STATIC RELAYS
Power systems protection and its requirements - conventional Vs static relays - steady state and transient performance of signal deriving elements, signal mixing techniques and measuring techniques.
Over current protection - instantaneous over current relay – directional over current relay – applications – differential relays - generator and transmission line protection.
Static relay circuits for generator loss of field, under frequency, distance, impedance, reactance, mho and special characteristics - reverse power relays
Static relay circuits for carrier protection and testing of relays - Static relay circuits - tripping circuits using thyristor.
Microprocessor/Microcontroller based Relays-Hardware and software for the measurements of voltage, current, frequency and phase angle-implementation of over current, directional, impedance and mho relays.
Ram.B., `Fundamentals of Microprocessors and Microcomputers', M/s. Dhanpat Rai & sons, New Delhi, 1992.
Madhava Rao, T.S., 'Power System Protection - Static Relays', McGraw Hill, New Delhi, 1991.
Van.C.Warrington, 'Protective Relays - Their Theory and Practice', Vols. I & II, Chapman & Hall Ltd. London, 1994.
