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：4090304XXXX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。ABSTRACTTheamountofwaterresourcesinourcountryisthebiggestoneintheworld.Itwillbeastrongdrivingforceforthedevelopmentofthenationaleconomythatturnsthewaterintoelectricalenergythroughhydropowerstation.Sothedesignworkofpartofthehydropowerplantelectricalisveryimportantandonlythereasonablesolutionisnecessarytomaximizecomprehensivebenefitsforthepowerstation.ItisdeterminingthatthemainelectricalwiringUSEStheexpandedunitconnectionthroughtheanalysisofrawdataofDaJinPinghydropowerstationandtheconnectingwiththeactualsituation.Hydro-generatorcurveofshortcircuitcurrentcalculationisusedtocalculateshortcircuitcurrent;Basedonelectricalequipmentmanualselectingtransformer,bus,circuitbreakers,isolatingswitchesandotherelectricalequipment,anditisnecessarytochecktheselectedequipmentcalibration;andthenmapoutthecorrespondingelectricmainwiringdiagramandauxiliarypowerwiringdiagram;Forgenerators,transformers,linesandotherequipment,therelayprotectionisintroducedaswellastodesignthecorrespondinglightningprotectionandgroundingdesign.Finally,thepowerplantautomationdesigniscarriedout.Keywords:mainelectricalconnection,short-circuitcurrent,electricalequipmentselectionandcalibration,protection,automation.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..................................................
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