110KV降压变电站电气一次部分设计第一部分设计说明书...................................................................................................................2第1章设计说明...................................................................................................................21.1环境条件..................................................................................................................21.2电力系统情况..........................................................................................................21.3设计任务..................................................................................................................3第2章电气主接线的设计...................................................................................................32.1电气主接线概述[1]............................................................................................32.2110KV侧主接线的设计.........................................................................................42.335KV侧主接线的设计...........................................................................................42.410KV侧主接线的设计...........................................................................................42.5主接线方案的比较选择..........................................................................................42.6主接线中的设备配置..............................................................................................6第3章主变压器的选择.......................................................................................................83.1负荷分析..................................................................................................................83.2主变压器台数的确定..............................................................................................93.3主变压器相数的确定..............................................................................................93.4主变压器容量的确定..............................................................................................9第4章短路电流的计算.........................................