Cable fault point rapid positioning method and device

A cable fault and location method technology, which is applied in the direction of fault location and fault detection according to the conductor type, can solve the problems of high cost, difficulty in training, teaching and inheritance, and difficulty in monitoring, so as to reduce cost and solve the problem of inaccurate distance measurement Effect

Inactive Publication Date: 2021-10-01
海南电网有限责任公司乐东供电局
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Problems solved by technology

Both the acoustic measurement method and the acoustic-magnetic synchronization method require manual monitoring of cable fault sound information. Due to the insensitivity of the human ear to subtle changes in sound intensity, environmental noise interference, and changes in the sound intensity caused by different buried depths of cables, the other

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  • Cable fault point rapid positioning method and device
  • Cable fault point rapid positioning method and device
  • Cable fault point rapid positioning method and device

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Embodiment Construction

[0029] In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. Apparently, the described embodiments are only some embodiments of the present invention, rather than all embodiments of the present invention, and it should be understood that the present invention is not limited by the exemplary embodiments described here. Based on the embodiments of the present invention described in the present invention, all other embodiments obtained by those skilled in the art without creative effort shall fall within the protection scope of the present invention.

[0030] In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced...

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Abstract

The invention provides a cable fault point rapid positioning method and device. The fault point positioning method comprises the steps of collecting a plurality of second sound signals, extracting spectrum characteristic parameters, inputting the spectrum characteristic parameters into a trained sound classification model, and preliminarily judging whether the second sound signals comprise a cable fault sound signal or not; performing noise reduction processing on the second sound signals through a noise reducer, and judging whether the second sound signals after noise reduction processing contain a cable fault sound signal or not; and if the second sound signals after noise reduction processing contain the cable fault sound signal, inputting the frequency spectrum characteristic parameter in the second sound signals into a pre-constructed sound analysis model to obtain an impact function coefficient characteristic, and based on the impact function coefficient characteristic and a pre-constructed sound source positioning model, obtaining the distance between the cable fault sound source and a sound acquisition terminal, and then obtaining the position of the cable fault point.

Description

technical field [0001] The invention relates to the technical field of cable fault location, in particular to a method and device for quickly locating cable fault points. Background technique [0002] Power cables are widely used in urban underground power grids, internal power supply lines of industrial and mining enterprises, and underwater power transmission lines across rivers and seas. Once the cable fails, it will cause power outage losses to the production of enterprises and bring inconvenience to the lives of residents. Therefore, after the cable fails, it is necessary to find the fault as soon as possible and repair it. [0003] Finding cable faults generally requires three steps: fault diagnosis, fault location and fault location. Fault diagnosis is to use multimeter and other tools and equipment to check the connectivity of each phase of the cable and the insulation resistance of the fault phase. The purpose of testing the length of the cable between the points ...

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Application Information

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IPC IPC(8): G01R31/08
CPCG01R31/083
Inventor 冯杰孟春旅温宗仁刘鹏程陈泰谷陈俞伊田泽伟吉训周
Owner 海南电网有限责任公司乐东供电局
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