需要购买设计请加我们的QQ962120665，电话18730072785 |
摘要
变电站是电力系统的重要组成部分，它直接影响整个电力系统的安全与经济运行，是联系发电厂和用户的中间环节，起着变换和分配电能的作用。
这次设计以220kV降压变电站为主要设计对象，分析变电站的原始资料确定变电站的主接线；通过负荷计算确定主变压器台数、容量及型号。根据短路计算的结果，对变电站的一次设备进行了选择和校验。同时完成配电装置的布置、防雷保护的设计以及全站继电保护的配置。
关键词：变电站电气主接线；短路电流计算；一次设备；防雷保护
The designing of the primary part of 220/110/10kV step-down substation
ABSTRACT
A substation is an important component of electricity system and has the direct impact on the security and rational operation of the whole power systems,it is the intermediate which links power plants and users,and plays an important role in changing and distributing electrical energy.
My design considers the terminal 220kV substations as the main design target,and makes analysis on the original date of substation and defines its main wiring; through the calculations of load to determine the main transformers’number, capacity and types . My design also focuses on selecting and proofreading for the one-time equipment of substation according to result of calculation for short-circuit; at the same time I complete the design about the distribution devices’ layout, mine-protection and earthing devices.
Key words: substation electrical main wiring ; short-circuit current calculation ; one-time equipment ; mine-protection