What is fixed capacitor thyristor controlled reactor?

SVC is basically a shunt connected static var generator whose output is adjusted to exchange capacitive or inductive current so as to maintain or control specific power variable; typically, the control variable is the SVC bus voltage.

How does a thyristor controlled reactor work?

In an electric power transmission system, a thyristor-controlled reactor (TCR) is a reactance connected in series with a bidirectional thyristor valve. The thyristor valve is phase-controlled, which allows the value of delivered reactive power to be adjusted to meet varying system conditions.

What is TSC power system?

A thyristor-switched capacitor (TSC) is a type of equipment used for compensating reactive power in electrical power systems. It consists of a power capacitor connected in series with a bidirectional thyristor valve and, usually, a current limiting reactor (inductor).

What is FC TCR?

A fixed capacitor-thyristor controlled reactor (FC-TCR) type of power factor compensator with thyristor-controlled series R-L load is analysed using an approximate and also a more exact circuit. The variation of power and power factor before and after compensation is examined for both cases.

What are the advantages of thyristor switched capacitor compared to fixed capacitors?

Advantages of TSC over mechanically switched capacitors 1. TSC provide instantaneous response to the changes in the system parameters. 2. Faster control is achieved by the switching of thyristor operated devices.

What is turn off time of SCR?

So turn off time of SCR can be defined as the interval between anode current falls to zero and device regains its forward blocking mode. On the basis of removing carrier charges from the four layers, turn off time of SCR can be divided into two time regions, Reverse Recovery Time.

How can thyristor be turned on?

Thyristor is turned on by increasing the anode current flowing through it. The increase in anode current can be achieved by many ways. Voltage Thyristor Triggering:- Here the applied forward voltage is gradually increased beyond a pt. known as forward break over voltage VBO and gate is kept open.

What is a thyristor switched capacitor?

It consists of a power capacitor connected in series with a bidirectional thyristor valve and, usually, a current limiting reactor ( inductor ). The thyristor switched capacitor is an important component of a Static VAR Compensator (SVC), where it is often used in conjunction with a thyristor controlled reactor (TCR).

What is a thyristor controlled reactor (TCR)?

Unsourced material may be challenged and removed. In an electric power transmission system, a thyristor-controlled reactor (TCR) is a reactance connected in series with a bidirectional thyristor valve. The thyristor valve is phase-controlled, which allows the value of delivered reactive power to be adjusted to meet varying system conditions.

What is a TSC capacitor used for?

A thyristor switched capacitor (TSC) is a type of equipment used for compensating reactive power in electrical power systems. It consists of a power capacitor connected in series with a bidirectional thyristor valve and, usually, a current limiting reactor (inductor).

What is the purpose of a thyristor valve?

The thyristor valve is phase-controlled, which allows the value of delivered reactive power to be adjusted to meet varying system conditions. Thyristor-controlled reactors can be used for limiting voltage rises on lightly loaded transmission lines.