The Research Of The Simulation With The Excitation System Of The Synchronous Generator Based On DSP

A power system dynamic simulation laboratory reproduction of the power system, the physical processes Research on power system operation rules and the development of the power system of new technologies and equipment has very important significance. Simulation of synchronous generator excitation system in the power system dynamic simulation laboratory for the excitation system simulation power system dynamic simulation of the important components.Synchronous generator excitation system simulation is composed of three parts, excitation power modules, AVR and negative resistance device. This paper first analysis of the text of the synchronous generator excitation mode from the point of view of the excitation power modules, and on this basis using SCR excitation system simulation program, since the simulation of semiconductor excitation and John, two excitation, 3 excitation mode. In comparison with analogue digital regulator advantages and disadvantages, design of high-speed digital signal processor TMS320LF2407A as control of nuclear Computer AVR to achieve the excitation system digital. As simulation of the synchronous generator excitation winding time constant than the prototype excitation winding time constant, for a true simulation of the synchronous generator excitation system to ensure that the simulation generator excitation winding time constant consistent with the prototype, the excitation winding circuit using NDR negative resistance device to contribute to the excitation current, increasing excitation winding time constant Td o. Based on the analysis of negative resistance device principle, summing up and introduced a variety of new domestic negative resistance device, the paper design of the transistor-negative resistance device for the system.The paper design of the system and the main loop control circuit diagram and the PCB on the basis of describing the principle of the simulation of excitation system. The paper presents the simulation of excitation system hardware design, given all the hardware schematic diagram, completed a control circuit PCB design and debugging of the hardware and software, summed up the experience with the issues and the next phase of work, for further in-depth study and realize the simulation of excitation system laid the foundation.