Cable accessory silicone rubber aging diagnosis method, system and device
A technology of cable accessories and diagnostic methods, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve problems such as damage to the silicone rubber of cable accessories, and achieve the effect of non-destructive evaluation
Inactive Publication Date: 2020-04-14
GUANGDONG POWER GRID CO LTD +1
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Problems solved by technology
[0004] The invention provides a method, system and equipment for diagnosing the aging of silicone rubber of cable accessories, which solves the technical problem of destroying the silicone rubber of cable accessories in the prior art when performing aging detection of silicone rubber of cable accessories
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[0036] Embodiments of the present invention provide a method, system and equipment for diagnosing the aging of silicone rubber of cable accessories, which are used to solve the technical problem of destroying the silicone rubber of cable accessories in the prior art when performing aging detection of silicone rubber of cable accessories.
[0037] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. ...
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The invention discloses a cable accessory silicone rubber aging diagnosis method, system and device. The method comprises the following steps: carrying out ultrasonic detection on cable accessory silicone rubber by adopting a pulse echo method; collecting an ultrasonic signal reflected by the cable accessory silicone rubber, and preprocessing the ultrasonic signal; intercepting a bottom surface wave B from the preprocessed ultrasonic signal, and calculating and analyzing the bottom surface wave B to obtain an aging degree parameter pad; and judging the aging condition of the cable accessory silicone rubber according to the aging degree parameter pad. According to the embodiment of the invention, the cable accessory silicone rubber is subjected to aging diagnosis through ultrasonic waves; the aging degree parameter pad can be obtained through ultrasonic detection, a sample does not need to be prepared again for dielectric parameter (relative dielectric parameter and breakdown strength)testing, testing can be carried out under the condition that the integrity of the cable accessory rubber part is guaranteed, and therefore nondestructive evaluation of the cable accessory silicone rubber is achieved.
Description
technical field [0001] The invention relates to the technical field of cable diagnosis, in particular to a method, system and equipment for diagnosing the aging of silicone rubber in cable accessories. Background technique [0002] With the vigorous development of power cables, new silicone rubber insulating materials can be widely used in the field of extra-high voltage cable accessories insulation due to their excellent electromechanical and thermal properties. However, insulation failures occur from time to time and become the weak link of cable transmission lines. High-voltage cable accessories made of silicone rubber have better performance. Compared with other raw materials, they have many advantages such as low hardness and strong aging resistance, so as to ensure the smooth operation of high-voltage power transmission projects. However, the silicone rubber of the cable accessories will inevitably be aged. In the prior art, the detection of the aging of the silicone r...
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IPC IPC(8): G01R31/00G01N29/44
CPCG01N29/44G01N2291/0235G01N2291/02863G01R31/003
Inventor 余欣聂章翔于是乎杨贤吕鸿黄振魏俊涛
Owner GUANGDONG POWER GRID CO LTD