降压变电所的电气设计课程设计

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1、摘摘 要要 随着经济的发展和现代工业建设的迅速崛起，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。设计是否合理，不仅直 接影响基建投资、运行费用和有色金属的消耗量，也会反映在供电的可靠性和安 全生产方面，它和企业的经济效益、设备人身安全密切相关。 变电所是电力系统的一个重要组成部分， 由电器设备及配电网络按一定的接 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。作为电能传 输与控制的枢纽，变电站必

2、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。随着计算机技术、现代通讯和网络 技术的发展，为目前变电站的监视、控制、保护和计量装置及系统分隔的状态提 供了优化组合和系统集成的技术基础。 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） 高低压配电系统设计与系统接线方案选择（5）继电保护的选择与整定（6）防雷与接地保护 等内容。 关键词关键词 负荷、主接线、短路容量、保护装置 AbstractAbstract Along with the economic development and the modern indu

3、stry developments of quick rising, the design of the power supply system become more and more completely and system.Because the quickly increase electricity of factories, it also increases seriously to the dependable index of the economic condition, power supply in quantity. Therefore they need the

4、higher and more perfect request to the power supply. Whether Design reasonable, not only affect directly the base investment and circulate the expenses with have the metal depletion in colour metal, but also will reflect the dependable in power supply and the safe in many facts. In a word, it is clo

5、se with the economic performance and the safety of the people. The substation is an importance part of the electric power system, it is consisted of the electric appliances equipments and the Transmission and the Distribution. It obtains the electric power from the electric power system, through its

6、 function of transformation and assign, transport and safety. Then transport the power to every place with safe, dependable, and economical. As an important part of powers transport and control, the transformer substation must change the mode of the traditional design and control, then can adapt to the modern electric power system, the development of modern industry and the of trend of the society life. The design of the substation include: (1) determine the overall program (2) Load