摘要本文根据任务书上所给负荷以及相关设计需求，首先提出几种主接线方案并进行选择比较，选出最经济、可靠的主接线方式，接着通过变电所的设计规则和相关注意事项以及实际负荷确定主变压器的台数、容量、型号。然后通过最大持续电流以及短路电流计算对母线、断路器、隔离开关、电压互感器、电流互感器等电气设备进行选择和校验。最后画出电气主接线图，从而完成110kV变电所一次部分的设计任务。关键词110kV变电所，短路电流，设备选型，设备校验AbstractThis paper according to the task book to load and related design requirements,first proposed several main wiring scheme and the selection,choose is the mosteconomical and reliable way to the main terminal,followed by changing the designrules and related matters needing attention and the actual load to determine maintransformer units,capacity,model.Then,the maximum continuous current and short-circuit current of the bus,circuit breakers,isolation switches,voltage transformers,current transformers and other electrical equipment for selection andverification.Finally,the electrical main wiring diagram is drawn,so as to complete thedesign task of the 110kV substation.Key Words Substation,short-circuit current,equipment selection,calibration目录Abstract..第一章绪论…1.2国内外发展现状：第二章110kV变电所所址选择及电气主接线的选择-4-2.1电气主接线的设计规范-4-2.1.1电气主接线的设计原则：.....2.1.2电气主接线的设计步骤.-4-2.2电气主接线的基本要求2.2.1110KV侧母线连接方式的选择：-5-2.2.210kV侧母线的连接方式选择2.3本章小结…第三章变压器的选择.…3.1主变压器3.1.1容量的确定.…3.1.2台数的确定.…-10-3.1.3型式的确定.-11-3.1.4冷却方式的确定.-11-3.1.5调压方式的确定.3.2所用电变压器….-12-3.2.1所用变压器容量的确定：3.2.2调压方式的确定：…3.2.3冷却方式的确定：.-13-3.3本章小结第四章短路电流计算..-14-4.1短路电流计算.-14-4.2本章小结…-17-第五章电气设备的选择.…18-5.1各侧最大持续工作电流…