毕业论文-110kv的变电站的一次设计.doc

摘 要 从我们的科学家发现电的存在开始，我们就没有停止过对电的探索，对我们而言，我们已经不满足电仅仅做照明使用，科技的不断发展，新科技产品也都应运而生，它已经成为我们生活中不可或缺的一部分了，因为我们无法想象到从今天开始，停电一周，我们的生活将会遇到多大的困难；电是供我们使用的，可使用的背后却都是千万个电力行业的人员辛辛苦苦的设计、建设、运行以及维修，每一个城市的开发或者每一个地区需要供电，都离不开电力人员对变电站的设计，变电站的设计需要对各方面因素综合考量，特别是对于我们这些经验不足的学生，千万马虎不得，我们根据要求需要做一个110kv的变电站的一次设计，也就是要综合考虑变电站的性质，充分达到安全可靠运行，然后结合具体情况分析，尽量节省成本经济运行，设计出了110kv/35kv/10kv三个电压等级的变电站，最后通过负荷计算确定了它的容量和台数。变电站的设计需要综合考虑到负荷容量、过压过载、短路电流、最大工作持续电流、继电保护以及自动装置的应用。同时对防雷接地补偿装置进行了简要的分析和计算,根据需求我在篇尾附录了三张电气CAD图纸。关键词:变电站的设计、主要的电线、设备选择和灵敏度校验。 Abstract Since our scientists found that the existence of electricity, we havent stopped for electrical exploration, for us, weve just does not meet the electricity for lighting use, the continuous development of science and technology, new technology products are also arises at the historic moment, it has become an indispensable part of our life, because we cant imagine starting today, without power for a week, our life will be much difficulties;Electricity is for us to use, can use but are behind thousands of electric power industry personnel of painstaking design, construction, operation and maintenance, the development of every city or each region need power supply, cannot leave the electricity personnel to the design of substation, substation design need comprehensive consideration of factors, especially for those of us who experienced students, cannot be bothered, do we need to do according to the requirement of a 110 kv substation design, according to the reference design of 110 kv substation, satisfy the requirement of its safety, economy and reliability, identified 110 kv, 35 kv and 10 kv voltage grade three main wiring forms, and then its capacity was determined by the load calculation and the Numbers.The substation design should be considered to load capacity, over voltage, overload, short circuit current, maximum working current, the application of relay protection and automatic device.Grounding compensating device at the same time has ca