Discharging strength conversion method based on ultraviolet imaging method

Abstract

The invention provides a discharging strength conversion method based on an ultraviolet imaging method. The invention provides a corresponding conversion method by designing an ultraviolet imaging detection discharging model, analyzing videos and processing a digital image, comprehensively considering a testing distance, an instrument gain and a relation between the discharging strength and ultraviolet imaging pattern quantized data, and analyzing all parameters and data to obtain a corresponding curve. The discharging strength conversion method can effectively guide the sensitivity and the accuracy of a typical defect ultraviolet imaging detection analysis of regional power grid electric transmission and transformation equipment, and provides a reliable testing basis for the discharging strength of the equipment.

Description

technical field [0001] The invention belongs to the technical field of electric power, and in particular relates to a discharge intensity conversion method based on an ultraviolet imaging method. Background technique [0002] Most of the electrical equipment of ultra-high voltage transmission lines and substations are in the atmospheric environment. Under the action of long-term electrical, thermal and mechanical stress, insulation degradation, aging and even damage will inevitably occur. Under certain conditions, the surface of the equipment will appear Discharge phenomenon, but this kind of discharge is generally manifested as weak discharge, and the wavelength of the radiated light wave is mainly distributed in the ultraviolet band (200-400nm), which is difficult for human eyes to directly observe. Conventional detection methods, such as acoustic wave detection and ultra-high frequency methods, are difficult to accurately locate the discharge point. [0003] Using ultrav...

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Problems solved by technology

However, at present, the ultraviolet imager focuses on the actual detection application in my country's power system. There has not been systematic and comprehensive research on the causes of equipment discharge, whether the ultraviolet imaging method can quantify the discharge, and the characteristics of the ultraviolet spectrum of the discharge under different defects.

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