发布时间 : 星期一 文章李庄煤矿35KV地面变电所供电系统设计更新完毕开始阅读
李庄煤矿35KV地面变电所供电系统设计
摘 要
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总体方案的确定、负荷分析、短路电流的计算、高低压配电系统设计与系统接线方案选择、继电保护的选择与整定、防雷与接地保护等内容。
随着电力技术高新化、复杂化的迅速发展，电力系统在从发电到供电的所有领域中，通过新技术的使用，都在不断的发生变化。变电所作为电力系统中一个关键的环节也同样 在新技术领域得到了充分的发展。
关键词：变电站、负荷、输电系统、补偿装置、负荷分析
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35 KV substation ground coal power supply system design of li zhuang
ABSTRACT
The substation is an importance part of the electric power system, it is consisted of the electric appliances equipments and the Transmission and the Distribution. It obtains the electric power from the electric power system, through its function of transformation and assign, transport and safety. Then transport the power to every place with safe, dependable, and economical. As an important part of power’s transport and control, the transformer substation must change the mode of the traditional design and control, then can adapt to the modern electric power system, the development of modern industry and the of trend of the society life.
The region of 110-voltage effect many fields and should consider many problems. Analyse change to give or get an electric shock a mission for carrying and customers carries etc. circumstance, choose the address, make good use of customer data proceed then carry calculation, ascertain the correct equipment of the customer. At the same time following the choice of every kind of transformer, then make sure the line method of the transformer substation, then calculate the short-circuit electric current, choosing to send together with the electric wire method and the style of the wire, then proceeding the calculation of short-circuit electric current. This first step of design included: ascertain the total project 、 load analysis、 the calculation of the short-circuit electric current 、the design of an electric shock the system design to connect with system and the choice of line project、 the choice and the settle of the protective facility 、 the contents to defend the thunder and protection of connect the earth. Along with the high and quick development of electric power technique, electric power system then can change from the generate of the electricity to the supply the power. ords
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KEY WORDS：substation ,load ,transmission system , correction equipment. load analysis
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目 录
摘 要 ........................................................................................................................................................... 1 ABSTRACT ............................................................................................................................................... 2 目 录 ............................................................................................................................................................ I 第一章 概述 ............................................................................................................................................. 1 1.1 电源 ................................................................................................................................................ 1 1.2 基本地质气象资料 ......................................................................................................................... 1 第二章 负荷计算及变压器选择 ............................................................................................................. 1 2.1 负荷分析 ......................................................................................................................................... 1 2.1.1 负荷分类 ................................................................................................................................. 1 2.2 负荷曲线 ......................................................................................................................................... 1 2.3 矿井用电负荷计算 ......................................................................................................................... 2 2.3.1 设备容量确定 ......................................................................................................................... 2 2.3.2 需用系数的含义 ..................................................................................................................... 2 2.3.3 本系统的负荷计算 ................................................................................................................. 3 2.3.4 原始资料 ................................................................................................................................. 4 2.4.1 计算负荷： ............................................................................................................................. 8 2.4.2 全矿负荷统计 ....................................................................................................................... 12 2.5 无功功率的补偿 ........................................................................................................................... 12 2.6 主变压器的选择 ........................................................................................................................... 14 2.6.1 主变压器容量的确定 ........................................................................................................... 14 2.6.2 主变压器台数的确定 ........................................................................................................... 14 2.7 全矿总负荷的计算 ....................................................................................................................... 15 2.7.1 变压器损耗计算 ................................................................................................................... 15 2.7.2 全矿总负荷 ........................................................................................................................... 15 第三章 电气主接线的设计 ................................................................................................................... 16 3.1 电气主接线的概述 .................................................................................................................. 16 3.2 电气主接线的设计原则和要求 ................................................................................................... 16 3.2.1 电气主接线的设计原则 ....................................................................................................... 16 3.2.2 电气主接线设计的基本要求 ............................................................................................... 17 3.3 电气主接线方案的比较 ............................................................................................................... 18 第四章 短路电流的计算 ....................................................................................................................... 21 4.1 短路电流计算的一般概述 ........................................................................................................... 21 4.1.1 短路的原因 ........................................................................................................................... 21 4.1.2 短路的危害 ........................................................................................................................... 21 4.1.3短路的类型 .............................................................................................................................. 22 4.2短路电流计算 ................................................................................................................................. 22 第五章 电气设备的选择与校验 ........................................................................................................... 27 5.1 高压电器设备选择的一般原则 .................................................................................................... 27 5.1.1 按正常工作条件选择高压电气设备 ................................................................................... 27 5.1.2 按短路条件校验 ................................................................................................................... 29 5.2 电气设备的选择和校验 ............................................................................................................... 30 5.2.1 高压断路器的选择和校验 ................................................................................................... 30 5.2.2 低压隔离开关的选择和校验 ............................................................................................... 31
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