大金坪水电站电气部分设计

XX大学毕业设计（论文）题目：大金坪水电站电气部分设计学院：电子信息学院专业班级：电气工程及其自动化20XX级XX班指导教师：XX职称：副教授学生姓名：XX学号：4090304XXXXXX大学本科毕业设计（论文）I摘要我国的水能资源居世界第一，通过水电厂将水能转化为电能，必将为国民经济的发展提供强大动力，因此水电厂电气部分的设计工作显得非常重要，只有设计出合理的方案才能使电站综合效益最大化。通过对大金坪水电厂原始资料的分析，并结合实际情况确定本站电气主接线采用扩大单元接线。利用水轮发电机短路电流运算曲线计算短路电流；依据电气设备手册选择变压器、母线、断路器、隔离开关等电气设备，同时对所选设备进行必要的校验；绘制出相应的电气主接线图和厂用电接线图；对发电机、变压器、线路等设备做了继电保护介绍以及对全厂防雷保护和接地进行设计，最后对电厂进行了自动化设计。关键词：电气主接线，短路电流，电气设备选择与校验，保护，自动化。XX大学本科毕业设计（论文）IIABSTRACTTheamountofwaterresourcesinourcountryisthebiggestoneintheworld.Itwillbeastrongdrivingforceforthedevelopmentofthenationaleconomythatturnsthewaterintoelectricalenergythroughhydropowerstation.Sothedesignworkofpartofthehydropowerplantelectricalisveryimportantandonlythereasonablesolutionisnecessarytomaximizecomprehensivebenefitsforthepowerstation.ItisdeterminingthatthemainelectricalwiringUSEStheexpandedunitconnectionthroughtheanalysisofrawdataofDaJinPinghydropowerstationandtheconnectingwiththeactualsituation.Hydro-generatorcurveofshortcircuitcurrentcalculationisusedtocalculateshortcircuitcurrent;Basedonelectricalequipmentmanualselectingtransformer,bus,circuitbreakers,isolatingswitchesandotherelectricalequipment,anditisnecessarytochecktheselectedequipmentcalibration;andthenmapoutthecorrespondingelectricmainwiringdiagramandauxiliarypowerwiringdiagram;Forgenerators,transformers,linesandotherequipment,therelayprotectionisintroducedaswellastodesignthecorrespondinglightningprotectionandgroundingdesign.Finally,thepowerplantautomationdesigniscarriedout.Keywords:mainelectricalconnection,short-circuitcurrent,electricalequipmentselectionandcalibration,protection,automation.XX大学本科毕业设计（论文）目录第1章绪论.............................................................11.1水电站概述........................................................11.1.1水电厂的分类.................................................11.1.2水电厂的特点.................................................21.2大金坪水电站概况..................................................21.2.1厂址概况.....................................................21.2.2电站的性质...................................................21.2.3电站的建设规模...............................................21.2．4发电机介绍..................................................21.3主变压器的选择....................................................31.3.1主变压器选择.................................................3第2章电气主接线设计....................................................52.1水电站电气部分研究的背景..........................................52.2电站电气主接线的论证意义..........................................52.3分析原始资料......................................................62.4主接线方案的拟定与选择............................................62.5电气主接线设计基本要求............................................62.6发电机与变压器组合方式............................................72.6.1可选接线方案.................................................72.6.2方案比较.....................................................82.6.3方案选择.....................................................82.7220KV侧接线......................................................92.7.1方案选择.....................................................92.7.2方案比较.....................................................92.8厂用电设计原则...................................................10第3章短路概述及短路电流计算...........................................123.1短路概述及危害...................................................123.2短路电流计算的一般规定...........................................12XX大学本科毕业设计（论文）3.3短路电流计算的主要目的...........................................133.4短路电流计算步骤.................................................133.5计算过程.........................................................143.5.1d-1点短路计算..............................................153.5.2d-2点短路计算..............................................173.5.3d-4点短路电流计算..........................................203.6计算结果.........................................................23第4章电气设备的选择...................................................244.113.8KV发电机电压设备选择........................................244.1.1断路器选择..................................................244.1.2第一台发电机出口母线选择....................................254.1.3第二、三台机组母线选择......................................264.1.4熔断器选择..................................................274.1.4厂用变进线柜选择............................................274．2发电机及其中性点设备选择........................................284.2.1消弧线圈选择................................................284.2.2隔离开关选择................................................294.3主变压器中性点设备选择...........................................304.3.1避雷器选择..................................................304.3.2隔离开关选择................................................304.3.3电流互感器选择..............................................304.4220KV设备选择...................................................324.4.1GIS设备选择................................................324.4.2母线选择....................................................344.4.3电压互感器选择..............................................354.4.4避雷器选择..................................................364.4.5高频阻波器选择.................................