HVDC transmission- introduction- comparison of ac and HVDC- HVDC transmission analysis of HVDC converters - pulse number- analysis with and without overlap- converter bridge characteristics- converter and HVDC system control- principles of DC link control- starting and stopping of DC link, power control- harmonics & filters– introduction- generation of harmonics- types of ac filters. power flow analysis in AC/DC systems - general modeling of dc links, solutions of AC-DC power flow- flexible ac transmission systems(FACTS)- concept of FACTS - flow of power in an ac system- dynamic stability consideration- basic types of FACTS controllers- static shunt compensators - SVC & STATCOM - objectives of shunt compensation- methods of controllable var generation- switching converter type var generators-basic operating principle and control approaches- static series compensators – GCSC, TSSC, TCSC & SSSC - objectives of series compensator, variable impedance type series compensators:- basic operating control schemes- power angle characteristics- control range and VA rating- external control- combined compensators.
Texts/References Books:
- K.R. Padiyar, ‘HVDC Power Transmission System’, New Age Intl. Co, 2002.
- N.G Hingorani, and L. Gyugyi ‘Understanding FACTS: Concepts and Technology of Flexible AC Transmission Systems’, IEEE Press Book, Standard Publishers and Distributors, Delhi, 2001.
- R. Streeram Kumar, ‘Lecture Notes on Flexible AC Transmission Systems (FACTS)’, Institution of Engineers (India), Calicut Local Centre, 2003.
- K.S. Sureshkumar, and S. Ashok, ‘FACTS Controllers & Applications’, E-book edition, Nalanda Digital Library, NIT Calicut, 2003.
- T. J. E Miller, ‘Reactive Power Control in Electric Systems’, John Wiley & Sons, 2010.
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