Electric Power Science & Research Institute of State Grid Tianjin Electric Power Company

State Grid Tianjin Electric Power Company

Xiaoguang Wang

Chi Zhang

Wei Fan

Longji Li

Chun He

Lei Yang

Lin Li

Qinghua Tang

Songyuan Li

Shengchen Fang

Minghui Duan

Yang Yu

Haoming Wang

Pengxian Song

Chunhui Zhang

Fei Lu

Yongfu Wang

Weibo Li

Xuliang Zhu

Yuyan Man

Qingfeng Wen

Xiaoguang Xi

The present disclosure provides a defect detection method and apparatus for a cushion layer of a cable, a device, and a storage medium. The method includes: obtaining specification parameters of a corrugated sheath of a to-be-detected cable, calculating a first volume of a cushion layer without deformation and a second volume of a deformed portion of the cushion layer when the cushion layer is deformed under stress, and calculating a stressed-state deformation ratio of the cushion layer based on the first volume and the second volume; obtaining a voltage, a current, an electrode area, an electrode distance, and an initial electrode distance of the cushion layer when the stressed-state deformation ratio is reached, and calculating volume resistivity of the cushion layer; and comparing the volume resistivity with a preset evaluation parameter to obtain a defect detection result of the cushion layer.

Defect detection method and apparatus for cushion layer of cable, device, and storage medium

Provided is a method for determining types of ice-and-snow cover. The method includes: determining typical RGB component values of typical types of ice-and-snow cover, establishing a one-to-one corresponding relation between the typical types of ice-and-snow cover and the typical RGB component values, and establishing a database of typical types of ice-and-snow cover; and extracting RGB values of an ice-and-snow covering point from an ice-and-snow cover image of a measurement area, comparing RGB component values of the ice-and-snow covering point with typical RGB component values in the database of typical types of ice-and-snow cover, and determining the type of ice-and-snow cover of the measurement area according to a comparison result.

Method and device for determining types of ice-and-snow cover

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Tianjin, China

Xiaoguang Wang