High voltage insulation engineering: behaviour of dielectrics, their properties and applications
The Book Covers In Detail The Behaviour Of Gaseous, Liquid And Solid Dielectrics, Including Vacuum, In Electric Fields Present In High Voltage Power Systems. Insulating Materials Are Classified According To Their Sources, Production And Applications Before Describing Their Dielectric Properties. Their Performance Under Dc, Ac And Impulse Voltages Is Described For All The Three Configurations Of Fields Defined As Uniform, Weakly Nonuniform Andextremelynonuniform.Analytical And Computational Methods Of Electric Stress Estimation In The Dielectrics As Well As Stress Control And Optimization Techniques Are Alsocovered. While Describing The Breakdown Strengths, A Distinction Is Made Between Intrinsic And Practical Strengths Of The Dielectrics. Factors Which Influence The Breakdown Have Been Emphasized. Efforts Have Been Made In Selecting Actual Measured Characteristics From The Vast Number Of Literature Referred. A Reader Would Find It Of Practical Importance.Contents Of The Book Have Been Evolved From The Graduate Level Courses Developed For The Curricula At Technische Universitat Dresden, Germany And Indian Institute Of Technology Kanpur, India. These Should Also Be Useful And Of Sufficient Interest To Engineers From Utilities And Industries Dealing With High Voltage Insulation, Besides Those Involved In Research.
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anode applied voltage breakdown mechanism breakdown strength breakdown voltage breakdown voltage characteristics capacitance cathode charge carriers coaxial coefficient conductor constant corona corona discharge curve density depends described discharge process effect electric field intensity electric strength electric stress electrical breakdown electrode configuration electrode surfaces electrode system electron avalanche energy Equation estimation experimental extremely nonuniform fields gap distance gap lengths gas insulated gas pressure gases given high voltage higher impulse voltage increasing insulating materials insulation system interface ionization known kV/cm Laplace equation large number leader discharge liquid dielectrics loss tangent magnitude maximum measured method molecules negative polarity optimization partial discharge particle Paschen's law PD inception polymer positive polarity positive streamer potential gradient prebreakdown produced propagation properties region relative permittivity required for breakdown rod-plane shown in Fig solid dielectrics space charge spark breakdown stable streamer discharge temperature thermal uniform field upto vacuum velocity weakly nonuniform fields