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摘要潮流计算和静态安全分析是电力系统稳态分析领域最重要的两部分内容。本文的主要介绍的是潮流计算。当今时代，电力系统有着诸多特点，比如大系统，多元件以及强非线性。因此，潮流计算已经成为电力系统规划和运行的不可替代的研究方法。目前人们在解决潮流计算问题的时候，计算机软件的计算速度总是不尽如人意，难以满足大规模电网模拟和实时控制的仿真要求。科学技术的发展使得计算机技术发生着日新月异的变化，这一切都为使用MATLAB快速详尽的解决大电网仿真问题准备了条件。潮流计算已经成为电力网络规划及运行中最常用的运算方法，为了求得不同电网中各节点的电压及元件损耗，工作人员经常根据潮流计算的结果来确定配电网的规划及运行方案。39877
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潮流计算软件PSAT是MATLAB的一个工具箱, 具有潮流计算，时域仿真等功能，而且操作界面简单易懂。本文概述了PSAT的功能和特点首先对电力系统潮流计算中常见的几种算法选择了14节点和24节点两个系统作为潮流计算案例，分别用NR法以及P-Q分解法进行计算，再对两种算法的迭代次数和计算时间对比分析，可以得出以下结论：针对目前配电网大系统，多节点的特点，P-Q分解法在求解大规模系统时，计算时间明显缩短，符合现代电力网络潮流计算的需要。
毕业论文关键词： PSAT 潮流计算 电力系统 MATLAB语言
AbstractPower system steady state includes the analysis of power flow calculation and static security analysis. The power flow is mainly introduced in this paper. Power flow calculation is the basic method of planning, operation of the power system, with the development of modern power system, and the system of strong nonlinear multi element characteristics have become increasingly prominent, the amount of calculation and the computational complexity increased dramatically. In the calculation of processing trend, the speed of the computer software has been unable to meet the requirements of large power system simulation and real-time control, and study the related software flow problem has become the key to efficient simulation of large scale power systems. With the continuous development of computer technology and mature, the computation of MATLAB power flow has opened up new ideas for solving the problems of large power grid simulation technology, with fast. Power flow calculation is the most basic operation design and operation of the power network, the power network of various design schemes and different operation mode for power flow calculation, can get the voltage of each node of the grid, power loss and the power flow and network element in the, and then obtain the power loss.
PSAT flow calculation software is based on MATLAB, with a graphical user interface based, set drawing, analysis, calculation and data management as one of the free software. First, a brief overview of the PSAT functions and features, combined with the two tidal current calculation results indicate that the key problem of establishing the model, parameter setting of the power network, and finally get the correct results.
Key words： Flow calculation Power System
目 录
摘 要 I
Abstract II
1 绪论 1
1.1 课题研究背景及意义 1
1.2 国内外研究现状 1
1.3 本论文的主要工作 2
2 PSAT工具箱的简要分析 3
2.1 系统主界面及模型库 3
2.2 PSAT工具箱模型库 4
2.3 PSAT工具箱的主要功能 6
2.3.1 潮流计算 6
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