文档介绍：配电网潮流计算基于前推回代法的配电网潮流计算
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哈尔滨理工大学毕业设计(论文)任务书
基于前推回带法的配电网潮流计算的研究
摘要
电力系统的潮流计算在电力系统稳态分析和电力系统设计中有很重要的作用,潮流计算也是电力系统暂态分析的基础。潮流计算是根据给定的系统运行条件来计算系统各个部分的运行状况,主要包括电压和功率的计算。
配电网潮流计算是配电管理系统高级应用软件功能组成之一。本课题在分析配电网元件模型的基础上,建立了配电网潮流计算的数学模型。由于配电网的结构和参数与输电网有很大的区别,因此配电网的潮流计算必须采用相适应的算法。配电网的结构特点呈辐射状,在正常运行时是开环的;配电网的另一个特点是配电线路的总长度较输电线路要长且分支比较多,配电线路的线径比输电网细导致配电网的R/X较大,且线路的充电电容可以忽略。配电网的潮流计算采用的方法是前推回代法,文中对前推回代法的基本原理、收敛性及计算速度等进行了理论分析比较。经过C语言编程,运行算例表明,前推回代法具有编程简单、计算速度快、收敛性好的特点,此方法是配电网潮流计算的有效算法,具有很强的实用性。
关键词:电力系统;配电网;潮流计算;前推回代法
Study on work power flow
calculation
Abstract
Power flow calculation has a very important role in power system steady-state analysis and power system design, and it is also the basis of transient analysis in power system. Flow calculation is based on given conditions of the power system and calculates the operational status of every part of the system, including voltage and power.
With the development and application of the power electronics installations, the pollution of the harmonics es more and more serious in work. The reactive source is used widely in many fields. Many kinds of methods based on the active filter to restrain the harmonics and pensate the reactive power are taken into this field. And the detection of harmonics and reactive current is very crucial to harmonic restraint and pensation.