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1、 毕业设计（论文） 设计说明书设计(论文)题目：永宁 35kV 变电站永宁 35kV 变电站设计摘摘 要要变电站是改变电压的场所。为了把 发电厂发出来的电能输送到较远的地方，必 须把电压升高，变为高压电，到用户附近再按需要把电压降低，这种升降电压的工作 靠变电站来完成。变电站的主要设备是 开关和变压器。按规模大小不同，称为 变电 所、配电室等变电站是把一些设备组装起来，用以切断或接通、改变或者调整电压， 在电力系统中，变电站是输电和配电的集结点，变电站主要分为：升压变电站，主网 变电站，二次变电站，配电站。 变电站是电力系统中变换电压、接受和分配 电能、控制电力的流向和调整 电压的电力设施，它
2、通过其 变压器将各级电压的 电网联系起来。 变电站起变换电压作用的设备是变压器，除此之外，变电站的设备还有开闭电路 的开关设备，汇集电流的 母线，计量和控制用互感器、仪表、 继电保护装置和防雷 保护装置、调度通信装置等，有的变电站还有 无功补偿设备。 变电站的主要设备和 连接方式，按其功能不同而有差异。 本设计研究对象为 山西吕梁离石永宁煤 矿，对其区域、设备进行供电。本次 35kv 变电所的初步设计包括 :总体方案确定 ;负荷分析；短路电流的计算 ;配电系统 设计与系统接线方案选择 ;变电所高压进线、一次设备和低压出线的选择 ;防雷与接 接保护等内容。关键词关键词: :35kv 变电所;负荷
3、计算;短路电流；变压器选择;开关设备选择35kV substation of yongning designAbstractAbstractThe place is change voltage substation. In order to make electricity power transmission to distant places, must take voltage increases, into high voltage and to users according to need to nearby voltage reduced again, this kind of
4、 work by lifting voltage substation to complete. The main transformer substation equipment is switch and transformers. According to size different operations etc, called the substation, the substation is used to assemble some equipment to cut or connected, change or adjusting voltage, in the power s
5、ystem, the substation transmission and distribution of power are mainly divided into the rally point, the substation provids pressor substation, substation, power substation, second, match. Substation is in power system transform voltage, accept and distribution of electricity, control power flow an
6、d adjust voltage of power facilities, through its various voltage transformer will link the power grid. Since the voltage substation equipment is role change, in addition, transformer substation equipment and open and close circuit switching equipment, pooling current, measurement and control of bus
7、bar with transformer, instrument, relay protection device and lightning protection device, scheduling . communication device etc, some substation and reactive compensation equipment. The main equipment and connection substation, according to its function way will vary. This design research object of
8、 shanxi coal mine, the yongning lishi lvliang on the regional, equipment for power supply. This 35kv substation the preliminary design include: overall plan; Load analysis; The calculation of short-circuit current; Distribution system design and system wiring schemes choose; Substation high-pressure
9、 into line, a equipment and low-pressure outlet choice; Lightning protection and meet meet protection, etc.Key words: 35kv substation; load calculation; short-circuit current; transformer choice; switch equipment目录目录摘 要.IAbstract.II概述.41.1 原始数据 .41.1.1 周边情况 .41.1.2 地区气象条件 .41.2 基本要求 .51.3 性能指标 .51.4 设计原则 .51.5 设计内容及步骤 .61.6 所址条件 .72.电气主接线方案设计 .82.1 电气主接线的概念 .82.2 电气主接线设计原则 .82.3 本所性质分析 .93 负荷计算与变压器选择 .103.1 负荷分级与负荷曲线 .103.1.1 供电负荷分级及其对供电的要求 .102.1.2 负荷曲线 .103.2 矿井用电负荷计算 .113.2.1 设备容量确定 .
