SVC REACTIVE PREDICTIVE COMPENSATION METHOD FOR RECTIFIER LOAD

摘要

A static VAR compensator (SVC) reactive predictive compensation method for rectifier load, the method comprises the following steps: 1) a rectifier controller calculating a triggering angle and simultaneously calculating the reactive power to be generated by a load, and transmitting the rectifier load reactive power to an SVC controller; 2) the SVC controller receiving the predicted reactive power sent by the rectifier controller, collecting the switching state of a filter branch circuit breaker, and simultaneously collecting a power grid current and power grid voltage signal for calculating reactive compensation quantity, and finally realizing trigger control compensation with the trigger angle method; and 3) after predictive compensation, compensating a deviation caused by the reactive power calculation via a PI governing loop. The method can effectively compensate a large amount of rapid reactive impact in the working process of the load via a SVC device, and the SVC device has short response time, thus able to achieve the objective of rapid reactive power compensation, and can effectively inhibit the impact of the reaction to the power grid, thereby eliminating voltage flicker.