Thyristor Controlled Reactor (TCR)

The function of TCR is like a variable reactance, changing the trigger angle can change the reactance value, because the applied AC voltage is constant, changing the reactance value can change the fundamental current, thereby causing the reactor to absorb reactive power changes. However, when the triggering angle exceeds 90. In the future, the current will become non sinusoidal, resulting in harmonics. If two thyristors trigger symmetrically in the positive and negative half waves, only odd harmonics will be generated. Harmonics can be obtained through Fourier analysis of higher frequency components.

Due to the requirement for controllable capacitive reactive power in power system applications, a capacitor is connected in parallel to the TCR. This capacitor can be fixed or switchable, using mechanical switches or thyristor switches. The main advantages of TCR are control flexibility and easy scalability. Different control strategies can be easily implemented, especially those involving external auxiliary signals to significantly improve system performance. The reference voltage and current slope can be controlled in a simple way. Due to the modular nature of TCR type SVC, expansion can be achieved by adding more TCR modules, provided that the capacity of the coupling transformer is not exceeded.

TCR does not have a large overload capacity because its reactor is designed with a hollow core. If the TCR is expected to withstand transient overvoltage, it is necessary to add short-term overload capability in the design of the TCR, or install additional thyristor switching reactors for use in case of overload.

The response of TCR is rapid, with a typical response time of 1.5 to 3 cycles. The actual response time is a function of measurement delay, TCR controller parameters, and system strength.

TCR BKGKL series Thyristor-controlled shunt reactor (TCR) is an important component of static var compensator(SVC). SVC normally consists of a combination of thyristor-controlled reactors(TCR ), thyristor-switched capacitors and reactors (TSC and TSR), mechanically-switched capacitor banks (MSC) and harmonic filters(HF). TCR is capable to change the reactive power capacity and to maintain the stability of voltage dynamically.

Ordering Information:

Nominal system voltage

Rated current

Rated inductance

Maximum operating voltage of system

Mode of installation：horizontal

Working environment (indoors or outdoors)

Angle between inlet and outlet

Other special requirement

Product Standard:

GB/T 1094.6-2011     IEC 60076-6：2007

GB/T 1094.1-2011     IEC 60076-1：2011

GB/T 1094.3-2017     IEC 60076-3：2013

 Technical parameter table：

1 Above technical parameters are only for aluminum windings. For copper windings, we would provide separately.

2 The products produced by Shanghai Zhiyou include but are not limited to the products listed in the table. If the customer has specified parameters, they need to confirm separately.

3 The data in the table are only for reference. The final interpretation right is owned by Shanghai Zhiyou.

Ordering Notice:

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