MATLAB频率分析大学课程设计.docVIP

基于MATLAB的频率分析 摘 要 电力系统在实际运行中，频率时时刻刻都在发生着大大小小的波动。电力系统的安全运行要求使得仿真成为一种必不可少的手段。 MATLAB语言具备高效、可视化及推理能力强等特点，是目前工程界流行最广的科学计算语言。特别是在电子通信领域，MATLAB常常被用于进行电路、信号与系统、数字信号处理等多个方面的理论验证与演算求解。将MATLAB软件引入到电力系统分析中，大大地提高了计算精度和工作效率，为频率分析提供了一个有效的辅助工具，是电子工程人员不可或缺的辅助工具软件。 本文阐述了电力系统频率变化产生的原因及危害,进而分析了频率的不同对设备运行的影响，还利用了傅里叶变换对多波段频率进行了分析。论文中还简单介绍了Matlab软件中的仿真工具Simulink，以及其中的Power System工具箱，并结合了事例说明。 通过Matlab对电力系统频率变化的仿真，进一步证明仿真的必要性和可行性，证明了Matlab是实验室中不可或缺的仿真工具，为今后对电力系统的深入研究打下基础。 关键词：频率分析 傅里叶变换 仿真 电力系统 Abstract Power systems in actual operation, the frequency at all times in the event of large and small fluctuations. Safe operation of the power system as an essential requirement that the simulation means. MATLAB language with efficient, visualization and reasoning ability and other characteristics, is currently the most widely popular science engineering computing language. Especially in the field of electronic communications, MATLAB is often used for circuits, signals and systems, digital signal processing and other aspects of the theory and algorithms for solving verification. MATLAB software will be introduced to the power system analysis, greatly improved the accuracy and efficiency of frequency analysis provides an effective support tool is indispensable electronic engineering personnel supporting tools. This paper describes the power system frequency variation causes and hazards, and then analyzes the frequency of the different impact on equipment operation, but also the use of the Fourier transform of the multi-band frequency were analyzed. Paper also introduces the Matlab software simulation tool Simulink, as well as the Power System Toolbox, combined with examples to illustrate. By changing the frequency of the power system Matlab simulation, further evidence of the necessity and feasibility of the simulation proved indispensable laboratory Matlab simulation tools for future in-depth study of the power system to lay a foundation.Keywords: Frequency analysis Fourier transfo