Simulation Based TSC-TCR Static VAR Compensator In Closed Loop Operation For Dynamic Reactive Load
In this paper proposed topology work deals with a firing angle range control and minimization of harmonics in
thyristor controlled reactor (TCR) and transient free switching of thyristor switched capacitor (TSC). In recently Static VAR
Compensators generally consists of a thyristor switched capacitor (TSC) and a thyristor controlled reactor (TCR) and
compensates loads through generation or absorption of reactive power. The operation of thyristor controlled reactors at
appropriate conduction angles can be used advantageously to meet the phase-wise unbalanced and varying load reactive
power demand in a system. However, such as an operation deteriorates the quality of power supply through percolation of
harmonic currents generated into the mains. This topology proposes how the delta connected TCR minimizes the harmonic
components and transient free switching operation of TSC bank. Harmonics in the SVC can be minimizing by controlling
the firing angle within the range of TCR. Also it provides almost step less variation of reactive power.
Keywords— Firing angle, TSC, TCR, Transient Free Switching, Conduction Angle.