Electrical and Electronics Engineering
High Voltage Engineering BooksHigh Voltage Naidu 25/07/2012
Shared by: Gauri Sankar(RCET, Bhilai)
High Voltage Engineering Sort Note 21/09/2012
Shared by: Saurabh Ghore(DIMET) High Voltage Engineering1. Unit-1 24/09/2012
Shared by: Saurabh Ghore(DIMET) 2. Unit-2 24/09/2012
Shared by: Saurabh Ghore(DIMET) 3. Unit-3 24/09/2012
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Shared by: Saurabh Ghore(DIMET) 5. Unit-5 24/09/2012
Shared by: Saurabh Ghore(DIMET) |
High Voltage Engineering SyllabusUNIT 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. |