HSI Final Test Questions With Correct
Answers
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 - CORRECT ANSWER✔✔-•1 and 3
| | | | | | |
EMS and AGC have failed at 12:25 and generation must be controlled manually.
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The operator calculates ACE to be +25 MWs. Load is expected to increase 100
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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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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
| | | | |
Answers
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 - CORRECT ANSWER✔✔-•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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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
| | | | |
