Method for intelligently diagnosing thermal defects of high-voltage transmission line based on infrared image

Abstract

The invention relates to a method for intelligently diagnosing thermal defects of a high-voltage transmission line based on an infrared image, being a method for automatically detecting thermal defects of a transmission line in a shot infrared image in a sports mode. The method comprises the following operating steps of: 1, adopting parts in a clustering recognition line based on line object perception; effectively removing the influence of heating of automobiles running on the ground, ground heat sources and reflecting heat of pole towers in complex natural scenery to thermal defect diagnosis of lines; 2, and adopting a relative temperature difference method to diagnose whether the recognized line part has thermal defects, eliminating the influence of additional temperature rise due to solar radiation, and meanwhile reducing errors due to inaccurate parameters of detected distance, environmental temperature, humidity, wind speed and the like. According to the method, the efficiency of detection for the thermal defects of the transmission line can be effectively increased. The method is effectively applied to inspection business of vehicle-mounted or helicopter transmission lines.

Description

technical field [0001] The invention relates to a method for intelligently detecting thermal defects of high-voltage transmission lines based on infrared thermal images. In particular, it relates to a method for intelligently detecting thermal defects existing in transmission lines from captured infrared images in a moving state, and the method can effectively improve the efficiency of detecting thermal defects of transmission lines. This method can be effectively applied to vehicle or helicopter transmission line inspection business. Background technique [0002] The high-voltage transmission line is the artery of the power system. Its operating status directly determines the safety of the power system and the operation of the national economy. Infrared detection has the characteristics of long-distance, no power failure, no contact, and no disassembly. Thermal defects provide an advanced means for power system line condition monitoring. [0003] Infrared thermal imaging ...

AI Technical Summary

Problems solved by technology

Absolute temperature alarm limit temperature rise method: A temperature threshold is specified according to the wire type and load current. If the temperature exceeds this threshold, there may be thermal defects. Since the environment has a great influence on the measured object, such as the temperature rise caused by solar radiation, this method method is unreliable and inaccurate

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