CSVTU BE VI Sem EE Power System Protection & Switchgear Syllabus

CSVTU BE VI Sem EE Power System Protection & Switchgear Syllabus

Chhattisgarh Swami Vivekanand Technical University, Bhilai

Semester: 6th Branch: Electrical Engg.

Subject: Power System Protection & Switchgear

Total Theory Periods: 40 Total Tut Periods: 12

Total Marks in End Semester Exam: 80

Minimum number of Class tests to be conducted: 2

UNIT-I

REALY : Terminology, Basic circuit, realy connection with trip circuit and circuit breaker, objectives of

protection, types of relay, construction and operation of instantaneous over current realy. I.DM.T. Relay,

directional Unit, differential relay, percentage differential relay, Buchholz relay, Generalized torque

expression, logical construction of impedance reactance, MHO and Off-set MHO Relays using

generalized torque expression.

UNIT-II

Protection of Alternators

: Differential protection, Protection of stator against phases to ground fault,

phase to phase faults, inter turn fault, protection against unbalanced loading, protection of rotor against

ground fault, field failure, reverse power, back up protection, field suppression, protection of bus bars,

frame leakage protection, differential protection.

UNIT III

Protection of transformers & Feeders

: differential protection of transformers for different winding

configurations, difficulties encountered in differential protection and their remedies, protection of feeders,

protection of ring main and parallel feeders, protection of radial feeders by over current relays, distance

relays and carrier current protection scheme.

UNIT IV

Static Relays

: directional relay, impedance relay, admittance relay and admittance relay, amplitude

comparator, phase comparator, duality between amplitude and phase comparators.

UNIT V

Circuit Breakers and Fuses

: Arc formation, arc interruption and restriking voltage, current chopping,

resistance switch, Air blast circuit breakers, minimum and bulk oil circuit breakers, SF6 and Vacuum

Circuit breakers, circuit breakers rating, testing of CB, definitions of terms in fuses, HRC fuses.

Text Books:

1. “Power system protection and switchgear”, Ravindranath and Chander, TMH

2. “Power system protection”, Badri Ram, TMH.

3. “Fundamentals of power system protection”, Paithankar and Bhinde, PHI

Reference books:

1. “Electrical power system”, Wadhw

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