Power cable extruded semi-conductive shielding sharp corner detection and evaluation system and method thereof
A power cable and evaluation system technology, applied in complex mathematical operations, instruments, data processing applications, etc., can solve problems such as hidden dangers in cable operation, endangering the safety of the power grid system, and difficult positioning, so as to improve the level of digitalization and improve safety and reliability. Effect
Pending Publication Date: 2021-09-24
ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +2
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Problems solved by technology
The adverse effects of these sharp corners will be exposed gradually over a long period of time, which constitutes a hidden danger in the operation of cables and endangers the safety of the power grid system.
Generally, the defects of the cable accessories are concentrated in the accessories themselves, and the defects of the accessories can be avoided after replacement, but the defects of the sharp corners of the semi-conductive shielding of the cable involve a long range of the cable, and may even be the entire length of the cable, which is difficult to locate and needs to be replaced. very expensive
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[0067] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0068] A power cable extruded semi-conductive shield sharp angle detection and evaluation system, such as figure 1 As shown, it includes the image acquisition and display module, the arc coordinate positioning module, the sharp corner top coordinate positioning module and the evaluation calculation module, the image acquisition and display module, the arc coordinate positioning module, the sharp corner top coordinate positioning module and the evaluation calculation module in sequence connect.
[0069] The image acquisition and display module realizes the acquisition of the radial slice image information of the cable and the function of displaying it to the user, and builds a plane coordinate system on the basis of the acquired image.
[0070] The user specifies the positions of several points on the inner (or outer) arc of the semi-conductive shield, and th...
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The invention relates to a power cable extruded semi-conductive shielding sharp corner detection and evaluation system and method thereof, an evaluation system comprising an image collection and display module, an arc coordinate positioning module, a sharp corner top coordinate positioning module, and an evaluation calculation module is constructed, meanwhile, the circle center and the radius fitted by an arc point set are calculated according to an arc coordinate positioning module, the circle center and the radius fitted by a sharp corner top point set are calculated according to the sharp corner top coordinate positioning module, and the semi-conductive shielding sharp corner is quantitatively evaluated through the evaluation calculation module, so that the evaluation method of the evaluation system is constructed. According to the invention, quantitative detection of the extruded semi-conductive shielding sharp corner of the power cable is realized. Meanwhile, the digitization level of power cable network access detection is improved, the problem of sharp corners existing in semi-conductive shielding cable network access laying is avoided, and the safety and the reliability of a power grid are improved.
Description
technical field [0001] The invention belongs to the technical field of electric equipment operation detection, in particular to a power cable extruded semi-conductive shield sharp corner detection and evaluation system and method thereof. Background technique [0002] Power cable extruded semi-conductive shielding is a semi-conductive shielding layer located on the inner and outer sides of the extruded insulated power cable insulation. Its function is to improve the electric field distribution in the cable insulation and prevent insulation breakdown caused by electric field distortion. According to GB / T 12706 rated voltage 1kV (Um=1.2kV) to 35kV (Um=40.5kV) extruded insulated power cables and accessories, GB / T 11017 rated voltage 110kV (Um=126kV) XLPE insulated power cables and Its accessories, GB / T 18890 rated voltage 220kV (Um=252kV) XLPE insulated power cable and its accessories, it can be seen that the national standard clearly requires that the surface of the semi-cond...
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IPC IPC(8): G06Q10/06G06F17/12G06F17/17G06Q50/06
CPCG06Q10/0639G06F17/12G06F17/17G06Q50/06
Inventor 房晟辰郭博文孙成李维博冯军基宋晓博董艳唯陈刚张弛唐庆华于洋王晓光杨磊王浩鸣徐天石王洋李国
Owner ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO