1、 论文摘要 本文是对广州某110KV变电站一次部分的设计, 变电站电压等级为110/35/10KV, 110KV 是本变电站的电源电压,35KV 和 10KV 是二次电压。待设计的变电站的电源, 由双回 110KV 线路送到本变电站,在中压侧 35KV 母线送出 7 回线路,在低压侧 10KV 母线送出 10 回线路。在本变电站 110KV 母线有 2 回输出线。变电站从电力系统整体 出发,力求电气主接线简化,配置与电网结构相应的保护系统,采用紧凑布置、高质 量的 110KV 变电所为目的,对所有的电气设备,电气主接线,电气设备保护装置等进 行优化,使整个设计方案能够达到安全、可靠、经济、环保
2、地对用户进行供电。 关键词:变电站变电站 线路线路 电气设备电气设备 Abstracts This paper is a part of 110 kv substations guangzhou some voltage level, the design for 110/35 / consumers 10KV 110 kv substations, this power supply voltage 35KV and consumers 10KV, secondary voltage. To design the power substation, the double line to 11
3、0 KVsubstations, in medium voltage side this 35KV busbar struck out seven back lines, the low voltage side sent out 10 back consumers 10KV bus routes. 110 KVsubstations in the bus has 2 back output line. Starting from the power substation system as a whole, trying to simplify the main electrical wir
4、ing, configuration and grid structure corresponding protection system, adopting the compact layout, high quality of 110 KVsubstations, for the purpose of all electrical equipment, the main electrical wiring, equipment electrical protection devices, etc is optimized, make whole design scheme can reach safe, reliable, economic, environmental protection to the users power supply. Keywords: substation lines electrical equipments 目 录 前言 1 电气主接线设计 1.1 电气主接线基本要求 1.2 电气主接线方案确定 1.3 变压器方案确定 1.4 电气主接线初步设计图 2 短路电流计算 2.1 计算短路电流的原因 2.2 电路元件参数计算