High Voltage Engineering JNTU Syllabus
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY
IV Year B.Tech EEE I-Sem T P C
4+1* 0 4
HIGH VOLTAGE ENGINEERING
This subject deals with the detailed analysis of Breakdown occur in gaseous, liquids and solid dielectrics.
Information about generation and measurement of High voltage and current. In addition the High voltage
testing methods are also discussed.
UNIT I INTRODUCTION TO HIGH VOLTAGE TECHNOLOGY AND APPLICATIONS
Electric Field Stresses, Gas / Vaccum as Insulator, Liquid Dielectrics, Solids and Composites, Estimation
and Control of Electric Stress, Numerical methods for electric field computation, Surge voltages, their
distribution and control, Applications of insulating materials in transformers, rotating machines, circuit
breakers, cable power capacitors and bushings.
UNIT II BREAK DOWN IN GASEOUS AND LIQUID DIELECTRICS
Gases as insulating media, collision process, Ionization process, Townsend’s criteria of breakdown in
gases, Paschen’s law. Liquid as Insulator, pure and commercial liquids, breakdown in pure and
UNIT III BREAK DOWN IN SOLID DIELECTRICS
Intrinsic breakdown, electromechanical breakdown, thermal breakdown, breakdown of solid dielectrics in
practice, Breakdown in composite dielectrics, solid dielectrics used in practice.
UNIT IV GENERATION OF HIGH VOLTAGES AND CURRENTS
Generation of High Direct Current Voltages, Generation of High alternating voltages, Generation of
Impulse Voltages, Generation of Impulse currents, Tripping and control of impulse generators.
UNIT V MEASUREMENT OF HIGH VOLTAGES AND CURRENTS
Measurement of High Direct Current voltages, Measurement of High Voltages alternating and impulse,
Measurement of High Currents-direct, alternating and Impulse, Oscilloscope for impulse voltage and
UNIT VI OVER VOLTAGE PHENOMENON AND INSULATION CO-ORDINATION
Natural causes for over voltages – Lightning phenomenon, Overvoltage due to switching surges, system
faults and other abnormal conditions, Principles of Insulation Coordination on High voltage and Extra High
Voltage power systems.
UNIT VII NON-DISTRUCTIVE TESTING OF MATERIAL AND ELECTRICAL APPARATUS
Measurement of D.C Resistivity, Measurement of Dielectric Constant and loss factor, Partial discharge
UNIT VIII HIGH VOLTAGE TESTING OF ELECTRICAL APPARATUS
Testing of Insulators and bushings, Testing of Isolators and circuit breakers, Testing of cables, Testing of
Transformers, Testing of Surge Arresters, Radio Interference measurements.
1. High Voltage Engineering by M.S.Naidu and V. Kamaraju – TMH Publications, 3rd Edition
2. High Voltage Engineering: Fundamentals by E.Kuffel, W.S.Zaengl, J.Kuffel by Elsevier, 2nd
1. High Voltage Engineering by C.L.Wadhwa, New Age Internationals (P) Limited, 1997.
2. High Voltage Insulation Engineering by Ravindra Arora, Wolfgang Mosch, New Age International
(P) Limited, 1995.