文档介绍：220kV变电站设计
作者姓名:黎赛华
专业名称:电气工程及其自动化
指导教师:李自成副教授许丽助教
摘要
电力生产过程有别于其他工业生产过程的一个重要特点,就是它的生产、输送、变换、分配、消费的几个环节是在同一个时间内同步瞬间完成。电力生产过程要求供需严格动态平衡,一旦失去平衡生产过程就要受到破坏,甚至造成系统瓦解,无法维持正常生产。随着经济的快速发展,全国乃至全世界凸现缺电局面,如何进一步优化调度,加强电力资源的优化配置,最大限度满足电力需求成为人们探讨的问题之一。
本次220kV变电站的设计包括一次和二次部分,主要内容有主变压器的选择和分析、电气主接线的选择(包括一般单母、单母分段和一般双母的特点分析),关于电气主接线部分的内容是基础部分,主要分析了常用主接线的形式,综合比较各种接线方式的特点。短路电流的计算(等值电路图及各侧短路电流及冲击电流的计算)、主要电气设备的选择(高压断路器、隔离开关、互感器、母线及电力电缆),各侧配电装置的选择、防雷保护及继电保护。在设计过程中,短路电流的计算是重要部分,根据计算出的短路电流进而选择高压开关设备,才能使设备正常运行和短路时可靠接地工作。为了保障运行人员的人身安全,要完善保护装置。与此同时,也要保障设备运行稳定性,需要完善继电保护装置。
关键词:220KV变电站短路电流继电保护
Abstract
The produce of electric power is different from other industrial produce ,whose process of product ,transfer ,change,distribute and consume pleted at the same time .The produce of electric power must keep balance ,or it can’t function normally or even be destroyed. As the development of economy, the problem of being shot of electricity is ing more and more serious. It’s a big problem how to optimize the disposition of electric resource and meet the electric power requirement.
The 220kV substation design includes first and second parts, the main content selection and analysis of the main transformer, electrical main connection options (mon single mother, single mother of segmentation and analysis of the general characteristics of two-parent), on the main electrical terminal part of the content is the foundation part, analyzes the main connection in the form mon prehensive way paring the characteristics of different connection. In the design process, the short circuit current is an important part of the calculation, according to the calculated short-circuit current and then select the high-voltage switching equipment, equipment for normal operation and to make reliable short circuit ground work. In order to protect the personal safety of operating personnel we should improve the protection device. At the same time, we must guarantee the stability of the device, and you need to improve the