HIGH VOLTAGE ENGINEERING (18EE56)

 

HIGH VOLTAGE ENGINEERING

Course Code 18EE56 CIE Marks 40
Number of Lecture Hours/Week (L:T:P) 3:0:0 SEE Marks 60
Credits 03 Exam Hours 03
Credits - 03

Course Learning Objectives:

· To discuss conduction and breakdown in gases, liquid
dielectrics.
· To discuss breakdown in solid dielectrics.
· To discuss generation of high voltages and currents and their measurement.
· To discuss overvoltage phenomenon and insulation coordination in electric power systems.

Module-1

Conduction and Breakdown in Gases: Gases as InsulatingMedia, Collision Process, Ionization
Processes, Townsend's Current Growth Equation, Current Growth in the Presence of Secondary
Processes, Townsend's Criterion for Breakdown, Experimental Determination of Coefficients α and γ,
Breakdown in Electronegative Gases, Time Lags for Breakdown, Streamer Theory of Breakdown
in Gases, Paschen's Law, Breakdown in Non-Uniform Fields and Corona Discharges. Conduction and
Breakdown in Liquid Dielectrics: Liquids as Insulators, Pure Liquids and Commercial Liquids,
Conduction and Breakdown in Pure Liquids, Conduction and Breakdown in Commercial Liquids.
Breakdown in Solid Dielectrics: Introduction, Intrinsic Breakdown, Electromechanical Breakdown,
Thermal Breakdown.

Module-2

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.

 

Module-3

Measurement of High Voltages and Currents: Measurement of High Direct Current Voltages,
Measurement of High AC and Impulse Voltages, Measurement of High Currents – Direct,
Alternating and Impulse, Cathode Ray Oscillographs for Impulse Voltage and Current
Measurements.

 

Module-4

Overvoltage Phenomenon and Insulation Coordination in Electric Power Systems: National
Causes for Overvoltages - Lightning Phenomenon, Overvoltage due to Switching Surges, System Faults
and Other Abnormal, Principles of Insulation Coordination on High Voltage and Extra High Voltage Power Systems.

 

Module-5

Non-Destructive Testing ofMaterials and Electrical Apparatus: Introduction, Measurement of
Dielectric Constant and Loss Factor, Partial Discharge Measurements.
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
Arrestors, Radio Interference Measurements, Testing of HVDC Valves and Equipment.

 

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Course Outcomes: At the end of the course the student will be able to:

· Explain conduction and breakdown phenomenon in gases, liquid dielectrics and breakdown
phenomenon in solid dielectrics.
· Summarize generation of high voltages and currents
· Outline measurement techniques for high voltages and currents.
· Summarize overvoltage phenomenon and insulation coordination in electric power systems.
· Explain non-destructive testing of materials and electric apparatus, high-voltage testing of
electric apparatus

Question paper pattern:

· The question paper will have ten questions.
· Each full question is for 20 marks.
· There will be 2 full questions (with a maximum of three sub questions in one full question)
from each module.
· Each full question with sub questions will cover the contents under a module.
· Students will have to answer 5 full questions, selecting one full question from each module.

Text Book

1 High Voltage Engineering M.S. Naidu, V.Kamaraju McGraw Hill 5th Edition, 2013.

Reference Books

1 High Voltage Engineering
Fundamentals
E. Kuffel, W.S. Zaengl,
J. Kuffel
Newnes 2nd Edition, 2000

2 High Voltage Engineering Wadhwa C.L. New Age
International
3rd Edition, 2012

3 High-Voltage Test and
Measuring Techniques
Wolfgang Hauschild
Eberhard Lemke
Springer 1st Edition2014

4 High Voltage Engineering Farouk A.M. Rizk CRC Press 1st Edition2014

5 Fundamental of High Voltage
Engineering
Ravindra Arora, Bharat
Singh Rajpurohit
Wiley 2019