Image-based overhead cable icing thickness detection method and device

Abstract

The invention discloses an image-based overhead cable icing thickness detection method and device, and the method comprises the following steps: S1, obtaining a non-icing image of an overhead cable, carrying out the detection of the non-icing image of the overhead cable, detecting a non-icing cable, carrying out the edge extraction, calculating the left and right boundaries of the overhead cable, and carrying out the edge extraction of the left and right boundaries of the overhead cable; determining a middle line; step S2, acquiring a current image of the overhead cable, taking the ice-coating-free graph in the step S1 as a reference image, segmenting the current image into a plurality of segmented regions, marking each segmented region as an internal region, an external region and a middle region based on the left and right boundaries and the center line of the cable identified by the reference image, and calculating the boundary of the middle region by taking the internal region as the foreground of the image, the external region as the background and the middle region as an unknown region, thereby obtaining the icing thickness of the overhead cable by using the boundary of the middle region.

Description

Technical field [0001] The present invention relates to the field of power transmission and distribution technology, in particular to an image-based overhead cable icing thickness detection method and apparatus. Background [0002] Most of the existing overhead insulated cables are composed of conductors and insulation layers for long-distance transmission of electricity, the overhead insulated cables of this structure, in the weather conditions of no ice rain and wind and snow, can meet the requirements of safe power transmission, but in actual operation, this overhead insulated cable in the case of heavy snowfall, freezing rain weather, the surface of the cable will form frost, ice and icicles, and even on the surface of the overhead insulated cable to form a thick ice sleeve, increasing the weight of the overhead insulated cable itself, resulting in a broken wire or pole tower break, Circuit interruption, to the people's lives bring inconvenience, but also caused huge losses ...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing power overhead insulated cables are composed of conductors and insulating layers, and are used for long-distance power transmission. The overhead insulated cables with this structure can meet the requirements of safe power transmission under the weather conditions without ice, rain, wind and snow. However, in actual operation, when this type of overhead insulated cable encounters heavy snowfall and freezing rain, frost, ice and icicles will form on the surface of the cable, and even thicker ice will form on the surface of the overhead insulated cable. The cover increases the weight of the overhead insulated cable, which leads to broken wires or poles and towers, and circuit interruption, which brings inconvenience to people's lives and also causes huge losses to the country. It is particularly important to detect the thickness of insulating cables in order to defrost and deice in time and prevent the surface from icing.

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