Hunan University

State Grid Hubei Electric Power Research Institute

Xiaopo Mao

Jungang Yin

Danhui Hu

Tianru Shi

Zhiqiang Feng

Jianjin Fu

Xueming Zhou

Yaodong Zhang

Zeqi Huang

An infrared zero value diagnosis method and system for a porcelain insulator string are provided. The method includes: collecting an infrared thermogram of a to-be-diagnosed porcelain insulator string; extracting temperature of an iron cap of each insulator in the infrared thermogram of the to-be-diagnosed porcelain insulator string; calculating a temperature gradient value of each insulator in the to-be-diagnosed porcelain insulator string, drawing a temperature gradient distribution curve, and generating a temperature gradient distribution matrix of all to-be-diagnosed porcelain insulator strings; calculating a correlation coefficient of the temperature gradient distribution curve and a correlation coefficient of an average-value curve for each insulator string, and presenting the correlation coefficients in a scatter diagram; and performing comprehensive analysis and determining on the temperature gradient distribution curve, the temperature gradient distribution matrix of the to-be-diagnosed porcelain insulator strings, and the scatter diagram, to complete detection of the to-be-diagnosed porcelain insulator string.

Infrared zero value diagnosis method and system for porcelain insulator string

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Hubei, China

Xiaopo Mao