电力系统继保护课程设计1.docVIP

内蒙古科技大学 本科生课程设计说明书 题 目：基于MATLAB的电力系统 复杂潮流分析 学生姓名：王艳超 学 号：0867112105 专 业：电气工程及其自动化 班 级：电气2008—2班 指导教师：张继红 基于MATLAB的电力系统复杂潮流分析 摘 要 电力系统潮流计算是电网分析的基础应用，是对复杂电力系统正常和故障条件下稳态运行状态的计算。给定电力系统的网络结构、参数和决定电力系统运行状况的边界条件，，确定电力系统运行的方法之一是朝流计算。 PQ分解法是极坐标形式牛顿-拉潮流计算的一种简化计算方法，。P—Q分解法通过对电力系统具体特点的分析，对牛顿法修正方程式的雅可比矩阵进行了有效的简化和改进。由于这些简化只涉及修正方程式的系数矩阵，并未改变节点功率平衡方程和收敛判据，因不会降低计算结果的精度。 MATLAB是一种交互式、面向对象的程序设计语言，广泛应用于工业界与学术界，主要用于矩阵运算．采用迭代法，通过建立矩阵的修正方程来依次迭代，逐步逼近真值来计算出电力网的电压，功率分布。 用手算和计算机算法对其进行设计。使用MATLAB软件进行编程，在很大程度上节省了内存，减少了计算量。通过对本题计算我们了解了一些工程计算和解决工程问题的方法。 关键词：潮流计算，PQ分解法，MATLAB Based on MATLAB electrical power system complex tidal current analysis Abstract Power Flow Analysis Grid computing is the basis of applications, the complex power system under normal and fault conditions for the calculation of steady state operation. Given the power system network structure, parameters and decisions operation of the power system boundary conditions, to determine the method of operation of the power system is one of North Korea flow calculation. PQ decomposition method is the form of polar coordinates Newton - the widening trend of a simplified calculation method. P-Q decomposition method adopted by the specific characteristics of the power system analysis, Newton’s Law of the Jacobian matrix formula has effectively simplified and improved. As a result of these simplified formula that involves only the coefficient matrix, the balance of power has not changed node equations and the convergence criterion, because the results will not reduce the accuracy. MATLAB is an interactive, object-oriented programming language, widely used in industry and academia, mainly for matrix calculation. Using iteration, the amendment through the establishment of matrix iterative equation to turn, gradually moving towards a true value to calculate the voltage electricity grid, power distribution. Use MATLAB software programming, saving memory to a large extent, reduce the amount of com