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Transformer winding temperature measuring device

A technology of transformer windings and temperature measuring devices, applied in measuring devices, thermometers with physical/chemical changes, instruments, etc., can solve the problem that the winding temperature cannot be effectively measured, and achieve the effect of high measurement accuracy

Active Publication Date: 2014-11-12
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the temperature of the inner winding of the transformer cannot be effectively measured, the present invention provides a transformer winding temperature measuring device

Method used

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  • Transformer winding temperature measuring device
  • Transformer winding temperature measuring device
  • Transformer winding temperature measuring device

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Embodiment Construction

[0014] A transformer winding temperature measuring device, comprising an interface board 4 fixed on a transformer box 2, a fiber grating temperature sensor 1 and a fiber grating demodulator 7 embedded between windings 9 in the transformer, and the board surface of the interface board 4 An optical fiber connector 8 is also fixed on the fiber grating temperature sensor 1. The optical fiber connector joint on the end of the fiber grating temperature sensor 1 extends out of the transformer box 2 and is connected to one end of the optical fiber connector 8 on the interface board 4. The fiber grating demodulator 7 passes through the The optical fiber 6 is connected to the other end of the optical fiber connector 8 on the interface board 4 .

[0015] In the aforementioned transformer winding temperature measuring device, a sealing ring 3 is placed between the interface board 4 and the transformer box 2 .

[0016] In the aforementioned transformer winding temperature measuring device,...

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Abstract

The invention relates to measuring equipment for temperature of windings inside a transformer, in particular to a transformer winding temperature measuring device. The device comprises an interface board, fiber bragg grating temperature sensors and a fiber bragg grating demodulation instrument, wherein the interface board is fixed to a transformer box body, and the fiber bragg grating temperature sensors are fixedly embedded between the windings inside the transformer. Optical fiber connectors are fixed to the board surface of the interface board, optical fiber connector joints at the tail ends of the fiber bragg grating temperature sensors extend out of the transformer box body to be connected with one ends of the optical fiber connectors on the interface board, and the fiber bragg grating demodulation instrument is connected with the other ends of the optical fiber connectors on the interface board through optical fibers. The transformer winding temperature measuring device can safely monitor the temperature of the windings on line, is not disturbed by extremely strong electromagnetism inside the transformer, is high in measuring precision, and solves the problem that the temperature of the windings inside the transformer cannot be effectively measured.

Description

technical field [0001] The invention relates to a measuring device for the temperature of a winding inside a transformer, in particular to a temperature measuring device for a winding of a transformer. Background technique [0002] Among the equipment in the power industry, large transformers play an important role in the conversion of voltage and current and power transmission, and its performance directly affects the safe and stable operation of the entire power system. Since the transformer has been in full-load operation for a long time and adopts a fully enclosed structure, it often causes heat in various parts. In many cases, the staff cannot measure some small positions inside the transformer, especially the windings that often heat up. If the transformer is operated for a long time, it will lead to the aging of heating components and directly threaten the safety of the entire power grid; the temperature of the transformer winding determines the service life of the tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/32G01K11/3206
Inventor 韩涛闫俊杰赵磊刘锦江马龙飞徐峰黄芳萍裴长龙张晓东陈长栋徐建贾春杰孔明
Owner STATE GRID CORP OF CHINA
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