10KV变电所及其配电系统的设计

成都理工大学工程技术学院毕业论文10KV变电所及其配电系统的设计作者姓名：裴勉专业名称：电气工程及其自动化指导老师：孙莉莉讲师10KV变电所及其配电系统的设计-I-摘要变电所是电力系统的一个重要组成部分，由电器设备及配电网络按一定的接线方式所构成，他从电力系统取得电能，通过其变换、分配、输送与保护等功能，然后将电能安全、可靠、经济的输送到每一个用电设备的转设场所。变电所涉及方面很多，需要考虑的问题多，分析变电所担负的任务及用户负荷等情况，选择所址，利用用户数据进行负荷计算，确定用户无功功率补偿装置。同时进行各种变压器的选择，从而确定变电站的接线方式，再进行短路电流计算，选择送配电网络及导线，进行短路电流计算。选择变电所高低压电气设备，为变电所平面及剖面图提供依据。本变电所的初步设计包括了：（1）总体方案的确定（2）负荷分析（3）短路电流的计算（4）配电系统设计与系统接线方案选择（5）继电保护的选择与整定（6）防雷与接地保护等内容。关键词：变电所负荷输电系统配电系统10KV变电所及其配电系统的设计-II-AbstractThesubstationisanimportancepartoftheelectricpowersystem,itisconsistedoftheelectricappliancesequipmentsandtheTransmissionandtheDistribution.Itobtainstheelectricpowerfromtheelectricpowersystem,throughitsfunctionoftransformationandassign,transportandsafety.Thentransportthepowertoeveryplacewithsafe,dependable,andeconomical.Theregionoffactoryeffectmanyfieldsandshouldconsidermanyproblems.Analyzechangetogiveorgetanelectricshockamissionforcarryingandcustomerscarriesetc.circumstance,makegooduseofcustomerdataproceedthencarrycalculation,ascertainthecorrectequipmentofthecustomer.Atthesametimefollowingthechoiceofeverykindoftransformer,thenmakesurethelinemethodofthetransformersubstation,thencalculatetheshort-circuitelectriccurrent,choosingtosendtogetherwiththeelectricwiremethodandthestyleofthewire,thenproceedingthecalculationofshort-circuitelectriccurrent.Thisfirststepofdesignincluded:(1)ascertainthetotalproject(2)loadanalysis(3)thecalculationoftheshort-circuitelectriccurrent(4)thedesignofanelectricshockthesystemdesigntoconnectwithsystemandthechoiceoflineproject(5)thechoiceandthesettleoftheprotectivefacility(6)thecontentstodefendthethunderandprotectionofconnecttheearth.Keywords:substation,load,transmissionsystem,powerdistributionsystem10KV变电所及其配电系统的设计-III-目录摘要................................................................................................................IAbstract.........................................................................................................II目录..............................................................................................................III1绪论............................................................................................................11.1工厂变配电所的设计......................................................................11.1.1用户供电系统...........................................................................11.1.2工厂变配电所的设计原则.......................................................11.2课题来源及设计背景......................................................................21.2.1课题来源...................................................................................21.2.2设计背景...................................................................................22变电所负荷计算和无功补偿的计算........................................................32.1变电站的负荷计算..........................................................................32.1.1负荷统计...................................................................................32.1.2负荷计算...................................................................................32.2无功补偿的目的和方案..................................................................62.3无功补偿的计算及设备选择..........................................................63变电所变压器台数和容量的选择............................................................93.1变压器的选择原则..........................................................................93.2变压器类型的选择..........................................................................93.3变压器台数的选择........................................................................103.4变压器容量的选择........................................................................104电气主接线方案的确定..........................................................................124.1电气主接线的基本要求................................................................124.1.1安全性.....................................................................................124.1.2可靠性.....................................................................................124.1.3灵活性.....................................................................................124.1.4经济性.....................................................................................124.2电气主接线的方案与分析............................................................134.3电气主接线的确定........................................................................1410KV变电所及其配电系统的设计-IV-5短路电流的计算......................................................................................155.1短路电流及其计算........................................................................155.2高压电网三相短路计算................................................................155.3低压电网三相短路计算................................................................186变电所高压进线、一次设备和低压出线的选择..................................226.1用电单位总计算负荷....................................................................226.2高压进线的选择与校验................................................................226.2.1架空线的选择.........................................................................226.2.2电缆进线的选择...