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Device for analysis gas in insulating oil and method for analysis gas in insulating oil

A technology for gas analysis and insulating oil, which is used in material inspection products, material resistance, etc., and can solve the problems of inconsistent sensor output, inability to detect the concentration of methane gas components, and lack of measurement reproducibility.

Active Publication Date: 2007-11-21
FUJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The gas detection methods described in Patent Document 2 and Patent Document 3 also use semiconductor sensors to measure only gas in insulating oil, but the sensor output is still not constant and measurement reproducibility cannot be obtained.
[0010] In addition, although the gas detection methods of Patent Document 2 and Patent Document 3 use a semiconductor sensor with gas selectivity to obtain the gas concentration, the semiconductor sensor with gas selectivity is limited to the detection of hydrogen, carbon monoxide, and acetylene. Cannot detect the concentration of each gas component of methane, ethane, and ethylene

Method used

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  • Device for analysis gas in insulating oil and method for analysis gas in insulating oil
  • Device for analysis gas in insulating oil and method for analysis gas in insulating oil
  • Device for analysis gas in insulating oil and method for analysis gas in insulating oil

Examples

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Embodiment 1

[0036] As the first embodiment of the present invention, Fig. 1 shows the composition of a gas analysis device 20 in insulating oil installed in an insulating oil-immersed transformer according to an embodiment of the present invention, and is installed on a transformer with internal sealing or built-in insulating oil Type of gas analysis device in insulating oil. The gas analysis device in insulating oil provided in the insulating oil-immersed transformer of this embodiment analyzes the gas in oil for hydrogen, carbon monoxide, acetylene, ethylene, methane, and ethane.

[0037] In FIG. 1 , an insulating oil-immersed transformer 1 is filled with insulating oil 2 . The gas analysis device 20 in insulating oil is provided with the gas extractor 3 communicating with the insulating oil-immersed transformer 1 through the piping 25A and the piping 25B, and the insulating oil 2 flows in and out from the insulating oil-immersed transformer 1. This gas extractor 3 is used. The gas gen...

Embodiment 2

[0140] As the second embodiment of the present invention, Fig. 7 shows the structure of a gas analysis device in insulating oil as another embodiment of the present invention, and it is a mobile gas analysis in insulating oil corresponding to the equipment sealed with insulating oil inside device. The gas analysis device in insulating oil of this embodiment analyzes hydrogen and acetylene for gas in insulating oil.

[0141] The gas analysis device 30 in insulating oil of the present embodiment shown in FIG. 7 has the same basic structure as that of the first embodiment shown in FIGS. The different sections are explained.

[0142] In FIG. 7 , the mobile gas-in-oil analysis device is filled with insulating oil 2 inside the equipment to be analyzed, which is not necessarily shown in the gas-in-oil analysis. The gas analysis device 30 in insulating oil is equipped with an insulating oil injector 501, and by providing a gas extractor 3 communicating with the insulating oil inject...

Embodiment 3

[0190] As a third embodiment of the present invention, a monitoring system for an insulating oil-filled transformer that monitors a plurality of oil-filled transformers together and analyzes and monitors gas in insulating oil enclosed in the insulating oil-filled transformer will be described.

[0191] FIG. 12 shows an example of a monitoring system in the case of monitoring a plurality of insulating oil-immersed transformers 1 together. The gas-in-oil analysis devices 401 , 402 , 403 with communication devices and the central monitoring device 420 can communicate through the telephone circuit 430 , the mobile phone circuit 450 and / or wireless 440 .

[0192] Each of the gas-in-oil analyzers 401, 402, and 403 with a communication device is provided with a plurality of sets of oil-immersed transformers 1, and the oil of various gases contained in the insulating oil 2 sealed in the oil-immersed transformer 1 is collected and analyzed. Gas analysis devices 20 and 30 in oil, and mo...

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Abstract

The invention provides a device for analysis gas which can utilize the semiconductor sensor to detect various gas strengths with high reproducibility. The device for analysis gas comprises: a gas extractor that takes out the oil from the device; a gas test section of many semiconductor sensors that detects the various gas strengths of many gas compositions gathered from the oil; a model gas supply system for supplying the various gas strengths of many gas compositions gathered from the oil by the gas extractor to the gas test section; a standard gas supply system for supplying the standard gas using the detection value of the semiconductor sensor as the standard to the gas test section; a switch supplying mechanism for switching the model gas supply system and the standard gas supply system and supplying the device for analysis gas; and an arithmetic device for calculating the gas strengths of many gas compositions dissolved in the oil based on various detection values of the model gas and the standard gas detected by many semiconductor sensors of the gas test section.

Description

technical field [0001] The invention relates to a device for analyzing gas in insulating oil of equipment such as a transformer with insulating oil built in, and a method for analyzing gas in insulating oil of equipment such as a transformer with built-in insulating oil. Background technique [0002] As one of the prior art related to the gas analysis device in the insulating oil of the oil of the transformer of the equipment that encloses or contains oil, in Japanese Patent Application Laid-Open No. 59-160745, the following technology is disclosed: by using a gas-permeable material to separate the insulation The gas in the oil is detected by using several semiconductor sensors that react the separated gas with a variety of gases, and the gas Concentration solution, so as to obtain the concentration of hydrogen, carbon monoxide, carbon dioxide, methane, ethane, ethylene, and acetylene in the gas in the oil. [0003] In addition, as one of the prior art related to a gas anal...

Claims

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Application Information

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IPC IPC(8): G01N27/12G01N33/28
Inventor 高桥克仁八田恭典小出英延藤井和美
Owner FUJI ELECTRIC CO LTD
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