中国电力 ›› 2014, Vol. 47 ›› Issue (1): 8-12.DOI: 10.11930/j.issn.1004-9649.2014.1.8.4

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SF6气体泄漏光学检测图像特征提取方法研究

耿江海1, 王平1, 田姗2   

  1. 1. 华北电力大学 河北省输变电设备安全防御重点实验室,河北 保定 071003;
    2. 石家庄供电公司,河北 石家庄 050021
  • 收稿日期:2013-11-07 出版日期:2014-01-31 发布日期:2015-12-18
  • 作者简介:耿江海(1980-),男,河北邯郸人,工程师,从事高电压技术的教学及研究工作。E-mail: gengjianghai@163.com
  • 基金资助:
    国家高技术研究发展计划(863计划)资助项目(2012AA050802)

Research on the Image Feature Extraction Method for Laser Detection of SF6 Gas Leakage

GENG Jiang-hai1, WANG Ping1, TIAN Shan2   

  1. 1. Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University,Baoding 071003, China;
    2. Shijiazhuang Power Supply Company, Shijiazhuang 050021, China
  • Received:2013-11-07 Online:2014-01-31 Published:2015-12-18
  • Supported by:
    This work is supported by National High Technology Research and Development Program of China (863 Program) (2012AA050802)

摘要: 为便于对SF6气体泄漏光学成像检测信息的系统化和规范化管理,采用Matrix Laboratory(矩阵实验室,简称Matlab)工具开发了1套SF6气体泄漏光学成像检测综合管理系统。该系统采用图像增强、小波阈值去噪、帧间差分等图像特征提取方法,实现了气体泄漏运动轨迹直观显示、泄漏源定位和泄漏量初判,实现了由人工识别到自动识别的转变,提高了诊断精度及自动化程度。该系统可作为SF6充气设备绝缘状况的辅助评估、设备故障诊断的技术参考,经现场实际应用反映良好。

关键词: SF6气体泄漏, 特征提取, 图像处理, Matlab

Abstract: In order to realize the effective management of detection information, a management system for laser imaging detection of SF6 gas leakage is developed with Matlab language in this paper, which can automatically achieve image enhancement, wavelet threshold denoising and frame differencing and has the function of visual display of leakage movement trajectory, leakage locating and quantification, as a result, realizing the change from artificial recognition to automatic recognition and improving the diagnosis accuracy and automation level. This system can be used for assistant evaluation of the insulating status of the SF6 apparatus and provide technical reference for fault diagnosis for maintenance personnel. Its effectiveness has been proved in practical use.

Key words: SF6 gas leakage, feature extraction, image processing, Matlab

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