HSI FINAL PAPER BUNDLE 2026
COMPLETE TEST BANK WITH VERIFIED
ANSWERS
⩥ EMS and AGC have failed at 12:25 and generation must be controlled
manually. The operator calculates ACE to be +25 MWs. Load is
expected to increase 100 MWs, and imports will increase by 75 MWs at
the top of the hour. What should the operator do?
•Maintain current generation level
•Decrease generation by 25 MWs
•Decrease generation by 50 MWs
•Increase generation by 25 MW. Answer: •Decrease generation by 25
MWs
⩥ How is the Frequency Response Measure (FRM) of a Balancing
Authority determined?
•lt is the average of the BA's frequency response for all the frequency
deviations of the previous year
•lt is the change in the BA's Net Interchange Actual for the largest
frequency deviation during the previous year
•lt is the previous year's Control Performance Standard 1 ( CPS1 ) score
,•It is the median of the BA's frequency response for the frequency
deviation events identified by NERC for the previous year. Answer: •It is
the median of the BA's frequency response for the frequency deviation
events identified by NERC for the previous year
⩥ Sufficient Operating Reserve is defined as the capacity required to
meet what?
•DOE specifications
•CPS and DCS
•CPS 1 & 2 only
•Capacity Standard. Answer: •CPS and DCS
⩥ In your Interconnection , a generator tripped that was large enough to
reduce the frequency from 60.00 Hz to 59.94 Hz . Your Balancing
Authority's Frequency Bias is -200 MW / 0.1 Hz . How many MW
would your system initially contribute to frequency support?
•120 MW
•80 MW
•100 MW
•200 MW. Answer: •120 MW
,⩥ Interconnection frequency is 59.80 Hz . Your ACE is a large negative
value and your AGC is pulsing your units down . What should you do
•Leave AGC in operation but investigate
•Place AGC in constant frequency control
•Place AGC in flat tie line control
•Suspend AGC and investigate. Answer: •Suspend AGC and investigate
⩥ When a Balancing Authority's ACE value is the same sign as the
frequency deviation , which NERC control performance score is affected
negatively
•DCS
•CPS 1
•TEC
•BAAL. Answer: •CPS 1
⩥ Correct Of the following , which control system would be affected by
a difference in Net Actual Interchange and Net Scheduled Interchange
•Reactive Control
•Turbine Governor Control
•Automatic Generation Control
, •Automatic Voltage Regulator. Answer: •Automatic Generation Control
⩥ Balancing Authority A is currently reading a system frequency of
59.98 Hz . Its Net Actual Interchange is +100 MW and its Net Scheduled
Interchange is +100 MW . If Balancing Authority A's frequency bias
setting is 100 MW / 0.1 HZ , what is ACE
• -20
•20
•2
•0. Answer: • -20
⩥ A Balancing Authority has twenty units on governor control . The
units have different capacities that range from 200 MW to 1000 MW and
droop settings from 2 % to 5 % . The biggest adjustments in megawatt
output in response to a frequency disturbance will be provided by units
that have _______________?
•large capacity and small droop setting
•large capacity and large droop setting
•small capacity and small droop setting
•small capacity and large droop setting. Answer: •large capacity and
small droop setting
COMPLETE TEST BANK WITH VERIFIED
ANSWERS
⩥ EMS and AGC have failed at 12:25 and generation must be controlled
manually. The operator calculates ACE to be +25 MWs. Load is
expected to increase 100 MWs, and imports will increase by 75 MWs at
the top of the hour. What should the operator do?
•Maintain current generation level
•Decrease generation by 25 MWs
•Decrease generation by 50 MWs
•Increase generation by 25 MW. Answer: •Decrease generation by 25
MWs
⩥ How is the Frequency Response Measure (FRM) of a Balancing
Authority determined?
•lt is the average of the BA's frequency response for all the frequency
deviations of the previous year
•lt is the change in the BA's Net Interchange Actual for the largest
frequency deviation during the previous year
•lt is the previous year's Control Performance Standard 1 ( CPS1 ) score
,•It is the median of the BA's frequency response for the frequency
deviation events identified by NERC for the previous year. Answer: •It is
the median of the BA's frequency response for the frequency deviation
events identified by NERC for the previous year
⩥ Sufficient Operating Reserve is defined as the capacity required to
meet what?
•DOE specifications
•CPS and DCS
•CPS 1 & 2 only
•Capacity Standard. Answer: •CPS and DCS
⩥ In your Interconnection , a generator tripped that was large enough to
reduce the frequency from 60.00 Hz to 59.94 Hz . Your Balancing
Authority's Frequency Bias is -200 MW / 0.1 Hz . How many MW
would your system initially contribute to frequency support?
•120 MW
•80 MW
•100 MW
•200 MW. Answer: •120 MW
,⩥ Interconnection frequency is 59.80 Hz . Your ACE is a large negative
value and your AGC is pulsing your units down . What should you do
•Leave AGC in operation but investigate
•Place AGC in constant frequency control
•Place AGC in flat tie line control
•Suspend AGC and investigate. Answer: •Suspend AGC and investigate
⩥ When a Balancing Authority's ACE value is the same sign as the
frequency deviation , which NERC control performance score is affected
negatively
•DCS
•CPS 1
•TEC
•BAAL. Answer: •CPS 1
⩥ Correct Of the following , which control system would be affected by
a difference in Net Actual Interchange and Net Scheduled Interchange
•Reactive Control
•Turbine Governor Control
•Automatic Generation Control
, •Automatic Voltage Regulator. Answer: •Automatic Generation Control
⩥ Balancing Authority A is currently reading a system frequency of
59.98 Hz . Its Net Actual Interchange is +100 MW and its Net Scheduled
Interchange is +100 MW . If Balancing Authority A's frequency bias
setting is 100 MW / 0.1 HZ , what is ACE
• -20
•20
•2
•0. Answer: • -20
⩥ A Balancing Authority has twenty units on governor control . The
units have different capacities that range from 200 MW to 1000 MW and
droop settings from 2 % to 5 % . The biggest adjustments in megawatt
output in response to a frequency disturbance will be provided by units
that have _______________?
•large capacity and small droop setting
•large capacity and large droop setting
•small capacity and small droop setting
•small capacity and large droop setting. Answer: •large capacity and
small droop setting
