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Method for detecting temperature rise of conductor in GIS tank body online

A technology of internal conductors and conductors, applied in the field of monitoring, to achieve the effect of improving measurement accuracy and safe and reliable detection methods

Active Publication Date: 2014-02-26
STATE GRID CORP OF CHINA +4
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since GIS is a fully enclosed device, there are many technical problems that are still difficult to solve, such as the internal insulation performance of the embedded thermistor or optical fiber sensor, the sealing method of the optical fiber outlet interface, and the service life of the sensor. field application

Method used

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  • Method for detecting temperature rise of conductor in GIS tank body online
  • Method for detecting temperature rise of conductor in GIS tank body online
  • Method for detecting temperature rise of conductor in GIS tank body online

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Embodiment Construction

[0042] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0043] Such as figure 1 , the present invention provides a kind of method for on-line monitoring GIS tank interior conductor temperature rise, comprises the following steps:

[0044] Step 1: Determine the emissivity of the conductor inside the GIS tank;

[0045] Step 2: monitoring the radiation power of the conductor, and calculating the absolute temperature of the conductor;

[0046] Step 3: Correct the absolute temperature of the conductor.

[0047] The emissivity of a conductor is a physical quantity of the radiation ability of a conductor relative to a black body. It is not only related to the material shape, surface roughness, unevenness, etc. of the object, but also related to the direction of the test. If the conductor is a smooth surface, its directionality is more sensitive.

[0048] Described step 1 comprises the following steps:

[0049] Step ...

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Abstract

The invention provides a method for detecting the temperature rise of a conductor in a GIS tank body online. An infrared sensor is used for receiving infrared rays emitted by a temperature rise portion and converting energy of the infrared rays into electrical signals. The electrical signals are converted into the radiant power of the conductor through an amplifier, a signal processing circuit and an AD conversion circuit. By means of the Stephen-Boltzmann law, the absolute temperature of the conductor is calculated out. Finally, the absolute temperature is corrected and the absolute temperature of the conductor can be accurately obtained. If the conductor operates in an electrified mode, the temperature rise of the conductor in the GIS is monitored in real time and accidents are prevented.

Description

technical field [0001] The invention relates to a monitoring method, in particular to a method for online monitoring the temperature rise of a conductor inside a GIS tank body. Background technique [0002] Any object above absolute zero will emit energy in the form of electromagnetic waves. This energy is called radiant energy. The thermal effect of electromagnetic waves in the infrared short-wave part with a wavelength of 0.76-40 μm is the most obvious. Therefore, the infrared sensor can be used to measure the temperature of the temperature rising part by receiving the infrared rays emitted by the heating part. [0003] At present, there are existing methods for GIS temperature measurement in the industry, mainly through the transformation of the local material of the GIS conductor to increase the emissivity of the conductor surface, and then use the infrared sensor to receive infrared measurement of temperature. A live GIS does not apply. [0004] Compared with conventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/10
Inventor 冯英李炜和彦淼王承玉何洁张猛申春红王园园高山杨景刚王国良卢军陈敏
Owner STATE GRID CORP OF CHINA
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