某冶金机械修造厂总降压变电所及配电系统设计

(此文档为 word 格式,下载后您可任意编辑修改!) 本科毕业设计说明书 某冶金机械修造厂总降压变电所及配电系统设计 THE DESIGN OF METALLURGICAL MACHINERY REPAIR YARD, STEP-DOWN SUBSTATION AND DISTRIBUTION SYSTEM 学院(部) : 电气与信息工程学院 专业班级: 学生姓名: 指导教师: 电气 08-5 班 周 波 李红月 讲师 2012 年 6月 1日 某冶金机械修造厂总降压变电所及配电系统设计 摘要 本文详细介绍了某煤矿地面 35kV 变电所的设计。文中对该变电所的负荷计 算与变压器的选择、供电系统的拟定与短路计算、变电所电器设备的选择、继 电保护方案的拟定与整定以及变电所的防雷与接地皆有详细的说明。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、电流互感器、电压互 感器等的选择和校验作了详细的说明和分析。 本次设计的内容紧密结合实际,通过查找大量相关资料,设计出符合当前 要求的变电所。设计中除采用了一些固定方式的保护和常规保护,通过电力监 控综合自动化系统,可以使变电站内值班人员或调度中心的人员及时掌握变电 所的运行情况,直接对设备进行操作,及时了解故障情况,并迅速进行处理, 达到供电系统的管理科学化、规范化、并且还可以做到与其他自动化系统互换 数据,充分发挥整体优势,进行全系统的信息综合管理。 在本次设计中,得到了学校老师、同学的耐心指导和大量帮助,在此对他 们表示衷心的感谢和崇高的敬意。 关键词: 短路电流计算 继电保护 断路器 THE DESIGN OF METALLURGICAL MACHINERY REPAIR YARD, STEP-DOWN SUBSTATION AND DISTRIBUTION SYSTEM ABSTRACT This paper introduces soms coal mine 35kV substation design ground. In this paper, the load calculation and transformer substation of choice, power supply system with short circuit calculation, substation worked electical, relay protection scheme with setting and worked the lightning protection and grounding substation is detailed instructions. It also discusses the choice of main wiring, high pressure equipment and all kinds of the protection of relay, the calculation of load, short current and so on in detail, especially, the choice of main wiring, transformer and some electric equipment such as circuit breaker, current and Voltage sensor. It shows main wiring of substation, the distribution of plane and some protection equipment of The design not only adopts some stable-form and general protections but also adopts PC protection. The synthetical automation system of electric power supervision, which can make workers on duty control the situation of substation timely, operate the equipments directly, know the breakdown and deal with it without delay, so that the system of power supply is scientific and standard in management. What’s more, it can exchange data with other automatic systems and give full play to whole advantage in order to manage information in all systems as a whole. KEYWORD: the calculation of short current , the protection of relay,circuit breaker 目录 摘要 ............................................................................................................................... I ABSTRACT ...................................................................................................................... II 1 绪论 ................................

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