06EE844 - Hvdc Transmission Regulation (2006 - 2007) |
PART – A |
UNIT – I and II GENERAL ASPECTS OF DC TRANSMISSION AND COMPARISON
OF IT WITH AC TRANSMISSION |
Historical sketch, constitution of
EHV AC and DC links, Limitations and Advantages of AC and DC
Transmission.
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UNIT – III and IV CONVERTER CIRCUITS |
Valve Characteristics, Properties of converter
circuits, assumptions, single phase, three phase converters, choice of best
circuits for HV DC circuits. |
PART – B |
UNIT – V ANALYSIS OF THE BRIDGE CONVERTER |
IAnalysis with grid control
but no over lap, Analysis with grid control and with over lap less than 60
deg, Analysis with overlap greater than 60 deg, complete characteristics of
rectifier, Inversion |
UNIT – VI and VII CONTROL OF HVDC CONVERTERS AND SYSTEMS |
grid control,
basic means of control, power reversal, limitations of manual control,
constant current versus constant voltage, desired feature of control, actual
control characteristics, constant -minimum -Ignition –angle control, constant
–current control, constant –extinction –angle control, stability of control. |
UNIT – VIII PROTECTION |
General, DC reactor, voltage oscillations and valve
dampers, current oscillations and anode dampers, DC line oscillations and
line dampers, clear line faults and reenergizing the line.
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REFERENCE |
TEXT BOOKS: |
1. “Direct current Transmission”-EW Kimbark.
2. “Power system stability and control”- Prabha Kundur, TMH, 9th
reprint, 2007.
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