文档介绍：摘要
变电站是电网中的重要节点,担负着变换电压等级、汇集电流、分配电能、控制电能的流向和调整电压的功能。智能变电站是针对变电站的安全、可靠运行而建立起来的,基于微电子技术、信息技术和计算机技术的一种新型变电站。随着电子式互感器,智能高压电器、高速网络通信技术等的发展,能够为变电站提供更高层次的可靠、高效、稳定、开放的智能变电站系统应运而生。本次设计针对智能变电站进行了相关设备选型、综合保护功能的设置以及对通信系统作了一些研究。选型方面主要根据额定值选择并且校验。保护功能主要有变压器内部外部的各类短路、过流及不正常运行的整定计算;继电保护部分主要是针对变压器的保护,重点介绍变压器的主保护和后备保护。通信部分主要介绍RS-485串行口标准和远动技术的应用。变电站运行的各状态量被变送器采集输送到总线系统后,都要根据远动通信规约转换成对应的信息,才能被数据采集系统识别。
关键词:变电站;设备选型;继电保护;远动技术
Abstract
Substation is a important node in work, it shoulders the transformation of voltage, current’s collection, distribution of electricity, control of power flow and adjust voltage. Smart substation aims to operate reliablly and establish a new mode of micro-electronics technology, information technology puter technology. With the development of electronic transformer, the space of intelligent high-voltage electrical appliances and high munication technology,could provide smart substation system require higher level of reliability, efficiency and stablity. The smart substation rely protection function relate to equipment selection, configuration and munication system. Selection of main ratings and calibration, the main functions of internal and external protection of transformer short circuit, over-current and various kinds of abnormal protection is mainly for transformer protection introducing the main transformer protection and reserve protection. Application munication part mainly introduces the RS-485 serial standards and telecontrol technology, all these need munication protocol of intelligent substation, converted into the corresponding information, can be data acquisition system identification.
Key words:substation;equipment selection;relay protection;remote control technology
目录
摘要 I
Abstract II
第一章引言 1
智能变电站的概念 1
智能变电站建立的背景和意义 1
智能变电站相关技术的发展 1
智能变电站的主要作用与功能 2
智能变电站的一些基本概念 3
智能变电站的体系构架 3
第二章智能变电站主要设备选型 4
变压器的选择 4
高压断路器和隔离开关的选择 4
110kV断路器选择及校验 5
35kV断路器选择及校验 6
10kV断路器