EE8010 - POWER SYSTEMS TRANSIENTS (Syllabus) 2017-regulation Anna University

EE8010 - POWER SYSTEMS TRANSIENTS (Syllabus) 2017-regulation Anna University

EE8010 

POWER SYSTEMS TRANSIENTS

 LTPC

3003

OBJECTIVES: To impart knowledge about the following topics:
• Generation of switching transients and their control using circuit – theoretical concept.
• Mechanism of lighting strokes and the production of lighting surges.
• Propagation, reflection and refraction of travelling waves.
• 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 switching and lightning transients.
• Ability to acquire knowledge on generation of switching transients and their control.
• Ability to analyze the mechanism of lighting strokes.
• Ability to understand the importance of propagation, reflection and refraction of travelling waves.
• Ability to find the voltage transients caused by faults.
• Ability to understand the concept of circuit breaker action, load rejection on integrated power system.

TEXT BOOKS:
1. Allan Greenwood, ‘Electrical Transients in Power Systems’, Wiley Inter Science, New York, 2ndEdition, 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’, 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.
5. Akihiro ametani,” Power System Transient theory and applications”, CRC press, 2013.

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