Course Objective: This course presents EHV ac-dc transmission system components, protection and insulation level for over voltages
Syllabus:
EHV DC Transmission
-converter circuits-single phase and three phase circuits-analysis of bridge converter-with and without overlap-grid control-features of control-actual control characteristics-constant minimum -ignition angle control-constant current control-extinction angle control-stability of control-harmonics-characteristics of harmonics-means of reducing harmonics-telephone interference-filters-single frequency and double frequency-tuned filters-DC harmonic filters-DC line oscillations and line dampers-over voltage protection-DC lightning arresters-DC circuit breakers -basic concepts types & characteristics-Ground return-current field in the earth near an electrode -buried electrode-two layer earth-three layer earth
EHV AC Transmission
-components of transmission system-voltage gradients of conductor-single and bundled conductor-corona effects-electrostatic field of EHV lines-biological effects-live wire maintenance-insulation coordination-insulation for power frequency-voltage-switching over voltage-lightning performance-calculation of line & ground parameters
References:
- ‘Direct Current Transmission Volume - I’
– E W Kimbark
– John Wiley – New York
- ‘EHV AC Transmission Engineering’
– Rakosh Das Begamudre
– New Age International (p) Ltd., 2nd Edition, 1997
- ‘HVDC Power Transmission Systems’
– K R Padiyar
– Wiley Eastern Ltd.
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