Impact of Thyristor Controlled Series Capacitor Insertion on Short-circuit Calculation in Presence Phase to Earth Fault

Mohamed Zellagui, Abdelaziz Chaghi,

International Journal of Applied Power Engineering (IJAPE), Vol 1, No 2: August 2012 , pp. 93-104

Abstract

This research paper presents a study on phase to earth fault short-circuit calculation with fault resistance on a single transmission line 400 kV in eastern Algerian transmission networks at Algerian Company of Electricity and Gas (Sonelgaz Group) compensated by series Flexible AC Transmission System (FACTS) i.e. Thyristor Controlled Series Capacitor (TCSC) installed in midline. The facts are used for controlling transmission voltage, power flow, reactive power, and damping of power system oscillations at high power transfer levels. The direct impacts of TCSC insertion on the total impedance, active power and reactive power a electrical transmission line and also parameters of short-circuit : symmetrical currents, line currents, symmetrical voltages and line voltages are carried out. More the effects of injected voltage by TCSC for three case studies are presented.

Transmission line; TCSC; Voltage injected; Reactance injected; Earth fault; Symmetrical components