东北特钢4号变电所电气部分设计

论文编号:ZD315  论文字数:17444,页数:53  有开题报告和中期检查

内容摘要
本设计共有四部分：第一部分为设计任务书；第二部分毕业设计（论文）说明及计算书；第三部分为变电站的其他规划；第四部分为设计图纸。
 此次设计的是一个降压变电所，有三个电压等级，主变容量为2X31.5MVA。110KV主接线为双母线、35KV和10KV主接线均为单母分段 ，本次设计中进行了主接线的方案论证、短路电流计算、主要电气设备的选择有断路器、隔离开关、母线、PT、CT等的选择及校验。
在这次设计中得到了 老师的大力帮助和支持。在此表示衷心的感谢，由于本人水平有限，本设计中难免有错误和不足之处，希望各位教师和同学批语指正。

Abstract
The design is made up of four parts: part one, the design specification; part two, the prospectus of the design and the calculations of the design; part three,construction of power substation; part four, the design drawing.
The design concerns a step-down substation of three voltages with the main capacity of 2X31.5MVA. Its main line of 110KV is a two-way bus, and the other two of 35KV and 10KV are both one-way bus line sections. As for the design, the thesis has verified its wiring project, calculated its short-circuit current, selected and tested its main electrical equipments like the circuit breaker, the disconnecting switch, the bus line, PT, CT, etc.
I would like to express my thanks to the supervisor, Mr. for his invaluable assistance. Since this is a tentative design, the criticism and advice of all my teachers and schoolmates are welcome for its improvement.

目  录
内容摘要  2
序论  4
第一部分：设计任务书  5
第二部分：设计说明及计算书  8
一、电气主接线的设计及论证  8
二、主变型号选择及技术参数  14
三、短路电流的计算说明  15
四、导体及电气设备的选择及校验  22
五、主要电气设备选择一览表  42
第三部分：变电站的其他规划  44
防雷保护规划  44
参考文献   50
结束语   -51

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