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SYLLABUS

UNIT-I

INTRODUCTION TO HIGH VOLTAGE TECHNOLOGY Electric field stresses – Uniform and non-uniform field configuration of electrodes – Estimation and control of electric Stress – Numerical methods for electric field computation.

UNIT-II

BREAK DOWN PHENOMENON IN GASEOUS, LIQUID AND SOLID INSULATION 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 commercial liquid – Intrinsic breakdown – Electromechanical breakdown – Thermal breakdown – Breakdown of solid dielectrics, Composite dielectrics used in practice.

UNIT-III

GENERATION OF HIGH VOLTAGES AND HIGH CURRENTS Principal of D.C link control – Converters control characteristics – Firing angle control – Current and extinction angle control – Effect of source inductance on the system – Starting and stopping of D.C link – Power control.

UNIT-IV

MEASUREMENT OF HIGH VOLTAGES AND HIGH CURRENT Reactive power requirements in steady state – Conventional control strategies – Alternate control strategies sources of reactive power – A.C filters – Shunt capacitors – Synchronous condensers.

UNIT-V

NON-DESTRUCTIVE TESTING OF MATERIAL ELECTRICAL APPARATUS Measurement of D.C resistivity – Measurement of dielectric constant and loss factor – Partial discharge measurements.

UNIT-VI

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 measurement.