西安工程大学本科毕业设计（论文）
毕业设计（论文）
题 目： 110kV变电站电气部分设计 学 院： 电子信息学院 专业班级： 电气工程及其自动化2010级1班
指导教师： 职称： 副教授
学生姓名： 学 号：
西安工程大学本科毕业设计（论文）
摘 要
随着我国工业的发展，各行各业对电力系统的供电可靠性和稳定性的要求日益提高。变电站是连接电力系统的重要组成部分，是一种变换电压、接收和分配电能、控制电力的流向和调整电压的电力设施，在电力系统中有着极其重要的作用。变电站的安全可靠运行对电力系统的稳定运行至关重要。
本文根据收集的原始材料进行110kV变电站的设计。主要内容包括：查找、搜集了110kV变电站相关的基本资料，并通过对基本资料进行分析，确定了主变压器的台数、容量及型号；通过对变电站主接线设计进行分析，确定了110kV变电站主接线的类型；通过对短路电流进行计算，得到各电压等级侧的短路电流值，并以此对断路器、隔离开关、电压互感器、电流互感器、母线、避雷器、高压熔断器等设备进行了选型，确定主要电气设备的型号及参数，并进行动、热稳定校验，然后根据最大负荷电流确定继电保护装置，从而完成了110kV变电站电气部分的设计。
关键词：110kV变电站，电气主接线，主变压器，设备选型
I
西安工程大学本科毕业设计（论文）
ABSTRACT
Along with the continuous developing of agriculture and industry in our country, every walk of life’s demand of reliability and stability towards electric power system .Substation is a very important part of power system, take the task of transforming voltage, receiving and distributing the power, controlling the power flow and adjusting the voltage of power. It’s a crucial point to the stable operation of the power system that the substation works safely.
This paper which according to the collection of the raw material, main focus on the designing of primary power system in 110kV substation. The main contents include: searching and collecting the basic information related to the 110kV substation, and the basic data analysis, to determine the capacity, the type, and the number of main transformer. Through to the comprehensive information of the substitution that the main connection program of the transformer stations wiring is designed and confirmed. Based on the short circuit calculation, the short circuits are obtained and the preparation for equipment selection is made. This paper completed the selection of main electrical equipment, includes: circuit-breaker, disconnecting switch, potential transformer, current transformer, busbar, lighting arrestor，high voltage fuse etc. The models of main electrical equipments is confirmed, and the thermal stability section test and the dynamic stability test are checked, then according the maximum load current to determine the relay protection device . Thus completing the part of 110kV electrical substation design.
KEYWORDS: 110kV power substation，main electrical connection，main
transformer，selecting of equipments.
II
西安工程大学本科毕业设计（论文） 目 录
第1章 绪 论 ............................................................................................................ 1
1.1 课题背景.......................................................................................................... 1 1.2 课题研究的目的及意义.................................................................................. 2 1.3本文的主要研究内容....................................................................................... 2 第2章 变电站的原始资料........................................................................................ 3
2.1 变电站建设规模.............................................................................................. 3 2.2 变电站选址概况.............................................................................................. 3 2.3 变电站运行方式.............................................................................................. 3 2.4 变电站周围环境条件...................................................................................... 4 2.5 负荷计算.......................................................................................................... 4
2.5.1负荷计算的目的和意义.......................................................................... 4 2.5.2负荷分析与计算...................................................................................... 5 2.6 无功补偿.......................................................................................................... 6
2.6.1无功补偿装置.......................................................................................... 7 2.6.2无功补偿的计算...................................................................................... 8
第3章 电气主接线设计............................................................................................ 9
3.1 电气主接线设计的基本要求及原则.............................................................. 9
3.1.1 电气主接线设计的基本要求................................................................. 9 3.1.2 电气主接线设计的基本原则................................................................. 9 3.2 电气主接线设计的基本形式及其特点........................................................ 10 3.3 各侧主接线方案的拟定................................................................................ 11
3.3.1 110kV侧主接线方案 ............................................................................ 12 3.3.2 10kV侧主接线方案 .............................................................................. 13 3.3.3 本设计变电站主接线........................................................................... 14
第4章 主变压器的选择.......................................................................................... 15
III
相关推荐：
loading