Research On SVG Reactive Power Compensator Based On DSP

In the design and operation in the field of AC power, reactive power is an important factor to consider; at the same time in the field of electrical technology it also plays a very important role. Along with the rapid development of power industry, our country has gradually formed a wide range of high voltage power transmission network, at the same time the requirement of reactive power of power grid is more strict. Reactive power for power generation, transmission and distribution is extremely important, the normal operation of the reactive power on the system load is equally very important.In this paper, the reactive power generation and physical meaning, and the two kinds of reactive power theory and the conventional reactive power theory and instantaneous reactive power theory are analyzed. Through the research on the principle of SVG, the basic work of the main circuit topology and the current voltage characteristics, focusing on the real-time detection method of reactive current calculation method and direct current control strategy is studied. The model of MATLAB/Simulink to build the simulation for SVG system, and the different nature load simulation experiment were carried out to verify the correctness of the theory. Based on the TMS320F2812chip of TI Company as a core, the hardware and software design of static var generator parts are finished. The hardware part mainly includes the three-phase power supply and load, the main circuit, the signal detection circuit and the control circuit; The software includes the main program initialization module, protection module, A/D sampling module, voltage zero crossing detection module, dq transform and inverse transform module, digital PI controller module and PWM Modulation method. Finally, the experiment verifies the theory and simulation of SVG...