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多属性融合的电力设备红外热特征数字化方法

赵天成 罗吕 杨代勇 刘赫 袁刚 许志浩

赵天成, 罗吕, 杨代勇, 刘赫, 袁刚, 许志浩. 多属性融合的电力设备红外热特征数字化方法[J]. 红外技术, 2021, 43(11): 1097-1103.
引用本文: 赵天成, 罗吕, 杨代勇, 刘赫, 袁刚, 许志浩. 多属性融合的电力设备红外热特征数字化方法[J]. 红外技术, 2021, 43(11): 1097-1103.
ZHAO Tiancheng, LUO Lyu, YANG Daiyong, LIU He, YUAN Gang, XU Zhihao. A Multi-Attribute Fusion Method for Digitizing Infrared Thermal Characteristics of Power Equipment[J]. Infrared Technology , 2021, 43(11): 1097-1103.
Citation: ZHAO Tiancheng, LUO Lyu, YANG Daiyong, LIU He, YUAN Gang, XU Zhihao. A Multi-Attribute Fusion Method for Digitizing Infrared Thermal Characteristics of Power Equipment[J]. Infrared Technology , 2021, 43(11): 1097-1103.

多属性融合的电力设备红外热特征数字化方法

基金项目: 

吉林省电力科学研究院有限公司科技项目资助 KY-GS-20-01-07

详细信息
    作者简介:

    赵天成(1992-),男,吉林长春人,工程师,硕士,研究方向为电力设备故障检测与诊断。E-mail: 583107503@qq.com

    通讯作者:

    许志浩(1988-),男,武汉人,讲师,博士,硕导,研究方向为电力设备智能检测与人工智能应用。E-mail: zhxuhi@whu.edu.cn

  • 中图分类号: TP391.41

A Multi-Attribute Fusion Method for Digitizing Infrared Thermal Characteristics of Power Equipment

  • 摘要: 本文针对电力设备红外图像诊断中热故障特征提取和数字化表达难题,提出一种多属性融合的电力设备红外热特征数字化方法。通过对电力设备热故障特性和相关诊断文件研究分析,在对图像预处理的基础上,提取图像中关键发热区域的热点温度、热点温差、发热面积、位置信息以及热点群聚现象等热属性值,构建多属性信息融合的过热性故障特征值向量,实现热故障特征数字化描述。以断路器为例对该方法进行了验证分析,结果表明,该方法对典型红外故障图谱具有良好的描述能力,可用于后续大量复杂故障样本情况下的设备热故障智能分类与诊断应用中。
  • 图  1  多属性信息融合特征算法流程图

    Figure  1.  Flow chart of multi-attribute information fusion feature algorithm

    图  2  设备局部呈现出的发热故障光斑

    Figure  2.  Locally the equipment presents a hot fault spot

    图  3  故障区域分割及二值化

    Figure  3.  Fault area segmentation and binarization

    图  4  分割出单相设备

    Figure  4.  A single - phase device is segmented

    图  5  形态学处理及基准建立

    Figure  5.  Morphological processing and datum establishment

    图  6  分割故障区域及查找等效热源点

    Figure  6.  Segment the fault area and find the equivalent heat source

    图  7  位置信息示意图

    Figure  7.  Location information schematic diagram

    图  8  像素统计图谱

    Figure  8.  Non-zero grayscale statistical map

    图  9  图 4电力设备区域划分效果

    Figure  9.  The regional division effect of power equipment in fig.4

    图  10  热点温度与发热面积关系图

    Figure  10.  Diagram of hot spot temperature

    表  1  各区域的T1T2对比表

    Table  1.   Comparison table of T1 and T2 for each region

    Value of simulation Measured value
    Phase sequence Area g T1/℃ T3/℃ T2/℃ g T1/℃ T3/℃ T2/℃
    a Superior 53 3.8 2.6 1.2 53 3.8 2.6 1.2
    Centre 70 8.5 5.9 70 8.4 5.8
    Below 48 2.6 0 48 2.6 0
    b Superior 61 6.1 3.8 2.3 62 6.2 3.7 2.5
    Centre 213 46.6 42.8 213 46.5 42.8
    Below 53 3.8 0 52 3.7 0
    c Superior 68 8.0 3.5 4.5 68 7.9 3.5 3.4
    Centre 255 57.8 54.3 255 57.8 54.3
    Below 51 3.5 0 51 3.5 0
    下载: 导出CSV

    表  2  断路器故障等级判断标准

    Table  2.   Criteria for fault grade judgment of circuit breaker

    Failure level Common defect Serious defects Critical defect
    Failure criterion/℃ 0<T<55 55≤T≤80 T>80
    下载: 导出CSV

    表  3  部分电力设备热故障特征提取结果

    Table  3.   Thermal fault feature extraction results of powerequipment

    Amount T1 T2 Si L M
    1 48.5 45 0.008 [1.3,80,38] 2
    42.8 38.3 0.001 [1.3,38.2,21.14]
    2 50.6 28.3 0.009 [0.14,75,24.67] 1
    149 46.5 42.8 0.009 [1.4,-47,51] 2
    150 57.8 54.3 0.01 [1.3,-63,58]
    下载: 导出CSV
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  • 收稿日期:  2021-03-18
  • 修回日期:  2021-06-07
  • 刊出日期:  2021-11-20

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