文档介绍：摘 要
随着电网运行水平的提高和电力设备状态检修的深入推进,大型变压器、高压电抗器、断路器、避雷器等高压设备在线监测装置得到了广泛应用,这些在线监测装置采集的实时数据成为远程判断高压设备运行情况的重要依据,在线监测装置发挥的作用也得到更多业内外专家的认可。大型变电站通常安装了多套高压设备在线监测装置,不同的在线监测装置拥有独立的数据处理系统, 通常不能建立在一个统一的管理平台上,这也增加了在线监测装置的维护工作量,不利于数据的分析和管理。随着智能电网技术的快速发展,业内逐步形成了以 IEC61850 规约为基础的通讯规约,为在线监测信息管理系统的开发提供了技术基础。
本论文主要工作如下:
(1)设计了变压器油色谱在线监测子系统。通过该子系统,定时对变压器油中溶解气体组分进行检测,通过三比值法等对测试结果进行比较分析,对数值越限、数值异常、数值突变等情况发出告警,对各项指标发展趋势进行分析, 防止变压器突发内部故障,造成设备损坏,影响供电。
(2)设计了 GIS 断路器机械特性、局放在线监测子系统。通过该子系统, 实时了解断路器机械特性和绝缘特性。通过传感器技术和信息处理技术进行在线数据分析和判断,对可能出现的断路器故障进行预警,及时安排故障排查和处理,防止断路器损坏和电网事故。
(3)设计了避雷器在线监测子系统。通过该子系统,实时了解避雷器泄露电流数值变化和避雷器动作情况,掌握避雷器绝缘情况是否良好,及时发出告警信号,对历史数据进行趋势分析,防止突发设备事故。
(4)设计了基于 IEC61850 规约的在线监测信息管理系统的整体方案及实现。采用 IEC61850 规约将多个不同设备的在线监测系统,通过一个统一的后台进行数据处理和分析,实现了实时数据查询、异常告警、月度报表、曲线分析等功能。实现了就地监控主机的信号、数据远传。
关键词: IEC61850 规约,变压器在线监测,断路器在线监测,避雷器在线监测,信息管理系统。
Abstract
With the operation level of the power grid improved and the power equipment condition based maintenance promoted deeply, the on-line monitoring device of high voltage equipments such as transformer, high voltage reactor, circuit breaker, arrester, have been widely applied. The real-time data acquisition in the on-line monitoring device has e an important basis for remote judging the operation of high voltage equipment. The role of the online monitoring device is also obtained by more industry experts. Large substation is usually installed several sets of high voltage equipment online monitoring. The different on-line monitoring device has an independent data processing system, which usually can not be built in an unified management platform. This also increases the workload of maintenance, and is not conducive to data analysis and management. With the rapid development of smart grid technology, insiders gradually formed munication protocol based on the IEC61850 protocol, providing the technical foundation for the development of on-line monitoring information management system.
The main contents are as follows:
Designed a transformer oil