Course Objectives:

1.      To impart the knowledge about the different causes of high voltage occurrence and the protective devices used. To test and diagnose HV cables.

2.      To study insulation performance of Air and SF6 and performance of GIS.

3.      To discuss the procedure to perform HV test on electrical apparatus.


Introduction: Power Systems Development and High Voltage Engineering; Contents of High Voltage Engineering; Applications of High Voltage Technology.


Traveling Waves: Transient and traveling waves, Effects of Line Terminations, Junction of several lines, Bewley Lattice Diagram, Traveling wave in transformer and generator.


Lightning in Power Systems: Lightning formation, Lightning overvoltages (strike and back flashover), Lightning overvoltages protection devices, Protection system of high buildings.


Switching Overvoltages Types of internal overvoltages, switching overvoltages, Causes of various internal overvoltages, Control of switching overvoltages, EMTP and its applications.


Arresters and Insulation Coordination: Surge arresters (MOA) and its performances, Voltage-Time Characteristics and coordination, Surge arresters selection and location in power systems, Principles of insulation coordination, Statistical and conventional insulation coordination.


High Voltage Cables: Configuration and design features of high voltage cables, Testing of high voltage cables, Diagnostics of high voltage cables.


Air And Sf6 Breakdown: Fundamental aspects of air and SF6 breakdown, U-curve and gap factor, Spark-over characteristics, SF6 gas insulation performance.


Gas Insulated Substation: Gas Insulated Substation (GIS) and its importance, Configuration and design features of GIS, Prospects of GIS.


High Voltage Test of Electrical Apparatus: Nondestructive insulation testing, Destructive insulation testing: AC, DC, and Impulse testing of apparatus, New high voltage measurement technology; Safety in high voltage laboratory.


Laboratory Work:Non- destructive testing, Corona discharge realization, Construction of HVAC and HVDC waves, Thermal tests on Insulation, Impulse wave generation and measurement.


Course Learning Outcomes (CLO):

On the completion of the course, the student will be able:

1.      To understand the causes of occurrence high voltage and travelling waves.

2.      To knowing the different devices used for protection against high voltage Testing HV cables.

3.      To learn about characteristics of Air and SF6 and performance of GIS.

Recommended Books:

1.      Khalifa M., High-Voltage Engineering, Theory and Practice, Marcel Dekker Inc (2000).

2.      Ryan H.M., High voltage engineering and testing, IEEE Press (1994).

3.      Kind, D. and Feser, K, High Voltage Test Techniques, Reed Educational and Professional Publishing Limited (2001).