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High Voltage Engineering ( Class notes )

Chhattisgarh Swami Vivekanand Technical University, Bhilai (C.G.)
Semester: B.E. VIII Sem. Branch: Electrical & Electronics Engg.
Subject: High Voltage Engineering. Code: 325811(25)

Total Theory Periods: 40 Total Tutorial Periods: Nil
Total Marks in End Sem Exam: 80
Min no. of class Test to be conducted: Two

Unit 1- Insulation In Electrical Power System

General Characteristics of Gaseous Insulation, Basic process of ionization in a gas, Breakdown Voltage, Paschen’s Law, BDV in gases-gap between two spheres, rod plane & rod gaps, Surface discharge of solid dielectric, Corona discharge on transmission line conductor, Corona loss, methods of reducing corona , Breakdown in liquid dielectric, transformer oil testing, Breakdown in solid dielectric.

Unit 2-Line & Substation Insulation

Electrical & mechanical characteristics of insulators, materials for insulators, Types of insulators(Pin, Post, Suspension), Insulation of OH transmission line, Insulation of transformer, Generator,Cables, rotating machines, Properties of Insulation, Puncture Voltage.

Unit 3-Transient Phenomena In Power System

Sources of Over voltage single phase ground in unearthed system, Lightning discharge, Protection of equipment from lightning stroke, lightning arrestors, protection of rotating machines and substations.

Unit 4 - Generation of AC & DC High Voltages

Half Wave rectifier circuit, Voltage multiplier circuit, Van-de Graff generator, generation of impulse voltage & current, measurement of high voltage & current, impulse voltage measurement.

Unit 5- Preventive testing of Insulation

Objective & methods, measurement of tan? , capacitance, PD in insulation, Testing of bushing , Insulators, transformer, cables, rotating machine.

Text Books:

1) C.L. Wadhwa - High Voltage Engg.( 2nd Ed New Age International Ltd. )
2) M.S. Naidu & V. Kamraju - High Voltage Engg.(3rd EdTata McGraw Hill )Title

Refernce Books :
D.V. Razevig High Voltage Engg.(Translated from Russian by M.P. Chourasia) Khanna Publishers

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