8EE1 EHV AC/DC TRANSMISSION

Unit-1 EHV AC Transmission: Need of EHV transmission lines, power handling capacity and surge impedance loading. Problems of EHV transmission, bundled conductors: geometric mean radius of bundle, properties of bundle conductors. Electrostatic fields of EHV lines and their effects,
corona effects: Corona loss, audio and radio noise.
Unit-2 Load Frequency Control: Introduction to control of active and reactive power flow, turbine speed governing system. Speed governing characteristic of generating unit and load sharing between parallel operating generators. Method of Load Frequency Control: Flat frequency, flat tie line and tie line load bias control. Automatic generation control (description of block
diagram only).
Unit-3 Voltage Control: No load receiving end voltage and reactive power generation. Methods of voltage control. Synchronous phase modifier, shunt capacitors and reactors, saturable reactors, Thynstorised static VAR compensators- TCR, FC-TCR and TSC- TCR.
Unit-4 FACTS: Introduction to FACTS controllers, types of FACTS controllers, Brief description of STATCOM, Thyristor controlled series capacitors and unified power flow controller.
Unit-5 HVDC Transmission: Types of D.C. links, advantages and disadvantages of HVDC transmission. Basic scheme and equipment of converter station. Ground return. Basic principles of DC link control and basic converter control characteristics. Application of HVDC transmission.

Reference/Suggested Books
1. K.R. Padiyar – HVDC Power Transmission Systems. NEW AGE PUB
2. HVDC Power Transmission System, K.R, Padiyar, Wiley Eastern Ltd., 1990
3. E.W. Kimbark, Direct Current Transmission Vol: 1 Wiley Interscience, 1971.
4. J. Arrillaga, H.V.D.C Transmission, Peter Peregrines, 1983.
5. J. Arrillaga HVDC et. al, Computer Modelling of Electrical Power System. John Wiley 1993.
6. R.D. Begamudre, E.H.V. A.C. Transmission, Wiley Eastern Ltd., 2nd edition.
7. S. Rao, EHV-AC and H.V.D.C. Transmission Engineering Practice, Khanna publishers, 1990.
8. R. D. Begamudre, “Extra High Voltage AC Transmission Engineering” Wiley Eastern.