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I10KV变电所及低压配电系统的设计摘要：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等内容。关键词：变电所；负荷；输电系统；配电系统IITheDesignOf10KVSubstationAndPowerDistributionSystemAbstract：Thesubstationisanimportancepartoftheelectricpowersystem,itisconsistedoftheelectricappliancesequipmentsandtheTransmissionandtheDistribution.Itobtainstheelectricpowerfromtheelectricpowersystem,throughitsfunctionoftransformationandassign,transportandsafety.Thentransportthepowertoeveryplacewithsafe,dependable,andeconomical.Theregionoffactoryeffectmanyfieldsandshouldconsidermanyproblems.Analysechangetogiveorgetanelectricshockamissionforcarryingandcustomerscarriesetc.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；powerdistributionsystemIII目录第1章绪论.......................................................................................................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...........................................................................................2第2章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负荷统计全厂的用电设备统计如下表...........................................32.1.2负荷计算...........................................................................................32.2无功补偿的目的和方案...........................................................................52.3无功补偿的计算及设备选择...................................................................6第3章变电所变压器台数和容量的选择.......................................................73.1变压器的选择原则...................................................................................73.2变压器类型的选择...................................................................................83.3变压器台数的选择...................................................................................83.4变压器容量的选择...................................................................................9第4章主接线方案的确定.............................................................................114.1主接线的基本要求.................................................................................114.1.1安全性.............................................................................................114.1.2可靠性.............................................................................................114.1.3灵活性.............................................................................................114.1.4经济性.............................................................................................114.2主接线的方案与分析.............................................................................114.3电气主接线的确定.................................................................................13第5章短路电流的计算.................................................................................145.1短路电流及其计算.................................................................................145.2三相短路电流的计算.............................................................................14第6章变电所高压进线、一次设备和低压出线的选择.............................186.1用电单位总计算负荷.............................................................................186.2高压进线的选择与校验.........................................................................186.2.1架空线的选择.................................................................................186.2.2电缆进线的选择.............................................................................186.3变电所一次设备的选择.........................................................................196.3.1高压断路器的选择.........................................................................196.3.2高压隔离开关的选择...............................