KR102198520B1 - Sensor module for diagnosis of gas insulation apparatus - Google Patents

Abstract

The present invention relates to a gas sensor module for diagnosing a gas insulated device, and measures CO concentration by reacting with one or more of HF and SO ₂ which are decomposition gases of SF6 to cause a color change and react with CO The electrochemical sensor unit 30 includes one selected or two simultaneously. The present invention has the advantage of being able to easily diagnose the presence or absence of decomposition gas caused by deterioration of other insulating materials or decomposition gas due to partial discharge in a gas insulator by using organic dyes.

Description

Gas sensor module for diagnosis of gas insulated equipment {SENSOR MODULE FOR DIAGNOSIS OF GAS INSULATION APPARATUS}

The present invention relates to a gas sensor module for diagnosing a gas insulated device, and more particularly, to a gas sensor module for diagnosing a gas insulated device capable of simply diagnosing the condition of a facility within a short time in the field when deterioration and abnormal locations in the gas insulated device occur. .

Gas insulated equipment includes a gas insulated transformer and a gas insulated switchgear. In the event of an abnormal location such as partial discharge in the gas insulated device, the internal insulating medium SF6 gas is decomposed to generate decomposition gases such as SO ₂ and HF, or due to deterioration of the solid insulating material or the material of the gas insulated device in the gas insulated device. When decomposition gases such as CO are generated, it is important to enable screening for the condition of the facility primarily in the field.

As the facility management method has recently shifted from the existing TBM (Time Based Management) to CBM (Condition Based Management), there is an urgent need for a protective measure to derive symptoms of failure in advance and take action before the failure occurs. Therefore, in the case of electric power facilities, it is essential to apply an efficient diagnosis method to diagnose a fault location early and to improve the operational reliability of the facility based on this so as to stably supply power.

However, in the case of gas insulated equipment, analysis of SF ₆ gas and decomposed gas of insulating material is essential for determining the abnormal diagnosis of the facility and for life evaluation, but its own standards for analysis of these decomposed gases have not yet been established.

There are three major diagnostic technologies for conventional gas insulated devices.

The first is how to use UHF (Ultra High Frequency) sensor for field diagnosis of partial discharge and coupler sensor for factory test. In the case of these two sensors, the amount of partial discharge can be measured by voltage (mV) or discharge amount (pC), but it is difficult to interchange the result values. In other words, there is a tendency that the field measurement results using the UHF sensor and the factory test results using the coupler sensor do not match. In particular, in the case of the field measurement method, the calibration method of the equipment and the method of converting the measured value into pC units are shown. As it has not been established, it is difficult to evaluate the integrity of the facility through partial discharge diagnosis for gas insulated equipment as a whole.

In addition, since the measurement method using UHF sensor is a measurement equipment optimized for partial discharge measurement of gas insulated switchgear among gas insulated devices, it has a disadvantage that it is not suitable to be applied to gas insulated transformers with different facility structures and measurement standards.

Second, it is a portable analyzer and gas detection tube that are commonly used for diagnosis of gas insulated devices in the field. In the case of these diagnostic devices, they are the devices being used for gas insulated device diagnosis in that the presence or absence of decomposed gas can be identified within a relatively short time on site.

In the case of a portable analyzer, the main purpose is a device that indirectly diagnoses the insulation performance and status of a facility by analyzing the purity of SF ₆ gas. The portable analyzer can simultaneously analyze decomposition gases such as moisture, SO ₂ and SOF ₂ depending on the equipment as well as the purity of SF ₆ gas, but if there is an excessive amount of other impurities in the gas, the accuracy decreases and the deterioration gas of insulating materials such as CO. Is a situation where there is no analysis equipment available. In addition, in the case of the existing analysis equipment, there is a problem in that there is a hassle in the analysis process, such as having to collect and analyze sample gas and then re-inject it into the facility.

In the case of the gas detection tube, substances that react with the gas to be analyzed are coated in the detection tube, so if a small amount of gas is collected and injected into the detection tube, the color changes in case of the presence of decomposed gas, and is approximately It is a device that allows you to measure the normal concentration. The gas detection tube has the advantage of being able to analyze within a relatively short time, like a portable analyzer, but it must be analyzed using a separate detection tube for each decomposition gas, and the material applied in the detection tube is due to cross-sensitivity with other decomposition products. As a result, there is a disadvantage that the reliability of the results is significantly lowered.

The general measuring range of the gas detection tube can be analyzed in a wide range from several ppm to% depending on the product and the target material, but the accuracy itself is very low to ±15~25%. Diagnosis is impossible.

Third, there are gas sensors that are currently used in some, and generally, semiconductor type, electrochemical type, catalytic combustion type, and optical type gas sensors are commonly used in a wide range. The principle of these gas sensors is to detect the gas of a specific component contained in the gas, convert it into an appropriate electric signal according to the concentration, and display the result, thereby indicating the existence and concentration of the gas. The characteristics of these gas sensors are high detection speed, high efficiency, miniaturization, and automatic online monitoring because they convert to electronic signals and display results.

However, in the case of existing gas sensors for detection of SO ₂ , H ₂ S, and HF gas, the selectivity of the detection gas is poor and it is sensitive to react to other gas groups, and the minimum concentration of the detection gas is 10 ppm or more, and SO ₂ It is difficult to use HF and SO ₂ for detection of two gases because it can be detected only at relatively high concentrations of 100 ppm or more.

In addition, since all of the existing gas sensors consume power to drive, there is a problem that needs to be considered, and an optical sensor can be applied to improve this, but the optical sensor has a slow reaction time, expensive product price, and it is difficult to downsize. It is vulnerable to use for facility diagnosis in the field.

As described above, the existing technologies diagnose abnormalities of gas insulated devices by measuring the amount of partial discharge rather than the presence or absence of decomposed gas, so the reliability and accuracy of the diagnosis method itself are insufficient, and it is difficult to analyze in real time in the field. In addition, other portable diagnostic devices, detector tubes, and conventional gas sensors capable of analyzing decomposed gases have low selectivity for specific decomposed gases and also show cross-sensitivity, so there is a problem of low accuracy.

Patent Document 1: Registered Patent Publication No. 0883266 (registered in 2009.02.04)

Therefore, it is an object of the present invention to use organic dyes to overcome the above-described disadvantages so that the presence or absence of decomposition gas due to partial discharge in a gas insulator or decomposition gas caused by deterioration of other insulating materials can be easily diagnosed in the field. It is to provide a gas sensor module for diagnosis of a gas insulated device.

In addition, an object of the present invention is to provide a gas sensor module for diagnosing a gas insulated device, including an electrochemical sensor that can analyze the presence of CO gas in the decomposition gas, and intuitively diagnose abnormalities and deterioration of the gas insulated device.

According to the features of the present invention for achieving the above object, the present invention reacts with one or more of HF and SO ₂ which are decomposition gases of SF ₆ to cause color change and reacts with CO It includes one selected from among the electrochemical sensor units measuring the concentration or two simultaneously.

The color variable sensor unit includes an organic dye and an additive.

The organic dyes are Fluorescein, Bromocresol Green, Methyl Red, Bromocresol Purple, Bromophenol Red, Bromopyrogallol Red, Chlorophenol Red 5, 10, 13, 20-tetraphenylporphy (II), 5,10,15,20-tetrakis (2,4, It may be one or more selected from 6-trimethylphenyl)porphyrinatocobalt(II), Chlorophenol Red, Nitrazine Yellow, Bromophenol Blue, and Bromocresol Green.

The organic dye may be selected among all the composite analysis dye to react all of the HF analysis dyes, SO ₂ analysis dyes, HF and SO ₂ to react with the SO ₂ to react with HF 1.

The HF analysis dyes are Fluorescein, Bromocresol Green, Methyl Red, Bromocresol Purple, Bromophenol Red, Bromopyrogallol Red, Chlorophenol Red 5, 10, 13, 20-tetraphenylporphy (II), 5,10,15,20-tetrakis (2,4 ,6-trimethylphenyl)porphyrinatocobalt(II) may be one or more selected from the group consisting of.

The SO ₂ analysis dye may be at least one selected from Chlorophenol Red and Nitrazine Yellow.

The complex analysis dye may be at least one selected from Bromophenol Blue and Bromocresol Green.

The additive may be at least one member selected from Tetrabutyllammonium hydroxide 2-methoxyethanol, HgCl2, Zn (OAc) 2, AgNO 3.

The organic dyes and additives are fixed with a sol-gel matrix.

The sol-gel matrix may be a sol-gel matrix based on a silane precursor material of at least one selected from among Tetraethoxysilane, Methyltriethoxysilane, Phenethyltrimethoxysilane, and Octyltriethoxysilane.

The electrochemical sensor unit detects a change in a current value according to electrons generated by oxidation and reduction reactions at the anode and cathode according to the reaction with CO gas and outputs a result.

When HF and SO ₂ of 10 ppm or less are present, the color variable sensor unit detects the presence or absence of a color change within tens of seconds.

It is installed on the inner wall of gas insulated transformer or switch.

The present invention manufactures a gas sensor module including a color-variable sensor part that changes color for HF and SO ₂ gas, which are decomposition gases of SF ₆ by using organic dyes, and an electrochemical sensor part capable of measuring CO gas, This is installed on the inner wall of a gas-insulated transformer or switch, and if decomposition gas is generated by partial discharge or arc inside the device without separate gas collection, it is immediately detected at the site and displayed as color change and concentration.

Accordingly, the present invention has the effect of enabling a field worker to easily check the presence or absence of decomposition gas and its approximate concentration outside the facility, and to simultaneously identify the presence or absence of partial discharge and deterioration to respond to the facility in real time.

In addition, since the present invention can determine the presence or absence of gases with a relatively low concentration of 10 ppm or less for HF and SO ₂ through color change, it can be easily diagnosed in the field at the beginning of occurrence of abnormalities in the gas insulation device or deterioration of the gas insulation device. It can have an effect.

1 is a conceptual diagram showing a gas sensor module for diagnosing a gas insulated device according to an embodiment of the present invention.
2 is a conceptual diagram showing a gas sensor module for diagnosing a gas insulated device according to another embodiment of the present invention.
3 is a conceptual diagram showing an electrochemical sensor unit in the gas sensor module for diagnosing a gas insulated device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The gas sensor module for diagnosing a gas insulated device of the present invention (hereinafter referred to as “gas sensor module”) includes a color variable sensor unit 20 and an electrochemical sensor unit 30, as shown in FIG. 1.

The gas insulated device 1 includes a transformer, a switch and a circuit breaker. When an abnormality such as partial discharge or overheating occurs inside the gas insulated device 1, decomposition gases such as HF, SO ₂ , and CO are generated due to deterioration of the solid insulator or the body of the facility.

The detection of HF and SO ₂ gas in the gas insulated device means that the SF ₆ gas, which is an insulating medium, has already undergone considerable decomposition due to partial discharge abnormalities such as fault current interruption or arc generation.

CO gas is a gas generated due to thermal decomposition or aging deterioration of solid insulators, and there is no big problem even if it exists at a relatively high concentration (300 ppm) compared to HF and SO ₂ . However, since the generation of CO gas means that the decomposition of solid insulators has begun, the reliability and accuracy of diagnosis of gas insulators can be improved if the analysis of CO gas as well as the detection of partial discharge decomposition gases such as HF and SO ₂ is performed simultaneously.

The gas sensor module 10 for diagnosing a gas insulated device may be installed on an inner wall surface of a transformer, a switch, or a circuit breaker. This makes it possible to immediately detect when decomposition gas is generated in the gas insulation device 1 due to abnormal conditions or arcs, etc., without separately collecting gas from the gas insulation device 1.

For example, the gas sensor module 10 for diagnosing a gas insulated device is installed in a compartment or space in which SF ₆ gas, an insulating medium inside the gas insulated device 1, exists, or measures the pressure, density, and temperature of the SF ₆ gas. It can be installed around the area to be monitored at the same time. When installing the gas sensor module 10 near the area measuring the pressure, density, and temperature of the SF ₆ gas, the field worker can easily check the presence of gas and the approximate concentration outside the facility.

HF and SO2, which are decomposition gases of SF6, are diagnosed with the color variable sensor unit 20.

The color variable sensor unit 20 contains an organic dye and an additive. Organic dyes and additives act as color change indicators for chemical reactions.

Organic dyes such as 1) Lewis acid/base dye, 2) Bronsted acid/base dye, and 3) Permonent dipole dye, which are the core substances that cause color change, called “Chemoresponsive dye”, react chemically through molecular interactions The color conversion indicates whether the insulation device is abnormal or deteriorated.

Since organic dyes must have metal salts that can react with specific organic substances or contain active points that can cause color change by reacting with acids or basic substances, they react to Lewis basicity (donating electron pairs or binding of metal ions). Organic dyes containing metal ions, pH indicators and additives reacting to Brensted acidity/basicity, organic dyes having a permanent dipole reacting to local polarity, and metal salts participating in redox reactions can be used as organic dyes. .

Organic dyes include Fluorescein, Bromocresol Green, Methyl Red, Bromocresol Purple, Bromophenol Red, Bromopyrogallol Red, Chlorophenol Red 5, 10, 13, 20-tetraphenylporphy(Ⅱ), 5,10,15,20-tetrakis(2,4,6 It may be one or more selected from -trimethylphenyl)porphyrinatocobalt(II), Chlorophenol Red, Nitrazine Yellow, Bromophenol Blue, and Bromocresol Green.

The additive may be at least one selected from Tetrabutyllammonium hydroxide 2-methoxyethanol, HgCl2, Zn(OAc) ₂ and AgNO ₃ .

Specifically, organic dyes can be classified into HF analysis dyes that react with HF, SO ₂ analysis dyes that react with SO ₂ , and complex analysis dyes that react with both HF and SO ₂ .

HF analysis dyes include Fluorescein, Bromocresol Green, Methyl Red, Bromocresol Purple, Bromophenol Red, Bromopyrogallol Red, Chlorophenol Red 5, 10, 13, 20-tetraphenylporphy(II), 5,10,15,20-tetrakis(2,4, It may be one or more selected from the group consisting of 6-trimethylphenyl)porphyrinatocobalt(II), m-Cresol Purple.

If one or more of organic dyes such as Methyl Red, Bromocresol Green, and m-Cresol Purple are used at the same time, the color change according to the difference in concentration can be detected. At this time, depending on the concentration range for detection and the selected organic dye, 1.0M of Tetrabutyllammonium hydroxide 2-methoxyethanol can be added as an additive, or 1.0M of Tetrabutyllammonium hydroxide 2-methoxyethanol and HgCl2 or Zn(OAc) ₂ can be added. have.

The SO ₂ analysis dye may be at least one selected from Chlorophenol Red and Nitrazine Yellow. The color variable sensor unit 20 including the SO ₂ analysis dye may use 1.0M of Tetrabutyllammonium hydroxide 2-methoxyethanol as an additive.

The complex analysis dye is a dye for analyzing both HF and SO ₂ and may be at least one selected from Bromophenol Blue and Bromocresol Green. In this case, AgNO ₃ may be used as the additive.

In fact, in the case of HF, it is important to determine the possibility of the presence or absence of a single substance, but it is difficult to quantitatively determine the relative abundance of HF alone. This is because one of the additional reaction products of SF ₄ that can be generated by decomposition of SF ₆ gas is HF. In addition to HF, SOF ₂ and SO ₂ are generated. Since the generation rates of these gases are different, it may be important to determine whether SF ₆ gas is decomposed by simultaneously analyzing HF and SO ₂ gas, if necessary.

Organic dyes and additives are fixed with a sol-gel matrix. To be precise, organic dyes and additives are fixed in a porous sol-gel matrix.

This is to ensure selectivity and accuracy for the target decomposition material based on a large surface area, inertness in both gas and liquid phases, and excellent stability in a wide pH range. When an organic dye and an additive that can act as a color change indicator of a chemical reaction are fixed on the sol-gel matrix, when the decomposition gas exists, a chemical reaction between the decomposition gas and the organic dye occurs within tens of seconds, but color change occurs. do. Through this, it is possible to determine the presence or absence of abnormalities inside the gas insulation device. Furthermore, it is possible to determine the degree of abnormality in the condition of the facility through the color change according to the concentration of the decomposition gas.

The sol-gel matrix has a basic configuration of a sol-gel matrix based on a silane precursor material that is at least one selected from among Tetraethoxysilane, Methyltriethoxysilane, Phenethyltrimethoxysilane, and Octyltriethoxysilane. Since such a silane precursor-based sol-gel matrix can easily modify physical and chemical properties (hydrophobicity, porosity) through changes in the sol-gel formulation, it can be modified according to organic dyes, thereby improving the stability and shelf life of the color variable sensor It also reduces the reactivity of the matrix itself to the factors such as relative humidity and temperature.

As shown in FIG. 1, the color variable sensor unit 20 includes a first color variable sensor unit 21 reacting to HF gas and a second color variable sensor unit 23 reacting to SO ₂ gas. I can.

In this case, reference colors 21a and 23a are placed on the left side of the first and second color changeable sensor units 21 and 23 to facilitate color change check.

Therefore, when the first color variable sensor unit 21 has the same color as the left reference color 21a and the first color variable sensor unit 21 reacts to the HF gas to cause color change, the first color variable sensor unit 21 ) And the left reference color (21a) are different so that the field worker can easily check.

In addition, when the second color-variable sensor unit 23 has the same color as the left reference color 23a and the second color-variable sensor unit 23 reacts to the SO ₂ gas to cause color change, the second color-variable sensor unit ( 23) and the left reference color 23a are different so that the field worker can easily check.

Alternatively, as shown in FIG. 2, the color variable sensor unit 20 includes a first color variable sensor unit 21 reacting to HF gas, a second color variable sensor unit 23 reacting to SO ₂ gas, and HF. It may include a third color variable sensor unit 25 reacting to both and SO ₂ .

In this case, the third color variable sensor unit 25 is one or more selected from Bromophenol Blue and Bromocresol Green as an organic dye, AgNO ₃ may be used as an additive, and the organic dye and additive are fixed with a sol-gel matrix. .

The third color variable sensor unit 25, like the first and second color variable sensor units 21 and 23, has a reference color 25a on the left side to facilitate color change check. Accordingly, it is possible to simultaneously analyze HF and SO ₂ gas to determine whether SF ₆ gas is decomposed.

When HF and SO ₂ of 10 ppm or less are present, the color variable sensor unit 20 detects the presence or absence of a color change within tens of seconds.

The color variable sensor unit 20 is a chemical sensor based on intermolecular interaction, which is a kind of chemical reaction. Therefore, due to the intermolecular attraction between the target decomposition gas and the organic dye that detects it, the selectivity and analysis accuracy for the sensing target of the sensor are high. Can each allow the gas exposure for the analysis of critical gases such as HF, SO _2, particularly for the least points diagnostic concentration _{(HF: 3ppm, SO 2:} 5ppm) , so the analysis is available for a short time within tens of seconds at the level over early in the scene Diagnosis is possible.

Meanwhile, the CO gas, which is the decomposition gas of SF6, is diagnosed with the electrochemical sensor unit 30.

The electrochemical sensor unit 30 is a principle of detecting a change in a current value according to electrons generated by oxidation and reduction reactions at an anode and a cathode according to a reaction with CO gas and outputting a result.

The CO gas analysis concentration of the electrochemical sensor unit 30 is a minimum of 50 ppm and a maximum of 300 ppm.

As shown in FIG. 3, the electrochemical sensor unit 30 includes a working electrode 33, a counter electrode 35, and a reference electrode 37 on the substrate 31. ) Is formed, and the reaction electrode 33, the counter electrode 35, and the reference electrode 37 are all formed on one surface of the substrate 31. Electrolyte can be used in both liquid and solid electrolytes. A current flows between the two electrodes through the reaction in the reaction electrode 33 and the counter electrode 35, and the current flowing at this time is proportional to the CO gas concentration, so that the CO gas concentration can be measured.

The reaction electrode 33, the _{C0 + H 2 O -> CO} 2 + 2H + + 2e - occurs reactions, the counter electrode 35, the ^{_{1 / 2O 2 + 2H - +}} 2e - -> H 2 O reaction arose while Current flows.

The substrate 31 is made of a material such as silicon, quartz, glass, etc., a reference electrode 37 is disposed between the reaction electrode 33 and the counter electrode 35, and the reaction electrode 33, the reference electrode 37, A member lane (membrane) 39 forms a boundary between the counter electrodes 35.

As described above, the color changeable sensor unit 20 of the present invention has a maximum concentration of HF and SO _{2 in} the measurement range of 10 ppm or less, and a color change occurs within tens of seconds even when exposed to a decomposition gas of only a few ppm. Therefore, it is possible to first check the diagnosis of abnormalities such as partial discharge in the gas insulation device 1 by checking the presence or absence of gas generation in the gas insulation device 1.

Moreover, the color variable sensor unit 20 can analyze the presence or absence of two or more kinds of gases depending on the organic dye. As described above, color change can be recognized up to a low concentration corresponding to 20% of the maximum PEL concentration depending on the environment in which the gas sensor module 10 is applied, so it can be checked immediately at the beginning of gas decomposition immediately after a partial discharge or fault current occurs, or an arc occurs. This is possible.

In addition, since the electrochemical sensor unit 30 can analyze CO gas in a range of a minimum of 50 ppm to a maximum of 300 ppm, the color variable sensor unit 20 and the gas sensor module 10 included as the electrochemical sensor unit 30 Upon introduction, real-time response to the facility is possible by simultaneously grasping the presence or absence of partial discharge and deterioration of the gas insulator (1).

As described above, the present invention constitutes a porous sol-gel matrix based on an organic dye, so that a color change is expressed in the presence of the decomposition gas due to mutual force due to a chemical reaction between the organic dye and the decomposition gas. Therefore, the selectivity for each decomposition gas is high, and thus the accuracy of the result value is improved, so that the operator in the field can intuitively diagnose the abnormality and deterioration condition of the gas insulator device through color change screening.

In particular, for HF and SO ₂ , it is possible to determine the presence or absence of relatively low concentration gases of 10 ppm or less through color change, and through this, it is possible to easily diagnose in the field at the beginning of occurrence of abnormalities in the gas insulation device or deterioration of the gas insulation device. I can. In addition, since separate calibration for the analysis equipment is not required, it is possible to immediately perform a low-cost qualitative analysis in the field prior to quantitative analysis using high-cost and expensive diagnostic equipment, so there is an advantage that time and cost consumption can be significantly reduced.

In addition, in a situation where the importance of preventive diagnosis for the stable operation of power facilities is strengthening, workers can easily measure decomposed gas without a separate precision analysis equipment at the site, so it is possible to check in real time at the site if necessary. After the first screening through the gas sensor module, if it is used in parallel with a precision analysis device, it is possible to improve diagnostic reliability by securing all the grounds for simplicity, high accuracy, and condition diagnosis and cause identification of equipment.

The gas sensor module of the present invention is compared with the gas detection tube used in the existing field, compared to the gas detection tube 1) It is possible to simultaneously analyze the gas to be analyzed according to the selected dye (organic reacting to HF and SO ₂ gas analysis respectively. If the dye is selected, gas can be detected at the same time), and 2) there is an advantage of being detected immediately when decomposition gas is generated inside the device without separate gas collection inside the transformer or switch.

The gas sensor module described above can be used to evaluate abnormal locations and deterioration of all gas insulated devices using SF ₆ gas as an insulating medium. The gas sensor module described above can be manufactured in the form of a paper or a sensor array.

The present invention has been disclosed in the drawings and the specification, the best embodiments. Here, specific terms have been used, but these are only used for the purpose of describing the present invention, and are not used to limit the meaning or the scope of the present invention described in the claims. Therefore, the present invention will be understood by those of ordinary skill in the art that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical scope of the present invention should be determined by the technical idea of the appended claims.

1: gas insulated device 10: gas sensor module
20: color variable sensor unit 21: first color variable sensor unit
23: second color variable sensor unit 25: third color variable sensor unit
30: electrochemical sensor unit 31: substrate
33: reaction electrode 35: counter electrode
37: reference electrode 39: member lane (filter)

Claims (13)

Including; a color variable sensor unit that causes color change by reacting with at least one of HF and SO ₂ which are decomposition gases of SF ₆ generated due to partial discharge in the gas insulated device,
The color variable sensor unit includes an organic dye and an additive,
The additive is at least one selected from the group consisting of Tetrabutyllammonium hydroxide 2-methoxyethanol, HgCl2, Zn(OAc)2 and AgNO3. Gas sensor module for diagnosing a gas insulated device, characterized in that. delete The method according to claim 1,
The organic dyes are Fluorescein, Bromocresol Green, Methyl Red, Bromocresol Purple, Bromophenol Red, Bromopyrogallol Red, Chlorophenol Red 5, 10, 13, 20-tetraphenylporphy (II), 5,10,15,20-tetrakis (2,4, 6-trimethylphenyl)porphyrinatocobalt(II), Chlorophenol Red, Nitrazine Yellow, Bromophenol Blue, Bromocresol Green, characterized in that at least one selected from gas insulated device diagnosis gas sensor module. The method according to claim 1,
The organic dye is
HF analysis dye reacting with HF;
SO ₂ analysis dye reacting with SO ₂ ; And
A gas sensor module for diagnosing gas insulated devices, characterized in that it is one selected from complex analysis dyes that react with both HF and SO ₂ . The method of claim 4,
The HF analysis dyes are Fluorescein, Bromocresol Green, Methyl Red, Bromocresol Purple, Bromophenol Red, Bromopyrogallol Red, Chlorophenol Red 5, 10, 13, 20-tetraphenylporphy (II), 5,10,15,20-tetrakis (2,4 ,6-trimethylphenyl)porphyrinatocobalt(II) Gas sensor module for diagnosis of a gas insulated device, characterized in that at least one selected from the group consisting of. The method of claim 4,
The SO ₂ analysis dye is a gas sensor module for diagnosis of a gas insulated device, characterized in that at least one selected from Chlorophenol Red and Nitrazine Yellow. The method of claim 4,
The complex analysis dye is a gas sensor module for diagnosing a gas insulated device, characterized in that at least one selected from Bromophenol Blue and Bromocresol Green. delete The method according to claim 1,
The organic dye and the additive is a gas sensor module for diagnosis of a gas insulated device, characterized in that fixed with a sol-gel matrix. The method of claim 9,
The sol-gel matrix is
A gas sensor module for diagnosing a gas insulated device, characterized in that it is a sol-gel matrix based on a silane precursor material selected from at least one selected from among Tetraethoxysilane, Methyltriethoxysilane, Phenethyltrimethoxysilane, and Octyltriethoxysilane. The method according to claim 1,
The gas sensor module for diagnosing the gas insulated device further comprises an electrochemical sensor unit that reacts with CO to measure the CO concentration,
The electrochemical sensor unit detects a change in a current value according to electrons generated by oxidation and reduction reactions at the anode and the cathode according to the reaction with the CO gas and outputs a result. The method according to claim 1,
The gas sensor module for diagnosing a gas insulated device, characterized in that the color variable sensor unit detects the presence or absence of a color change within tens of seconds when HF or SO ₂ of 10 ppm or less is present. The method according to claim 1,
A gas sensor module for diagnosing a gas insulated device, characterized in that it is installed on the inner wall of a gas insulated transformer or switch.

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