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Power grid oil-immersed transformer vibration monitoring device based on optical fiber sensing

An oil-immersed transformer and optical fiber sensing technology, which is applied in the direction of transformer testing, measuring devices, instruments, etc., can solve the problems of poor accuracy, anti-interference and abnormal vibration source positioning ability, and achieve good vibration transmission effect and improve vibration Sensing accuracy, strong anti-interference effect

Active Publication Date: 2021-09-03
河北地质大学
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Problems solved by technology

[0003] The embodiment of the present invention provides a power grid oil-immersed transformer vibration monitoring device based on optical fiber sensing, which aims to solve the problems of current oil-immersed transformer vibration monitoring accuracy, anti-interference, and poor ability to locate abnormal vibration sources

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  • Power grid oil-immersed transformer vibration monitoring device based on optical fiber sensing
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  • Power grid oil-immersed transformer vibration monitoring device based on optical fiber sensing

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[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] Please also refer to figure 1 and figure 2 Now, the vibration monitoring device for power grid oil-immersed transformer based on optical fiber sensing provided by the present invention will be described. The power grid oil-immersed transformer vibration monitoring device based on optical fiber sensing includes two insulating rods 1, an oil-resistant single-core optical cable 2, two circulators 3, two lasers 4, two photodetectors 5, and a computer 6 One of the insulating rods 1 is used for bonding and fixing on the iron core or winding 7 of the transformer...

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Abstract

The invention provides a power grid oil-immersed transformer vibration monitoring device based on optical fiber sensing. The power grid oil-immersed transformer vibration monitoring device comprises two insulating rods, an oil-resistant single-core optical cable, two circulators, two lasers, two photoelectric detectors and a computer, wherein one insulating rod is used for being bonded and fixed on an iron core or a winding of a transformer, and the other insulating rod is used for being bonded and fixed on the inner wall of an oil tank; the oil-resistant single-core optical cable is provided with two vibration sensing sections which are tightly wound on the two insulating rods respectively, wherein the middle port of one circulator is connected with one end of the oil-resistant single-core optical cable, and the middle port of the other circulator is connected with the other end of the oil-resistant single-core optical cable; the two lasers are respectively connected with the input ports of the two circulators; the two photoelectric detectors are respectively connected with the output ports of the two circulators; and the computer is electrically connected with the two photoelectric detectors respectively. The power grid oil-immersed transformer vibration monitoring device based on optical fiber sensing is high in vibration monitoring and positioning accuracy and good in anti-interference performance.

Description

technical field [0001] The invention belongs to the technical field of transformer vibration monitoring, and in particular relates to a vibration monitoring device for power grid oil-immersed transformers based on optical fiber sensing. Background technique [0002] Power transformer is an important electrical equipment in the power grid system. While the power system is developing towards ultra-high voltage, large power grid, large capacity, and automation, it is extremely important to improve the operation reliability of the most critical power transformer in the power system. Due to the strong electromagnetic interference in the transformer installation environment, most of the vibration monitoring is carried out by pasting acceleration sensors on the transformer body, and a few use optical fiber vibration sensing to detect the transformer core or winding for vibration monitoring. However, due to the vibration caused by the transformer There are many factors, mainly the v...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/62G01H9/00
CPCG01R31/62G01H9/004
Inventor 郑一博张磊王远刘强梁萍李思勉王广祥
Owner 河北地质大学
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