摘要潮流计算的目的是合理规划和改进电网框架结构，设定无功补偿方案，满足正常运行时的调压调相需求，合理分配负荷以满足线路、变压器的设计规格要求等。而柔性元件的应用和柔性交流输电技术的发展为交流输电系统参数、输电能力、功率调节给出了新的解决方案，随之而来的是导致传统的潮流计算方法不再满足于含柔性元件的电网。67354

首先对柔性交流输电系统（FACTS）做了简单的定义和分类，并研究了目前主流的几种FACTS装置的基本工作原理和其所对应的数学模型，然后对潮流计算的概念、要求等做了基本阐述。在几种目前常用的算法中，采用收敛性能较好的牛顿-拉夫逊算法进行了研究。在对FACTS装置数学模型建立的基础上，对传统的牛顿-拉夫逊法进行了修改，使其可以用来求解含有FACTS元件的电网的潮流计算。最后使用Matlab软件通过对含STATCOM的9节点系统进行了仿真计算，从而验证本算法的可靠性和收敛性。

毕业论文关键词    潮流计算  柔性交流输电  STATCOM  牛顿-拉夫逊算法  Matlab 

毕业设计说明书（论文）外文摘要

Title  Method and Program Design for Power Flow Algorithm  Of Power System with FACTS          

Abstract

The purpose of power flow calculation is to plan and improve grid frame structure reasonable , set the reactive power compensation program to meet the needs of the voltage regulation and the phase modulation in the normal runtime and distribute the load reasonable to meet the specifications of lines and transformers. The application of FACTS elements and the development of the FACTS has given new solutions for AC system parameters, reactive power regulation and transmission capacity, which also leads to the traditional power flow calculation methods are no longer satisfied with the power grid with FACTS.

The paper made a simple definition and classification of Flexible AC Transmission System(FACTS), and introduced several mainstream FACTS devices’basic working principles and their corresponding mathematical models, then did the basic expression of power flow calculation concepts and the requirements. In several commonly used algorithms, with better convergence ,the Newton-Raphson algorithm is studied .On the base of established mathematical model of FACTS devices, the traditional power flow calculation with Newton-Raphson method has been modified so that it can be used solve containing FACTS grid power flow calculation. Finally, a 9-node system with STATCOM was simulated using Matlab software, in order to verify the reliability and the convergence of the algorithm .

Keywords  Flow calculation  FACTS  STATCOM  Newton-Raphson  Matlab

目   次

1   绪论1

1.1 课题背景和意义 1

1.2 国内外现状   1

1.3 论文的主要工作 3

2   潮流计算  4

2.1  概述4

2.2  潮流计算问题的数学模型  4

2.2.1 潮流计算问题的节点类型4

2.2.2 节点功率方程5

2.3   潮流计算的牛顿法 6

2.3.1牛顿法的基本原理 6

2.3.2 潮流计算的牛顿法求解过程9

2.3.3 牛顿法的计算流程框图 11

   2.4 本章小结12

3    含FACTS元件的潮流计算13

3.1  FACTS装置的概述13

3.2  含STATCOM的潮流计算  13

3.3  含SSSC的潮流计算 16

3.4  含TCSC的潮流计算 20

3.5  本章小结 22

4  算法编程及算例分析23

 4.1含STATCOM的算法设计 23