Power System Operation & Control (PSOC) SPPU Insem Question Paper Sep 2023

Questions

1. Q1

   1. a)

      Obtain swing equation of synchronous machine. Draw a plot of power angle verses time for stable as well as unstable system.

      [7]
   2. b)

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

      [8]
   OR

2. Q2

   1. a)

      List out the methods of improving stability of power system. And explain any three methods in detail.

      [7]
   2. b)

      Derive an expression for the critical clearing angle for a power system consisting of single machine supplying to infinite bus through a double circuit line. Assume three phase line to ground fault occur at middle of line 2. 2

      [8]

3. Q3

   1. a)

      Explain the principle of working of static synchronous compensator (STATCOM) with neat diagram. What are its advantages.

      [7]
   2. b)

      Write a short notes on any TWO: i) Shunt compensation in power system. ii) Series compensation in power system. iii) Problem associated with series compensation.

      [8]
   OR

4. Q4

   1. a)

      Explain in short reactive power generation by synchronous machine. Explain loading capability of synchronous generator with neat diagram.

      [7]
   2. b)

      Explain the principle of operation of Fixed capacitor thyristor controlled reactor (FC-TCR) with neat diagram. Draw its VI characteristics.   

      [8]