毕业设计---220KV变电站主接线毕业设计

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1、*大学毕业设计（论文）说明书 I 摘要 展望未来，我国能否在本世纪中叶基本实现现代化，相当大的程度上取决 于能源。电力工业是国民经济的基础，是重要的支柱产业，它与国家的兴衰和 人民的安康有着密切的关系，随着经济的发展和现代工业的建设的迅速崛起， 供电系统的设计越来越全面、系统，工厂用电量迅速增长，对电能质量、技术 经济状况、供电的可靠性指标也日益提高，因此对供电设计也有了更高、更完 善的要求。 变电站作为电能传输与控制的枢纽必须改变传统的设计和控制模式，才能 适应现代电力系统、现代化工业生产和社会生活的发展趋势。本设计讨论的是 220kV 变电站电气部分设计（一次系统） ，首先根据原始资料进行

2、分析，负荷计 算选择主变压器，然后在此基础上进行主接线设计，再进行短路计算，导体和 电气设备的选择，最后进行防雷接地设计。 关键词：变电站； 负荷计算； 短路电流； 设备选择； *大学毕业设计（论文）说明书 II ABSTRACT Looking ahead, our ability to achieve the middle of this century, modernization, to a large extent depends on energy. The power industry is the basis of the national economy is an impo

3、rtant pillar industry, the rise and fall with the State and the people closely related to the well-being, along with economic development and the rapid development of modern industry rise, more and more power supply system design comprehensive, systematic, rapid growth of plant consumption for power

4、 quality, technical and economic conditions, reliability of electricity supply are increasing, and therefore also have higher power supply design, better requirements. Substation as a hub for power transmission and control to change the traditional design and control mode, to adapt to the modern power system, modernization of industrial production and the development trend of social life. The design discussion is part of 220KV electrical substation design (a system), First of all, analyz