Answer / rahul

basically fc tcr(fixed capacitor-thyristor controlled reactor)in this device the Q value of the capacitor is constant as the capacitor is a fixed one and we can get the required reactive power by varying the Q of inductor using thyristors.
Q(REQ)=QCAP-QTCR
FOR TSC(THYRISTOR SWITCHED CAPACITOR) here we can vary the thyrisors in only two ways ie full or partial conduction.
but in tcr we can vary the thyristors angle from 0-180(deg)
usally a combination of tcr and tsc,tsr makes a svc

Answer / mitesh22

FC-TCR(Fixed capacitor Thyristor controlled Reactor) is the device in which rating of capacitor is fixed & it is decided according to load demand.it is used to supply extra reactive power to the load to make power factor unity and reactor is connected with series back to back connected thyristor. so reactor is varied continuously by partial conduction control of the thyristor valve. and it is comes in picture when light load or load is decreased at that time extra reactive power is absorbed by this reactor.
TSC(Thyristor Switched Capacitor) is shunt connected thyristor switched capacitor whose effective reactance is varied in a step wise manner by full or zero conduction operation of the thyristor valve.

Answer / swapnil

basically fc tcr(fixed capacitor-thyristor controlled reactor)in this device the Q value of the capacitor is constant as the capacitor is a fixed one and we can get the required reactive power by varying the Q of inductor using thyristors.
Q(REQ)=QCAP-QTCR
FOR TSC(THYRISTOR SWITCHED CAPACITOR) here we can vary the thyrisors in only two ways ie full or partial conduction.
but in tcr we can vary the thyristors angle from 0-180(deg)
usally a combination of tcr and tsc,tsr makes a svc
As well as TSC TCR can work in Both region Capacitive to Inductive

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