关键词： 电力系统潮流计算 牛顿拉夫逊法潮流计算
P-Q 分解法 MATLAB Simulink
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Abstract
Power flow calculation of power system is a kind of extremely important in the power system analysis and calculation, It play an important part in studying system planning and operation of the proposed all sorts of problems. In power system planning, through the power flow calculation can institute of electric power system planning. We can found the system can meet the requirements of all kinds of operation mode or not; For the running of power system, through the power flow calculation can predict all kinds of load changes and changes in the structure of network will endanger the safety of the system, all the bus in the system voltage is within the allowed range, system of various components (line, transformer, etc.) will appear over load, and possibly a load should be adopted in advance what precautions, etc. Power flow calculation is the most basic power system analysis calculation. It play an important role in itself ,besides， the power flow calculation and network loss calculation, the static security analysis, small signal static stability calculation, transient stability calculation, short circuit calculation, an important basis of static and dynamic equivalent calculation. Actual power system power flow calculation mainly use the Newton - Ralph method. According to the different voltage, Newton - Ralph monson tide computation could be selected respectively two cartesian coordinates and polar form. This calculation using the cartesian coordinates of Newton - Ralph method, Newton - Ralph method has good convergence, but requires the right initial value. Lack of a graphical user interface of traditional power flow calculation program, the results showed not difficult integration with other analysis function directly. The original data input needs a lot of work and prone to error. So, this design of the simulation is based on MATLAB7.0 /simulink/SimPowerSystems under the Windows 2007 operating system. The simulation using the Newton-Raphson method algorithm. The MATLAB control has become the most popular in international community, it is the most widely used language. Its powerful matrix processing bring many convenience to electric power system analysis, calculation, and USES the MATLAB interface intuitive, stable running, accurate calculation. So the course design is calculated using the MATLAB programming.
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摘要
电力系统的潮流计算是电力系统中极其重要的一种分析计算，主要用以研究系统在规划 和运行中提出的各种问题。在电力系统的规划中，通过潮流计算可以检验所提出的电力系统 规划方案能否满足各种运行方式的要求；对运行中的电力系统，通过潮流计算可以预知各种 负荷变化和网络结构的改变会不会危及系统的安全，系统中所有母线的电压是否在允许的范 围以内，系统中各种元件(线路、变压器等)是否会出现过负荷，以及可能出现过负荷时应事 先采取哪些预防措施等。 潮流计算是电力系统分析中最基本的计算。除对它本身的重要作用之外，潮流计算还是 网损计算、静态安全分析、小干扰静态稳定计算、暂态稳定计算、短路计算、静态和动态等 值计算的重要基础。 实际电力系统的潮流计算主要采用牛顿-拉夫逊法。按电压的不同，牛 顿-拉夫逊潮流计算可分别选用直角坐标形式和极坐标形式两种。 本次计算采用直角坐标形式 下的牛顿-拉夫逊法，牛顿-拉夫逊法有很好的收敛性，但要求有合适的初值。 传统的潮流计算程序缺乏图形用户界面，结果显示不直接难与其他分析功能集成。网络 原 始 数 据 输 入 工 作 大 量 且 易 于 出 错 。 本 设 计 的 仿 真 基 于 Windows 2007 操 作 系 统 下 的 MATLAB7.0/Simulink/SimPowerSystems。仿真采用了牛顿拉夫逊法 目前 MATLAB 已成为国际控制界最流行、使用最广泛的语言了。它的强大的矩阵处理功能 给电力系统的分析、计算带来很多方便，而且采用 MATLAB 界面直观，运行稳定，计算准确。 所以本次课程设计程序设计采用 MATLAB 计算。
信息科学与工程学院 课程设计报告书
( 2015～2016 学年 第 一 学期 )
题
目
电力ห้องสมุดไป่ตู้统的潮流分析与计算
院（系、部） 课 程 名 称 专 班 学 业 级 号
电气工程系 电力系统综合自动化课程设计 电气工程及其自动化
学 生 姓 名 指 导 教 师 王荣坤
年
月
日
1
目录
摘要...................................................................................................................................................... 3 Abstract.............................................................................................................................................. 4 第 1 章 概述........................................................................................................................................ 5 1.1 设计目的............................................................................................................................... 5 1.2 设计题目............................................................................................................................... 5 1.3 设计内容和要求................................................................................................................... 6 1.4 潮流计算算法的研究现状及发展趋势............................................................................... 6 1.4.1、研究现状.................................................................................................................. 6 1.4.2、发展趋势.................................................................................................................. 7 1.5 设计思路............................................................................................................................... 7 第 2 章 参数计算.............................................................................................................................. 8 2.1 变压器参数........................................................................................................................... 8 2.2 线路参数............................................................................................................................. 10 2.3 发电机参数......................................................................................................................... 11 2.4 数学模型............................................................................................................................. 11 第 3 章 MATLAB/Simulink 的电力系统仿真................................................................................. 12 3.1 Simulink 的扩展模块库 SimPowerSystems 的介绍（版本 MATLAB2010b）................. 12 3.2 SimPowerSystems 专用模块库具体模块介绍.................................................................. 13 3.2.1、基本模块................................................................................................................ 13 3.2.2、Powergui 模块....................................................................................................... 14 3.3、基于 MATLAB/Simulink 的电力系统仿真模型的构建................................................... 17 3.3.1 各元件参数设置...................................................................................................... 17 3.4 仿真结果及分析................................................................................................................. 24 第 4 章 结束语与参考文献.............................................................................................................. 25 4.1 总结语.................................................................................................................................. 25 4.2 参考文献.............................................................................................................................. 25