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1、35KV无人值班变电站的设计摘要：本次设计以35KV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。该变电站设有2台主变压器，站内主接线分为35kV、和10kV两个电压等级。两个电压等级均单母分段的接线方式。本次设计中进行了电气主接线图形式的论证、短路电流计算、主要电气设备选择及校验（包括断路器、隔离开关、电流互感器、电压互感器），同时介绍了防雷保护的配置、继电保护的规划等相关方面的知识。26ABSTRACTThisdesignisthen35kVtransformersubst
2、ationsisforprimarilydesigntheobjecting,andisdividedintothemissionbook,calculationbook,manualthreepart,atthesametimefish-eye1electricitythelordconnectthelinediagramtotakeintotheelucidation.Thattransformersubstationestablishestohave2maintransformerofsets,standt
3、heinsidelordtoconnectthelinetoisdividedinto35kV,with10twoelectricvoltagegradesofkVs.Theeachelectricvoltagegradedistinguishestheconnectingofsegmentthelinemethodwithsinglemother.Proceedsinthisdesigntheelectricitylordconnectthelinesketchthetype'sargument,short-c
4、ircuitelectriccurrentcalculation,mainelectricityequipments(includetobreaktheroad,insulatetheswitch,electriccurrentwitheachother,electricvoltagetowitheachother),andintroducedtodefendwhatthunderprotecttoinstallatthesametime,aftertheprogrammingetc.thattheelectri
5、cityprotectthepartiesconcerned'sknowledge.Thispaperisa35KVsubstationdesignbook,includingassignmentpaper,explanationpaper,calculationpaperand1graphs.Thesubstationhave2primarytransformerincluding2voltagedegree:35KVand10KV.Everydegreeadoptedsectionedsinglebuspri
6、maryconnectionmodeltosupplypower.Inthispaper,wehavecomputedshort-circuitcurrent,designedandtestedthePrimaryelectricequipment(circuitbreaker,isolationswitcher,currenttransfer,voltagetransfer,busetc),atthesametime,wealsointroducedprevent-thunderprotection,prima
7、ryprotectionandotherknowledgerelevant.26目录ABSTRACT21绪论41.1原始资料和问题的提出41.2国内外现状41.2.1国外无人值班变电站的发展41.2.1国内无人值班变电站的发展51.3本文的设计内容52无人值班变电站的基础知识62.1无人值班变电站的概念和功能62.1.1无人值班变电站的概念62.1.1无人值班变电站的功能63主接线的选择73.1常用的主接线方案介绍及其优缺点73.2本设计所选择的主接线方案及其选择理由83.3变压器的选型及台数94短路电流计算10
8、4.1短路计算的目的104.2变压器等值电抗计算104.3短路点的确定104.435kv母线上三相短路时114.510KV母线上短路计算114.6短路电流汇总表125高压电气设备的选型145.1高压电气设备选择一般规定145.1.1高压电气选择的一般原则145.1.2母线的选择145.1.3高压断路器的选择及隔离开关的选择155.1.4互感器的选择176高压配电装置226
