110kv变电站电气部分设计论文毕设论文.doc

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 指导教师： 职称： 学生姓名： 学 号： 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 ABSTRACT Along with the continuous developing of agriculture and industry in our country, every walk of life’s demand of reliability and stability towards electric power system .Substation is a very important part of power system, take the task of transforming voltage, receiving and distributing the power, controlling the power flow and adjusting the?voltage of power. It’s a crucial point to the stable operation of the power system that the substation works safely. This paper which according to the collection of the raw material, main focus on the designing of primary power system in 110kV substation. The main contents include: searching and collecting?the?basic?information related to the 110kV substation,?and?the basic data analysis,?to determine the?capacity, the type, and?the number of main transformer. Through to the comprehensive information of the substitution that the main connection program of the transformer stations wiring is designed and confirmed. Based on the short circuit calculation,?the short circuits are obtained and the preparation for equipment selection is made. This paper completed the selection of main electrical equipment, includes: circuit-breaker, disconnecting switch, potential transformer, current transformer, busbar, lighting arrestor，high voltage fuse etc. The models of main electrical equipments is confirmed, and the thermal stability section test and the dynamic stability test are checked, then according the maximum?load cur