Damping of low frequency oscillations in a hydro-thermal power system using thyristor controlled series compensator. (2017)

• Record Type: Journal Article
• Authors: Deepak, M.; Senapati, Dibyaranjan; Abraham, Rajesh Joseph
• Is Part Of: International journal of power and energy conversion. Volume 8:Number 1(2017)
• Page Start: 1
• Page End: 19
• Publication Date: 2017
• Subjects: thyristor controlled series capacitor -- TCSC -- automatic generation control -- AGC -- ISE technique -- integral squared error -- oscillation damping -- low frequency oscillations -- hydro-thermal power -- flexible AC transmission system -- FACTS -- step load perturbation -- simulation; Energy conversion -- Periodicals; Power resources -- Periodicals; Electric power production -- Periodicals; 621.31205
• Languages: English
• ISSNs: 1757-1154

Abstract

Thyristor controlled series capacitor (TCSC) is a series type flexible AC transmission system (FACTS) device which can effectively change the impedance of a transmission line. This paper is concerned with developing a linear incremental model for a TCSC and its application to improve the performance of automatic generation control (AGC) of two-area interconnected hydrothermal power system. The optimised integral gain values of AGC are obtained using integral squared error (ISE) technique. A quadratic performance index considering a step load perturbation in either of the areas is considered for minimisation. Simulation results suggest that, incorporating a TCSC is very effective in damping the low frequency oscillations in area frequencies as well as the tie-power after a sudden load perturbation in any of area compared to AGC without TCSC.