论文题目：临县35KV变电所设计
年级.专业.层次： 10电力Z9 学生姓名： 学号 函授站： 指导教师姓名：
2012 年7 月
**35KV变电所电气一次系统设计
摘要
在经济快速发展的当前，对电力系统的要求也在不断提高，因此对于电力系统的重要组成部分————变电所的设计也要不断推出新，因为只要这样才能满足不断增长的用电负荷要求，以及适应复杂多变的用电环境。对于企业而言，进行技术革新，提高产品的利用率降低产品的能耗，就显得更加尤为重要。
本次毕业设计是临县35KV变电所设计，主要针对砖厂、水泥厂、居民用户，该地区供电电压低、用电管理混乱，严重影响厂矿生产建设，因此建设这项工程是根据厂矿生产和建设的需要，对地方经济的协调发展具有非常重要的意义。
电气主接线是由高压电器通过连接线按其功能要求组成接受和分配电能的电路，成为传输强电流、高电压的网络。主接线的确定对电力系统整体及发电厂、变电所本身运行的可靠性、灵活性和经济性密切相关，并且对电气设备选择、配电装置布置、继电保护和控制方式的拟定有较大的影响。因此，主接线是一个综合性的问题，必须正确处理好各方面的关系，全面分析有关影响因素，通过技术经济比较，合理确定主接线的方案。 变压器在变电所中，用来向电力系统或用户输送功率的变压器，称为站用电压器。只供本所的照明、保护、微机、试验和其他日常及应急的变压器，称为站用变压器。所谓的主变压器是整个电房一次设计中最重要的设备之一。合理选择主变压器不仅可以减少投资，减少运行电能的损耗，而且可以提高供电可靠性，改善电网稳定性能，此外还影响到以后的扩建，因此主变压器的选择需要进行全方位的考虑，既要满足近期符合的需求，也要考虑到外来的扩建方案。
关键词： 电气主接线、变压器容量、变压器的校验、主变压器型式的选择 短路电流计算、设备选择、防雷及接地装置
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Linxian County Dongsheng 35KV substation
secondary system design
Abstract
Rapid economic development in the current power system, the requirements are also rising, as an important part of power system -- -- substation design should also continue to introduce new, because only in this way can meet the increasing electricity load requirement, and adapt to the complex and ever-changing electricity environment. To the enterprise, technological innovation, improve product utilization rate to reduce the energy consumption of products, it is more important.
The graduation design is the Linxian County Dongsheng 35KV substation design, mainly for the brick factory, cement plant, residential users, the regional power supply voltage low, power management, seriously affect the construction of factories, so the construction of this project is according to the factories and the need of construction, to the harmonious development of local economy is very important meaning of.
Main electrical connection is composed of high-voltage electrical connected via a line according to the functional requirements of component to accept and distribute electric energy transmission circuit, a high current, high voltage network. Connection to determine the overall power system and power plant, substation operation reliability, flexibility and economy are closely related, and the electrical equipment selection, distribution device arrangement, the way of protection and control formulation has bigger effect. Therefore, the main wiring is a comprehensive problem, we must correctly handle the relations of various aspects, a comprehensive analysis of the influence factors, through the comparison of technology and economy, rational determination of main wiring scheme.
Transformer in substation, power system or the user to transfer power transformer, the called station with voltage regulator. Only for the lighting, protection, computer, test and other routine and emergency transformer, called station transformer. The so-called
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