基于MATLAB的电力系统潮流计算-毕业论文

安徽工程大学机电学院毕业设计（论文）-I-摘要潮流计算是电力系统的一项重要分析功能，是进行故障计算，继电保护整定，安全分析的必要工具。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。电力系统潮流计算的结果是电力系统稳定计算和故障分析的基础。潮流计算是电力系统的各种计算的基础，同时它又是研究电力系统的一项重要分析功能，在电力系统规划设计和现有电力系统运行方式的研究中，都需要利用电力系统潮流计算来定量的比较供电方案和现有电力系统运行方式的合理性，可靠性和经济性。实际电力系统的潮流技术那主要采用牛顿-拉夫逊法。传统的潮流计算程序缺乏图形用户界面，结果显示不直观，难于与其他分析功能集成。网络原始数据输入工作量大且易于出错。随着计算机技术的飞速发展，MICROSOFTWINDOWS操作系统早已被大家所熟悉，其友好的图形用户界面已成为PC机的标准，而DOS操作系统下的应用程序因其界面不够友好，开发具有WINDOWS风格界面的电力系统分析软件已成为当前的主流趋势。另外，传统的程序设计方法是结构化程序设计方法，该方法基于功能分解，把整个软件工程看作是一个个对象的组合，由于对某个特定问题域来说，该对象组成基本不变，因此，这种基于对象分解方法设计的软件结构上比较稳定，易于维护和扩充。本文介绍了图形化潮流计算软件的开发设计思想和总体结构，阐述了该软件所具备的功能和特点。结合电力系统的特点，软件采用MATLAB语言运行于WINDOWS操作系统的图形化潮流计算软件。本系统的主要特点是操作简单，图形界面直观，运行稳定。计算准确。计算中，算法做了一些改进，提高了计算速度，各个类的有效封装又使程序具有很好的模块性。可维护性和可重用性。关键词：电力系统潮流计算；牛顿—拉夫逊法潮流计算；MATLAB孔恩来：基于MATLAB的电力系统潮流计算-II-AbstractPowerflowcalculationisanimportantfunctionoftheelectricpowersystemisanalyzed,faultcalculation,relayprotection,safetyanalysistoolsnecessary.Isthecalculationofthesteadystateoperationofnormalandfaultconditionsofcomplexpowersystemunderthe.Theresultsofpowerflowcalculationisthebasisofcomputationandfaultanalysisofpowersystemstability.Powerflowcalculationisthebasisofallkindsofpowersystemcalculation,anditisalsoanimportantfunctionofpowersystemanalysis,theresearchontheoperatingmodeofpowersystemplanninganddesignoftheexistingpowersystem,needtousepowerflowcalculationtoquantitativecomparisonoftherationalityofpowersupplyschemeandoperationmodeoftheexistingpowersystem,reliabilityandeconomy.TheactualpowerflowtechnologythatmainlyusestheNewton-Raphsonmethod.Thetraditionalflowcalculationprogramlacksagraphicaluserinterface,thedisplayisnotintuitive,itisdifficulttointegratewithotheranalysisfunction.Thenetworkinputdataandheavyworkloadanderrorprone.Withtherapiddevelopmentofcomputertechnology,Microsoftwindowsoperatingsystemhaslongbeenfamiliar,itsfriendlygraphicaluserinterfacehasbecomePCstandard,andtheapplicationoftheDOSoperatingsystembecauseofitsinterfaceisnotfriendlyenough,thepowersystemanalysissoftwaredevelopmentwithwindowsstyleinterfacehasbecomethemaintrend.Inaddition,thetraditionaldesignmethodisastructuredprogramdesignmethod,thismethodisbasedonthefunctiondecomposition,thesoftwareengineeringasacombinationofobjects,duetoaparticularproblemdomain,thecompositionoftheobjectisessentiallythesame,therefore,basedonthesoftwarestructureoftheobjectdecompositionmethodonthedesignofstable,easytomaintainandexpansion.Thedevelopmentofdesignideaandoverallstructureofthispaperintroducesthegraphicalpowerflowcalculationsoftware,expoundsthefunctionandfeaturesofthesoftware.Accordingtothecharacteristicsofthepowersystem,thegraphicaltrendMATLABlanguageoperatingsystemrunningonawindowscalculationsoftware.Themainfeatureofthissystemissimple,intuitivegraphicalinterface,accuratecalculationofstableoperation.Inthecalculation,thealgorithmmadesomeimprovements,improvethecalculationspeed,andtheeffectiveencapsulationofclassprogrammodulehasgoodmaintainabilityandreusability.Keywords:powerflowcalculation;NewtonRaphsonpowerflowcalculation;MATLAB安徽工程大学机电学院毕业设计（论文）-III-目录引言............................................................................................................................................1第1章电力系统潮流计算概述..............................................................................................21.1电力系统叙述..................................................................................................................21.2潮流计算简介..................................................................................................................21.3潮流计算的意义及其发展..............................................................................................3第2章潮流计算的数学模型..................................................................................................42.1导纳矩阵的原理及计算方法......................................................................................................42.2潮流计算的基本方程......................................................................................................72.3电力系统节点分类..........................................................................................................92.4潮流计算的约束条件....................................................................................................10第3章牛顿－拉夫逊法概述................................................................................................123.1牛顿－拉夫逊法基本原理............................................................................................123.2牛顿--拉夫逊法潮流求解过程.....................................................................................133.3牛顿—拉夫逊法的程序框图........................................................................................17第4章MATLAB概述..........................................................................................................184.1MATLAB简介...............................................................................................................184.2MATLAB应用在潮流计算中的优势...........................................................................184.3矩阵的运算.......................