摘 要
随着社会经济迅速发展，交通运输方式越来越先进，人们对于运输方式的选择也越来越广泛。汽车客运，传统客运的主要方式之一，一直深受人们的青睐。汽车客运站，作为客运与旅客之间的桥梁,如今它不仅被要求外观审美上的舒适，而且在客运服务系统上要追求完美至善。如此而言，汽车客运站除外形的建筑设计外，电气设计也起着至关重要的作用。
设计以某汽车客运站的供配电系统为课题，阐述了客运站的发展现状和研究价值；利用需要系数法对客运站负荷进行负荷计算，利用标么值法对系统高低压侧发生短路故障进行了短路电流计算；根据负荷容量选择合适的变压器并确定主接线方案；根据短路计算电流选择断路器、隔离开关、负荷开关、互感器、导线等一次设备并校验;根据原始资料及计算数据，对0.4kV低压侧进行低压配电设计；根据工程实况，对该系统进行防雷接地保护设计，设计保证了客运站供配电及照明系统安全可靠，满足实际运行要求，使汽车客运站电气设计达到安全、可靠、经济、合理的要求。
关键字：汽车客运站；数据计算；设备选择；低压配电；防雷接地
I
ABSTRACT
With the rapid development of social economy, means of transportation more and more advanced, people's choice for the mode of transportation is more and more extensive. Passenger car, one of the main way of traditional passenger, has been well received by the people's favor. Bus station, as a bridge between the passenger and the passengers. Today it was required not only to appearance and aesthetic and comfortable and the passenger service system to the pursuit of perfection. So, the car passenger station in addition to the shape of the building design, electrical design also plays a vital role.
Design a car passenger station of power supply and distribution system for the subject, expounds the passenger station of the development status and research value; the coefficient of passenger station load load calculation, using the calibration? Value method of system of high and low pressure side of the fault of short circuit current calculation; according to the load capacity choice suitable transformer and to determine the main wiring plan; according to short-circuit current calculation circuit breaker, isolating switch, load switch, transformer, wire and so on a device and check; according to the original data and calculated data, of 0.4kV low-voltage side were low voltage power distribution design; according to the engineering reality, the lightning protection grounding protection design, It ensures the safety and reliability of the power supply and distribution system and lighting system of passenger station, and meets the requirements of the actual operation, so that the electrical design of the bus terminal can reach the requirements of safety, reliability, economy and reasonable.
Key words：bus terminal; data calculation; equipment selection; low voltage power distribution; lightning protection and grounding
II
目 录
摘 要 ............................................................................................................................................... I 目 录 ............................................................................................................................................. III 1 绪论 .............................................................................................................................................. 1
1.1 课题的发展现状及趋势 ................................................................................................... 1 1.2 课题研究的目的 ............................................................................................................... 1 1.3 工程原始资料 ................................................................................................................... 1 1.4 设计内容 ........................................................................................................................... 2 2 系统数据计算 ............................................................................................................................... 4
2.1 系统负荷计算 ................................................................................................................... 4
2.1.1 负荷计算内容 ....................................................................................................... 4 2.1.2 负荷计算方法 ....................................................................................................... 4 2.2 短路电流计算 ................................................................................................................... 5
2.2.1 短路电流计算条件及目的 ................................................................................... 5 2.2.2 短路电流计算方法及步骤 ................................................................................... 6 2.3 工程数据计算统计 ........................................................................................................... 7
2.3.1 负荷计算统计 ....................................................................................................... 7 2.3.2 短路电流计算统计 ............................................................................................... 8
3 变压器及主接线方案的选择 ..................................................................................................... 11
3.1 无功补偿计算 ................................................................................................................. 11 3.2 负荷分级及供电要求 ..................................................................................................... 11 3.3 变压器的选择 ................................................................................................................. 12
3.3.1 变压器容量和台数选择 ..................................................................................... 12 3.3.2 绕组数目及联结方式 ......................................................................................... 12 3.3.3 变压器类型选择 ................................................................................................. 13 3.4 电气主接线选择 ............................................................................................................. 14 3.5 工程设计说明 ................................................................................................................. 14
3.5.1 无功补偿计算 ..................................................................................................... 14 3.5.2 变压器及发电机选择 ......................................................................................... 15 3.5.3 主接线方案的确定 ............................................................................................. 16
4 一次设备的选择与校验 ............................................................................................................. 17
4.1 设备的选择与校验条件 ................................................................................................. 17
4.1.1 一次设备的校验项目 ......................................................................................... 17 4.1.2 一次设备的选择条件 ......................................................................................... 17 4.2 导线的分类 ..................................................................................................................... 19 4.3 导线的选择与校验 ......................................................................................................... 19 4.4 工程设计说明 ................................................................................................................. 20
4.4.1 一次设备选型 ..................................................................................................... 20 4.4.2 导线选型 ............................................................................................................. 22
5 低压配电系统设计 ..................................................................................................................... 25
5.1 常用低压配电方式 ......................................................................................................... 25 5.2 低压配电箱的选择 ......................................................................................................... 26
III
某汽车客运站供配电系统设计--毕业论文
