Optical fiber bragg grating transmission line on-line monitoring device and method

A technology for power transmission lines and monitoring devices, which is applied to measurement devices, optical devices, and measurement of force by measuring changes in optical properties of materials when they are stressed, can solve problems such as poor anti-interference ability, low reliability, and low sensitivity. question

Active Publication Date: 2014-05-28
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the process of realizing the present invention, the inventor found that there are at least defects such as low sensitivity, low reliability, short service life and poor anti-interference ability in the prior art

Method used

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  • Optical fiber bragg grating transmission line on-line monitoring device and method
  • Optical fiber bragg grating transmission line on-line monitoring device and method
  • Optical fiber bragg grating transmission line on-line monitoring device and method

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Embodiment Construction

[0050] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0051] Fiber Bragg grating is a narrow-band reflection filter passive device with excellent performance. The fiber Bragg grating has the characteristics of small temperature deformation, strong deformation ability, and accurate measurement data. For example, the fiber Bragg grating can be used in transmission line monitoring. Will greatly improve the level of online monitoring.

[0052] Through the study of Bragg grating strain gauges, such as figure 1 , figure 2 , image 3 and Figure 4 As shown, a fiber bragg grating transmission line online monitoring device and method are provided. The optical fiber bragg grating transmission line online monitoring device a...

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Abstract

The invention discloses an optical fiber bragg grating transmission line on-line monitoring device and method. The device comprises a wire which needs inner span observation after line hanging of a transmission line is completed, a first optical fiber bragg grating, a second optical fiber bragg grating, and an additional load. The first optical fiber bragg grating and the second optical fiber bragg grating are respectively affixed on both ends of the wire, and the lengths of the gratings are preset lengths. The additional load is hanged at a wire sag, and the weight is preset weight. According to the optical fiber bragg grating transmission line on-line monitoring device and method, which are provided by the invention, the defects of low sensitivity, low reliability, short service life and poor anti-interference ability in the prior art can be overcome, so as to realize the advantages of high sensitivity, high reliability, long service life and strong anti-interference ability.

Description

technical field [0001] The invention relates to the field of optical fiber grating power transmission technology, in particular to an on-line monitoring device and method for an optical fiber bragg grating power transmission line. Background technique [0002] With the development of my country's economy and the uneven distribution of energy, UHV and cross-regional power transmission have become the main trend of power grid development. Enterprises will bring losses, and more importantly, it will have a serious impact on the national economy, the entire social stability and people's lives. Therefore, it is particularly important to use transmission line online monitoring technology to predict possible problems in transmission lines in advance. [0003] Due to the large amplitude of ice-coated conductor galloping and wind load, it can lead to serious accidents such as phase-to-phase flashover, hardware damage, tripping and power failure, pulling down pole towers, and wire brea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/24G01B11/02G01B11/24
Inventor 范雪峰付兵彬雒亿平杨晶邓永婕朱文化夏懿徐昊亮魏勇孙志宏韩建锋薛国斌梁魁万小花李麟鹤李玉科
Owner STATE GRID CORP OF CHINA
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