Method for determining service life of composite insulator based on color difference
A technology for composite insulators and operating life, which is applied in the direction of color/spectral characteristic measurement, measuring devices, instruments, etc., to achieve the effect of effective judgment
Inactive Publication Date: 2014-10-08
STATE GRID CORP OF CHINA +1
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[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a method for judging the operating life of composite insulators based on chromaticity difference, and solve the problem of judging the operating life of composite insulators
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[0021] Embodiments of the present invention are described in further detail below:
[0022] A method for judging the service life of composite insulators based on chromaticity difference is based on the following characteristics of composite insulators: due to the aging phenomenon of composite insulator sheds, there will often be very obvious discoloration, most of the sheds will be Fading and pulverization occur. Therefore, quantitative description of the color change degree of the shed can characterize the color difference of the shed material, thereby characterizing its aging degree. In image processing, RGB color elements are usually used to characterize the color, and the values represented by R, G, and B can uniquely determine the color of the object. Therefore, if the color of the object is regarded as a three-dimensional linear space, you can use R , G, and B are used as a group of bases in the space, and then the color of the object is expressed linearly. Each colo...
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The invention relates to a method for determining the service life of a composite insulator based on color difference. The method is technically characterized by comprising the following steps: collecting a composite insulator umbrella skirt sample; photographing the composite insulator umbrella skirt sample and quantitatively obtaining RGB (Red, Green, Blue) color vectors of the composite insulator umbrella skirt sample; with the RGB color vectors of the inner side of the composite insulator umbrella skirt sample as a base vector, subsequently subtracting the RGB color vector of the upper surface and the RGB color vector of the lower surface of the umbrella skirt sample from the base vector to obtain a differential vector, and representing a color difference value by a modulus of the differential vector; and determining the service life of the composite insulator according to the color difference value. With the adoption of a color difference analyzing method, the color difference between the colors of the upper surface and the lower surface of the composite insulator umbrella skirt and the color of the inner side of the umbrella skirt is calculated and analyzed for determining the service life of the composite insulator material, so that the function of effectively determining the service life of the composite insulator is achieved, and the service life of the composite insulator is further analyzed and evaluated, thereby providing a decision basis for maintaining the condition of a power transmission line.
Description
technical field [0001] The invention belongs to the technical field of composite insulators, in particular to a method for judging the service life of composite insulators based on chromaticity difference. Background technique [0002] Composite insulators play the role of supporting wires and insulation in power systems. With the accumulation of composite insulator operating time, under the combined effects of high-voltage electromagnetic fields and ultraviolet light and other environmental factors, composite insulator sheds will age to varying degrees. Since the shed material of the composite insulator is high-temperature-cured silicone rubber, its main components are organic silicon-oxygen polymer chains and inorganic fillers. With the gradual decrease of the mechanical and electrical properties of the composite insulator, when the aging is too serious to withstand high voltage, the composite insulator will have a flashover breakdown, resulting in a large-scale power outa...
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IPC IPC(8): G01N21/25G01R31/00
Inventor 吴明雷田明辉王永福刘宝成郗晓光满玉岩李隆基
Owner STATE GRID CORP OF CHINA