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1、摘要变电站是汇集电源、升降电压和分配电能的场所,是发电厂和用户联系的中间环节。变电站按照其升降电压的不同分为升压变电站和降压变电站两大类。升压变电站是为了减少电能在运输过程中的损耗,将发电厂发出的电升压后输送到远方,这种变电站通常与发电厂联系在一起;降压变电站与负荷中心比较靠近,将高压电通过变压器转变为适合的低压电。在这里我们设计的是110KV的变电站。通常变电站是由高压配电室、变压器室和低压配电室等组成的。本次设计以110KV站为主要设计对象,分为任务书、计算说明书二部分,同时附有1张电气主接线图加以说明。该变电
2、站设有2台主变压器,站内主接线分为110KV、35KV和10KV三个电压等级。三个电压等级均单母分段的接线方式。在本变电站的设计中,包括对变电站总体分析和负荷分析、变电站主变压器的选择、主接线、短路电流计算等部分的分析计算以及防雷设计。在保证供电可靠性的前提下,减少事故的发生,降低运行费用。变电站的设计是按照本企业几年后的用电量的满负荷的容量设计的,不必为将来因为容量小而再重建或扩容,一次设计到位,减少了投资,并为变电站的安全稳定供电提供了保障。关键词:110KV变电站,短路电流,高压电气设备,防雷保护。ABSTR
3、ACTPowersubstationispooled,andlandingvoltageelectricitydistributionsites,powerplantsanduserslinkedtotheintermediatelinks.SubstationinaccordancewithitsmovementsintodifferentvoltagesubstationandBoostSubstationtwocategories.Boostsubstationistoreducethepowerinthet
4、ransportprocessofloss,powerplantswillboosttheelectricitytransmittedtotheremotepost,Thissubstationisusuallylinkedwiththepower;Substationwithaloadcenternear,throughhigh-voltagetransformerwillbeamenabletochangesinalow-voltageelectricity.Herewedesigna110kVsubstati
5、on.Substationisusuallyfromhigh-voltagepowerdistributionroom,transformersandlow-voltagepowerdistributionroomcomposedoftheroom.Thisdesignisthen110kVtransformersubstationsisforprimarilydesigntheobjecting,andisdividedintothemissionbook,calculationbook,twoparts,att
6、hesametimefish-eye1electricitythelordconnectthelinediagramtotakeintotheelucidation.Thattransformersubstationestablishestohave2maintransformerofsets,standtheinsidelordtoconnectthelinetoisdividedinto110kV,35kV,with10kVthreeelectricvoltagegradesofkV.Everyelectric
7、voltagegradedistinguishestheconnectingofsegmentthelinemethodwithsinglemother.Inthedesignofthesubstation,includingtherightsubstationoverallanalysisandloadanalysis,themaintransformersubstationchoice,MainConnection,shortcircuitcurrentcalculationaspartoftheanalysi
8、sandminedesign.Guaranteethereliabilityofelectricity,underthepremiseofreducingtheoccurrenceofaccidentsandreduceoperatingcosts.Substationdesignisinaccordancewiththeenterpriseafewyear