WITH EFFECT FROM THE ACADEMIC YEAR 2012 - 2013

EE 301

POWER SYSTEMS - II

Instruction                                             4              Periods per week

Duration of University Examination     3              Hours

University Examination                         75            Marks

Sessional                                                25            Marks

UNIT-I

Transmission Line theory: Short, medium, long lines- Line calculations, Tuned Lines-Power Circle Diagrams and their applications. Corona: Causes- Disruptive and Visual Critical Voltages, Power loss -minimization of Corona effects.

UNIT-II

Voltage Control: Phase Modifiers, Induction Regulators -Tap Changing

Transformers, Series and Shunt Capacitance. Reactive Power Requirement

Calculations. Static Var Compensators-Thyristor Controlled Reactors-

Thyristor Switched Capacitors.

UNIT-III

Per Unit System of Representation: Use of per unit quantities in power systems, Advantages of per unit system. Symmetrical Three Phase transients in R-L series circuits- Short Circuit Currents - Reactance of Synchronous Machines- Symmetrical Fault Calculations. Short circuit capacity of a bus.

UNIT-IV

Unsymmetrical Faults: Symmetrical components of unsymmetrical phasors -Power in terms of symmetrical components -sequence impedance and sequence networks. Sequence networks of unloaded generators - Sequence impedances of circuit elements -Single line to ground, line-to-line and double line to ground faults on unloaded generator- Unsymmetrical faults of power systems.

UNIT-V

Transients in Power Systems: Causes of over voltages. Travelling Wave Theory -Wave equation -Open Circuited Line -The short circuited line

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