EE3701 High Voltage Engineering Notes
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EE3701 High Voltage Engineering Syllabus
UNIT I OVER VOLTAGES IN ELECTRICAL POWER SYSTEMS
Causes of over voltages and its effects on power system – Lightning, switching surges and temporary over voltages – Reflection and Refraction of Travelling waves- protection against over voltages_ Insulation Coordination.
UNIT II DIELECTRIC BREAKDOWN
Properties of Dielectric materials – Gaseous breakdown in uniform and non-uniform fields –Corona discharges – Vacuum breakdown – Conduction and breakdown in pure and commercial liquids, Maintenance of oil Quality – Breakdown mechanisms in solid and composite dielectrics- Applications of insulating materials in electrical equipment.
UNIT III GENERATION AND MEASUREMENTS OF HIGH VOLTAGES AND HIGH CURRENTS
Generation of High DC, AC, impulse voltages and currents – Analysis of DC/AC and Impulse generator circuits – Tripping and control of impulse generators, Measurement of High voltages and High currents – High Resistance with series ammeter – Dividers – Resistance, Capacitance and Mixed dividers – Peak Voltmeter, Generating Voltmeters, Electrostatic Voltmeters – Sphere Gaps, High current shunts Digital techniques in high voltage measurement.
UNIT IV HIGH VOLTAGE TESTING & INSULATION COORDINATION
High voltage testing of electrical power apparatus- International and Indian standards – Power frequency, impulse voltage and DC testing of Insulators, circuit breakers, bushing, isolators and transformers – Insulation Coordination.
UNIT V APPLICATION IN INDUSTRY
Introduction – electrostatic applications- electrostatic precipitation, separation, painting / coating, spraying, imaging, printing, Transport of materials – manufacturing of sand paper – Smoke particle detector – Electrostatic spinning, pumping, propulsion – Ozone generation – Biomedical applications.