长沙理工大学《发电厂电气部分》课程设计

目录

摘要.............................................................................................. - 2 -引言.............................................................................................. - 4 -第一篇设计说明书 .................................................................. - 5 - 第一节变电站主接线选定方案................................................ - 5 - 第二节变压器选定方案......................................................... - 7 - 第三节断路器与隔离开关选定方案 .................................... - 7 - 第四节母线选定方案............................................................. - 9 -第二篇设计计算书.............................................................. - 9 - 第一节电气主接线 .................................................................. - 9 - 第二节主变压器选择............................................................. - 19 - 第三节设备型号选择............................................................. - 21 - 断路器与隔离开关的选择 ................................................. - 24 -

母线的选择........................................................................ - 29 - 设计心得体会........................................................................... - 32 -

摘要

由发电、变电、输电、配电和用电等环节组成的电能生产与消费系统。它的功能是将自然界的一次能源通过发电动力装置转化成电能，再经输、变电系统及配电系统将电能供应到各负荷中心。电气主接线是发电厂、变电所电气设计的首要部分，也是构成电力系统的重要环节。主接线的确定对电力系统整体及发电厂、变电所本身的运行的可靠性、灵活性和经济性密切相关。并且对电气设备选择、配电装置配置、继电保护和控制方式的拟定有较大的影响。电能的使用已经渗透到社会、经济、生活的各个领域，在国民经济中的地位越来越高。本文是对220KV电压等级变电所一次部分的初步设计，主要完成了电气主接线的设计。包括电气主接线的形式的比较、选择；主变压器、启动/备用变压器和高压厂用变压器容量计算，台数和型号的选择；短路电流计算和高压电气设备的选择与校验。

关键词：变电所；电气部分；变压器；主接线设计；电气设备

教师批阅

ABSTRACT

By power generation, the substation, transmission and distribution and

power consumption of links such as electric power production and consumption

system. It's the function of the nature a energy through the power generation

power device into electrical energy, then after losing power distribution system

and distribution system, electric power supply to the load center. The main

electrical wiring is power plants, substation electrical design's first part, also be

constitute the important link of the power system. The determination of the

wiring in power system and power plants, whole substation of the reliability of

the operation itself, flexibility and economy closely related. And for electrical equipment selection, power distribution equipment configuration, relay protection and control of the recommended way to have a major influence. The

use of electricity has penetrated into society, economy, life in all areas, in the

position of the national economy is getting higher and higher. This paper is to

220 KV substation voltage level is a part of the preliminary design, the main

finished the design of the main electrical wiring. Including the main electrical

wiring form of comparison, choice; The main transformer, start/standby transformers and high pressure factory with the transformer capacity calculation,

the Numbers and types of choice; Short circuit current calculation and the high

voltage electrical equipment choice and calibration.

Key words:converting station，Electrical part，transformer，The Lord wiring

design，Electrical equipment