CONTAINS 4 DIFFERENT ALREADY
TESTED VERSIONS WITH EXPERT
VERIFIED QUESTIONS AND ANSWERS |
GUARANTEED PASS| ALREADY GRADED A
1. 1. A BA has an average ACE of -75MW during one clock ten-minute period.
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There L10 is 50MW. Which NERC Control Performance Standard has been
gy gy gy gy gy gy gy gy gy gy gy
violated?
gy
a. CPS1
b. CPS2
c. DCS
d. SOL
Ans: b.CPS2 gy gy
2. 2. The ACE equation must include metered data: dynamic
g y g y g y g y g y g y g y g y
gschedules, pseudo ties, actual frequency, and all . a. Generation
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b. Transformers
gy gy
,c. Tielines y
g
d. Communications
Ans:c.TieLines y
g y
g y
g
3. 3. A BA has a sudden change in demand-supply balance due to a sudden loss
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of load or generation in their area. The sudden change will be seen
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instantaneously in which calculated value? a. Frequency
gy gy gy gy gy gy gy
b. systemlambda y
g
c. operatingreserves y
g
d. ACE
Ans:d.ACE gy y
g
4. 4. An external generator tripped that was large enough to reduce the
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frequency from 60.00 Hz to 59.94 Hz. Your BA's Frequency Bias is 200 MW/0.1 Hz.
gy y
g y
g y
g y
g y
g y
g y
g y
g y
g y
g y
g y
g y
g gy
How many MW would your system initially contribute to frequency support? a.
gy gy gy gy gy gy gy gy gy gy gy gy
80 MW
gy gy
b. 100MW gy
c. 200MW gy
d. 120MW gy
Ans:d.120MW gy gy gy
5. 5.BA-Aiscurrentlyreadinga systemfreqof59.95Hz.Its NetActual
gy y
g gy gy gy gy gy gy gy gy gy gy y
g
gy gy
,Interchange is +100 MW and its Net Scheduled Interchange is +120 MW. If BA- gy gy gy gy gy gy gy gy gy gy gy gy gy
A's freq biassettingis -100 Mw,BA-A'sAGCis pulsingits generators to
gy gy gy gy gy gy gy y
g gy gy gy gy gy
.
a. RemainatcurrentMWoutput level gy y
g y
g gy gy
b. IncreaseMWoutput y
g y
g
c. DecreaseMWoutput y
g y
g
d. Increaseexcitationonthefieldwindings y
g y
g y
g y
g gy
Ans:b.IncreaseMWoutput
gy gy y
g y
g
6. 6. Which control system on the generators would respond to a drop in
gy gy gy gy gy gy gy gy gy gy gy g y
system freq resulting from the loss of generation? a. Generator governor
gy gy gy gy gy gy gy gy gy gy gy
control system
gy gy
b. Differentialrelaysystems y
g y
g
c. Specialprotectionsystems y
g y
g
d. AutomaticVoltageRegulators y
g y
g
Ans:a.Generatorgovernorcontrolsystem
y
g y
g y
g y
g y
g
7. 7. Load increases or decreases in relation to the increase or decrease in
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frequency. It has been determined that for every 1% change in freq, load will
gy gy gy gy gy gy gy gy gy gy gy gy gy gy
changeapprox
gy %iinthesamedirectioninanInterconnectedsystem.
y
g y
g gy gy gy gy y
g gy y
g
a. 1
b. 2
c. 5
d. 3
Ans: b.2 (3 if it is pure motor load)
gy gy gy gy gy gy gy gy gy
8. 8. A BA has several units on governor control. The units have different
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capacities that range from 200 MW to 1000 MW and droop settings from 2% to 5%.
gy gy gy gy gy gy gy gy gy gy gy gy gy gy gy gy
gy gy
, gy The biggest adjustments in MW output in response to a freq disturbance will be
gy gy gy gy gy gy gy gy gy gy gy gy gy
gy provided by units that have . a. large capacity;
gy gy gy gy gy y
g y
g y
g
gy large droop setting gy gy
b. largecapacity;smalldroopsetting y
g gy y
g y
g
c. smallcapacity;largedroopsetting y
g y
g y
g gy
d. small capacity; small droop setting gy gy gy g y
Ans: b. large capacity; small droop setting 9.
g y g y g y g y g y g y g y
9. A BA that is operating asynchronously (separated from the gy gy gy gy gy gy gy gy
interconnection) should switch its AGC to which mode? a. tie line bias control
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b flat tie line control
gy gy gy gy gy
c. flatfrequencycontrol
gy gy gy
d.manualcontrol
y
g gy
Ans:c.flatfrequencycontrol gy gy gy gy
10. 10. If the BA selling power to an end user enters the wrong schedule for the
gy gy gy gy gy gy gy gy gy gy gy gy gy gy gy
upcoming hour, which part of theACE equatio [ACE = (NIA- NIS) - 10B(FA
gy gy gy gy gy gy y
g gy gy gy gy gy gy gy gy
gy gy