Download PTU (Punjab Technical University) B.Tech (Bachelor of Technology) / BE (Bachelor of Engineering) 2021 January EE 7th Sem 71936 Power System Operation And Control Previous Question Paper

Total No. of Pages : 02

Total No. of Questions : 18

B.Tech. (EE) (2012 Onwards E-II) (Sem.?7)

POWER SYSTEM OPERATION AND CONTROL

Subject Code : BTEE-804A

M.Code : 71936

Time : 3 Hrs. Max. Marks : 60

INST RUCT IONS T O CANDIDAT ES :

1 .

SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks

each.

2 .

SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents

have to atte mpt any FOUR q ues tions.

3 .

SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents

have to atte mpt any T WO questio ns.

SECTION-A

Answer briefly :

1.

What is the objective of power system control?

2.

List out the various needs for frequency regulation in power system.

3.

What happens to frequency if the load on the generator increases?

4.

What is meant by control area?

5.

Define Area Control Error.

6.

What are the methods of increasing response in AVR?

7.

Define Spinning Reserve.

8.

Distinguish between economic dispatch and unit commitment.

9.

What do you mean by priority list method?

10. What is contingency analysis program?

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SECTION-B

11. Describe the factors affecting security.

12. Explain briefly the constraints on unit commitment problem.

13. Describe Security analysis.

14. Discuss the voltage stability of power system. What are the suitable effective counter

measures to prevent voltage instability?

15. Derive the necessary formula for active power scheduling taking into effect of transmission

loss and also derive the exact and approximate expressions for penalty factor.

SECTION-C

16. Derive the expression for transmission loss formula and state the assumptions if any to

derive this formula.

17. Derive the suitable mathematical formulation for voltage stability of a two bus radial

systems and correlate it with the PV curve for different values of power factor and QV

characteristics for different Values of P/Pmax.

18. Derive coordination equation for economic dispatch including losses, in the power system.

Give steps for economic dispatch calculation. Neglecting losses.

NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any

page of Answer Sheet will lead to UMC against the Student.

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This post was last modified on 26 June 2021