JNTUK B.Tech Switchgear and Protection R13 Syllabus for Engineering it gives you detail information about Switchgear and Protection syllabus.
Preamble
In order to supply power from generating end to receiving end several equipments are connected in to the system. In order to protect the equipments and components against various operating conditions and over voltages protective devices are required to be installed in the system. Topics specified in this subject deal with various types of protective equipments and their working principle including limitations etc.
Learning objectives
- To provide the basic principles of arc interruption, circuit breaking principles, operation of various types of circuit breakers.
- To study the classification, operation, construction and application of different types of electromagnetic protective relays.
- To explain various types of faults in generators and transformers and different types of protective schemes.
- To impart knowledge of various protective schemes used for feeders and bus bars.
- To explain the principles and operations of different types of static relays.
- To study different types of over voltages in a power system and principles of different protective schemes for insulation co–ordination.
UNIT–I
Circuit Breakers : Miniature Circuit Breaker(MCB)– Elementary principles of arc interruption– Restrike Voltage and Recovery voltages– Restrike phenomenon– Average and Max. RRRV– Current chopping and Resistance switching– Introduction to oil circuit breakers– Description and operation of Air Blast– Vacuum and SF6 circuit breakers– CB ratings and specifications– Auto reclosing.
UNIT–II
Electromagnetic Protection : Principle of operation and construction of attracted armature– Balanced beam– induction disc and induction cup relays– Relays classification– Instantaneous– DMT and IDMT types– Applications of relays: Over current/under voltage relays– Directional relays– Differential relays and percentage differential relays– Universal torque equation– Distance relays: Impedance– Reactance– Mho and offset mho relays– Characteristics of
distance relays and comparison.
UNIT–III
Generator Protection : Protection of generators against stator faults– Rotor faults and abnormal conditions– restricted earth fault and inter turn fault protection– Numerical examples. Transformer Protection : Protection of transformers: Percentage differential protection– Design of CT’s ratio– Buchholz relay protection–Numerical examples.
UNIT–IV
Feeder and Bus bar Protection : Protection of lines: Over current– Carrier current and three zone distance relay using impedance relays–Translay relay Protection of bus bars– Differential protection.
UNIT–V
Static and Digital Relays : Static relays: Static relay components– Static over current relay– Static distance relay– Micro processor based digital relays.
UNIT–VI
Protection against over voltage and grounding : Generation of over voltages in power systems– Protection against lightning over voltages– Valve type and zinc–Oxide lighting arresters– Insulation coordination– BIL– impulse ratio– Standard impulse test wave– volt~time characteristics– Grounded and ungrounded neutral systems–Effects of ungrounded neutral on system performance– Methods of neutral grounding: Solid–resistance–Reactance–Arcing grounds and grounding Practices.
Learning Outcomes
- To be able to understand the principles of arc interruption for application to high voltage circuit breakers of air, oil, vacuum, SF6 gas type.
- Ability to understand the working principle and constructional features of different types of electromagnetic protective relays.
- Students acquire in depth knowledge of faults that is observed to occur in high power generator and transformers and protective schemes used for all protections.
- Improves the ability to understand various types of protective schemes used for feeders and bus bar protection.
- To be able to understand the different types of over voltages appearing in the system, including existing protective schemes required for insulation co–ordination.
Text Books
- Protection and SwitchGear by BhaveshBhalja, R.P. Maheshwari, NileshG. Chothani, Oxford University Press, 2013
- Power system protection- Static Relays with microprocessor applications. by T.S. Madhava Rao, TMH
- Electrical Power System Protection by C. CHRISTOPOULOS and A. Wright, Springer publications.
- Reference Books
- Power System Protection and Switchgear by Badari Ram, D.N Viswakarma, TMH Publications.
- Fundamentals of Power System Protection by Paithankar and S.R.Bhide, PHI, 2003.
- Art & Science of Protective Relaying – by C R Mason, Wiley Eastern Ltd.
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