An application of thyristor controlled series capacitor to single-pole reclosing

This paper presents an adaptive short-time compensation and reclosing technique for improving power system stability and reducing turbine-generator shaft torsional torques. The fundamental concept of the proposed technique is to interrupt single line-to-ground faults on double-circuit transmission lines using single-pole switching. The transmission system is then balanced using a thyristor controlled series capacitor (TCSC) in the interrupted phase. Adaptive reclosing is then applied to reclose the tripped phase and the compensating capacitor is switched off. The validity and effectiveness of the proposed technique are demonstrated through time-domain simulation studies on a test system using the EMTDC program.