江 西 理 工 大 学本 科 毕 业 设 计（论文）题 目：110kV 城市变电站设计专题题目：学 院：电气工程与自动化学院专 业：电气工程及其自动化专业时间：2015 年 6 月 10 日摘 要变电站是电力系统的重要组成部分，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，直接影响整个电力系统的安全经济运行。电气主接线的设计是变电站设计的首要任务，也是构成电力系统的重要环节。它的拟定直接关系着全站电气设备的选择、配电装置的布置、继电保护和自动装置的确定，是变电站电气部分投资的重要决定因素。此外，在变电站的设计中，既要求所变电能很好地服务于工业生产，又要切实保证工厂生产和生活的用电的需要，并做好节能工作，就必须达到满足安全、可靠、优质、经济这四点要求。本设计书中所要求的 110kV 变电站属于高压网络，该地区变电所所涉及方面多，考虑问题多，分析变电所担负的任务及用户负荷等情况，选择所址，利用用户数据进行负荷计算，确定用户无功功率补偿装置。同时进行各种变压器的选择，从而确定变电站的接线方式，再进行短路电流计算，选择送配电网络及导线，进行短路电流计算。选择变电站高低压电气设备，为变电站平面及剖面图提供依据。本变电所的初步设计包括了：（1）变电所总体分析 （2）主变压器的选择 （3）电气主接线设计 （4）短路电流的计算 （5）电气设备的选择 （6）防雷设计。关键词： 主接线设计；短路电流；电气设备选择ABSTRACTSubstation is an important part of power system, is the intermediate link between power plants and users, plays a role in transformation and distribution of electric energy, a direct impact on the safe and economic operation of the whole power system. The design of electrical main wiring is the main task of the substation design, and is the important link of the power system. Its formulation is directly related to the choice of the total station electrical equipment, the arrangement of the distribution equipment, the relay protection and the determination of the automatic equipment, and the important determinant of the investment of the electrical parts of the substation. In addition, in the design of substation, not only requires the substation can very good service in industrial production, but also to ensure the factory production and living electricity needs, and do a good job of energy conservation work, we must to meet the safety, reliability, quality, economic demands these four points.Required in the design of the book of the 110kV substation belongs to the high voltage network, the area change are involved in many aspects, to consider the issue, and tasks such as user load of substation and analysis, the choice of the site, the use of user data load calculation and determine the user of reactive power compensation device. At the same time, the choice of various transformers, so as to determine the substation wiring, and then short-circuit current calculation, choose power distribution network and wire, short-circuit current calculation. Select the high and low voltage electrical equipment in the substation, provide the basis for the substation plan and the profile map. Preliminary design of the substation, including: (1) substation overall analysis (2) main transformer (3) the main electrical wiring design (4) short circuit current calculation (5) electrical equipment selection (6) lightning protection design.Key words: main wiring design; short-circuit current; electrical equipment selection目 录第一章 绪论 .11.1 选题背景和意义 .11.2 原始资料 .31.3 变电所总体分析 .4第二章 主变压器选择 .62.1 负荷分析计算 .62.2 主变压器的选择 .72.3 站用变压器的选择 .11第三章 电气主接线设计 .123.1 电气主接线的设计原则 .123.2 电气主接线方式设计的基本要求 .123.3 电气主接线方案的确定 .14第四章 短路电流计算 .174.1 短路电流计算的目的 .174.2 短路电流计算的一般规定 .174.3 短路电流计算的步骤 .184.4 短路电流计算过程 .184.5 短路电流计算结果表 .23第五章 电气设备选择 .255.1 导体和电气设备选择的一般条件 .255.2 主要电气设备的选择 .275.3 电气设备的选择 .305.4 高低压配电装置型式选择 .