Research On Optimal Control Strategy Of Static Var Generator

Static var generator SVG is the most advanced technology of reactive power compensation.In this paper,the corresponding optimization measures are put forward to improve the response speed,the compensation accuracy and the stability of the whole device.Analyzed the reactive power and harmonic detection technology,control technology and the corresponding improvement of SVG in this paper,in view of the problem of the accuracy of dq detection algorithm,a phase locked loop control strategy based on the delay signal is proposed,this phase locking strategy can achieve accurate phase locking and strong adaptability even in the non ideal grid conditions;By comparing with the traditional voltage and current dual PI decoupling control method,the proposed method is based on the modern control theory.The method is able to realize the complete decoupling of nonlinear systems.This method can be used to improve the current tracking performance of the PI controller.This paper proposed the corresponding optimization and improvement control,MATLAB simulation,DSP programming,prototype test,verify the effectiveness of the proposed strategy in the SVG system,and realize the effective compensation of reactive power and harmonic compensation in SVG system.