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An optical fiber temperature measurement system applied to power system

An optical fiber temperature measurement and power system technology, which is used in thermometers, thermometers, and heat measurement with physical/chemical changes. The effect of low, reduced requirements

Active Publication Date: 2022-03-11
苏州工业园区韵光电子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason why the optical fiber-based temperature measurement system is bulky and costly is that it consists of three bulky and expensive core optical modules: broadband flat light source module, etalon module with calibration function, scanning Optical wavelength tunable optical filter module

Method used

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  • An optical fiber temperature measurement system applied to power system
  • An optical fiber temperature measurement system applied to power system
  • An optical fiber temperature measurement system applied to power system

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] like Figure 1-Figure 8 As shown, an optical fiber temperature measurement system applied to a power system includes a light source module and a coupler connected through a single-mode optical fiber, and the coupler is also connected with a tunable optical filter module, an etalon module and a sensor probe , the light source module does not need the characteristic of flat spectrum that is necessary for the usual optical fiber temperature measurement system. The value is called the optical rejection ratio) characteristic of the adjustable optical filter, the optical rejection ratio of the adjustable optical filter module is 45dB-60dB, which is 5 to 15dB larger than the adjustable optical filter in the usual optical fiber temperature measurement system, Therefore, the spectrum corresponding to the tested probe can be selected from the uneven spectrum, reducing th...

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Abstract

The invention discloses an optical fiber temperature measurement system applied to a power system, comprising a light source module and a coupler connected through a single-mode optical fiber, and the coupler is also connected with an adjustable optical filter module, an etalon module and a sensor Probe, the light source module does not need the characteristic of flat spectrum that is necessary for the usual optical fiber temperature measurement system, and the light suppression ratio of the adjustable optical filter module is 45dB‑60dB, so that the tested light can be selected from the uneven spectrum The spectrum corresponding to the probe can reduce the crosstalk between the high-power spectral region and the low-power spectral region caused by the uneven spectrum; the output end of the light source module is also connected with a logarithmic amplifier module to further reduce the influence of the uneven spectrum.

Description

technical field [0001] The invention relates to an optical fiber temperature measuring system applied to a power system, and belongs to the technical field of optical fiber temperature sensing in the power system. Background technique [0002] The power system has a huge demand for temperature and stress sensing, which is the most demanding sensor besides current and voltage. These applications include temperature monitoring of switch heads inside switchgear, temperature monitoring of windings inside transformers, and high-voltage or high-current cable joints. temperature monitoring etc. Three types of high, medium and low voltage power equipment plus cable joints, the annual market demand for temperature measurement systems is nearly 10 million sets. [0003] In the field of power systems, in addition to temperature measurement systems based on light, there are also temperature measurement systems based on electrical platforms. Electrically-based sensors include many type...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/3206G01K11/32
CPCG01K11/3206
Inventor 韩迺骞
Owner 苏州工业园区韵光电子科技有限公司