CSVTU BE VII Semester Electrical Engineering High Voltage Engineering Syllabus

CSVTU BE VII Semester EE High Voltage Engineering Syllabus

Chhattisgarh Swami Vivekanand Technical University, Bhilai

Semester: 7th Branch: Electrical Engg.

Subject: High Voltage Engineering

UNIT I: Breakdown in Gases

Gases as insulating media, Ionization processes, Electron avalanche, Townsend’s criterion for breakdown,

streamer theory of breakdown, Gaseous discharge in uniform field, Paschen’s law, Breakdown in non-uniform

field, corona discharges, effect of polarity on corona & breakdown voltage. Corona in transmission lines,

Empirical formulae for corona loss, Methods of reducing corona loss.

UNIT II: Dielectrics

Liquid Dielectrics: conduction & breakdown in pure liquids, Conduction & breakdown in commercial liquids, Methods for determination of breakdown strength. Factors affecting dielectric strength of liquids.

Solid Dielectrics: – Breakdown mechanism, Intrinsic breakdown, Electromechanical breakdown, thermal breakdown, breakdown of solid dielectric in practice, Breakdown due to treeing & tracking, breakdown due to the internal discharges.

 UNIT III: Generation of high voltages

Generation of high D.C. voltages, half wave & full wave rectifier circuits, Van De Graff generators, Electro-static

Generators, Generation of high alternating voltages, cascade transformers, Generation of impulse voltages,

Multistage Impulse generator, Marx circuit, Tripping & control of Impulse generators

UNIT IV: Measurement of high Voltages

Measurement of high D.C.voltage, Measurement of high A.C.& impulse voltages, series Impedance voltmeter,

series capacitance voltmeter capacitance potential dividers & capacitance voltage transformers, Resistance

potential dividers, Electrostatic voltmeter, Spark gap for measurement of high D.C., A.C. & impulse voltages,

Potential divider for impulse voltage measurements, CRO for impulse voltage measurements.

UNIT V:

High Voltage Testing of Electrical Apparatus: Test on insulators, Dry & wet flash Over tests & withstand tests, Impulse flash over & withstand voltage test, High voltage tests on cables Impulse testing of transformers.

Non-Destructive Testing: Measurement of dielectric constant & loss factor, High voltage Schering Bridge, Partial Discharge Measurements.

Text Books:

1. High Voltage Engineering by M.S. Naidu & V.Kamraju, TMH Pbs.

2. An introduction to high voltage enginnering, Subir Ray, PHI.Reference Books:

1. High voltage Insulation Engineering by Ravindra Arora, New Age International.

2. High Voltage Engineering By Dr.R.S.Jha, Dhanpat Rai & Sons.

3. Extra High Voltage A.C. Transmission Engineering by R.D. Begamudre Wile

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