仿真电力系统短路故障分析诊断

仿真电力系统短路故障分析----------------------- -----------------------日期：本科生毕业设计（论文）题 目：运用 Matlab 仿真分析短路故障 学生：系 别：机电系专业年级：电气工程与其自动化专业 指导老师：2013 年 6 月 20 日摘 要 本文先对电力系统的短路故障做了简要介绍，分析了线路运行的基本原理与其运行特点，并对短路故障的过程进行了理论分析。在深化分析三相短路故障的稳态和暂态电气量的基础上，总结论述了当今三相短路的的各种流行方案，分别阐述了其基本原理和存在的局限性。并运用派克变换与 d.q.o 坐标系统的发电机基本方程和拉氏运算等对其中的三相短路故障电流等做了详细的论述。并且利用 Matlab 中的 simulink 仿真软件包，建立了短路系统的统一模型，通过设置统一的线路参数、仿真参数。给出了仿真结果与线路各主要参数的波形图。最后根据仿真结果，分析目前自动选线法存在的主要问题与以后的进展方向。关键词：短路故障；派克变换；拉氏运算；MatlabABSTRACTThis paper first on the three-phase short circuit of electric power system is briefly introduced, analyzed the basic principle of operation of three-phase circuit and its operation characteristic, and the three-phase short circuit fault process undertook theoretical analysis. In depth analysis of three-phase short circuit fault of steady state and transient electrical quantities based on the summary, the three-phase short circuit of various popular programs, respectively, expounds its basic principles and limitations. And the use of Peck transform and d.q.o coordinate system of the generator basic equation and Laplace operator on the three-phase short-circuit current in detail. And the use of Matlab in the Simulink simulation software package, to establish a unified model of three-phase short-circuit system, by setting the unified circuit parameters, the simulation parameters. The simulation results are presented and the main parameters of the waveform of line. Finally, according to the simulatio...