太原理工大学毕业设计(论文)任务书第1页第2页第3页基于PSCAD/EMTDC的配电网稳态潮流分析与仿真摘要在电力系统的正常运行中,随着用电负荷的变化和系统运行方式的改变,网络中的损耗也将发生变化。
要严格保证所有的用户在任何时刻都有额定的电压是不可能的,因此系统运行中个节点出现电压的偏移是不可避免的。
为了保证电力系统的稳定运行,要进行潮流调节。
潮流计算是实现电力系统安全经济发供电的必要手段和重要工作环节,因此潮流计算在电力系统的规划设计、生产运行、调度管理及科学研究中都有着广泛的应用。
随着电力系统及在线应用的发展,计算机网络已经基本完善,为电力系统的潮流计算提供了物质基础。
电力系统潮流计算是电力系统分析计算中最基本的内容,也是电力系统运行及设计中必不可少的工具。
EMTDC/PSCAD仿真作为一种高效的电力系统仿真分析软件,可以较为简单地模拟复杂电力系统, 包括直流输电系统和其相关的控制系统。
可利用该仿真软件对电力电子电路进行仿真,本文以电力系统分析为基础以电力系统配电网电路为例对其进行仿真分析,从而进一步熟悉配电网潮流计算的基本知识。
关键词:潮流计算, EMTDC/PSCAD仿真, 电力系统Analysis and Simulation of the steady state power flow in distribution network based on PSCAD/EMTDCAbstractIn the normal operation of the power system, with the change of the mode of operation and system load changes, loss in the network will also change. To ensure strict voltage are rated all users at any time is impossible, so the system is running in a node voltage offset is inevitable. In order to ensure the stable operation of power system, for power flow regulation. Power flow calculation is the realization of power system security and economy of power supply of the necessary and important work segment, so the load flow calculation in power system planning and design, operation, management and scientific research have a wide range of applications.With the development of power system and online application, the computer network has been basically perfect, provides the material basis for the power system load flow calculation. Power flow calculation is the basic content of power system analysis, design and operation of power system is an essential tool. EMTDC/PSCAD simulation for power system simulation is an efficient analysis software, can be a relatively simple simulation of complex power system, including the DC transmission system and its related control system. For simulation of power electronic circuit by using the simulation software, based on the analysis of power system based on the circuit of power system distribution network as an example simulation analysis on the basic knowledge, thus further familiar with the distribution network power flow calculation.Keywords: power flow calculation, EMTDC/PSCAD simulation, power system目录摘要 (I)Abstract ........................................................................................................................... 错误!未定义书签。
第一章绪论.. (1)1.1 课题背景 (1)1.2 潮流计算的意义及发展趋势 (1)1.3 本文的主要研究内容.................................................................................... 错误!未定义书签。
第二章电力系统潮流计算的基本原理....................................................................... 错误!未定义书签。
2.1 配电网的数学模型........................................................................................ 错误!未定义书签。
2.1.1 电力网络的基本方程式..................................................................... 错误!未定义书签。
2.1.2 自导纳和互导纳的确定方法............................................................. 错误!未定义书签。
2.1.3 节点导纳矩阵的性质及意义............................................................. 错误!未定义书签。
2.1.4 等值电路............................................................................................. 错误!未定义书签。
2.2 潮流计算的数学模型.................................................................................... 错误!未定义书签。
2.2.1 潮流计算的节点类型......................................................................... 错误!未定义书签。
2.2.2 潮流计算的基本方程......................................................................... 错误!未定义书签。
2.3 潮流计算的约束条件.................................................................................... 错误!未定义书签。
2.4 潮流计算方法.................................................................................................. 错误!未定义书签。
2.4.1 牛顿拉夫逊算法................................................................................. 错误!未定义书签。
2.4.2 P-Q分解法 ......................................................................................... 错误!未定义书签。
2.4.2 前推回代法......................................................................................... 错误!未定义书签。
2.4.3 算法比较............................................................................................. 错误!未定义书签。
2.5 PSCAD简介.................................................................................................. 错误!未定义书签。
2.5.1 PSCAD概述....................................................................................... 错误!未定义书签。
2.5.2 PSCAD的基本操作........................................................................... 错误!未定义书签。
第三章前推回代法潮流计算理论分析..................................................................... 错误!未定义书签。