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A Feature Extraction Method of Electric Tracking State on the Surface of Ethylene Propylene Rubber for Mine Cable Insulation

An extraction method and technology of ethylene-propylene rubber, applied in the direction of measuring current/voltage, measuring resistance/reactance/impedance, measuring electricity, etc., can solve the problems of lack of state evaluation samples, insufficient data, etc., to achieve reliable characterization methods and ensure accuracy sexual effect

Active Publication Date: 2018-12-28
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0007] It can be seen from the existing research that the existing research methods mainly focus on the damage mechanism of electric tracking, the environmental conditions of the insulation and the influence of adding nanoparticles on the electric tracking resistance of insulating materials; Special research on the evaluation method of the surface tracking state; for the surface tracking evaluation of ethylene-propylene rubber for mining cable insulation, there is a lack of state evaluation samples, and the data is not rich

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  • A Feature Extraction Method of Electric Tracking State on the Surface of Ethylene Propylene Rubber for Mine Cable Insulation
  • A Feature Extraction Method of Electric Tracking State on the Surface of Ethylene Propylene Rubber for Mine Cable Insulation
  • A Feature Extraction Method of Electric Tracking State on the Surface of Ethylene Propylene Rubber for Mine Cable Insulation

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Embodiment Construction

[0061] In order to facilitate the understanding of the purpose, technical solutions and advantages of the present invention, the specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0062] The present invention takes the ethylene-propylene rubber insulating material for 10kV mine cables as the main research object, and describes in detail the specific implementation of the method for extracting surface electric trace state features based on insulation resistance in conjunction with the accompanying drawings.

[0063] Preparation of artificial defects on the surface of ethylene-propylene rubber for mine cables: Based on IEC60587, because ethylene-propylene rubber has excellent electrical tracking resistance, in the test, hexadecyl trimethyl brom...

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Abstract

The invention provides a mining cable insulation applied ethylene propylene rubber surface electric trace state characteristics extracting method, which comprises the selecting and extracting method for surface electric trace characteristics. The selecting of the surface electric trace characteristic is derived from the insulation resistance signal, the polarizing-depolarizing current signal and the recovery voltage signal, and the combination of the characteristic quantities extracted from the three state signals can be used as the ethylene propylene rubber surface electric trace state characteristics. The extraction method for the surface electric trace characteristics is a time domain feature quantity extraction method. The method mainly extracts the starting point, the stable point, the initial gradient and the inflection point of a signal waveform. According to the invention, reflected by the mining cable insulation applied ethylene propylene rubber surface electric trace state, it is possible to diagnose the state of the electric trace and provide judging basis for the lifespan of a mining cable.

Description

technical field [0001] The invention relates to the field of state monitoring and fault diagnosis of mine electric equipment, in particular to a method for extracting state characteristics of electrical traces on the surface of ethylene-propylene rubber for mine cables based on medium response signals. Background technique [0002] Mine high-voltage cables are one of the main equipment in the coal mine power supply system. Its function is to ensure the continuous and reliable transmission of electric energy, so as to ensure the safety and efficiency of coal mine production. With the continuous improvement of coal mine productivity, the voltage level of the power supply system under the mine has also been increased accordingly, with 10kV as the main one. For 10kV high-voltage cables, ethylene-propylene rubber insulated cables are widely used as power supply cables for ships and coal mines because of their excellent water vapor resistance, weather resistance and flexibility. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/02G01R19/00G01R31/12
CPCG01R19/00G01R27/025G01R31/1272
Inventor 雷志鹏冯晨宋建成
Owner TAIYUAN UNIV OF TECH
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