10KV变电所的低压配电设计(任务书,开题报告,外文翻译,中期检查表,论文16000字)
摘要
供配电系统是电力系统的电能用户，也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。本变电所的低压配电系统的设计包括了：（1）总体方案的确定（2）短路电流的计算（3）主接高压进线、一次设备和低压线路的选择与校验（4）继电保护的选择与整定[1]。
关键词：配电系统 负荷 短路电流 继电保护
Abstract
The substation is an important part of power system, the electrical equipment and lines at a certain wiring posed, it obtains the electric power from the electric power system, through its transformation, distribution, transportation and protection functions, and then power reliability, economy and safe delivery to every electrical equipment to set up places.The region of factory many fields and should consider many problems.Analyse change to give or get an electric shock a mission for carrying and customers etc.circumstance,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 incuded:(1) ascertain the total project (2) the calculation of the short-circuit electric current (3) the design of an electric shock the system design to connect with system and the choice of line project(4) the contents to defend the thunder and protection of connect the earth.
Keywords: Substation；load；short-circuit current；lighting protection design.
目录
1 绪论 1
1.1 课题背景及研究意义 1
1.2 低压配电设计的现状与发展趋势 1
1.3 相关知识 2
1.4 本课题的主要研究内容 4
2 对某厂基础材料的分析 5
2.1 分析该资料的目的 5
2.2 全厂用电和设备情况 5
2.3 本厂自然条件 6
3 短路电流的计算 6
3.1 电力系统短路计算的目的及步骤 6
3.2 低压电网短路计算 7
4 变电所的一次设备和低压线路的选择与校验 18
4.1 变电所高压进线的选择与校验 18
4.2 高压一次设备的选择 20
4.3 变电所低压一次设备的选择 26
4.4 低压线路导线的选择 28
5 变电所的低压继电保护 31
5.1 低压系统的定时限过电流保护 31
5.2 对低压侧线路的过负荷保护 38
6 结论 40
致谢 41
参考文献 42 |
