EE6603 Question Bank Power System Operation and Control
EE6603 Question Bank Power System Operation and Control Regulation 2013 Anna University free download. Power System Operation and Control Question Bank free pdf.
Sample EE6603 Question Bank:
1. What is the major control loops used in large generators?
The major control loops used in large generators are
1. Automatic voltage regulator (AVR)
2. Automatic load frequency control (ALFC).
2. What is the use of secondary loop?
A slower secondary loop maintains the fine adjustment of the frequency, and also by reset action maintains proper MW interchange with other pool members. This loop is insensitive to rapid load and frequency changes but focuses instead on drift like changes which take place over periods of minutes.
3. What is the adv of AVR loop over ALFC?
AVR loop is much faster than the ALFC loop and therefore there is a tendency, for the VR dynamics to settle down before they can make themselves felt in the slower load frequency control channel.
4. What is the diff. between large and small signal analysis?
Large signal analysis is used where voltage and power may undergo sudden changes of magnitude that may approach 100 percent of operating values. Usually this type of analysis leads to differential equations of non-linear type. Small signal anaysis is used when variable excursions are relatively small, typically at most a few percent of normal operating values.
5. What is the exciter?
The exciter is the main component in AVR loop. It delivers the DC power to the generator field. It must have adequate power capacity and sufficient speed of response (rise time less than 0.1 sec).
6. What is the function of AVR?
The basic role of the AVR is to provide constancy of the generator terminal voltage during normal, small and slow changes in the load.
|Subject Name||Power System Operation and Control|
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