基于MATLAB软件的P-Q分解法潮流计算_精品.doc

基于MATLAB软件的P-Q分解法潮流计算 摘要 电力系统潮流计算是研究电力系统稳态运行情况的一种重要的分析计算，它根据给定的运行条件及系统接线情况确定整个电力系统各部分的运行状态：各母线的电压，各元件中流过的功率，系统的功率损耗。在电力系统规划的设计和现有电力系统运行方式的研究中，都需要利用潮流计算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。所以，电力系统潮流计算是进行电力系统故障计算，继电保护整定，安全分析的必要工具。随着电力系统网络的急剧扩大和不断复杂，运用手算进行潮流计算已经不现实但是伴随着计算机技术的飞速发展，基于计算机的潮流计算也就应运而生了。这样，通过潮流计算，实现对系统的分析成为可能。 本文结合潮流计算的三个基本要求，紧跟该领域的发展，介绍了基于MATLAB软件P-Q分解法潮流计算的程序，用于粗略的计算中小型电力网络的潮流，实现对其的分析。本文所设计的程序，在计算中，所用的算法通俗易懂并对以往的主流算法做了一些改进，提高了计算速度。同时，该程序采用了GUI人机对话，将Excel表格、TXT文档与MATLAB程序紧密联系起来，使输入输出界面更加人性化。 关键词：电力系统潮流计算P-Q分解法；MATLAB软件 Power flow calculation is one of the important calculations which are to study the operation of power system steady state analysis. It is based on the given operating conditions and system wiring to identify the various parts of the power system operating state: the buses voltage, the stream components power, system power loss. both power system planning design and operation of existing power system mode of study are need to use the power flow calculation to quantitatively compare the program or run mode power supply reasonable, reliability and economy. Therefore, the power flow calculation is an essential tool for a calculation of power system faults, protection setting, security analysis. with the rapid expansion of power system network and continuing to be more complex, using hand calculation for flow calculation has been unrealistic. But ,with the celerity development in computer technology, computer-based power flow calculation has also emerged. In this way, It is possible to analysis power system through the power flow calculation. Based on the three basic requirements of power flow calculation and followed by the development of the field, This paper introduces the PQ mode power flow calculation procedure based on MATLAB software .It is used for a rough calculation of the small and medium power network to achieve its analysis. The algorithm used in the procedure mentioned in this paper is more easy to understand and made some improvements to