高压电力设备放电在线监测系统

On-line discharge monitoring system for high-voltage power equipment

针对高压电力设备局部放电对电力系统安全运行造成重大影响的现状,研究了一套基于嵌入式系统的电力设备紫外内窥系统。该系统主要由紫外内窥探头、嵌入式计算机系统和GPRS模块构成。在嵌入式计算机系统部分介绍了该系统的硬件、软件组成框架和USB摄像头的视频图像采集过程,并在此基础上实现了基于Qtopia的紫外内窥软件程序的编写。利用日盲型的紫外传感器,可以通过检测特定波长的紫外线来正确检测电力设备的放电。通过对电力设备内部特殊环境的研究,将紫外放电检测和视频内窥技术相结合,实现了基于无线GPRS的电力设备紫外放电的远程实时在线监测。实验证明了该系统能够可靠地运行,有效地防止由放电引起的电力事故的发生。

An ultraviolet endoscopic system is researched for the partial discharge of high-voltage power equipment,which consists of the ultraviolet endoscopic probe,embedded computer system and GPRS module.The hardware and software composing of the embedded system,as well as the video image collecting process of the USB camera are introduced.The ultraviolet endoscopic software is developed based on Qtopia.The ultraviolet radiation with specific wavelength is examined by the ultraviolet sensor which is blind to sunlight to detect the partial discharge of power equipment.Based on the internal environment study of power equipment,the system combines the ultraviolet discharge detection technology with the video endoscopic technology and realizes the real-time online GPRS-based monitoring of power equipment.Experiments prove that the system runs reliably and effectively.