Scilab Textbook Companion for Switchgear Protection And Power Systems by S. Rao1 Created by Mayank Gupta BE Electrical Engineering Thapar University College Teacher Dr. Sunil Kumar Singla Cross-Checked by Lavitha Pereira July 13, 2017 1 Funded by a grant from the National Mission on Education through ICT, This Textbook Companion and Scilab codes written in it can be downloaded from the ”Textbook Companion Project” section at the website Book Description Title: Switchgear Protection And Power Systems Author: S. Rao Publisher: Khanna Publisher, New Delhi Edition: 13 Year: 2012 ISBN: 1 Scilab numbering policy used in this document and the relation to the above book. Exa Example (Solved example) Eqn Equation (Particular equation of the above book) AP Appendix to Example(Scilab Code that is an Appednix to a particular Example of the above book) For example, Exa 3.51 means solved example 3.51 of this book. Sec 2.3 means a scilab code whose theory is explained in Section 2.3 of the book. Kenwood amplifier a 5j manual instructions.

13 8 SWITCHGEAR AND PROTECTION Course Code: 13EE1119 L 4 T 0 P 0 C 3 Pre requisites: Electrical Machines and Power Transmission Engineering Course Educational Objectives: ✤ To discuss the need for the protection and various protection schemes. ✤ To study different relays characteristics character istics ✤ To understand the method of circuit breaking, arcing phenomena – various arc theories theories - capacitive and inductive inductive breaking Course Outcomes: ✤ Students acquire knowledge in the field of power system protection, circuit breakers and relays. ✤ Students will gain ability to design the relevant protection systems for the main elements of a power system. UNIT-I ( 12 L ec tu re s) CIRCUIT BREAKERS: Principle of operation – RRRV – Current chopping- Circuit Breaker ratings and specifications, specifica tions, Testing Testing of Circuit Breakers.

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Constructi onal features and selection Constructional select ion of LT LT breakers (Miniature circuit circui t breakers/Metal clad circuit breakers/Earth leakage circuit breaker) and HT breakers (Air blast circuit breaker-Oil circuit breakers-SF6 CBVacuum Circuit Circuit Breakers) Breakers) UNIT-II ( 12 L ec t u re s ) PROTECTIVE RELA RELAYS-I: YS-I: Electromagnetic Relays: Principle of Operation and Construction of Attracted armature, Balanced Balanc ed Beam, induction Disc and Induction Cup relays. Relays Classification: Instantaneous, DMT and IDMT types, G V P College of Engineering (Autonomous) 2013 13 9 Application of relays: Over current, Under voltage, Directional, Differential and Percentage Differential. Game basara 2 heroes pc full rip. UNIT-III (12 Lectures) PROTECTIVE RELAYS-II: Universal Torque Equation, Distance relays: Impedance, Reactance and Mho and Off-Set Mho relays, Characteristics of Distance Relays and Comparison. Static Relays, Static Relays verses Electromagnetic Relays. Microprocessor Based Relays: impedance, directional, reactance, Mho & offset Mho and mathematical expression for distance relay.