1、 毕毕 业业 设设 计计(论文论文) 题 目: 110kV 降压变电站电气一次系统设计 系 别 专业班级 学生姓名 指导教师 20102010 年年 6 6 月月 I 110kV 降压变电站电气一次系统设计 摘要 随着电力技术高新化、复杂化的迅速发展,电力系统在从发电到供电的所有领域中, 通过新技术的使用,都在不断的发生变化。变电所作为电力系统中一个关键的环节也同样 在新技术领域得到了充分的发展。 变电站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
2、所。作为电能传输与控制的枢纽,变电站必 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。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。 110kV 变电站属于高压网络,该地区变电所所涉及方面多,考虑问题多,分析变电所 担负的任务及用户负荷等情况,选择所址,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,从而确定变电站的接线方式,再进行短路电流 计算,选择送配电网络及导线,进行短路电流计算。选择变电站高低压电气设备,为变电 站平面及剖面
3、图提供依据。本变电所的初步设计包括了: (1)总体方案的确定(2)短路 电流的计算(3)高低压配电系统设计与系统接线方案选择(4)防雷保护等内容。 关键词: 变电站;输电系统;配电系统;高压网 II A DESIGN OF ELETRIC SYSTEM FOR 110kV STEP-DOWN TRANSFORMER SUBSTATION ABSTRACT Along with the high and quick development of electric power technique, electric power system then can change from the gen
4、erate of the electricity to the supply the power. 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 function of
5、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 el
6、ectric power system, the development of modern industry and the of trend of the society life. The region of 110-voltage effect many fields and should consider many problems. Analyse change to give or get an electric shock a mission for carrying and customers carries etc. circumstance, choose the address, 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 m