论文总字数：27569字

摘 要

配电网潮流计算作为配电管理系统高级应用软件功能组成之一，本课题主要分析了配电网的特点及对算法的要求，然后建立配电网潮流计算的数学模型。由于配电网的结构和参数在很大程度上区别与输电网，所以配电网潮流计算必须采用适当的计算方法。本文是采用了前推回代法对配电网进行潮流计算，文中对前推回代法的基本原理、收敛性及计算速度等进行了分析比较。前推回代法具有编程简单、计算速度快、收敛性好的特点。本文采用该方法设计潮流程序并且对以36节点的系统进行验证，计算结果表明该方法能充分考虑到负荷的三相不平衡的影响，有较好的运算速度和准确度。

关键词：电力系统，MATLAB程序设计，三相潮流计算，前推回代法

Abstract: Power flow calculation of distribution network as a senior application software distribution management system, this paper analyzes the main features of distribution network and the requirements of the algorithm, and then the mathematical model to calculate the power flow based. Due to the structure and parameters of distribution network in a large extent and difference between transmission network, so the power flow calculation of distribution network must use the proper calculation method. This paper is the use of forward and backward substitution method for power flow calculation of distribution network, the forward and backward substitution method in this paper, the basic principle of convergence and calculation speed are analyzed and compared. With forward and backward substitution method is simple in programming, fast computation speed, good convergence characteristics. In this paper, using the method of design and verification flow program system with 36 nodes, the calculation results show that the effect of this method can fully take into account the load unbalanced, have better speed and accuracy

Keywords: power systems, phase decoupling, power flow, back/forward sweep algorithm

目 录

1.前言...........................................................4

1.1 配电网的分类和特点..........................................4

1.2 潮流计算问题的发展和配电网潮流计算的现状....................5

1.3 本设计的工作................................................6

2.配电网潮流计算方法.............................................7

2.1 配电网对算法的要求..........................................7

2.2 配电网潮流计算数学模型......................................7

2.3 配电网潮流常用的求解方法....................................7

2.4 本章小结...................................................16

3.配电网三相解耦潮流............................................17

3.1 电力系统中性点的运行方式...................................17

3.2 数学模型...................................................19

3.3 配电网的相间解耦...........................................20

3.4 算例.......................................................21

3.5 本章小结...................................................22

总 结...........................................................23

参考文献........................................................24

1. 前言

1.1 配电网的分类和特点

配电网在电力网中起重要分配电能作用。

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