EE6002 POWER SYSTEM TRANSIENTS SYLLABUS, QUESTION PAPERS

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EE6002 POWER SYSTEM TRANSIENTS SYLLABUS- 
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EE2027 POWER SYSTEM TRANSIENTS APRIL/MAY-2011-QUESTION PAPER-
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EE6002  PST IMPORTANT QUESTION MAY/JUNE-2016

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EE6002                                   POWER SYSTEM TRANSIENTS                             LT P C

3 0 0 3

 OBJECTIVES:

·    To study the generation of switching transients and their control using circuit – theoretical concept.

·    To study the mechanism of lighting strokes and the production of lighting surges.

·    To study the propagation, reflection and refraction of travelling waves.

·    To study the impact of voltage transients caused by faults, circuit breaker action, load rejection on integrated power system.

UNIT I INTRODUCTION AND SURVEY                                                                           9

Review and importance of the study of transients - causes for transients. RL circuit transient with sine wave excitation - double frequency transients - basic transforms of the RLC circuit transients. Different types of power system transients - effect of transients on power systems – role of the study of transients in system planning.

UNIT II    SWITCHING TRANSIENTS                                                                              9

Over  voltages due  to  switching  transients  -  resistance  switching  and the  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 - effect of source

 regulation - capacitance switching with a restrike, with multiple restrikes. Illustration for multiple restriking transients - ferro resonance.

UNIT III           LIGHTNING TRANSIENTS                                                                          9

Review of the theories in the formation of clouds and charge formation - rate of charging of thunder clouds –  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.

UNIT IV           TRAVELING WAVES ON TRANSMISSION LINE COMPUTATION OF

TRANSIENTS                                                                                                                 9

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.

UNIT V            TRANSIENTS IN INTEGRATED POWER SYSTEM                                   9

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 - over voltage induced by faults -switching surges on integrated system Qualitative application of EMTP for transient computation.

TOTAL : 45 PERIODS

OUTCOMES:

·   Ability to understand and analyze power system operation, stability, control and protection.

TEXT BOOKS:

1. Allan Greenwood, ‘Electrical Transients in Power Systems’, Wiley Inter Science, New York, 2nd

Edition, 1991.

2. Pritindra Chowdhari, “Electromagnetic transients in Power System”, John Wiley and Sons Inc., Second Edition, 2009.

3. C.S. Indulkar, D.P.Kothari, K. Ramalingam, ‘Power System Transients – A statistical approach’,

PHI Learning Private Limited, Second Edition, 2010.

REFERENCES:

1. M.S.Naidu and V.Kamaraju, ‘High Voltage Engineering’, Tata McGraw Hill, Fifth Edition, 2013.

2. R.D. Begamudre, ‘Extra High Voltage AC Transmission Engineering’, Wiley Eastern Limited,

1986.

3. Y.Hase, Handbook of Power System Engineering,” Wiley India, 2012.

4. J.L.Kirtley, “Electric Power Principles, Sources, Conversion, Distribution and use,” Wiley, 2012

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