摘  要
我国经济的发展和人民生活水平的提高,人们对用电要求也越来越高,使变电站设计显得十分重要。设计符合城市发展和社会建设需要的变电站,才能使变电站满足人民的生活需要,使社会生产力得到持续的发展力,为企业的发展带来更大的社会效益与经济效益。
本次设计首先根据任务要求,结合系统,线路以及所有负荷参数,分析系统负荷的范围及发展趋势.通过对拟建110KV变电站的总体概述和出线考虑,对负荷状况的分析研究,并且基于安全,可靠,灵活,经济的基本要求,确定出110KV,35KV,10KV电气主接线,然后根据负荷计算和供电范围确定合适的主变压器台数,容量和型号.最后,根据最大持续工作电流及三相短路电流的分析计算,对高压断路器,隔离开关和电压,电流互感器等主要电气设备做出选择,这基本完成了110KV变电站主电路图部分的设计.最后进行变电站防雷保护的设计。
关键词：邛崃市；变电站；110Kv；主接线；短路计算
Abstract
With the development of our economy and the improvement of people's living standard, people's demand for electricity is becoming higher and higher, which makes substation design very important. In order to meet the needs of urban development and social construction, the substation can be designed to meet the needs of people's life, make social productive forces get sustainable development power, and bring greater social and economic benefits to the development of enterprises.
This design first according to the task requirements, combined with the system, lines and all load parameters, analysis of the system load range and development trend. Through the overall overview of the proposed 110 KV substation and the consideration of the outgoing line, the analysis and study of the load condition, and based on the basic requirements of safety, reliability, flexibility and economy, determine the 110 KV,35KV,10KV of electrical main wiring, and then determine the appropriate number of main transformers, capacity and model according to the load calculation and power supply range. Finally, according to the analysis and calculation of the maximum continuous working current and three-phase short circuit current, the high voltage circuit breaker, the disconnector and the voltage and current are mutually.  sensor and other main electrical equipment to make a choice, which basically completed 110 KV substation main circuit diagram part of the design. Finally, the design of lightning protection for substation is carried out.
Keywords: Qionglai city; substation ;110 Kv; main wiring; short circuit calculation






目  录
第一章 邛崃市110KV变电站一次部分设计	1
1.1 110KV变电站总体分析	1
1.2负荷分析及计算	2
第二章 变电站设计	4
2.1变压器选择	4
2.1.1主变台数的确定	4
2.1.2主变容量的确定	4
2.1.3主变绕组数量	4
2.1.4主变绕组连接方式	5
2.1.5主变压器的调压方式和冷却方式选择	6
2.2 无功补偿装置的设计	7
2.2.1进行补偿装置的意义	7
2.2.2无功补偿装置的设计	7
2.3 电气主接线设计	9
2.3.1电气主接线的概况	9
2.3.2主接线的设计	10
2.3.3主接线中的设备配置	14
2.4 各级配电装置的设计	16
2.4.1配电装置的要求	16
2.4.2配电装置的设计	16
2.4.3总平面布置设计注意事项	17
2.5 电气设备的选择	18
2.5.1电气设备选择的概述	18
2.5.2选择设备的基本原则	18
2.5.3110KV侧断路器的选择	19
100KA	19
2.5.4110KV隔离开关的选择	20
2.5.5敞露母线选择	20
2.5.6 110KV电流互感器选择	22
2.5.7电压互感器的选择	23
2.5.8高压开关柜的选择	23
第三章 短路电流计算	28
3.1短路电流计算的目的	28
3.2短路电流计算	28
第四章 变电站的保护整定设计	33
4.1 继电保护	33
4.1.1主变压器保护	33
4.1.2线路保护	36
4.1.3母线保护	36
4.2 防雷设计	37
4.2.1防雷设计原则	37
4.2.2防雷设计	39
总  结	42
致  谢	43
参考文献	44