NERC TEST QUESTIONS AND ANSWERS A+
GRADED. Buy Quality Materials!
ACE is same sign as Frequency Error =
Hindering the connection and CPS1 scores affected negatively
FRM =
Median of BA's frequency response for freq deviations for previous year
What portion of ACE contributes to Inadvertent Interchange ?
Interchange and Frequency
Each BA shall agree with adjacent BA's by end of day about what?
Hourly values of Net Interchange Schedules and Hourly Integrated MWh values of Net
Actual Interchange
If frequency, volt, and/or phase angle difference are too great, what should you
do and in which order?
Redispatch generation, reconfigure system, shed load
NERC requires reporting after shedding at least how much firm load?
100 MW
BA operating asynchronously should switch AGC to what mode?
Flat Frequency Control
What is an Energy Emergency?
Not being able to meet load requirements
What is appropriate use for Pseudo-Tie?
Used to reflect jointly owned generation in another BA in ACE
Can scheduled interchange exceed capability regardless of flow?
No
What happens to relationship between Current and Voltage when system is
Capacitive?
Current leads voltage and voltage is raised
Generation Operator shall comply with who?
TO and BA
How is MVAR output of generator increased?
By increasing DC current to field windings
Must the Generation Operator inform the TO of its status?
Yes
How to calculate how much interchange to curtail to get desired loading relief?
MW of relief needed/PTDF
What is Net scheduled frequency changed to for time error correction, fast and
slow?
59.98 for fast, 60.02 for slow
For every 1% change in frequency how much change in load and in what
direction?
2% change in load in same direction
EEA 1
, All available generation resources used, non-firm sales curtailed. Declared if BA has all
gen used for firm load, firm commitments, and reserve commitments. concerned about
sustaining contingency reserves.
EEA 2
Load management procedures. Declared if BA no longer able to provide expected
energy requirements and is energy deficient. Still able to maintain contingency reserves
EEA 3
Declared if BA is unable to meet min contingency reserves. Load shedding imminent or
in progress
Contingency Event Recovery Period
15 minutes to return ACE to pre-disturbance value
Contingency Event Restoration Period
90 minutes from end of Recovery Period
What is most important to load forecasts?
Weather forecast
What is produced during GMD events?
Low frequency induced current
Power Factor
real power (MW)/apparent power (MVA)
When frequencies on either side of open breaker are exactly matched the phase
angle is what?
Constant
Who must approve Reliability Adjustment Arranged Interchange before its
confirmed?
Source and Sink BAs
Who is NOT involved in Arranged Interchange?
RC
Who is involved in Arranged Interchange?
BA and Transmission Service Provider
Who can Interchange schedules be implemented between?
Adjacent BAs
Transient Instability occurs when power angles exceed what degree?
90 degrees
Voltage Reduction on Transmission system is permitted only when?
System is separated from interconnection
How is FRO determined?
adding individual FRO's of each member
BAAL-001 states BAs clock minute average of reporting ACE must not exceed its
BAAL for more than how many minutes?
30 consecutive minutes
What happens if frequency bias setting is MORE negative than actual frequency
response?
ACE is negative and AGC increases generation
What happens if frequency bias setting is LESS negative than actual frequency
response?
ACE is positive and AGC decreases generation
GRADED. Buy Quality Materials!
ACE is same sign as Frequency Error =
Hindering the connection and CPS1 scores affected negatively
FRM =
Median of BA's frequency response for freq deviations for previous year
What portion of ACE contributes to Inadvertent Interchange ?
Interchange and Frequency
Each BA shall agree with adjacent BA's by end of day about what?
Hourly values of Net Interchange Schedules and Hourly Integrated MWh values of Net
Actual Interchange
If frequency, volt, and/or phase angle difference are too great, what should you
do and in which order?
Redispatch generation, reconfigure system, shed load
NERC requires reporting after shedding at least how much firm load?
100 MW
BA operating asynchronously should switch AGC to what mode?
Flat Frequency Control
What is an Energy Emergency?
Not being able to meet load requirements
What is appropriate use for Pseudo-Tie?
Used to reflect jointly owned generation in another BA in ACE
Can scheduled interchange exceed capability regardless of flow?
No
What happens to relationship between Current and Voltage when system is
Capacitive?
Current leads voltage and voltage is raised
Generation Operator shall comply with who?
TO and BA
How is MVAR output of generator increased?
By increasing DC current to field windings
Must the Generation Operator inform the TO of its status?
Yes
How to calculate how much interchange to curtail to get desired loading relief?
MW of relief needed/PTDF
What is Net scheduled frequency changed to for time error correction, fast and
slow?
59.98 for fast, 60.02 for slow
For every 1% change in frequency how much change in load and in what
direction?
2% change in load in same direction
EEA 1
, All available generation resources used, non-firm sales curtailed. Declared if BA has all
gen used for firm load, firm commitments, and reserve commitments. concerned about
sustaining contingency reserves.
EEA 2
Load management procedures. Declared if BA no longer able to provide expected
energy requirements and is energy deficient. Still able to maintain contingency reserves
EEA 3
Declared if BA is unable to meet min contingency reserves. Load shedding imminent or
in progress
Contingency Event Recovery Period
15 minutes to return ACE to pre-disturbance value
Contingency Event Restoration Period
90 minutes from end of Recovery Period
What is most important to load forecasts?
Weather forecast
What is produced during GMD events?
Low frequency induced current
Power Factor
real power (MW)/apparent power (MVA)
When frequencies on either side of open breaker are exactly matched the phase
angle is what?
Constant
Who must approve Reliability Adjustment Arranged Interchange before its
confirmed?
Source and Sink BAs
Who is NOT involved in Arranged Interchange?
RC
Who is involved in Arranged Interchange?
BA and Transmission Service Provider
Who can Interchange schedules be implemented between?
Adjacent BAs
Transient Instability occurs when power angles exceed what degree?
90 degrees
Voltage Reduction on Transmission system is permitted only when?
System is separated from interconnection
How is FRO determined?
adding individual FRO's of each member
BAAL-001 states BAs clock minute average of reporting ACE must not exceed its
BAAL for more than how many minutes?
30 consecutive minutes
What happens if frequency bias setting is MORE negative than actual frequency
response?
ACE is negative and AGC increases generation
What happens if frequency bias setting is LESS negative than actual frequency
response?
ACE is positive and AGC decreases generation
