Power System Operation & Control (PSOC) SPPU Endsem Question Paper Nov 2022
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 2022
- Max. marks
- 70
- Time
- 2½ Hours
- Semester
- VII
- Paper code
- [5927]-355
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 alowed.
Questions
Q1
ORQ2
- a)[4]
Draw the schematic diagram of the steam turbine speed governor system indicating all its components.
- b)[6]
Draw the complete block diagram of single area load frequency control. Write the associated equations of the speed governor system, turbine model, and generator load model.
- c)[8]
Explain the block diagram as well as the frequency response of the proportional plus integral controller in the single area load frequency control.
Also asked:Nov 2025
- a)
Q3
- a)[4]
What is the concept of unit commitment in the power system? Explain the need for Unit Commitment.
- b)[6]
This part has equations that don’t show as text. Open the PDF to read it.
- c)[7]
Determine the Priority list method using full-load average production cost for the data given below. If the load demand is 1100 MW, which units should be prioritized? Comment. Unit No. Loading Limits Heat rate curve Fuel Cost Parameters (Ki) (Rs/kCal) Min Max a b c (MW) (MW) 1 80 400 0.007 2 300 1.1 2 20 300 0.01 3 200 1.2 3 120 500 0.003 7 100 1.0
OR- a)
Q4
- a)[4]
Define the Economic Load Dispatch (ELD) studies in the power system.
- b)[6]
This part has equations that don’t show as text. Open the PDF to read it.
- c)[7]
This part has equations that don’t show as text. Open the PDF to read it.
- a)
Q5
- a)[4]
What is the interconnection of the power system? State its advantages.
- b)[6]
Consider that there are two cities A and B operating in different time zone. It is required to transmit the power from city A to city B when there is an increase in load demand at city B at different time spans. How the interchange of power takes place? Explain in detail.
- c)[8]
Explain the concept of a power pool in energy control. What are the potential advantages associated with a power pool? Explain. Also, discuss constraints related to the power pool. 3
OR- a)
Q6
Q7
- a)[4]
Draw the QV curve with appropriate labeling showing stable and unstable regions. What is the use of the QV curve in voltage stability study?
- b)[6]
Explain the following voltage stability indices with their formula: i) Fast Voltage Stability Index (FVSI) ii) Line Stability Index (L mn ) iii) Line stability factor (LQP)
Also asked:Nov 2025
- c)[7]
What happens when there is voltage instability in the power system? Explain in detail.
OR- a)
Q8
- a)[4]
- b)[6]
Give the detailed classification of the voltage stability based on the time frame and based on nature of the disturbance.
- c)[7]
Derive the expression of the power-voltage relationship for drawing the PV curve in detail and hence draw the PV curve with appropriate labeling showing stable-unstable region.