sh
Sp
ne
A) The ACE will be zero and will take no AGC action
la
sh
Sp
la
Sp
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SOS NERC Prep - RElIABILITY Exam| 200
sh
QUESTIONS AND ANSWERS (VERIFIED
ne
la ANSWERS)| GRADED A
tz
sh
Sp
ne
la
B) The ACE will be a negative value and AGC will increase generation
sh
Sp
ne
C) The ACE will be a positive value and AGC will lower generation
la
tz
sh
Sp
ne
D)This will not affect the ACE - ANSWER--B) The ACE will be a negative value and
AGC will increase generation
la
sh
Sp
ne
If the frequency bias setting is less negative than the frequency response of a
la
Balancing Authority and a frequency decline is caused by a sudden loss of
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generation in an external balancing area, what will be the result?
sh
Sp
ne
la
A) The ACE will be a negative value and AGC will increase generation.
sh
Sp
ne
B) This will not affect the ACE.
la
tz
sh
Sp
ne
C) The ACE will be a positive value and AGC will lower generation.
la
sh
Sp
D) The ACE will be zero and will take no AGC action. - ANSWER--C) The ACE will be
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a positive value and AGC will lower generation.
a
tz
l
sh
Sp
It is the responsibility of which entity/entities to develop, maintain, and
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implement load shedding plans?
la
sh
Sp
la
Sp
SOS NERC Prep - RElIABILITY Exam| 200
sh
QUESTIONS AND ANSWERS (VERIFIED
ne
ANSWERS)| GRADED A
la
tz
sh
Sp
ne
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
la
change your scheduled frequency. Your Frequency Bias Setting is -100 MW/.1Hz.
sh
Sp
What action should you take?
ne
la
tz
A) Increase Net Interchange Schedule by 20 MWs.
sh
Sp
ne
la
B) Inform the Reliability Coordinator that you cannot participate in the time error
sh
correction.
Sp
ne
la
tz
C) Decrease Net Interchange Schedule by 20 MWs.
sh
Sp
ne
la
D) Increase Net Interchange Schedule by 10 MWs. - ANSWER--A) Increase Net
Interchange Schedule by 20 MWs.
sh
Sp
ne
la
A Balancing Authority has a sudden loss of a large block of load in its area. This
tz
sh
loss will be seen instantaneously in the change of which of the following values?
Sp
ne
la
1. Actual Net Interchange
sh
Sp
2. Scheduled Frequency
ne
3. Scheduled Net Interchange
a
tz
l
sh
4. Area Control Error
Sp
ne
la
sh
Sp
la
Sp
, ne
SOS NERC Prep - RElIABILITY Exam| 200
sh
QUESTIONS AND ANSWERS (VERIFIED
ne
ANSWERS)| GRADED A
la
tz
sh
Sp
A) 4 only
ne
la
B) 1 & 3
sh
Sp
C) 1 & 4
ne
D) 3 & 4 - ANSWER--C) 1 & 4
la
tz
sh
Sp
ne
Metered Data included in the calculation of ACE are: dynamic schedules, pseudo
ties, actual frequency, and all __________.
la
sh
Sp
ne
A) Tie lines readings
la
B) Generators output
tz
sh
Sp
C) Scheduled frequency indications
ne
D) Transformer load - ANSWER--A) Tie lines readings
la
sh
Sp
ne
Balancing Authority A is currently reading a system frequency of 60.00 Hz. Its Net
la
Actual Interchange is +100 MW and its Net Scheduled Interchange is +200 MW. If
tz
Balancing Authority A's frequency bias setting is 100 MW/0.1 Hz, what is ACE?
sh
Sp
ne
la
A) -100
sh
Sp
B) 0
ne
C) 10
a
tz
l
D) 100 - ANSWER--A) -100
sh
Sp
ne
la
sh
Sp
la
Sp
, ne
SOS NERC Prep - RElIABILITY Exam| 200
sh
QUESTIONS AND ANSWERS (VERIFIED
ne
ANSWERS)| GRADED A
la
tz
sh
Sp
ne
A Balancing Authority has a Net Interchange Schedule of -250 MWs from 1200 to
1600 on a summer day. The Net Interchange Actual for those same hours
la
respectively were -230 MW, -275 MW, -250 MW and -270 MW. What was the
sh
Sp
Balancing Authority's Inadvertent Interchange for the 4-hour period?
ne
la
tz
A) 6 MWs out
sh
Sp
ne
B) 25 MWs in
la
C) 25 MWs out
sh
Sp
D) 6 MWs in - ANSWER--B) 25 MWs in
ne
la
tz
For the ACE equation to work properly, dynamic schedules, pseudo ties,
sh
Sp
frequency, and all ________________ must be metered.
ne
la
sh
A) Generation
Sp
ne
B) Communications
la
tz
C) Transformers sh
Sp
D) Tie lines - ANSWER--D) Tie lines
ne
la
sh
If the frequency bias setting is set to a less negative value than the frequency
Sp
ne
response of a Balancing Authority and a frequency increase is caused by a sudden
loss of load in an external balancing area, what will be the result?
a
tz
l
sh
Sp
ne
A) The ACE will be zero and will take no AGC action
la
sh
Sp
la
Sp
, ne
SOS NERC Prep - RElIABILITY Exam| 200
sh
QUESTIONS AND ANSWERS (VERIFIED
ne
la ANSWERS)| GRADED A
tz
sh
Sp
ne
la
B) The ACE will be a negative value and AGC will increase generation
sh
Sp
ne
C) The ACE will be a positive value and AGC will lower generation
la
tz
sh
Sp
ne
D)This will not affect the ACE - ANSWER--B) The ACE will be a negative value and
AGC will increase generation
la
sh
Sp
ne
If the frequency bias setting is less negative than the frequency response of a
la
Balancing Authority and a frequency decline is caused by a sudden loss of
tz
generation in an external balancing area, what will be the result?
sh
Sp
ne
la
A) The ACE will be a negative value and AGC will increase generation.
sh
Sp
ne
B) This will not affect the ACE.
la
tz
sh
Sp
ne
C) The ACE will be a positive value and AGC will lower generation.
la
sh
Sp
D) The ACE will be zero and will take no AGC action. - ANSWER--C) The ACE will be
ne
a positive value and AGC will lower generation.
a
tz
l
sh
Sp
It is the responsibility of which entity/entities to develop, maintain, and
ne
implement load shedding plans?
la
sh
Sp
la
Sp
