石嘴山煤矿采区供电系统设计

中国矿业大学银川学院2012届本科毕业设计（论文）题目石嘴山煤矿采区供电系统设计所在系机电动力与信息工程系专业班级工业工程2班姓名王升指导教师孟庆春教务处制石嘴山煤矿采区供电系统设计TheShizuishancoalminingpowersupplysystemdesign毕业设计（论文）共54页完成日期：2012年5月10日答辩日期：2012年5月18日I摘要采区变电所是采区供电的中心，它的主要任务是将井下中央变电所送来的高压电能变成低压电能，配送到采掘工作面及附近用电设备。采区变电所的基本组成：高压配电箱、矿用变压器、高低压隔爆馈电开关和移动变电站。本次设计是由中央变电所送来10kV高压，经过移动变电站向各用电设备供电。其设计过程主要包括采区变电所及采掘工作面位置的确定、负荷的统计、变压器型号、容量和台数的选择、高低压电缆的选择，短路电流的计算、隔爆型高低压配电装置选择，变电所的防雷保护与接地等。通过对10kV变电站做负荷统计，用需用系数法进行负荷计算，通过计算来设计整个采区的供电系统。关键词：供电系统；移动变电站；电缆；防雷保护IIAbstractMiningareasubstationofpowersupplyinminingareaisacenter,itisthemaintaskoftheundergroundcentralsubstationelectricenergyintolowvoltagefrompower,distributiontotheminingworkfaceandnearbyelectricalequipment.Insubstationofminingareaconsistsof:highvoltagedistributionbox,miningtransformers,highandlowvoltageflameprooffeedswitchandmobilesubstation.Thisdesigniscomposedofacentralsubstationsent10kVhigh,afterthemobilesubstationtotheelectricalequipmentpowersupply.Thedesignprocessmainlyincludesinsubstationofminingareaandminingworkfacelocation,loadstatistics,transformermodel,capacityandnumberselection,highandlowvoltagecableselection,short-circuitcurrentcalculation,flameproofhighvoltagedistributionequipmentselection,substationlightningprotectionandgrounding.Basedonthe10kVsubstationloadstatistics,withthecoefficientmethodforloadcalculation,calculationtodesignthewholeminingareapowersupplysystem.Keywords:powersystem；substation；cable；lightningprotection目录前言...........................................................................................................................11概述.......................................................................................................................21.1采区供电系统设计依据...................................................................................21.2采区供电系统设计要求...................................................................................21.3采区供电系统设计目的及范围.......................................................................32采区变电所配电点及位置的确定.......................................................................42.1采区变电所位置的确定...................................................................................42.2移动变电站位置的确定...................................................................................42.3工作面配电点位置的确定...............................................................................43采区供电系统负荷统计与移动变电站选择.......................................................53.1供电电压确定...................................................................................................53.2负荷统计...........................................................................................................53.3移动变电站选择...............................................................................................64采区供电系统的拟定.........................................................................................114.1供电系统的拟定原则.....................................................................................114.2供电系统的确定.............................................................................................115采区高低压电缆选择.........................................................................................125.1高压电缆的选择.............................................................................................125.2低压电缆选择.................................................................................................166短路电流的计算.................................................................................................336.1计算短路电流的目的.....................................................................................336.2短路电流的计算.............................................................................................337隔爆型高低压配电装置选择.............................................................................427.1高压配电装置的选择.....................................................................................427.2隔爆型低压配电装置选择.............................................................................438防雷与接地.........................................................................................................458.1概述.................................................................................................................458.2防雷保护.........................................................................................................459采区变电所的防火措施.....................................................................................4910照明系统设计...................................................................................................5010.1概述...............................................................................................................5010.2井下照明系统...............................................................................................5010.3井下照明系统的设计要求...........................................................................5011设计总结...........................................................................................................51致谢语........................................................