Power System Operation & Control (PSOC) SPPU Endsem Question Paper Nov 2023
All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.
- Subject code
- 403141
- Pattern
- 2019 pattern
- Exam
- Endsem
- Session
- Nov 2023
- Max. marks
- 70
- Time
- 2½ Hours
- Semester
- VII
- Paper code
- [6181]-125
Printed for: B.E. (Electrical Engineering)
Instructions to the candidates
- Solve Q.1 or Q.2; Q.3 or Q.4; Q.5 or Q.6; Q.7 or Q.8.
- Figures to the right indicate full marks.
- Neat diagrams must be drawn wherever necessary.
- Assume suitable additional data, if necessary.
- Use of a non-programmable calculator is allowed.
Questions
Q1
- a)[4]
Comment on : The necessity of automatic generation control.
Also asked:Nov 2025
- b)[6]
Explain following concepts i) Control area concept ii) Area control error
- c)[8]
Explain the working of the speed governor system of the turbo generator with a schematic diagram.
OR- a)
Q2
- a)[4]
Draw the complete transfer function block diagram representing single are load frequency control including the speed governing model, turbine model and generator load model.
- b)[6]
Draw and explain the complete block diagram of proportional and integral load frequency control of an isolated power system.
- c)[8]
Explain the steady state analysis of single area load frequency control along with its block diagram and two cases: Case i) When the speed changer has a fixed setting and load demand is varying Case ii) When load demand is fixed and the speed changer setting is varying
- a)
Q3
- a)[4]
Explain the heat rate curve and cost curve of a thermal generating unit.
- b)[6]
Discuss the economic scheduling of thermal plants (method of Lagrange’s multiplier) neglecting the effect of transmission losses.
- c)[7]
This part has equations that don’t show as text. Open the PDF to read it.
OR- a)
Q4
- a)[4]
Discuss hydro constraints and thermal constraints used for Unit Commitment.
- b)[6]
Discuss the economic scheduling of thermal plants considering the effect of transmission losses.
- c)[7]
This part has equations that don’t show as text. Open the PDF to read it.
- a)
Q5
ORQ6
Q7
- a)[4]
Draw the QV curve with appropriate labeling showing stable and unstable regions.
- b)[6]
What happens when there is voltage instability in the power system? Explain in detail.
- c)[7]
Why voltage stability study has to gain importance in the power system study? Explain.
OR- a)
Q8
- a)[4]
Draw the PV curve with appropriate labeling showing a stable-unstable region.
- b)[6]
What observations were obtained from the PV curve? Enlist the disadvantages of the PV curve.
- c)[7]
Give the detailed classification of the voltage stability based on the time frame and based on nature of the disturbance.
- a)