CONTROL APPARATUS OF THYRISTOR CONTROLLED REACTOR FOR STATIC VAR COMPENSATOR

摘要

it is provided between the power line and load line to compensate for line current due to static reactive power compensation Power machine TCR control apparatus are disclosed. The TCR control device, each of the normal minute by converting the load current to the value of the synchronous rotary coordinate system for calculating the normal dequeue minutes reactive current computing section and the current, converts the load current value of each phase with the negative sequence synchronously rotating coordinate dequeue effective current and negative sequence current to negative sequence calculating unit for calculating the reactive current, a reactive current and the normal minute, negative sequence current and negative sequence effective using reactive current or comprising a compensating current calculation for calculating the respective compensation on the current loop control; The error value of the reactive power line calculating unit for calculating a reactive power of each of the line from each of the line voltage and the line current due to the power, and the reactive power of each phase line and the predetermined reference reactive power to control piahyi (PI) closed-loop control unit containing a reactive power controller for calculating a compensation value for each of the reactive power; And it includes a phase in the open-loop control of the compensation current and firing angle calculated in the calculation to determine the firing angle of the TCR by the reactive power compensation value calculated by the closed loop control. ;