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PSOC Set1

This document outlines the examination structure for the Power System Operation and Control course at Vignana Bharathi Institute of Technology, including topics covered in both Part-A and Part-B. It includes various questions related to heat rate curves, hydro-thermal scheduling, transmission line losses, and SCADA systems. The exam is scheduled for December 2022, lasting 3 hours with a maximum score of 70 marks.

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17 views2 pages

PSOC Set1

This document outlines the examination structure for the Power System Operation and Control course at Vignana Bharathi Institute of Technology, including topics covered in both Part-A and Part-B. It includes various questions related to heat rate curves, hydro-thermal scheduling, transmission line losses, and SCADA systems. The exam is scheduled for December 2022, lasting 3 hours with a maximum score of 70 marks.

Uploaded by

KAVYA
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Subject Code: 19EE4112

R19
VIGNANA BHARATHI INSTITUTE OF TECHNOLOGY
(AUTONOMOUS)
IV B.Tech I Semester Regular Examinations, December-2022
POWER SYSTEM OPERATION AND CONTROL
(EEE)
Time: 3 Hours Max. Marks: 70
PART-A 20 Marks

1. a. Explain heat rate curve 2 Marks


b. Explain incremental fuel cost 2 Marks
c. Explain hydro thermal scheduling problem 2 Marks
d. List the constraints on hydro thermal scheduling problem 2 Marks
e. Write the transfer function of turbine 2 Marks
f. Explain the function of speed governor 2 Marks
g. Define control area 2 Marks
h Explain frequency bias control 2 Marks
i. Define SCADA 2 Marks
j. Explain the operating states of power system 2 Marks

PART-B 50 Marks

2. a. Derive the expression for Transmission line loss by neglecting losses. 5 Marks
b. In a thermal power station, incremental costs are given by the following 5 Marks
equations:
dC1/dP1 = Rs. (0.15P1 + 15)
dC2/dP2 = Rs. (0.05P2 + 18)
dC3/dP3 = Rs. (0.21P3 + 20)
Where P1, P2 and P3 are the loads in MW. Determine the economical load
allocation between the three units, when the total load on the station is 350
MW.
OR
3. a. Derive the expression for Transmission line loss by considering losses. 5 Marks
b. Describe the following terms with suitable examples i) Cost curve 5 Marks
ii) Production cost iii) Penalty factor.

4. a. Write short notes on types of hydrothermal scheduling. 5 Marks


b. What do you mean by optimal scheduling of hydro-Thermal system? Discuss in 5 Marks
detail
OR
5. a. Derive the expression for long range Hydro thermal scheduling. 5 Marks
b. Explain short term hydrothermal scheduling problem 5 Marks
6. a. Derive the transfer function of the speed governor system 5 Marks
b. Derive the state space 2nd order model of synchronous machine. 5 Marks
OR
7. a. Derive the transfer function of IEEE type-1 excitation system. 5 Marks
b. Discuss about the first order turbine model 5 Marks

8. a. Explain why we have to maintain constant frequency 5 Marks


b. Analyze the dynamic response for single area power system 5 Marks
OR
9. a. Develop tie line transfer function 5 Marks
b. Discuss economic dispatch combined with LFC 5 Marks

10. a. Explain Need of SCADA in Power system applications. 5 Marks


b. Explain optical and Microwave communications related to SCADA 5 Marks
OR
11. a. Illustrate the advantages of SCADA 5 Marks
b. Explain Importance of computer control in Power systems 5 Marks

-o0o-

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