Advanced Power System Protection and Switchgear - [2710707]


Teaching Scheme

Tutorial Practical Total
3 0 2 5

Examination Scheme

Theory Examination Practical Examination Total
ESE (E) PA (M) ESE Viva (V) PA (I)
70 30 30 20 150

    ESE = End Semester Examination, PA = Progressive Assessment

Course Type   

Syllabus Content

Comparison of digital relays with previous generation relays, Basic Components of Digital Relays with block diagram, Signal Conditioning Subsystems, Surge Protection Circuits, Anti aliasing filter, Conversion Subsystem, The Sampling Theorem, Sample and Hold Circuit, Concept of analog to digital and digital to analog conversion, Idea of sliding window concept, introduction to intelligent electronic device (IED), Different relay algorithms such as algorithms for pure sinusoidal relaying signal, algorithm based on solution of system differential equations, Fourier analysis based half cycle and full cycle algorithm.
Protection of an interconnected system, Link net structure, Flowchart of Primary/Backup relay pairs, Flowchart of Time Multiplier Setting. Examples based on existing power system network
Definition of wide-area protection, Architectures of wide-area protection, concept of synchronized sampling, wide area phasor measurement technology, concept of Adaptive relaying, advantageous of adaptive relaying and its application
Introduction, history of auto-reclosing, advantageous of auto-reclosing, classification of auto-reclosing, auto-reclosing based on number of phases, auto-reclosing based on number of attempts, auto-reclosing based on speed, Sequence of events in single-shot auto-reclosing scheme, factors to be considered during reclosing such as choice of zone in case of distance relay, dead time, reclaim time, instantaneous trip lockout, intermediate lockout, breaker supervision function, Synchronism check, phasing voltage method, angular method, automatic synchronization
Introduction, Nature of system response to severe upsets such as system response to Islanding conditions, Under generated islands, Over generated islands, Reactive Power Balance, Power Plant Auxiliaries, Power System Restoration, Load Shedding, Factors to be considered for load shedding scheme such as maximum anticipated overload, number of load shedding steps, size of load shed at each step, frequency setting, time delay, rate of frequency decline, frequency relays, Issues with islanding and methods of islanding
Introduction, The Degree of compensation, basic components of series compensated transmission lines, Voltage Profile of Series Compensated Line, Faults with Unbypassed Series Capacitors, Protection problems such as Voltage Inversion, Current Inversion, Overreaching/Underreaching of distance element

Reference Books

SrTitleAuthorPublicationAmazon Link
1Protection and SwitchgearBhavesh Bhalja, R. P. MaheshwariWiley India Pvt Ltd   
2Power System ProtectionP. M. AndersonIEEE Press, New York   
3Digital Protection for Power SystemsA. T. Johns and S. K. SalmanPeter Peregrinus   
4Power System RelayingS. H. Horowitz and A. G. PhadkeJohn Wiley & Sons   
5Protective Relaying Theory and ApplicationsW. A. AlmoreMarcel Dekker Inc   
6Applied Protective RelayingJ. L. BlackburnWestinghouse Electric Corporation   
7Protective Relays: Their Theory and PracticeVan C. Warrington A. RChapman & Hall Ltd   
8Computer Relaying for Power SystemsA. G. Phadke and J. S. ThorpJohn Wiley & Sons   

Course Outcome

After learning the course the students should be able to
1. Analyze the tripping characteristics of various relays and its applications. Design inductors and transformers for power electronic converters
2. To operate various static relays, set their parameters and also to confirm its operations.
3. To operate various Numeric relays, set their parameters and also to confirm its operations.