Development of Dynamic Var Compensator Based on 12-pulse Thyristor Controlled Reactor

This paper analyzes characteristic harmonic currents of TCR and presents a method to reduce the harmonics by means of phase-shift transformer. It also introduces the constitution and implements methods of compensating device. Some key solutions for developing TCR device are introduced, such as reactive currents detection, control algorithm and the realization of controller based on ATmegal28 microcomputer. Finally, the data of field test is analyzed