HSI Final Test Exam Questions and well verified ANSWERS assured to pass 2026 UDATES!!!!!

HSI Final Test Exam Questions and well verified
ANSWERS assured to pass 2026 UDATES!!!!!
The initial response to a frequency deviation is due to which of the following

1. Load / frequency response

2. AGC

3. Governor action

4. Interchange schedules



•3 and 4

•1 and 2

•2 and 3

•1 and 3 - AANSWERS💫✔️-•1 and 3



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 - AANSWERS💫✔️-•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 - AANSWERS💫✔️-•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 - AANSWERS💫✔️-•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 - AANSWERS💫✔️-•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 - AANSWERS💫✔️-•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 - AANSWERS💫✔️-•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 - AANSWERS💫✔️-•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 - AANSWERS💫✔️-• -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 - AANSWERS💫✔️-•large capacity and small droop setting