MATLA在电力系统工程中的应用.doc

摘要 随着计算机语言技术的不断发展与成熟，MATLAB软件在电力系统中的应用越来越重要。针对这一现状，本文对MATLAB软件应用于电力系统潮流计算与故障仿真分析的可行性做出了研究。 潮流计算是电力系统的一项重要分析功能,是进行故障计算,继电保护整定,安全分析的必要工具。本文提出了利用MATLAB语言来进行电力系统潮流计算。通过算例,说明了该方法编程简便、运算效率高并符合人们的思维习惯,计算结果与理论计算相符,验证了该方法的有效性。 电力系统事故具有突发性强、维持时间短、复杂程度高、破坏力大的特点。本文建立了高压输电线路的仿真模型，利用该模型实现了对高压输电线路故障的数字仿真。结果表明，所建立的模型简单、方便，利用MATLAB进行仿真具有较高精度，满足工程实际要求，使用MATLAB对电力系统故障进行仿真的方法是可行的。 关键词：电力系统、潮流计算、故障仿真 ABSTRACT With the development of the computer languages in recent years, MATLAB software in the application of power system is more and more important. The paper analyzed the feasibility in power system include the power flow calculation and fault simulation using MATLAB software. Flow calculation is an important analysis function of power system and is the necessary facility of fault analysis, relay protection setting and security analysis. The MATLAB language is used to calculate flow distribution of power system in this paper. The typical examples explain that the method has the characteristics of simple programming, high calculation efficiency and matching people habit. The calculation result can satisfy the engineering calculation needs and at the same time verify the usefulness of the method. Also using SIMULINK mathematical module，the simulation of accurate fault of high voltage power transmission lines is implemented．Simulation results show that the built model is simple and easy to use，the accuracy of simulation results by use of MATLAB are satisfactory and can meet the requirement of engineering．This case illustrates using MATLAB simulation for power system malfunction is feasible. Key words: Power System, Power Flow Calculation, Fault Simulation  目录 1 绪论 ……………………………………………………………1 2 MATLAB在电力系统分析中的优势 ……………………………3 2.1 电力系统运行及其故障简介 ……………………………………3 2.2 MATLAB软件特点 …………………………………………………5 2.3 小结 ………………………………………………………………9 3 MATLAB程序语言在潮流计算中的可行性分析………………10 3.1 引言 ………………………………………………………………10 3.2 几种新型的潮流计算方法介绍 …………………………………10 3.3 建立电力系统实例数学模型 ……………………………………13 3.4牛顿－拉夫逊法概述 ………