基于MATLAB的PQ分解法电力系统潮流计算毕业设计.pdf

基于 P-Q 分解法的电力系统潮流计算 摘 要 电力系统潮流计算是研究电力系统稳定运行情况的一种重要的计算，在电力 系统规划设计和现有电力系统运行方式的研究中，都需要利用它来定量地分析比 较供电方案或运行方式的合理性、可靠性和经济性。 本文主要介绍了电力系统潮流计算的基本原理（包括电力网络的数学模型和 潮流计算的数学模型）及潮流计算常用的几种方法，着重介绍了 P-Q 分解法。 P-Q 分解法是潮流计算的常用方法之一，派生于用极坐标表示的牛顿 -拉夫逊法，是牛 顿-拉夫逊法的一种简化计算方法，可以提高运算的速度。其中比较详细地讲述了 P-Q 分解法的形成过程及计算流程，而且结合一个具有代表性的算例，用 P-Q 分 解法进行潮流计算，其计算过程是通过 MATLAB 软件实现的，并对计算结果进行 了简要的分析。 关键词 ： 电力系统潮流计算， P-Q 分解法， MATLAB 软件 Based on P - Q Decomposition Method of The Power System Flow Calculation ABSTRACT Power System Flow Calculation is an important analysis and calculation of power system steady-state operation,. In the study of power system design and the current operation mode are required Power Flow Calculation to quantitatively analyzed and compared to the program or run mode power supply reasonable, reliability and economy or not. This article mainly introduced the basic principles of Power System Flow Calculation (including the mathematical model of electric power network and the mathematical model of power flow calculation) and the main methods of power flow calculation, introduces the P - Q Decomposition Method. P - Q Decomposition Method is one of the commonly used method to compute the tidal current, derived from Newton - Ralph expressedin polar coordinate method, Newton - Ralph Method, a simplified calculation method can improve the speed of operation. One more detail tells the story of the formation process of P - Q Decomposition Method and calculation process, and combined with a typical example, using P - Q Decomposition Method for power flow calculation, the calculation process is implemented by MATLAB software, and the