毕业设计---校区变电所二次初步设计

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1、 I 中文题目：辽工大葫芦岛校区变电所二次初步设计 外文题目：THE SECONDARY AND PRELIMINARY DESIGN OF SUBSTATION FOR LIAONING TECHNICAL UNIVERCITY IN HULUDAO II 摘要 本文详细介绍了辽宁工程技术大学葫芦岛校区 10kV 总降变电所的设计。文中对主接 线的选择、高压设备的选择、负荷计算、短路电流计算皆有详细的说明。特别对主接线的 选择,变压器的选择,还有一些电气设备如断路器、隔离开关、熔断器等的选择校验作了详 细的说明和分析。设计中采用并联电容器的方法来补偿无功功率，以减少供电系统的电能 损耗和电压

2、损失，同时提高了供电电压的质量。设计中体现了安全、可靠、灵活、经济的 原则。确定了变电所防雷过压保护与接地保护方案。 关键词：主接线选择，短路电流计算,并联电容器； III Abstract This paper mainly introduces the design of 10kV substation of liao ning technical univercity in the city of huludao. It also discusses the choice of main wiring, high pressure equipment and the calculatio

3、n of load, short current and so on in detail, especially, the choice of main wiring, transformer and some electric equipment such as circuit breaker, Isolating switch., Fuse .the design of a parallel connection capacitor approach to compensation without merit power, the electricity supply system to

4、reduce wear and voltage loss, while enhancing the quality of power supply voltage. Design reflects a safe, reliable, flexible and economic principles. Determine the program of lightning to cause over-voltage 0f substation protection and grounding protection Keyword: the choice of main wiring;the calculation of short current; parallel connection capacitor; 目录 0 前言 . 1 1 变电所主接线方式 2 1.1 电气主接线的概述 2 1.2 电气主接线的设计原则和要求. 2 1.3 变电所主变压器的一次侧接线方式 . 4 1.4 变电所变压器二次侧接线方式. 5 2 校区负荷统计 . 8 2.1 负荷统计 . 8 2.2 校区负