UNIT- I:
E.H.V.A.C. Transmission line trends and preliminary aspect standard transmission voltages –
Estimation at line and ground parameters-Bundle conductor systems-Inductance and
Capacitance of E.H.V. lines – positive, negative and zero sequence impedance – Line
Parameters for Modes of Propagation.
UNIT- II:
Electrostatic field and voltage gradients – calculations of electrostatic field of AC lines – effect of
high electrostatic field on biological organisms and human beings - surface voltage gradients and
maximum gradients of actual transmission lines – voltage gradients on sub conductor.
UNIT- III:
Electrostatic induction in unenergized lines – measurement of field and voltage gradients for three
phase single and double circuit lines – un energized lines. Power Frequency Voltage control and
over-voltages in EHV lines: No load voltage – charging currents at power frequency-voltage
control – shunt and series compensation – static VAR compensation.
UNIT - IV:
Corona in E.H.V. lines – Corona loss formulae- attention of traveling waves due to Corona –
Audio noise due to Corona, its generation, characteristic and limits. Measurements of audio noise
radio interference due to Corona - properties of radio noise – frequency spectrum of RI fields –
Measurements of RI and RIV.
UNIT- V:
Design of EHV lines based on steady state and transient limits - EHV cables and their
characteristics.
TEXT BOOKS:
1. EHVAC Transmission Engineering by R. D. Begamudre, New Age International (p) Ltd.
2. HVAC and DC Transmission by S. Rao.
REFERENCE BOOKS :
1. Rokosh Das Begamudre,”Extra High Voltage AC Transmission Engineering”– Wiley
Eastern LTD., NEW DELHI – 1987.
2. Edison,”EHV Transmission line”- Electric Institution (GEC 1968).
E.H.V.A.C. Transmission line trends and preliminary aspect standard transmission voltages –
Estimation at line and ground parameters-Bundle conductor systems-Inductance and
Capacitance of E.H.V. lines – positive, negative and zero sequence impedance – Line
Parameters for Modes of Propagation.
UNIT- II:
Electrostatic field and voltage gradients – calculations of electrostatic field of AC lines – effect of
high electrostatic field on biological organisms and human beings - surface voltage gradients and
maximum gradients of actual transmission lines – voltage gradients on sub conductor.
UNIT- III:
Electrostatic induction in unenergized lines – measurement of field and voltage gradients for three
phase single and double circuit lines – un energized lines. Power Frequency Voltage control and
over-voltages in EHV lines: No load voltage – charging currents at power frequency-voltage
control – shunt and series compensation – static VAR compensation.
UNIT - IV:
Corona in E.H.V. lines – Corona loss formulae- attention of traveling waves due to Corona –
Audio noise due to Corona, its generation, characteristic and limits. Measurements of audio noise
radio interference due to Corona - properties of radio noise – frequency spectrum of RI fields –
Measurements of RI and RIV.
UNIT- V:
Design of EHV lines based on steady state and transient limits - EHV cables and their
characteristics.
TEXT BOOKS:
1. EHVAC Transmission Engineering by R. D. Begamudre, New Age International (p) Ltd.
2. HVAC and DC Transmission by S. Rao.
REFERENCE BOOKS :
1. Rokosh Das Begamudre,”Extra High Voltage AC Transmission Engineering”– Wiley
Eastern LTD., NEW DELHI – 1987.
2. Edison,”EHV Transmission line”- Electric Institution (GEC 1968).
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