# Power System Protection

 Course Code : PCEE4402 Author : uLektz University : Biju Patnaik University of Technology (BPUT) Regulation : 2010 Categories : Electrical & Electronics Format : ePUB3 (DRM Protected) Type : eBook

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Description :Power System Protection of PCEE4402 covers the latest syllabus prescribed by Biju Patnaik University of Technology (BPUT) for regulation 2010. Author: uLektz, Published by uLektz Learning Solutions Private Limited.

Note : No printed book. Only ebook. Access eBook using uLektz apps for Android, iOS and Windows Desktop PC.

##### Topics
###### UNIT-I INTRODUCTION AND BASIC PRINCIPLES, RELAY (PRINCIPLE, CONSTRUCTION AND CHARACTERISTICS)

1.1 Introduction and Basic Principles: Basic Idea of relay protection, Nature and causes of faults, Zones of protection, Primary and back-up protection, Basic principle of operation of protective system

1.2 Methods of discrimination, Derivation of single phase quantity from three phase quantity, Components of Protection

1.3 Relay (Principle, Construction and Characteristics): Relay classification,Principal Types of Electromagnetic relays, Theory of Induction relay torque, Relay design and construction

1.4 General Equations of Comparators and Electromagnetic Relays, Over Current relays, Directional relays, Distance relays, Differential relays

###### UNIT-II FAULT ANALYSIS USING SYMMETRICAL COMPONENTS, FEEDER PROTECTION, APPARATUS PROTECTION

2.1 Fault analysis using symmetrical components: Symmetrical & unsymmetrical faults

2.2 3-Phase systems, Significance of positive, negative and zero sequence components, Average 3-phase power in terms of symmetrical components, sequence impedance

2.3 Fault calculations, Single line to ground fault, Line to ground fault with Zf, Faults in Power systems, Concept of short circuit capacity of a Bus

2.4 Feeder Protection: Over current, Distance and Pilot Protection Schemes

2.5 Apparatus Protection: Transformer Protection, Generator Protection, Motor Protection, Bus zone protection schemes

###### UNIT-III STATIC RELAYS, NUMERICAL RELAYS, SWITCHGEARS

3.1 Static Relays: Comparators and different relays, Amplitude comparator, Phase Comparator, Coincidence type phase comparator

3.2 Basic elements of a static relay, Over-Current Relays, Differential Protection, Static distance Protection

3.3 Numerical relays: Block Diagram of Numerical Relay, Signal Sampling & Processing , Numerical Over-current protection

3.4 Numerical Transformer differential Protection, Numerical distance Protection of Transmission Line

3.5 Switchgears: Auto-reclosing fundamentals, Circuit breaker rating, Circuit constants and circuit conditions

3.6 Theory of Circuit interruption, Restriking voltage transients, characteristics of Restriking Voltage, Interaction between breaker and circuit, Current chopping, Automatic switch

3.7 Air-break circuit breakers, Oil circuit breakers, Air-blast circuit breakers, Vacuum circuit breakers, SF6circuit breakers, DC circuit breakings