EE2402 Protection and Switchgear - SUBJECT CATALOG

SUBJECT RESOURCES:

CLICK HERE to access 'Previous Year Question Papers'

CLICK HERE to access 'Question Bank'

CLICK HERE to access '2 Marks'

CLICK HERE to access 'Notes'

CLICK HERE to search more about this subject



SYLLABUS:

EE2402           PROTECTION AND SWITCHGEAR                                                          L T  P C

3 0 0  3

AIM:

To  introduce  the  students  to  the  various  abnormal  operating  conditions  in  power  system  and describe the apparatus and system protection schemes. Also to describe the phenomena of current interruption to study the various switchgears.

OBJECTIVES:

i.          To  discuss the causes of abnormal operating conditions (faults, lightning  and  switching surges) of the apparatus and system.

ii.          To understand the characteristics and functions of relays and protection     schemes.

iii.         To understand the problems associated with circuit interruption by a circuit breaker.

UNIT I INTRODUCTION       9

Importance of protective schemes for electrical apparatus and power system. Qualitative review of faults and fault currents - relay terminology – definitions - and essential qualities of protection. Protection against over voltages due to lightning and switching - arcing grounds - Peterson Coil - ground wires - surge absorber and diverters

Power System earthing – neutral Earthing - basic ideas of insulation coordination.

UNIT II            OPERATING PRINCIPLES AND RELAY CHARACTERISTICS  9

Electromagnetic relays – over current, directional and non-directional, distance, negative sequence, differential and under frequency relays – Introduction to static relays.

UNIT III           APPARATUS PROTECTION           9

Main  considerations  in  apparatus  protection  -  transformer,  generator  and  motor  protection  - protection of busbars. Transmission line protection - zones of protection. CTs and PTs and their applications in protection schemes.

UNIT IV           THEORY OF CIRCUIT INTERRUPTION    9

Physics of arc phenomena and arc interruption.

DC and AC circuit breaking - restriking voltage and recovery voltage - rate of rise of recovery voltage

- resistance switching - current chopping - interruption of capacitive current.

UNIT V            CIRCUIT BREAKERS           9

Types of circuit breakers – air blast, air break, oil, SF6  and vacuum circuit breakers – comparative merits of different circuit breakers – testing of circuit breakers.

TOTAL : 45 PERIODS

TEXT BOOKS:

1.  M.L.  Soni,  P.V.  Gupta,  V.S.  Bhatnagar,  A.  Chakrabarti,  ‘A  Text  Book  on  Power  System

Engineering’, Dhanpat Rai & Co., 1998. (For All Chapters 1, 2, 3, 4 and 5).

2.  R.K.Rajput, A Tex book of Power System Engineering. Laxmi Publications,  First

Edition Reprint 2007.

REFERENCES:

1.  Sunil S. Rao, ‘Switchgear and Protection’, Khanna publishers, New Delhi, 1986.

2.  C.L. Wadhwa, ‘Electrical Power Systems’, Newage International (P) Ltd., 2000.

3.  B. Ravindranath, and N. Chander, ‘Power System Protection & Switchgear’, Wiley Eastern Ltd.,

1977.

4.  Badri Ram, Vishwakarma, ‘Power System Protection and Switchgear’, Tata McGraw Hill, 2001.

5.  Y.G. Paithankar and S.R. Bhide, ‘Fundamentals of Power System Protection’, Prentice Hall of

India Pvt. Ltd., New Delhi–110001, 2003.