52118-mt----reactive Power Compensation & Management

NR

Code No: 52118/MT M.Tech. – I Semester Supplementary Examinations, September, 2008 REACTIVE POWER COMPENSATION & MANAGEMENT (Electrical Power Systems) Time: 3hours

Max. Marks:60 Answer any FIVE questions All questions carry equal marks ---

1.a) b)

Explain the objectives of reactive power compensation. Illustrate with an example, load compensator as a power factor correction of un symmetrical loads.

2.a) b)

Explain the passive and active compensators. Discuss the objectives and limitations of series compensators.

3.

Explain in details of transient state reactive power compensation in transmission system by using shunt and series compensation.

4.a) b)

Explain the need of reactive power management. Describe the effect of harmonies and radio frequency on reactive power compensation.

5.a) b)

Explain the demand side management load shaping. Discuss the various power tariffs.

6.

Discuss in detail of the various methods for loss reduction.

7.a) b)

What are the purposes of using capacitors as compensators. Briefly discuss how to select a capacitor for user side reactive power management.

8.a)

Discuss the various types of railway electric system with neat diagrams. Explain the problems in the quality of electrical supply.

b)

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