Characteristic performance of thyristor controlled reactor used in reactive power control

The performance characteristics of the basic type of static, thyristor-controlled shunt compensators are presented. In particular, the effects of the natural frequency of the compensators and the firing angle of the thyristor are studied. An inherent dependency between a TCR natural frequency and the circuit power frequency is demonstrated. According to this dependency, TCR circuits with a natural frequency that is a multiple of the circuit power frequency exhibit an increase in the harmonics of the circuit