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Standard VIII
Physics
Amplitude, Frequency and Time Period
Load frequenc...
Question
Load frequency control uses
A
proportional controller alone
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B
integral controller alone
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C
both proportional and integral controllers
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D
either proportional or integral controller
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Solution
The correct option is
C
both proportional and integral controllers
both proportional and integral controllers.
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Similar questions
Q.
Load frequency control is achieved by properly matching the individual machine's
Q.
Consider the following statements regarding load frequency control:
1. Time constant of automatic load frequency control is about 15 seconds.
2. Integral control eliminates static frequency drop.
3. In tie-line load bias control, the control signal for each area is proportional to change in frequency as well as change in tie-line power.
Which of the statements given above are correct?
Q.
The main objectives of load frequency controller are to apply control of
1. frequency
2. real power exchange via the outgoing lines
3. reactive power exchange via the outgoing lines
4. bus voltages
Q.
An alternator operating at 50 Hz is delivering 40 MW power to a system. Due to increase in load, generation was increased by 5 MW using droop control with frequency value dropping by 0.50% of rated value. As load further increases, the frequency of operation becomes 49.20 Hz and hence the power supplied by alternator at this frequency will be
Q.
The main objectives of load frequency control in a power system are:
1. To bring the steady state error to zero after load change.
2. To maintain the net tie-line
3. To maintain voltage on all buses.
4. To economize the cost of generation
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