EE 3037 Power System Transients question papers

Question papers

• November/December 2024

  Question paper code 41026

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Syllabus

1. Unit 1: Introduction and Survey9 hours

   Sources of different types of transients · RL circuit transient with sine wave excitation · double frequency transients · basic transforms of the RLC circuit transients · study of transients in system planning · Importance of grounding

2. Unit 2: Switching Transients9 hours

   Basic concept of switching transients · resistance switching and equivalent circuit for interrupting the resistor current · load switching and equivalent circuit · waveforms for transient voltage across the load and the switch · normal and abnormal switching transients · Current suppression · current chopping · effective equivalent circuit · capacitance switching with a restrike · with multiple restrikes · ferro resonance

3. Unit 3: Lightning Transients9 hours

   Theories of cloud formation · mechanism of lightning discharges and characteristics of lightning strokes · model for lightning stroke · factors contributing to good line design · protection using ground wires · tower footing resistance · Interaction between lightning and power system

4. Unit 4: Traveling Waves on Transmission Line Computation of Transients9 hours

   Computation of transients · transient response of systems with series and shunt lumped parameters and distributed lines · Traveling wave concept · step response · Bewely's lattice diagram · standing waves and natural frequencies · reflection and refraction of travelling waves · Computation of overvoltages using EMTP

5. Unit 5: Transients in Integrated Power System9 hours

   The short line and kilometric fault · distribution of voltages in a power system · Line dropping and load rejection · voltage transients on closing and reclosing lines · overvoltage induced by faults · switching surges on integrated system · Qualitative application of EMTP for transient computation