电网规划毕业论文

电网110kV变电站优化规划摘要：城市电网规划是电力系统规划和城市规划的重要组成部分，科学合理地进行城市电网规划是实现未来城市电网经济性和安全性的先决条件，可以给国家建设和城市发展带来巨大的经济和社会效益。变电站的规划是城市电网规划工作中的重要环节，变电站的位置直接影响着整个系统的网络结构、供电质量和经济运行性，变电站的容量直接影响着供电的可靠性，因此，做好城市配网变电站的规划工作对电力企业和用户都有重要的意义。首先利用贪心算法快速求解新建变电站的座数及各变电站的容量，利用Hopfield神经网络校核新建变电站的位置和各变电站的供电范围，后确定各变电站的真实容量。在求解过程中，该方法考虑了已有变电站的改造问题。从全局最优的原则出发，可求得具有实际价值的最优或近似最优解。关键词:城市电网规划；配电系统；变电站；神经网络西安石油大学本科毕业设计（论文）The110kVDistributionSubstationPlanninginPuyangCityAbstract:Citypowerdistributionplanningisthemainpartofpowersystemplanningandcityplanning,sodoingitreasonablyistheprerequisiteconditionofrealizingtheeconomicandsocialbenefittocountryconstructionandcitydevelopment.Thesubstationplanningisveryimportantinthecitypowernetworkplanning.Thesubstationpositionisaffectingthenetworkconstruction,thepowersupplyqualityandtheefficiencyofthepowersystemdirectly.Thesubstationcapacityisaffectingthepowersupplyreliabilitydirectly.Tomakeagoodsubstaionplanforthecitypowernetworkhasimportantmeaningtotheelectricpowerbusinessenterpriseandcustomers.Thealgorithmusesthegreedyalgorithmtoworkoutthenumberofnewsubstationsandthecapacityofeachsubstation(includingtheexistingsubstation),thentheHopfieldneuralisusedtodeterminethepositionofnewsubstationsandtheserviceregionofeachsubstation,finally,accordingtotheserviceregionofeachsubstation,therealcapacityofeachsubstationisdecidedwhiletherenovationoftheexistentsubstationisconsidered.Startfromtheprincipleofglobaloptimizationtheoptimumsolutionorapproximateoptimumsolutioncanbeobtained.Usingthisalgorithmthedataneednotnormalizeintheworking-outoftheserviceregionsofthesubstations.Keywords:CityPowerNetworkPlanning；Distributionsystem；Distributionsubstation；Neuralnetwork西安石油大学本科毕业设计（论文）I目录1绪论.........................................................................................................................11.1城市电网规划综述......................................................................................11.1.1城市电网规划的目的和意义.........................................................11.1.2城市电网规划的主要内容...............................................................11.1.3城市电网规划的基本原则...............................................................21.2变电站规划综述..........................................................................................21.2.1变电站规划的内容及意义...............................................................21.2.2变电站选址的基本原则...................................................................21.3地理信息系统综述......................................................................................21.3.1概念...................................................................................................21.3.2地理信息系统的构成.......................................................................31.3.3地理信息系统的功能.......................................................................31.4国内外研究现状..........................................................................................41.5本文主要研究内容......................................................................................52濮阳电网现状.........................................................................................................62.1濮阳市概况..................................................................................................62.1.1濮阳市自然地理概况..........................................................................62.1.2濮阳市经济发展概况.......................................................................72.2电网现状......................................................................................................73城市电网规划的主要技术原则.............................................................................83.1供电可靠性..................................................................................................83.2变压器负荷率取值......................................................................................83.3容载比..........................................................................................................83.4变电站费用..................................................................................................93.5变电站选址................................................................................................104数学模型...............................................................................................................114.1数学模型的建立........................................................................................114.2用贪心算法求初始可行解........................................................................124.3定站址、定供电范围的神经网络法........................................................134.4求解方法....................................................................................................164.5算例............................................................................................................175基于GIS的城市电网规划系统的开发...............................................................205.1开发工具的选择........................................................................................20西安石油大学本科毕业设计（论文）II5.2GIS数据库的建立........................................................................