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EndsemNov 20242019 patternBE Electrical

Power System Operation & Control (PSOC) SPPU Endsem Question Paper Nov 2024

All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated PSOC questions
Subject code
403141
Pattern
2019 pattern
Exam
Endsem
Session
Nov 2024
Max. marks
70
Time
2½ Hours
Semester
VII
Paper code
[6354]-508

Printed for: B.E. (Electrical Engineering)

Instructions to the candidates

  1. Solve Q1 or Q2, Q3 or Q4, Q5 or Q6, Q7 or Q8.
  2. Figures to the right indicate full marks.
  3. Neat diagrams must be drawn wherever necessary.
  4. Assume suitable additional data, if necessary.
  5. Use of non-programmable calculator is allowed.

Questions

  1. Q1

    1. a)

      Explain the concept of automatic generation and control in a power system.

      [4]
    2. b)

      Explain the droop characteristics of the speed governor system.

      Also asked:May 2024 ·May 2023

      [6]
    3. c)

      Explain with a block diagram the working of a proportional plus integral load frequency controller for an isolated power system.

      Also asked:May 2025 ·Nov 2023 ·May 2023

      [8]

  2. Q2

    1. a)

      List out the reasons for limiting the frequency deviations.

      [4]
    2. b)

      Write a short note on i) Speed governing model. ii) Turbine model.

      [6]
    3. c)

      Draw a schematic diagram illustrating the two-area load frequency scheme label and functions of the key components.

      [8]

  3. Q3

    1. a)

      Explain the incremental cost curve of a thermal generating unit with a neat diagram.

      Also asked:May 2025 ·May 2024 ·Nov 2023 ·May 2023

      [3]
    2. b)

      Define the following term i) Minimum up time ii) Minimum down time iii) Spinning reserve

      [6]
    3. c)

      Explain with mathematical formulation, the economic load dispatch without transmission loss and including equality constraints of meeting load. 2

      Also asked:May 2025

      [8]

  4. Q4

    1. a)

      Define term loss coefficient ( β mn ).

      [3]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [6]
    3. c)

      State various methods of unit commitment and explain the “Priority list method” of unit commitment with one example.

      Also asked:Nov 2025 ·May 2025 ·May 2024 ·May 2023

      [8]

  5. Q5

    1. a)

      What factors influence the magnitude and direction of power flow between interconnected utilities?

      [4]
    2. b)

      What protocols or agreements govern for emergency power interchange between utilities during grid emergencies?

      [6]
    3. c)

      What are power pools and how do they function in the context of regional or multi-state power markets?

      [8]

  6. Q6

    1. a)

      What factors contribute to an inadvertent power exchange between interconnected grids?

      [4]
    2. b)

      Explain the economic interchange between interconnected utilities with an example.

      Also asked:May 2024 ·May 2023

      [6]
    3. c)

      What is energy banking and how does it facilitate power exchange between utilities?

      Also asked:May 2025

      [8]

  7. Q7

    1. a)

      What is voltage collapse?

      [3]
    2. b)

      What are common voltage stability indices used in power system analysis?

      [6]
    3. c)

      State the procedure to draw a QV curve. What information does the QV curve provide?

      [8]

  8. Q8

    1. a)

      How does variation in load demand affect voltage stability in the power system?

      [4]
    2. b)

      What is the PV curve and how is it used to analyze the voltage stability in the transmission system?

      [7]
    3. c)

      How does steady-state voltage stability differ from dynamic voltage stability? 

      [6]