Composite insulator ageing photo-thermal radiation detection system based on unmanned aerial vehicle

Abstract

The invention discloses a composite insulator ageing photo-thermal radiation detection system based on an unmanned aerial vehicle. The system comprises an airborne terminal 9 and a ground terminal 14,the airborne terminal comprises an unmanned aerial vehicle body 1, a power module 2, a flight control module 3, a satellite positioning module 4, a cloud deck 5, a photo-thermal radiation detection module 6, an airborne wireless transmission module 7 and an airborne information processing center 8, and the ground terminal comprises a ground wireless transmission module 10, a ground unmanned aerial vehicle control module 11, an image processing and displaying module 12 and a ground information positioning center 13. According to the system, the unmanned aerial vehicle carries the photo-thermalradiation detection module to detect temperature distribution time change or space distribution conditions of a composite insulator after laser radiation, the relationships among thermal conduction characteristics and aging degree of the composite insulator are analyzed, and photo-thermal radiation online remote sensing evaluation of an ageing state of the overhead composite insulator is achieved. The system has the advantages that the method and operation are simple, non-contact, lossless, high-sensitivity, efficient, online remote sensing evaluation of the ageing degree is achieved and thelike.

Description

technical field [0001] The invention relates to the field of electric power, in particular to an unmanned aerial vehicle-based composite insulator aging photothermal radiation detection system. Background technique [0002] Insulators are important components in electrical systems that mechanically connect conductors with different potentials. Composite insulators use high-temperature vulcanized silicone rubber as the outer insulating material, which has the advantages of light weight, good pollution resistance, strong hydrophobicity, high mechanical strength, and convenient maintenance. It is widely used It is the key to ensure electrical performance when used in high-voltage, ultra-high voltage, and ultra-high voltage AC and DC power transmission systems. With the increase of running time, the aging phenomenon of composite insulators occurs, and the main factors leading to aging are light aging, thermal aging, electrical aging, and environmental aging (acid corrosion, poll...

AI Technical Summary

Problems solved by technology

With the increase of running time, the aging phenomenon of composite insulators occurs, and the main factors leading to aging are light aging, heat aging, electrical aging, and environmental aging (acid erosion, pollution, airflow, sand erosion, salt, mechanical stress, etc.) , the aging of the composite insulator will cause the surface of the shed to harden, pulverize, embrittle, crack, and fall off. The essence is that the macromolecular chain (or network structure) of the silicone rubber material breaks chemical bonds and produces low molecular groups, which will reduce the number of insulator strings. The creepage distance will reduce the electrical and mechanical properties sharply. The direct consequence is the loss of hydrophobicity on the surface of the insulator and the deterioration of pollution flashover resistance, which will lead to a decrease in the reliability of the insulation and threaten the safety of the power system.

[0003] At present, the aging evaluation of composite insulators is mainly to test the physical properties, electrical properties, mechanical properties, and material microscopic properties of silicone rubber materials to evaluate their performance. The main evaluation and detection methods include hydrophobicity detection, electrical quantity detection, and optical detection. These methods have realized the effective evaluation of the aging degree of the existing materials of composite insulators, but some methods are seriously affected by subjective factors, some tests are damaged, some cannot be quantitatively tested, some systems are complex, costly, and inefficient, and most of the methods No in-line detection or telemetry

At present, the on-line detection methods of composite insulators are mainly surface observation method and water repellency test method, which mainly adopt manual methods, and inspectors carry equipment to climb up to carry out short-distance electrification operation, conduct surface observation and water spray test on insulators, and then carry out image testing. Collect, and finally process the collected photos to judge the aging level of insulators. This method is time-consuming and laborious, with low detection efficiency, low accuracy, poor safety, and is greatly affected by human factors.

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