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1、真诚为您提供优质参考资料，若有不当之处，请指正。摘要变电所是电力系统的一个重要组成部分，由电器设备和线路按一定的接线方式所构成，他从电力系统取得电能，通过其变换、分配、输送与保护等功能，然后将电能安全、可靠、经济的输送到每一个用电设备的转设场所。变电所供配电设计需要考虑很多方面，分析变电所担负的任务及用户负荷等情况.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，从而确定变电所的主接线方式，再进行短路电流计算，选择导线，选择变电所高低压电气一次设备等。本文详细介绍了某矿35kV变电所的设计。文中对主接线的选择、高压设备的选择、负荷计算、短路电流计算，各种继电保护选
2、择和整定计算皆有详细的说明。特别对主接线的选择，变压器的选择，还有一些电气设备如断路器、电流互感器、电压互感器等的选择校验作了详细的说明和分析。依据供电规则，着重解决了负荷统计、变电所主结线方案的选择、进出线的选择、变电所所址的选择、主变压器的台数和容量的选择、短路计算及开关设备的选择、防雷保护与接地装置的设计等问题，并结合地区的供电规则和工程实际情况选择出最合适的方案及参数、各种设备型号及容量。其中还对变电所的主接线，平面布置等通过CAD制图直观的展现出来 关键词：负荷计算: 电气主接线设计: 短路电流计算: 防雷AbstractSubstation is an important part
3、 of power system, the electrical equipment and lines at a certain wiring posed, he obtained power from the power system, through its transformation, distribution, transportation and protection function, then electric energy safe, reliable, and economical transport to each a used electric equipment s
4、et places. Transformer for distribution design need to consider many aspects, analysis of substation and tasks such as user load. The use of user data load calculation, to determine the reactive power compensation device users. At the same time, the choice of various transformers, so as to determine
5、 the substation main wiring mode, and then short-circuit current calculation, select the wire, select substation high and low voltage electrical once equipment, etc. This paper describes the 35 kV of a mine down the substation design. In the main connection of choice, the choice of high-voltage equi
6、pment, load calculation, short-circuit current basis, the protection of various options and setting calculation there are detailed instructions. In particular the choice of the main cable, transformers choice, there are some electrical equipment such as circuit breakers, current transformers, high v
7、oltage transformer, and so the choice of checking a detailed description and analysis. rules based on power supply, focus on resolving a load statistics, the mainline for selection, choice, the choice of the site by the substation, the main capacity and the number of Taiwans choice, short-circuit ca
8、lculation and the choice of switching equipment , Relay and the choice of setting, lightning protection and grounding equipment design and other issues, combined with the power of the actual situation of rules and choose the most appropriate solutions and various models and equipment capacity. It al
9、so substation on the main wiring, layout, adjacent to the high number of low-voltage protection devices, such as through the CAD drawing intuitive shown. Key words: load calculation: main electric wiring design: short-circuit current calculation: mine: relay目录1 概述12 负荷计算及无功补偿计算32.1负荷计算的目的和意义32.2 需用系
10、数法32.3 负荷统计与计算42.4 选择变压器并计算损耗52.5 计算6kV母线总负荷及全矿负荷82.6 主变压器的选择92.7 功率因数的补偿及电容器（柜）的选择113 短路电流计算143.1 算出井下电缆的根数153.2 计算各短路点的短路电流153.3 限流电抗器的选择与校检174 变电所主接线方式的选择及设备选择194.1 35kV主接线系统的确定194.2 35kV系统设备的选择194.3 6kV系统的确定及配电箱型号的选择214.4 进出线的选择244.5 高压电缆型号及截面的选择254.6 母线瓷瓶及穿墙套管的选择314.7 35kV室外构架的选择325 二次回路方案的确定及继
11、电保护的选择与整定335.1 35kV进出线与联络开关继电保护方案的选择335.2 变压器保护325.3 6kV配出线路的继电保护346 变电所的防雷与接地456.1 变配电所的防雷设计426.2 接地装置的设计及计算426.2.1 保护接地方案设计426.2.2 保护接地装置计算427 变电所的室外布置488 结论49致谢50参考文献51 / 1 概述1.1 本矿概况(1) 本矿为年产量120万吨，服务年限75年的矿井(2) 井筒深度为400m，主副两井距离为80m(3) 开拓方式：中央竖井，立井开拓(4) 瓦斯等级：轻沼气矿1.2 电源(1) 供电电压等级：35kV(2) 离矿井地面变电所
12、的距离：4km(3) 系统电抗 最大运行方式：=0.16 最小运行方式： =0.42(4) 输电方式：架空线双回路(5) 出线过流保护动作时间：3秒(6) 电费收取方法：两部电价制，固定部分按最高负荷收费，每千瓦6元。1.3 基本地质气象资料 (1) 日最高温度 37(2) 冻土层厚度 0.8m(3) 主导风向 西北(4) 最大风速 4m/s(5) 地震烈度 6度1.4 矿井负荷统计表表1-1 电力负荷统计及计算编号设备名称电动机型安装台数/工作台数设备容量kW需用系数Kx功率因数costan计算容量安装容量工作容量有功功率kW无功功率 kvar视在功率 kVA一地面高压1主井提升机绕1/11
13、48014800.840.850.621243.2770.81462.62副井提升机绕1/19859850.840.850.62827.4513973.43压气机同5/3225013500.570.950.331282.5-5941413.44东风井同2/116008000.490.920.426784-3368535西风井同2/1200010000.480.950.33960-4301052二地面低压1洗煤厂-105010500.790.840.646829.5535.9987.52机修厂-4504500.560.750.882252222.33363铁路煤仓-6006000.750.760
14、.855450384.8592.14矸石山-1501500.850.820.696127.589155.55坑木加工厂-2502500.80.830.672001342416工人村-5605600.750.820.698420293.2512.27支农-4504500.820.840.646369238.4439.38地面低压及照明-125012500.860.830.6721075722.41295.29东西风井低压侧-75750.820.850.6261.538.172.4三井下负荷1主排水泵-7/4560032000.530.870.5672968168334122东翼一采区-8508500.620.631.23527648.2836.53东翼二采区-9809800.630.651.17617.4722.4949.84西翼一采区-1
