Simulation and Study of SVG Based on New Direct Current Control Strategy

To improve the real-time performance and accuracy of the SVG,this paper presents a new DC control strategy based on the instantaneous reactive power theory id-iq method.The paper firstly analyzes the id-iq method of the instantaneous reactive-power theory in terms of collection and calculation of the reactive current signal.On this basis,the mathematical model of the SVG is established with the reactive current closed-loop control strategy adopted and the id-iq method used to detect the real time reactive current to improve the system response speed.Then the data sampling,reactive current calculation and real-time control performance etc are tested in the MATALAB simulation circuit.Finally,through theoretical analyses and simulations,it is clearly shown that the design scheme is feasible and meets the requirements for quick real-time reactive power compensation,and helps to improve the stability of the system operation.