基于符号运算的电力系统潮流计算方法

Abstract
Power flow calculation is basic for power system analysis. It determines the voltage and power transmission in the steady state, the result can be used to obtain the initial state for stability analysis. The Newton-Ralphson method is widely used due to better convergence and less iterations. Based on the analysis of the principle of the NR method, a power flow program is presented using the symbol operation function of Matlab. The program is debugged and tested on IEEE 14 node system.
The program and the result show that, the symbol operation function can make it easy to obtain the Jaccobian Matrix and make the program more concise. The work can promote the efficiency in power flow calculation.
Keywords  Power flow calculation;  MATLAB;  Newton-Raphson method
1 绪论2
1.1 潮流计算 .2
1.2 潮流计算方法 .2
1.3 Matlab符号运算 3
1.4 本文的工作 .3
2 牛顿-拉夫逊法潮流计算原理与步骤 4 源`自<六:维;论-文>网/www.lwfree.cn
2.1 牛顿-拉夫逊法的基本原理 .4
2.2 牛顿-拉夫逊法潮流计算 .8
2.2.1 节点导纳矩阵的形成与修改      .8
2.2.2 功率方程和节点分类      10
2.2.3 潮流计算的约束条件      11
2.2.3 功率平衡方程及其求解      12
2.3.牛顿-拉夫逊法潮流计算程序框图      14
3 基于符号运算的潮流算法 15
3.1 符号定义 .16
3.2 符号运算与数值运算结合 .16
3.3编写算法 17
3.4 在IEEE14节点系统潮流分布 .26

1 绪论
1.1 潮流计算

1.2 潮流计算方法

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