1、 I 本科毕业设计(论文)本科毕业设计(论文) 题目 110kV 变电站设计 学学 院院 : : 电气工程与自动化学院电气工程与自动化学院 专业名称:专业名称: 电气工程及其自动化电气工程及其自动化 年级班级:年级班级: 电气电气 11031103 班班 学生姓名学生姓名: : 指导老师指导老师: : I 摘 要 近年来 110kV 变电站的建设迅猛发展,科学的变电站设计方案能够提升配电网的 供电能力和适应性,降低配电网损耗和供电成本,减少电力设施占地资源,同时可以 增加系统的可靠性,节约占地面积,使变电站的配置达到最佳,不断提高经济效益和 社会效益。 本文针对山西潞安集团 110kV 变电站
2、的一次部分进行设计。此次设计的内容主要 包括负荷计算,主变压器的选择,电气主接线的设计,短路电流的计算,电气设备及 配电装置的选择。其中电气主接线的设计根据进出线、负荷的性质等因素综合确定电 气主接线的形式;短路电流计算中明确短路电流计算的目的,确定了短路电流计算 点,并做出等值电路图,从而进行标幺值的换算;电气设备选择的主要内容是对断路 器和隔离开关、母线、电流和电压互感器、电容器以及避雷器的选择等;配电装置的 选择则是结合变电站的实际情况,确定潞安集团变电站配电装置的形式。 关键词:110kV 变电站;一次设计;负荷计算; 短路电流;电气设备选择 II ABSTRACT In recent
3、 years, the construction of 110 kV substations has developed rapidly, the scientific design scheme of substation can improve the power supply and the adaptability of distribution network and reduce the loss , which can also reduce the land resource occupied by the electric power facilities and incre
4、ase the reliability of the system at the same time, whats more, it saves land area, overall, it makes the configuration of substation to achieve the best to improve the economic benefit and social benefit. SoThis paper is a part of Shanxi Luan Group 110kV substation design. The design content mainly
5、 includes load calculation, the selection of main transformer, the main electrical wiring design, short-circuit current calculation, electrical equipment and power distribution equipment selection. One of the main electrical wiring design according to the factors of import line, load properties dete
6、rmine the electrical wiring of the main forms of short-circuit current calculation; clear the purpose of short-circuit current calculation, to determine the point of short circuit current, and makes the equivalent circuit diagram, thus marking is commutative value; the main content of electrical equipment selection is to circuit breaker and isolating switch, bus, current and voltage transformer, capacitor and sel