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基于红外图像分析的电力设备热故障检测技术研究

2017-06-12芦竹茂王天正俞华马丽强刘永鑫

现代电子技术 2017年11期

芦竹茂+王天正+俞华+马丽强+刘永鑫

摘 要: 设计基于红外图像分析的电力设备热故障检测系统,该系统由图像采集模块和图像检测模块组成。根据目标设备的形状特征识别热图像中的电力设备,计算设备区域内的最高温度值,并对各种影响因素进行修正后做出诊断,取得了令人满意的结果。在与主动式传感器的电力设备热故障检测法的对比试验中,证明提出的基于红外图像分析的电力设备热故障检测方法在对电力设备热故障区域进行检测时是准确、有效的。

关键词: 输变电设备; 在线监测; 状态诊断; 热故障检测

中图分类号: TN219?34 文献标识码: A 文章编号: 1004?373X(2017)11?0123?04

Research on electrical equipment thermal fault detection technology

based on infrared image analysis

LU Zhumao, WANG Tianzheng, YU Hua, MA Liqiang, LIU Yongxin

(Electric Power Research Institute, State Grid Shanxi Electric Power Company, Taiyuan 030001, China)

Abstract: The electrical equipment thermal fault detection system based on infrared image analysis was designed, which is composed of the image acquisition module and image detection module. The electric equipment in thermal image is recognized according to the shape feature of the target equipment. The maximum temperature in the equipment area is calculated. The various influence factors are corrected for diagnosis, which has obtained the satisfactory result. The comparative test of the proposed method with the electrical equipment thermal fault detection method of active sensor of thermal power equipment fault detection method was performed. It is proved that the electrical equipment thermal fault detection method based on infrared image analysis is accurate and effective to detect the thermal fault area of electrical equipment.

Keywords: power transmission equipment; online monitoring; condition diagnosis; thermal fault detection

0 引 言

為了确保庞大数量的电力设备能够正常可靠地运行,必须对这些设备进行定期和经常性的检查和故障诊断。然而传统的检查方法必须对设备停运,随着设备数量的不断增多,线路需要停运的次数也越来越多,造成巨大的经济损失。

随着技术的发展,红外图像识别技术开始应用于电力设备的过热故障监测中。红外热成像设备用于电力设备故障检测具有灵敏度高、可进行计算分析、检测效率高等特点,其最大优点在于可以对电力设备进行实时在线状态检测和热故障诊断,因此近年来在国内外得到了非常广泛的应用。

1 基于红外图像分析的电力设备热故障检测技术

1.1 系统架构

本文充分利用红外图像分析技术,设计了基于红外图像分析的电力设备热故障检测系统,这一系统主要包括两大模块:一是图像采集模块,负责电力设备红外图像的采集;……

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