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System and method for online monitoring filth of fiber bragg grating transmission line

A technology of Bragg gratings and transmission lines, applied to measuring devices, material analysis through optical means, instruments, etc., can solve problems such as pollution, inability to measure gray density, and measurement results are easily disturbed, and achieve long monitoring distance, The effect of stable performance

Inactive Publication Date: 2014-05-14
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0008] In view of the shortcomings mentioned in the above background technology that the existing on-line monitoring system cannot measure dust density and the measurement results are easily disturbed, the present invention proposes an on-line monitoring system and method for pollution of fiber Bragg grating transmission lines

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  • System and method for online monitoring filth of fiber bragg grating transmission line
  • System and method for online monitoring filth of fiber bragg grating transmission line
  • System and method for online monitoring filth of fiber bragg grating transmission line

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Embodiment Construction

[0056] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0057] In order to overcome the above-mentioned problems existing in the prior art, the present invention adopts the fiber Bragg grating (FBG) to carry out the on-line monitoring of the insulator contamination of the transmission line. Because FBG has many advantages such as anti-electromagnetic interference, stable performance, long monitoring distance, and not affected by light intensity, it is especially suitable for use in strong electromagnetic environments and harsh temperature and humidity environments where insulators are located. However, since the characteristic Bragg wavelength of FBG is only sensitive to temperature and strain, there is currently no way to directly use fiber Bragg grating FBG to measure the...

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Abstract

The invention discloses a system for online monitoring filth of a fiber bragg grating transmission line which belongs to the technical field of online monitoring of power lines. The system comprises a computer, a wavelength demodulating system, a junction box, junction box output optical fiber, a thermometer screen, a first lead-out optical fiber, a second lead-out optical fiber, a fiber bragg grating filth sensor array and a fiber bragg grating compensation sensor, wherein the wavelength demodulating system comprises a solar power generation module and a wireless communication module. According to the system provided by the invention, salt density and ash density are accurately measured so that the system is suitable for being used in a strong electromagnetic environment and a severe temperature and humidity environment of an insulator.

Description

technical field [0001] The invention belongs to the technical field of on-line monitoring of power lines, and in particular relates to an on-line monitoring system and method for contamination of optical fiber Bragg grating transmission lines. Background technique [0002] Since the 1990s, large-scale pollution flashover accidents in power grids have occurred frequently across the country, seriously threatening the safe operation of the power system. The root cause of pollution flashover accidents on transmission lines is that dirty substances are deposited on the surface of the insulator. When it absorbs the moisture in the humid air, the dielectric strength drops sharply, and flashover occurs due to the inability to withstand the working voltage. Reliable detection of pollution level of insulators is helpful for power maintenance personnel to grasp the pollution status of insulators in a timely and accurate manner, which is a very important part of anti-pollution flashover...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/17
Inventor 马国明李成榕穆瑞铎
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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