基于MATLAB的电力系统潮流计算

基于MATLAB的电力系统潮流计算(论文12000字)
摘要：随着如今社会的快速发展，电能越来越成为人类生活中不可或缺的一部分，而在这种环境下，首当其冲的问题肯定是电力系统的潮流问题。对于正在飞速发展的电力系统，潮流计算是其规模扩张过程中必备的环节。它是最基本也是最重要的电力系统计算，它可以依据给定的数据信息计算出系统的节点电压，功率及相角等，为电力系统扩建、维护、改善提供重要的数据支持。本设计适用于普通电网，分别介绍了三种常用的方法，即高斯-赛德尔法，牛顿-拉夫逊法和P-Q分解法及它们的发展历程。对MATLAB编程，Simulink，Matpower三种潮流计算的计算机软件进行了简介和列举具体实例，最后进行了结果汇总与优缺点比较。
关键词：电力系统潮流，MATLAB，牛顿-拉夫逊法，Simulink，Matpower

Power Flow Calculation of Power System Based on MATLAB
Abstract:With the rapid development of today's society, electric energy has become an indispensable part of human life. In this environment, the first problem must be the power system.  Power flow calculation is an essential part of the scale expansion process for power systems that are rapidly developing. It is the most basic and important power system calculation. It can calculate the node voltage, power and phase angle of the system according to the given data information, and provide important data support for power system expansion, maintenance and improvement. This design is applicable to the common power grid. Three common methods are introduced, namely Gauss-Seidel method, Newton-Raphson method and P-Q decomposition method and their development history. The computer software of MATLAB programming, Simulink and Matpower three power calculations are introduced and enumerated concrete examples. Finally, the results are summarized and compared with the advantages and disadvantages.
Key words:Power system power flow, MATLAB, Newton-Raphson method, Simulink, Matpower

目 录
1 引言..............................................................................................................................................1
1.1 课题的目的...............................................................................................................................1
1.2 课题的意义...............................................................................................................................1
  1.3 潮流计算发展简史及前景.......................................................................................................1
2 简单电力系统的潮流计算..............................................................................................2
  2.1 简单辐射网络潮流计算...........................................................................................................2
     2.1.1简单支路的计算...............................................................................................................2
     2.1.2辐射型网络的手工潮流计算...........................................................................................4
  2.2 简单环形网络的潮流计算.......................................................................................................4
3 复杂电力系统的潮流计算..............................................................................................5
  3.1 计算机潮流计算的步骤...........................................................................................................5
  3.2 计算机算法简介.......................................................................................................................6
  3.3 潮流计算约束条件...................................................................................................................6
  3.4 节点导纳矩阵...........................................................................................................................7
  3.5 高斯-赛德尔法潮流计算..........................................................................................................8
     3.5.1 迭代格式..........................................................................................................................8
     3.5.2 迭代步骤..........................................................................................................................8
     3.5.3 对网络中PV节点的考虑................................................................................................8
  3.6 牛顿-拉夫逊法潮流计算（直角坐标）..................................................................................9
     3.6.1 牛顿-拉夫逊法简介.........................................................................................................9
     3.6.2 节点功率方程式............................................................................................................10
     3.6.3 修正方程式....................................................................................................................10
     3.6.4 求解流程图....................................................................................................................11
  3.7 P-Q分解法潮流计算................................................................................................................12
     3.7.1 P-Q分解法的修正方程式...............................................................................................12
     3.7.2 P-Q分解法潮流计算的步骤和特点...............................................................................13
4 基于MATLAB的潮流计算................................................................................................14
4.1 MATLAB编程计算....................................................................................................................14
4.1.1 MATLAB背景及优势......................................................................................................14
     4.1.2 给定电网接线图及参数..............................................................................................14
4.1.3 潮流计算流程图..........................................................................................................15
4.1.4 运行结果......................................................................................................................16
4.2 Simulink仿真计算.................................................................................................................20
4.2.1 Simulink简介..............................................................................................................20
 4.2.2 简单电网模型..............................................................................................................20
4.2.3 系统仿真计算..............................................................................................................21
4.3 Matpower仿真计算...............................................................................................................23
4.3.1 Matpower简介.............................................................................................................23
     4.3.2 计算方法......................................................................................................................24
     4.3.3 Matpower仿真解决.......................................................................................................26
5 结论............................................................................................................................................28
参考文献.......................................................................................................................................31
致谢.................................................................................................................................................33
附录.................................................................................................................................................34