1、 电气工程设计(课程设计)电气工程设计(课程设计) 题 目:3120MVA 闽北 220kV 变电站初步设计 (电气主接线及所用电设计部分) 队 长: 队 员: 专业系别: 电气工程与自动化 年 级: 指导教师: (签名) 2012 年 11 月 26 日 3120MVA 闽北 220kV 变电站初步设计电气主接线及所用电设计部分 I 3120MVA 闽北 220kV 变电站初步设计 电气主接线及所用电设计部分 摘要 根据任务书设计邵武 220kV 变电站。该变电站主要是缓解邵武地区电网压 力。 本设计的重点是 220kV 变电站的电气一次部分。 本设计主要分成电气主接线 的设计,短路电流的计
2、算以及电气设备的选择。 电气主接线部分是设计的基础部分, 本部分通过对任务书的分析确定了变电 所主变压器台数、容量、型式,然后通过综合比较各种接线方式的特点、各自的 优缺点,在可靠性、灵活性等技术比较后初步确定两种较优的接线方式再经过综 合投资和年运行费用的经济比较选择最终的接线方式。 变电所所用电设计主要是 确定所用电电压等级,变电所主变压器台数、容量与型式,设计变电所所用电接 线方式并对所用电接线方式进行说明。短路电流的计算是很重要的一个部分,它 为选择断路器,隔离开关等电气设备做准备;电气设备的选择是根据短路电流的 计算结果选择线路,电流互感器,电压互感器,断路器,熔断器,避雷器等电气
3、设备并进行校验。 关键词:220kV 变电站,电气主接线,短路电流,选择,校验 II 3 120MVA North Fujian preliminary design of 220 kV SubstationMain Electrical wiring design and the design of the electricity Abstract According to the task of designing Shaowu 220 kV substation. The substation is the main regional power grid Shaowu ease the
4、 pressure. The focus of this design is 220 kV electrical substation.this design is generally divided into two main electric cable design, calculation of the current short-circuit electrical equipment and the choice. Electrical wiring the main part of the design is the basis of this part of the missi
5、on through the analysis of the main transformer substation of Taiwan, capacity, form, and then passed through a comprehensive comparison of various characteristics of the connection mode, their respective advantages and disadvantages, reliable , Flexibility, and other technical comparison of the two
6、 preliminary determine the optimum connection mode again after the comprehensive investment and operating costs in the economy is relatively select the final connection mode. By the main electricity substation design is determined by the voltage of electricity, the main transformer substation of Taiwan, capacity and form, designed by the electricity substation connection mode and the electricity wiring that way.Short