某机械厂10KV供电系统设计_.docVIP

2012 届毕业设计说明书 某机械厂10KV供电系统设计 系 、 部： 电气与信息工程系 学生姓名： 指导教师： 职称 讲师 专 业： 班 级： 完成时间： 5月20日 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。本变电所的设计包括了：（1）总体方案的确定（2）负荷分析（3）短路电流的计算（4）主接线方案的选择（5）继电保护的选择与整定（6）防雷设计。 关键词：变电所，负荷，短路电流，防雷设计 Abstract The substation is an importance part of the electric power system, it is consisted of the electric appliances equipments and circuitry. 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. The design of substation supplypower distribution should consider many problems.Analyse change to give or get an electric shock a mission for carrying and customers carries etc. 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 substation, then calculate the short-circuit electric current, choosing the style of the wire and once equipment of electric appliances and so on. This first step of design included:(1) ascertain the total project (2) load analysis(3) the calculation of the short-circuit electric current (4) the choice of line project (5) the choice and the settle of the protective facility (6) The design of prevent mine Key words：Substation，Load，Short-circuit electric current，The design of prevent mine 目 录 1 绪论…………………………………………………………1 1.1工厂供电的意义和要求………………………………1 1.2工厂供电设计的一般原则……………………………1 1.3本机械厂变电所的设计内容及步骤…………………2 2 负荷计算和无功功率补……………………………………3 2.1 负荷计算…………………………………………… 3 2.2 无功功率补偿………………………………………9 3变电所主变压器和主结线方案的选择……………………10 3