Reactive Power Control of Compound Reactive Power Compensation Device

A low-cost composite reactive power compensation model is proposed. The model consists of a Thyristor Switched Capacitor (TSC), a Thyristor Controlled Reactor (TCR) and a Static Var Generator (SVG). Firstly the paper completes the preliminary compensation by the large-capacity TSC+TCR module, and then the small-capacity SVG is responsible for subsequent fine compensation and suppression of voltage flicker. This two modules work together to improve the best in performance; the TSC+TCR adopts a method based on In the selective configuration strategy of the historical state, The output will change in a fixed form, the SVG adopts the direct current control, SVG is equivalent to a controlled current source, Feedback Control of SVG Output Current Instantaneous Value Using Tracking PWM Technology; the Simulink simulation model is established to verify the effectiveness of the composite reactive power compensation device. The simulation results show that the control strategy has the advantages of fast response and good compensation effect.