毕业论文--110kv变电站电气部分设计.doc

西安工程大学本科毕业设计(论文) 毕业设计(论文) 题目: 110kV 变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 2010 级1班西安工程大学本科毕业设计(论文) I 摘要随着我国工业的发展,各行各业对电力系统的供电可靠性和稳定性的要求日益提高。变电站是连接电力系统的重要组成部分,是一种变换电压、接收和分配电能、控制电力的流向和调整电压的电力设施,在电力系统中有着极其重要的作用。变电站的安全可靠运行对电力系统的稳定运行至关重要。本文根据收集的原始材料进行 110kV 变电站的设计。主要内容包括:查找、搜集了 110kV 变电站相关的基本资料, 并通过对基本资料进行分析,确定了主变压器的台数、容量及型号;通过对变电站主接线设计进行分析,确定了 110kV 变电站主接线的类型;通过对短路电流进行计算,得到各电压等级侧的短路电流值,并以此对断路器、隔离开关、电压互感器、电流互感器、母线、避雷器、高压熔断器等设备进行了选型,确定主要电气设备的型号及参数,并进行动、热稳定校验,然后根据最大负荷电流确定继电保护装置,从而完成了 110kV 变电站电气部分的设计。关键词: 110kV 变电站,电气主接线,主变压器,设备选型西安工程大学本科毕业设计(论文) II ABSTRACT Along with the continuous developing ofagriculture and industry inour country, every walk oflife ’sdemand ofreliability and stability towards electric power system .Substation isavery important part ofpower system, take the task of transforming voltage, receiving and distributing the power, controlling the power flow and adjusting the voltage ofpower. It’sacrucial point tothe stable operation ofthe power system that the substation works safely. This paper which according tothe collection ofthe raw material, main focus onthe designing ofprimary power system in110kV substation. The main contents include: searching and collecting the basic information related tothe 110kV substation, and the basic data analysis, todetermine the capacity, the type, and the number ofmain transformer. Through prehensive information ofthe substitution that the main connection program ofthe transformer stations wiring isdesigned and confirmed. Based onthe short circuit calculation, the short circuits are obtained and the preparation for equipment selection ismade. This pleted the selection ofmain electrical equipment, includes: circuit-breaker, disconnecting switch, potential transformer, current transformer, busbar, lighting arrestor ,high voltage fuse etc. The models ofmain electrical equipments is confirmed, and the thermal stability section test and the dynamic stability test are checked, then according the maximum load current todetermine the