Volume 2 Issue4

Thyristor Controlled Series Capacitor with Automatic Control (140157)

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Abstract : An increasingly competitive market where economic a nd environmental pressures limit their scope to expand transmission facilities.The optimiz ation of transmission corridors for power transfer has become a great importance. In this sce nario,the FACTS technology is an attractive option for increasing system operation flexibility [1],New developments in high-current,high- power electronics are making it possible to control electronically the power flows on the high voltage side of the network during both steady stat e and transient operation. In this paper a series controller from the Flexible AC Transmission System (FACTS) family called as ‘Thyristor Controlled Series Capacitor’ (TCSC) is designed using PIC microcontroller. Thyristor controlled series compensator (TCSC),is the first generation of FACTS controller,can govern line impedance through introduction of a thy ristor controlled capacitor in series with the transmission line. A grid of transmission lines ope rating at high voltages is required to transmit power from generating stations to load. In addition to transmission lines that carry power from source to load,modern power systems are highly int erconnected for economic reasons. The large interconnected transmission networks occur to fault s due to the lightning discharges and reduce insulation strength. Changing loads and atmospheric conditions are unpredictable factors. This may cause overloading of lines due to which voltage collapse takes place. All the above said things are undesirable for secure and economic oper ation of a line. These problems can be erased by providing sufficient margin of working parameter s and power transfer,but it is not possible due to expansion of transmission network. Still the required margin is reduced by introduction of fast dynamic control over reactive and active power by high power electronic controllers. The TCSC operation which we are simulating in MATL AB (i) To calculate the various resonance points in the impedance characteristics o f the TCSC w.r.t. various firing angle.

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Mr. Prashant Jagannath Bandekar , Dr. A. M. Mulla , Prof. Y. R. Atre , "Thyristor Controlled Series Capacitor with Automatic Control", IJIERT - International Journal of Innovations in Engineering Research and Technology, Volume 2 Issue4, ISSN : 2394-3696, Page No.