Dsp F2812-based Static Reactive Devices In Research

Power equipment and power electronic device consume a lot of reactive power in the process of using. As a result, it leads the problem of power factor declining, voltage fluctuation flicker, unbalanced three-phase and so on.Reactive compensation is an indispensable technology to guarantee the stable operation of modern power system. Static Var Generator (SVG) has developed for many years, and it has achieved comparatively perfect level. It can detect accurately the reactive current to be compensated, and then construct a stable system which can compensate the reactive power timely.To begin with, I introduce the development course of existing reactive compensation theory and reactive compensation devices, and then analyze the development status and superior performance of the Static Reactive Power generator (SVG). Then, I review instantaneous reactive power theory and the development process of the theory of reactive power briefly, and then emphasize the instantaneous power theory , the Static Synchronous Compensator's test methods of pq, ip, iq, dq which is based on the instantaneous power theory and the control theory of the Static Reactive Power generator (SVG). Finally, on the base of MATLAB I established SVG circuit model using Simulink.On the base of DSP2812, I design the software flow chart of the Static Reactive Power generator (SVG), and then I simulate this algorithm using MATLAB which is a simulation software. In different power grid cases, I contrast and analysis the control effect of the Static Reactive Power generator (SVG) which is adopted the double closed loop control method and the traditional PI control method. Results show that the double closed loop control method has a good dynamic performance.