JNTUH B.Tech 4th year (4-2) EHV AC Transmission gives you detail information of EHV AC Transmission (Elective – IV) R13 syllabus It will be help full to understand you complete curriculum of the year.
Objective
This course introduces the concepts of extra high voltage AC transmission. It also emphasis on the behavior of the line parameters for extra high voltages, voltage gradients of the transmission line conductors gradients, the effect of corona, electrostatic filed calculations, travelling wave theory concept, voltage control when the line carries extra high voltages.
UNIT — I
Introduction : Necessity of EHV AC transmission — advantages and problems—power handling capacity and line losses- mechanical considerations — resistance of conductors — properties of bundled conductors — bundle spacing and bundle radius- Examples. Line and ground reactive parameters: Line inductance and capacitances — sequence inductances and capacitances — modes of propagation — ground return — Examples
UNIT — II
Voltage Gradients of Conductors: Electrostatics — field of sphere gap — held of line changes and properties — charge — potential relations for multi- conductors — surface voltage gradient on conductors — distribution of voltage gradient on sub-conductors of bundle — Examples.
UNIT — III
Corona Effects: Power loss and audible noise (AN) — corona loss formulae — charge voltage diagram — generation, characteristics – limits and measurements of AN — relation between 1-phase and 3-phase AN levels — Examples. Radio interference (RI) – corona pulses generation, properties, limits — frequency spectrum — modes of propagation — excitation function — ‘measurement of RI, RIV and excitation functions — Examples.
TEXT BOOKS
- EHVAC Transmission Engineering by R. D. Begamudre, New Age International (p) Ltd.
- HVAC and DC Transmission by S. Rao.
- REFERENCE BOOKS
- Rokosh Das Begamudre,”Extra High Voltage AC Transmission Engineering”— Wiley Eastern LTD.
- Edison,”EHV Transmission line”- Electric Institution.
Outcome
After going through this course the student gets a thorough knowledge on,general aspects and necessity of extra high voltage (EHVAC) transmission, advantages and disadvantages of EHVAC, concepts of voltage gradient, effects of corona, electro static field calculations, theory of travelling waves and voltage control of EHVAC transmission, with which he/she can able to apply the above conceptual things to real-world electrical and electronics problems and applications.
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