Module 1
Introduction: Comparison of AC, DC transmission – Description of DC transmission systems – modern trends in thyristor valves – Pulse number of converters – choice of converter configuration – Review of Graetz circuit – Valve rating – Transformer rating – Simplified analysis of Graetz circuit without overlap only.
Introduction: Comparison of AC, DC transmission – Description of DC transmission systems – modern trends in thyristor valves – Pulse number of converters – choice of converter configuration – Review of Graetz circuit – Valve rating – Transformer rating – Simplified analysis of Graetz circuit without overlap only.
Module 2
HVDC System Control: principles of DC link control – converter control characteristics – system control hierarchy – firing angle control – individual phase control and equidistant phase control – comparison – advantages and disadvantages – current and extinction angle control – starting and stopping of DC link – power control
HVDC System Control: principles of DC link control – converter control characteristics – system control hierarchy – firing angle control – individual phase control and equidistant phase control – comparison – advantages and disadvantages – current and extinction angle control – starting and stopping of DC link – power control
Module 3
Converter faults and protection: types of faults – commutation failure –arc through and misfire – protection against over currents – over voltages – surge arresters – protection against over voltages
Converter faults and protection: types of faults – commutation failure –arc through and misfire – protection against over currents – over voltages – surge arresters – protection against over voltages
Module 4
Harmonics and filters: Sources of harmonics in HVDC systems – Smoothing reactors – Corona and radio interference effects – harmonic distortion factor (derivation not required) – types of AC filters – DC filters (design not required)
Harmonics and filters: Sources of harmonics in HVDC systems – Smoothing reactors – Corona and radio interference effects – harmonic distortion factor (derivation not required) – types of AC filters – DC filters (design not required)
Module 5
Multi-terminal DC systems: applications of MTDC systems – types – comparison.
Reactive power control: sources of reactive power – static VAR systems – TCR configuration (analysis not required) – Typical control system (block diagram only) for a TCR – operation of Thyristor switched capacitor
Multi-terminal DC systems: applications of MTDC systems – types – comparison.
Reactive power control: sources of reactive power – static VAR systems – TCR configuration (analysis not required) – Typical control system (block diagram only) for a TCR – operation of Thyristor switched capacitor
Text Book
1. HVDC Power Transmission Systems-Technology and System Interactions: K.R Padiyar, New Age Int’l.
Reference
1. Direct Current Transmission Vol 1: E.W Kimbark, Wiley