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High Voltage Engineering

By Ashwini Mathur, Shobhit Gupta

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Rs. 180

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Specifications of High Voltage Engineering

Book Details

  • 978-93-80311-98-2
  • English
  • 2019
  • Paper Back
  • -

Contents

  • Unit I. (i) Breakdown in Gases: Introduction to mechanism of breakdown in gases, Townsend’s breakdown mechanism. Breakdown in electromagnetic gases. Application of gases in power system.


    (ii) Breakdown in Liquids: Introduction to mechanism of breakdown in liquids, suspended solid particle mechanism and cavity breakdown. Application of oil in power apparatus.

    (iii) Breakdown in solids: Introduction to mechanism of breakdown in solids, electromechanical breakdown, treeing & tracking breakdown and thermal breakdown.

     


    Unit 2. (i) High DC Voltage Generation: Generation of high dc voltage, basic voltage multiplier circuit.
    (ii) High AC Voltage Generation: Cascaded Transformers.
    (iii) Impulse Voltage generation: Impulse voltage, basic impulse circuit, Mark’s multistage impulse generator.
    (iv) Measurement of High Voltage: Potential dividers - resistive, capacitive and mixed potential dividers. Sphere gap- Construction and operation, Klydonorgraph.

     


    Unit 3. Nondestructive Insulation Tests: (i) Measurement of resistivity, dielectric constant and loss factor. High Voltage Schering Bridge- measurement of capacitance and dielectric loss.
    (ii) Partial Discharges: Introduction to partial discharge, partial discharge equivalent circuit, Basic wide-band and narrow band PD detection circuits.

     

    Unit 4. (i) Over voltages: Causes of over voltages, introduction to lightning phenomena, over voltages due to lighting.
    (ii) Travelling Waves: Travelling waves on transmission lines-open end line, short circuited line, line terminated through a resistance, line connected to a cable, reflection and refraction at a T-junction and line terminated through a capacitance, Attenuation of tavelling waves.

     


    Unit 5. (i) Over Voltage Protection: Basic construction and operation of ground wires- protection angle and protective zone, ground rods, counterpoise, surge absorber, rod gap and arcing horn, lighting arresters - expulsion type, non - linear gap type and metal oxide gapless type.

    (ii) Insulation Coordination: Volt - time curves, basic impulse insulation
    levels, coordination of insulation levels.