06EE831 - Modern Power System Protection Regulation (2006 - 2007) |
PART – A |
UNIT – I STATIC RELAYS |
Introduction, Basic construction, Classification, Basic
Circuits, Smoothing Circuits, Voltage regulation, square wave Generator,
Time delay Circuits, Level Detectors, Summation device, Sampling Circuits,
Zero crossing detector, output devices
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UNIT – II and III COMPARATORS |
Replica impedance, Mixing Transformers, General
equation of phase and Amplitude, Comparators, Realization of ohm, mho,
Impedance and offset impedance characteristics, Duality principle, Static
amplifier comparator – Rectifier bridge circulations current type, sampling
comparator, static phase comparator coincidence circuits type Rectifier phase
comparator, Block split comparator, Zener diode phase comparator. |
UNIT – IV PRINCIPLES OF DIGITAL/ NUMERICAL RELAYS |
Definition of
Numerical Protection System, Advantages of Numerical relays, Block
diagram of Numerical Relays, Processing Unit, non machines Interface,
communication in protective relays, Information handling with sub station
monitoring system. |
PART – B |
UNIT – V STATIC OVER CURRENT, TIMER AND VOLTAGE RELAYS |
Instantanense over current Relay, Definite time lag relay, inverse time over
current relay, static timer relay, Basic relay circuits, monostable delay circuits
Single phase Instantaneous over voltage and under voltage relays,
instantaneous over voltage relay using Op-amp. |
UNIT – VI and VII DISTANCE RELAY |
general Principle of operation, Zone discrimination,
Fault area on impedance diagram, Basic measuring elements, Different characteristics used in distance relaying- Impedance, Reactance, Admittance.
Ohm, Distance relay settings, Distance measurement Problems.
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UNIT – VIII DIGITAL RELAYS |
Block Schematic approach of microprocessor based
relays, over current relay Protection, Transformer differential protection,
Directional relay scheme, Impedance relay scheme.
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REFERENCE |
TEXT BOOKS: |
1. “Power System Protection, Static Relays with Microprocessor
applications”- T.S. Madava Rao, TMH, Second editon, 2004.
2. “Protective Relays and Protection” -Van Warrington A. R. and
Van C, Vol, I & II Chapman and Hall, 1968.
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Reference Books |
1. “Power System Protection”-Patra. S.P. Basu. S.K. Choudhari.S.
Oxford, and IBH Publications Co-1983.
2. “Power System Protection and switchgear”-Ravindranath. B and
Chanda M. New age International.
3. “Power system protectonand switchgear”-B.Ram and D.N
Vishwa karma- TMH, 1997.
4. “Fundamentals of Power System Protection”- Y.G. pasthankar.
S.R. Bhide PHI, 2007.
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