KR20200040477A - Sensor module for diagnosis of gas insulation apparatus - Google Patents

Abstract

The present invention relates to a gas sensor module for diagnosing a gas insulator, which includes selected one or both of the two following sensor units, a color change sensor unit (20) which causes a color change by reacting with at least one of HF and SO2, which are decomposition gases of SF6, and an electrochemical sensor unit (30) which measures CO concentration by reacting with CO. The present invention has an advantage in that presence or absence of decomposition gas due to partial discharge in the gas insulator or decomposition gas due to deterioration of other insulating materials can be easily diagnosed in a field by using an organic dye.

Description

Gas sensor module for diagnosing gas insulators {SENSOR MODULE FOR DIAGNOSIS OF GAS INSULATION APPARATUS}

The present invention relates to a gas sensor module for diagnosing a gas insulator, and more particularly, to a gas sensor module for diagnosing a gas insulator that can be easily diagnosed in a short time in the field when deterioration and abnormality occur in the gas insulator. .

The gas insulation device includes a gas insulation transformer (Gas Transformer), a gas insulation switch (Gas Insulated Switchgear). When an abnormal place such as a partial discharge in a gas insulator occurs, SF6 gas, an internal insulation medium, is decomposed to generate decomposition gas such as SO ₂ , HF, or due to deterioration of a solid insulator or gas insulator material When a decomposition gas such as CO is generated, it is important to enable screening of the condition of the facility primarily in the field.

As the recent facility management method has been changed from the existing Time Based Management (TBM) to CBM (Condition Based Management), protection measures are urgently needed so that failure signs can be drawn in advance and actions taken before a failure occurs. Therefore, in the case of power facilities, it is essential to apply an efficient diagnostic method to early diagnosis of the fault location and to improve the operation reliability of the facilities based on this, so that power can be stably supplied.

However, in the case of gas insulators, SF ₆ gas and insulating gas analysis of insulators are essential for determining the abnormal diagnosis of equipment and life evaluation. However, the standards for analyzing these gases have not been properly established.

There are three major diagnostic technologies for conventional gas insulators.

First, it is a method of using UHF (Ultra High Frequency) sensor for partial discharge field diagnosis 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), respectively, but it is difficult to interchange the results. That is, the on-site measurement result using the UHF sensor and the factory test result using the coupler sensor tend to be inconsistent. In particular, in the case of the on-site measurement method, the calibration method of the equipment and the conversion method in pC units of the measured value are used. As it is not established, it is difficult to evaluate the facility health through a partial discharge diagnosis for the gas insulator.

In addition, the measurement method using the UHF sensor is a measurement device optimized for partial discharge measurement of a gas insulation switchgear among gas insulators, so it has a disadvantage in that it is not suitable for application to gas insulation transformers having different facility structures and measurement standards.

Secondly, it is a portable analyzer and gas detector that are commonly used to diagnose gas insulators in the field. In the case of these diagnostic devices, they are used in the diagnosis of gas insulators in that it is possible to determine the presence or absence of decomposition gas within a relatively short time in the field.

In the case of a portable analyzer, the main purpose is to indirectly diagnose the insulation performance and status of the facility by analyzing the purity of SF ₆ gas. The portable analyzer can simultaneously analyze the decomposition gases such as moisture, SO ₂ , and SOF ₂ depending on the equipment along with the purity of the SF ₆ gas, but the accuracy is deteriorated when there are excessive other impurities in the gas, and the deterioration gas of insulating materials such as CO Is a situation where no analytical equipment exists. 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 collecting sample gas and analyzing it, and then re-injecting it into the facility.

In the case of the gas detection tube, substances that react with the gas to be analyzed in the detection tube are coated, and when a small amount of gas is injected and injected into the detection tube, the color changes when there is decomposition gas. It is a device that can measure the concentration. The gas detector 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 detector tube for each decomposition gas, and the material coated in the detector tube is cross sensitive to other decomposition products. Therefore, there is a disadvantage that the reliability of the result is significantly reduced.

The general measurement 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%, so the gas insulator only malfunctions Diagnosis is impossible.

Third, there are gas sensors currently used in some parts. In general, there are semiconductor, electrochemical, contact combustion, and optical gas sensors in a widely used manner. The principle of these gas sensors is to detect the presence or absence and concentration of the corresponding gas by detecting the gas of a specific component contained in the gas and converting it into an appropriate electrical signal according to the concentration. The characteristics of these gas sensors have the advantage of being capable of high-speed detection, high efficiency, miniaturization, and automatic online monitoring because they are converted into electronic signals and display results.

However, in the case of existing gas sensors for detecting SO ₂ , H ₂ S, and HF gas, there is a disadvantage in that the selectivity of the detection gas is low and it is sensitive such as reacting with other gas groups, and the minimum concentration of the detection gas and HF is 10 ppm or more, SO ₂ there are difficulties because they can only be detected using relatively high concentrations less than 100ppm by two gas detection purposes of HF and SO _2.

In addition, since all existing gas sensors consume power for driving, 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 is difficult to downsize. It is vulnerable to use in the field for equipment diagnosis.

As described above, since the existing technologies diagnose abnormalities of the gas insulator by measuring the amount of partial discharge, not the presence or absence of decomposition gas, the reliability and accuracy of the diagnostic method itself are insufficient, and it is difficult to analyze in real time in the field. In addition, in the case of portable diagnostic devices, detectors, and existing gas sensors capable of analyzing other decomposition gases, the selectivity to specific decomposition gases is low, and cross-sensitivity is also shown, resulting in low accuracy.

Patent Literature 1: Registered Patent Publication No. 083266 (Registered on Feb. 2009)

Therefore, the object of the present invention is to overcome the above disadvantages by using an organic dye to easily diagnose the presence or absence of decomposition gas due to deterioration of decomposition gas or other insulation due to partial discharge in the gas insulator. A gas sensor module for diagnosing a gas insulator is provided.

In addition, an object of the present invention is to provide a gas sensor module for diagnosing gas insulators that enables intuitive and abnormal diagnosis of gas insulators, including an electrochemical sensor unit capable of analyzing the presence of CO gas in decomposition gas.

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 decomposition gases of SF ₆ to react with CO and react with CO to react with CO It includes one or two selected from the electrochemical sensor unit for measuring the concentration.

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

The 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-trimethylphenyl) porphyrinatocobalt (II), Chlorophenol Red, Nitrazine Yellow, Bromophenol Blue, Bromocresol Green.

The organic dye may be one selected from HF analytical dyes reacting with HF, SO ₂ analytical dyes reacting with SO ₂ , and complex analytical dyes reacting both HF and SO ₂ .

The HF analyte 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).

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 selected from Tetrabutyllammonium hydroxide 2-methoxyethanol, HgCl2, Zn (OAc) 2, AgNO ₃ .

The organic dye and additive are fixed with a sol-gel matrix.

The sol-gel matrix may be a sol-gel matrix based on one or more silane precursor materials selected from Tetraethoxysilane, Methyltriethoxysilane, Phenethyltrimethoxysilane, and Octyltriethoxysilane.

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

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

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

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

Therefore, the present invention has the effect of enabling the field worker to easily check whether there is decomposition gas and the approximate concentration from the outside of the facility, and simultaneously recognize the partial discharge and deterioration, so that the facility can respond in real time.

In addition, the present invention can detect the presence or absence through color change of relatively low concentration gases of 10ppm or less for HF and SO ₂ , so that the gas insulator can be easily diagnosed in the field in the early stages of occurrence or abnormality of the gas insulator. It has the effect.

1 is a conceptual view showing a gas sensor module for diagnosing a gas insulator according to an embodiment of the present invention.
2 is a conceptual view showing a gas sensor module for diagnosing a gas insulator according to another embodiment of the present invention.
3 is a conceptual view showing an electrochemical sensor unit in a gas sensor module for diagnosing a gas insulator 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 insulator of the present invention (hereinafter referred to as a “gas sensor module”) includes a color-variable sensor unit 20 and an electrochemical sensor unit 30 as illustrated in FIG. 1.

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

The detection of HF and SO ₂ gas in the gas insulator means that the gas has been decomposed to a large extent due to partial discharge abnormalities such as failure current blocking and arc generation due to the mechanism of the SF ₆ gas, which is an insulating medium.

CO gas is a gas generated due to thermal decomposition or aging of solid insulators, and there is no problem even if it is present 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, if the partial discharge decomposition gas such as HF and SO _{2 is} detected and analysis of CO gas is performed at the same time, reliability and accuracy of diagnosis of the gas insulator can be improved.

The gas sensor module 10 for diagnosing a gas insulator can be installed on an inner wall surface such as a transformer, a switch, and a breaker. This makes it possible to immediately detect when decomposition gas is generated due to any abnormal condition or arc inside the gas insulator 1 without separately collecting gas from the gas insulator 1.

For example, the gas sensor module 10 for diagnosing a gas insulator is installed in a space or space where SF ₆ gas, an insulating medium inside the gas insulator 1, or measures the pressure, density, or temperature of the SF ₆ gas. It can be installed at the periphery of the site to enable monitoring at the same time. When installing the gas sensor module 10 around the site to measure the pressure, density, and temperature of the SF ₆ gas, the field worker can easily check whether the gas is generated and the approximate concentration outside the facility.

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

The color-variable sensor unit 20 includes organic dyes and additives. Organic dyes and additives act as indicators of color change in chemical reactions.

     Organic dyes such as 1) Lewis acid / base dye, 2) Bronsted acid / base dye, and 3) Permonent dipole dye, which are key substances that cause color change, called “Chemoresponsive dye”, react chemically by intermolecular interaction and gas The abnormality and deterioration of the insulation device are indicated by color conversion.

Since the organic dye must have a metal salt that can react with a specific organic substance or contain an active site that can react with an acid or a basic substance to cause color change, Lewis basicity (electron pair donation or binding of metal ions) reacts Organic dyes containing metal ions, pH indicators and additives that respond to Brensted acidity / bases, organic dyes with permanent dipoles that react to local polarity, and metal salts that participate 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 -trimethylphenyl) porphyrinatocobalt (II), Chlorophenol Red, Nitrazine Yellow, Bromophenol Blue, Bromocresol Green.

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

More specifically, the organic dye may be separated by the composite analysis of dyes that respond to both SO ₂ analysis dyes, HF and SO ₂ to react with HF analysis dyes, SO ₂ to react with HF.

HF analytical 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 m-Cresol Purple.

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

The SO ₂ analytical dye may be one or more selected from Chlorophenol Red and Nitrazine Yellow. The color-variable sensor unit 20 containing SO ₂ analytical dye can use 1.0M of Tetrabutyllammonium hydroxide 2-methoxyethanol as an additive.

The complex analytical dye is a dye for analyzing both HF and SO ₂ , and may be one or more selected from Bromophenol Blue and Bromocresol Green. At this time, AgNO ₃ may be used as the additive.

Actually, in the case of HF, it is also important to understand 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 HF is one of the additional reaction products of SF ₄ that can be generated by decomposition of SF ₆ gas. In addition to HF, SOF ₂ and SO ₂ are produced. Since the production rates of these gases are different, it may be important to determine whether SF ₆ gas is decomposed by simultaneously analyzing SO ₂ gas along with HF if necessary.

Organic dyes and additives are fixed with a sol-gel matrix. Precisely, the organic dyes and additives are fixed with a porous sol-gel matrix.

This is to ensure selectivity and accuracy for the target decomposition product based on excellent stability in a wide pH range, inertness in both gas phase and liquid phase, and in a wide pH range. When a decomposition gas is present in a state in which an organic dye and an additive capable of serving as a color change indicator for a chemical reaction are fixed on the sol-gel matrix, a chemical reaction occurs between the decomposition gas and the organic dye within tens of seconds, but a color change occurs. do. Through this, it is possible to determine whether there is an abnormality in the gas insulator. Furthermore, it is possible to grasp the degree of abnormality of the facility through color change according to the concentration of decomposition gas.

The sol-gel matrix is based on a sol-gel matrix based on a silane precursor material selected from at least one selected from Tetraethoxysilane, Methyltriethoxysilane, Phenethyltrimethoxysilane, and Octyltriethoxysilane. The silane precursor-based sol-gel matrix can be easily transformed by changing the physical and chemical properties (hydrophobic, porous) through sol-gel formulations. It is also necessary to reduce the reactivity of the matrix itself to the relative humidity and temperature, which are factors.

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

In this case, the reference colors 21a and 23a are placed on the left side of the first and second color-variable sensor units 21 and 23 to facilitate color variation confirmation.

Accordingly, 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 with HF gas to cause color variation, the first color-variable sensor unit 21 ) And the left reference color (21a) are different, so the field worker can easily check them.

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 SO ₂ gas and causes color variation, the second color-variable sensor unit ( 23) and the left reference color (23a) are different, so the field worker can easily check them.

Alternatively, as illustrated in FIG. 2, 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 and HF. And a third color-variable sensor unit 25 that reacts to both SO ₂ and SO ₂ .

In this case, the third color-variable sensor unit 25 is an organic dye, one or more selected from Bromophenol Blue and Bromocresol Green is used, and AgNO ₃ can 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, places a reference color 25a on the left side to facilitate color variation verification. Accordingly, it is possible to determine whether to decompose SF ₆ gas by simultaneously analyzing H ₂ and SO ₂ gas.

The color changeable sensor unit 20 detects the presence or absence of color change within tens of seconds when HF and SO ₂ of 10 ppm or less are present.

The color-variable sensor unit 20 is a chemical sensor based on intermolecular interaction, which is a kind of chemically reactive property. Therefore, the selectivity for the detection target of the sensor and the analysis accuracy are high due to the intermolecular attraction force between the target decomposition gas and the organic dye detecting it. In particular, it is possible to analyze for a short time within tens of seconds even at the level of the permissible concentration of gas (HF: 3ppm, SO ₂ : 5ppm) for HF and SO _{2, which} are the core gases for the analysis of abnormal places. Diagnosis is possible.

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

The electrochemical sensor unit 30 is a principle that detects a change in a current value according to electrons generated by oxidation and reduction reactions at an anode and a cathode in response to a reaction with CO gas and outputs the result.

The CO gas analysis concentration of the electrochemical sensor unit 30 is at least 50 ppm and at most 300 ppm.

As shown in FIG. 3, the electrochemical sensor unit 30 includes a reaction 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 for both liquid and solid electrolytes. The current flows between the two electrodes through the reaction at the reaction electrode 33 and the counter electrode 35. At this time, since the current flowing is proportional to the concentration of CO gas, it is possible to measure the concentration of CO gas.

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 silicon, quartz, glass, or the like, and 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 39 forms a boundary between the counter electrodes 35.

As described above, the color-variable sensor unit 20 of the present invention has a maximum concentration in the measurement range of HF and SO ₂ of 10 ppm or less, and color change occurs within tens of seconds even when exposed to decomposition gas of only a few ppm. Therefore, the presence or absence of gas generation in the gas isolating device 1 can be grasped so that abnormal diagnosis such as partial discharge in the gas isolating device 1 can be firstly checked in the field.

Moreover, the color-variable sensor unit 20 can also analyze the presence or absence of two or more kinds of gas according to the organic dye. In this way, depending on the environment to which the gas sensor module 10 is applied, the color change can be recognized up to a low concentration corresponding to 20% of the maximum PEL concentration, so that a partial discharge or failure current is generated, and immediately after gas generation, immediately check the gas decomposition. This is possible.

In addition, since the electrochemical sensor unit 30 can analyze CO gas in a range from a minimum of 50 ppm to a maximum of 300 ppm, the gas sensor module 10 included as the color-variable sensor unit 20 and the electrochemical sensor unit 30 can be analyzed. At the time of introduction, it is possible to simultaneously detect the partial discharge and deterioration of the gas insulator 1 and respond to the facility in real time.

As described above, the present invention is a system for constructing a porous sol-gel matrix based on an organic dye, whereby a color change is exhibited in the presence of a decomposition gas due to mutual attraction due to a chemical reaction between the organic dye and the decomposition gas. Therefore, the selectivity for each decomposition gas is high, thereby improving the accuracy of the result value, so that the operator can intuitively diagnose the abnormality and deterioration of the gas insulator through color change screening.

Particularly, for HF and SO ₂ , it is possible to grasp the presence or absence through color change even for relatively low concentration gases of 10 ppm or less, and through this, it is easy to diagnose in the field at the initial stage of gas insulator failure or gas deterioration. You can. In addition, since there is no need for a separate calibration for analytical equipment, time and cost consumption can be significantly reduced because a low-cost qualitative analysis is immediately possible in the field prior to quantitative analysis using expensive and expensive diagnostic equipment.

In addition, in the situation where the importance of preventive diagnosis for the stable operation of power facilities is being strengthened, workers can easily measure the decomposition gas without additional precision analysis equipment in the field, so it is possible to check in real time as needed. When used in parallel with a precision analysis device after the first screening through the gas sensor module, it is possible to improve the diagnostic reliability by securing both simplicity, high accuracy, and the basis of the condition diagnosis and cause identification of the equipment.

The gas sensor module of the present invention is capable of simultaneously analyzing the gas to be analyzed according to the selected dye compared to the gas detector compared to the gas detector used in many existing fields (organic reacting with HF, SO ₂ gas analysis respectively) If a dye is selected, gas can be detected at the same time), and 2) there is an advantage that it is immediately detected when decomposition gas is generated inside the device, without separate gas collection inside the transformer or switch.

The above-described gas sensor module can be used to evaluate abnormal locations and deterioration of all gas insulators that utilize SF ₆ gas as an insulating medium. The above-described gas sensor module may be manufactured in a paper form or a sensor array form.

The present invention has been described with the best embodiments in the drawings and specifications. Here, although specific terms are used, they are used for the purpose of describing the present invention only, and are not used to limit the scope of the present invention described in the meaning limitation or the claims. Therefore, the present invention will be understood by those of ordinary skill in the art that various modifications and other equivalent embodiments are possible. Therefore, the true technical scope of the present invention should be defined by the technical spirit of the appended claims.

1: Gas insulator 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)

A color-variable sensor unit that reacts with at least one of SF ₆ decomposition gas HF and SO ₂ to cause color variation; And
An electrochemical sensor unit that measures CO concentration by reacting with CO;
Gas sensor module for diagnosing a gas insulator, characterized in that it comprises one or two selected at the same time. The method according to claim 1,
The color-variable sensor unit gas sensor module for diagnosing a gas insulator, characterized in that it comprises an organic dye and an additive. The method according to claim 2,
The 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-trimethylphenyl) porphyrinatocobalt (II), gas sensor module for gas insulator diagnostics, characterized in that at least one selected from Chlorophenol Red, Nitrazine Yellow, Bromophenol Blue, and Bromocresol Green. The method according to claim 2,
The organic dye
HF analyte dye reacting with HF;
SO ₂ analytical dye reacting with SO ₂ ; And
Gas sensor module for diagnosing gas insulators, characterized in that it is one selected from complex analytical dyes that react both HF and SO ₂ . The method according to claim 4,
The HF analyte 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 diagnosing gas insulators, characterized in that at least one selected from the group consisting of. The method according to claim 4,
The SO ₂ analysis dye is at least one selected from Chlorophenol Red and Nitrazine Yellow, and a gas sensor module for diagnosing a gas insulator. The method according to claim 4,
The complex analysis dye is a gas sensor module for gas insulator diagnosis, characterized in that at least one selected from Bromophenol Blue and Bromocresol Green. The method according to claim 3,
The additive is Tetrabutyllammonium hydroxide 2-methoxyethanol, HgCl2, Zn (OAc) 2, AgNO ₃ Gas sensor module for diagnosing gas insulators, characterized in that at least one selected from. The method according to claim 2,
Gas sensor module for diagnosing gas insulators, characterized in that the organic dyes and additives are fixed with a sol-gel matrix. The method according to claim 9,
The sol-gel matrix
Gas sensor module for gas insulator diagnosis, characterized in that it is a sol-gel matrix based on at least one silane precursor selected from Tetraethoxysilane, Methyltriethoxysilane, Phenethyltrimethoxysilane, and Octyltriethoxysilane. The method according to claim 1,
The electrochemical sensor unit
A gas sensor module for diagnosing a gas insulator, characterized in that it detects a change in 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 the result. The method according to claim 1,
The color-variable sensor unit gas sensor module for diagnosing a gas insulator, characterized by detecting the presence or absence of color change within tens of seconds when HF and SO ₂ of 10 ppm or less are present. The method according to claim 1,
Gas sensor module for diagnosing a gas insulator, characterized in that it is installed on the inner wall of a gas insulated transformer or switch.

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