文档介绍：毕业设计(论文)
题目(220KV变电站一次电气设计)
系别:
机电信息学院
专业名称:
电气工程及其自动化
学生姓名:
学号:
指导教师姓名、职称:

完成日期 2011 年 12 月
摘要
变电站是电力系统的重要组成部分,担负着电能转换和电能重新分配的重要任务,对电网的安全和经济运行起着举足轻重的作用。变电站是接受电能、变换电压和分配电能的,实现电能的远距离输送,将电能分配到用户,将发电机电压进行多次变换,有电力变压器、配电装置和二次装置构成。按变电所的性质和责任的不同,分为升压变电所和降压变电所,其中与发电机相连的为升压变电所,其余为降压变压变电所。按地位和作用不同分为枢纽变电所、地区变电所和用户变电所。随着国民经济的持续发展,人民的生活质量和生活水平不断提高,家用电器越来越多的进入千家万户,人们对用电质量的要求越来越高。并且电力系统的发展电网结构越来越复杂。需准确掌握电网和变电站的运行情况。并逐步采用无人值班管理模式,全部自动化操作。
本设计的讨论是220KV变电站一次电气部分的设计,首先对原始资料进行分析,设计主电气主接线,选择主变压器,再进行短路计算,选择设备及设备校验,然后进行防雷接地以及保护、配电装置设计。
关键字:变电站;主接线;短路计算;设备选择校验。
Abstract
Substation is the important part of power system, charged with the conversion of electrical energy and electrical energy redistribution of the important task of power grid, the safety and economic operation play a decisive role. Substation is the acceptance of electric energy, transformation and distribution of electric voltage, electric energy based on the long distance transportation, electric power to be allocated to the user, the generator voltage is changed for many times, a power transformer, distribution device and the two device. Substation according to the nature and the responsibility is different, divide a step-up substation and step-down substation, which are connected with a power generator for step-up substation, transformer substation for the rest of buck. According to the position and role of different hub substation, area substation and user substation. With the development of national economy, people's quality of life and standard of living rise ceaselessly, household appliances more access to thousands of households, the power quality es more and more important. And the development of power work structure is ing more and plex. To accurately grasp the grid and substation operation. And the gradual adoption of unmanned management mode, full automatic operation.
The design of 220KV substation primary electrical part of the design, the first of the original data to carry on the analysis,