A Method of Calculating Reactive Power in SVC and Its Application in LabVIEW Based on Instantaneous Reactive Power Theory

High power electronic and FACTS devices provide power system with quick and dynamic responses, yet the methods based on traditional definitions of reactive power can not fulfill the demand, so the instantaneous reactive power theory is used to detect the reactive power in SVC system. It analyses the principle of instantaneous reactive power theory, and deduces the formula to calculate the instantaneous reactive power in SVC system, and employs a sliding window to calculate the average reactive power. New method is applied in virtual instrument software LabVIEW and the simulation is finished , the results of which show that the method is efficient in detecting reactive power in SVC system and thus provides application in designing the monitor and control system of SVC.