CN107884691A - A kind of SF6Gas-insulated switchgear built-in electrical insulation trouble-shooter and method - Google Patents
A kind of SF6Gas-insulated switchgear built-in electrical insulation trouble-shooter and method Download PDFInfo
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- CN107884691A CN107884691A CN201711456694.XA CN201711456694A CN107884691A CN 107884691 A CN107884691 A CN 107884691A CN 201711456694 A CN201711456694 A CN 201711456694A CN 107884691 A CN107884691 A CN 107884691A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1254—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of gas-insulated power appliances or vacuum gaps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/065—Means for detecting or reacting to mechanical or electrical defects
- H02B13/0655—Means for detecting or reacting to mechanical or electrical defects through monitoring changes of gas properties
Abstract
The present invention provides a kind of SF6Gas-insulated switchgear built-in electrical insulation trouble-shooter and method.Gas detecting tube is to SF6SO caused by being decomposed in gas-insulated switchgear running2Detected with HF and correct SO in electrochemical sensor2, HF gas component testing results；Electrochemical sensor detects SF6SO caused by being decomposed in gas-insulated switchgear running2、H2S, CO and HF gas components content；Gas chromatograph is to SF6CF caused by being decomposed in gas-insulated switchgear running4、SF6、SO2F2、SOF2、H2O、S2F10And S2OF10Concentration demarcated；The concentration of gaseous mass analyzer amendment gas chromatograph demarcation；Computer carries out SF according to the concentration of gaseous mass analyzer amendment6Gas-insulated switchgear built-in electrical insulation fault diagnosis；SF caused by different faults type in being run due to faulty equipment6Catabolite is different, therefore carries out qualitative and quantitative detection using the detection means being made up of gas detecting tube, electrochemical sensor, gas chromatograph and gaseous mass analyzer.
Description
Technical field
The invention belongs to switchgear insulation tube arrester technical field, more particularly to a kind of SF6Gas-insulated switch
Device interior insulation tube arrester device and method.
Background technology
With the development of power industry, SF6Switchgear gradually substitutes safety of traditional oil-filled equipment to power system
Stable and economical operation serves key effect.Due to equipment design, manufacture, installation and operation safeguard etc. there may be
Defect, cause device interior that shelf depreciation even arc discharge, serious threat power grid security, therefore detect SF in time occurs6
Switchgear internal flaw, to ensureing that the safe operation of equipment and power network is significant.In SF6Switchgear fault diagnosis
Early stage, traditional electrical test method is difficult to the accident defect for detecting device interior.Field operation experiences it has been shown that
By detecting SF6Gas decomposition product, can in time, the effectively Hidden fault in discovering device, carry out equipment fault positioning.
China's operation power unit largely carries out switchgear SF in recent years6Gas decomposition product detects work, Fujian, wide
Totally enclosed type combined electrical apparatus (the gas of the provincial electric power company such as east, Shaanxi and Anhui and its scientific research institution to affiliated power network
Insulated switchgear, GIS), the SF such as breaker6Switchgear has carried out general survey.Certain achievement is achieved, to set
Standby safeguard have accumulated substantial amounts of service data, and then provide technological guidance to the repair based on condition of component of equipment.Based on this, SF6Gas is examined
Survey application of the analysis method in terms of switchgear and possess larger prospect.Operating SF6Switchgear, because of switching manipulation or set
There is defect in standby inside so that dielectric strength reduces.Again due to SF6Switchgear is commonly used in China Power Grids.Therefore,
It is proposed a kind of SF6Gas-insulated switchgear built-in electrical insulation trouble-shooter and method are very necessary.
The content of the invention
The problem of existing for prior art, the present invention provide a kind of SF6Gas-insulated switchgear built-in electrical insulation failure
Diagnostic device and method.
The present invention adopts the following technical scheme that：
A kind of SF6Gas-insulated switchgear built-in electrical insulation trouble-shooter, including：
To SF6SO caused by being decomposed in gas-insulated switchgear running2Detected with HF and correct electrochemistry biography
SO in sensor2, HF gas component testing results gas detecting tube；
Detect SF6SO caused by being decomposed in gas-insulated switchgear running2、H2S, CO and HF gas components contain
The electrochemical sensor of amount；
To SF6CF caused by being decomposed in gas-insulated switchgear running4、SF6、SO2F2、SOF2、H2O、S2F10With
And S2OF10The gas chromatograph demarcated of concentration；
The gaseous mass analyzer being modified to the concentration of gas chromatograph demarcation；
SF is carried out according to the concentration of gaseous mass analyzer amendment6The calculating of gas-insulated switchgear built-in electrical insulation fault diagnosis
Machine；
The output end of electrochemical sensor, the output end of gas chromatograph, the output end of gaseous mass analyzer are connected to meter
Calculation machine.
The gas detecting tube, including：It is passed through the glass tube of gas to be detected；Glass tube both sides are provided with blocking
Thing, the space between tamper set scale as reaction compartment, glass pipe outer wall, in reaction compartment it is corresponding with scale it
Place scribbles indicator, gas to be detected in glass tube by the tamper of side enter in reaction compartment with indicator
Learning reaction makes indicator color change, and the length that indicator color changes is read by scale and obtains SO2It is dense
The concentration of degree or HF.
The indicator is NaOH and iodine.
The electrochemical sensor determines H according to the change for being passed through other semiconductor surfaces following resistance values to be detected2S's contains
Amount, the content of CO gases.
Using helium as carrier gas, the chromatographic peak in gas chromatogram enters the gas chromatograph to each gas component
Row is directly demarcated, so as to obtain CF4、SF6、SO2F2、SOF2、H2O、S2F10And S2OF10Content.
The SF carried out using described device6Gas-insulated switchgear built-in electrical insulation method for diagnosing faults, including：
From SF6Gas to be detected is obtained inside gas-insulated switchgear；
Gas to be detected is passed through gas detecting tube, for SF6Decompose and produce in gas-insulated switchgear running
S02Detected with HF, SO2Being reacted with the indicator in HF and gas detecting tube promotes indicator to change color, passes through
The length of color change reflects corresponding material concentration, and respective concentration value is read from scale；
Using electrochemical sensor to SO2、H2S, CO and HF gas components carry out quantitative detection；
Utilize gas chromatograph while the still undetected CF of detection gas detection pipe, electrochemical sensor4、SF6、
SO2F2、SOF2、H2O、S2F10And S2OF10Gas component content；
Utilize gaseous mass analyzer detection gas detection pipe, the still undetected CF of electrochemical sensor4、SF6、SO2F2、
SOF2、SO2、H2O、S2F10And S2OF10Gas component content, if the gas component content detected detects with gas chromatograph
The difference arrived, then the testing result by gaseous mass analyzer be defined；
Fault diagnosis is carried out according to testing result switching devices built-in electrical insulation situation：
If the SF detected6SOF in gas caused by being decomposed in gas-insulated switchgear running2Content highest
And detected in gas caused by decomposing comprising S2F10And S2OF10Two kinds of products, then current failure type is spark discharge；
If the SF detected6SO in gas caused by being decomposed in gas-insulated switchgear running2F2、SOF2Contain
Amount exceedes setting value, then current failure type is arc discharge；
If the SF detected6H in gas caused by being decomposed in gas-insulated switchgear running2S、CF4Content surpass
Setting value is crossed, then current failure type is damaged for solid insulation.
Beneficial effect：
In faulty equipment operation, due to SF caused by different fault types6Catabolite is different, thus use by
The detection means that gas detecting tube, electrochemical sensor, gas chromatograph and gaseous mass analyzer form carries out qualitative and quantitative inspection
Survey.Electrochemical sensor is corrected using the testing result of gas detecting tube, makes the testing result of electrochemical sensor more
It is accurate to add.Recycle gaseous mass analyzer to be corrected the testing result of gas chromatograph, make the testing result of gas chromatograph
It is more accurate.Utilize the SF in the detection means6After catabolite carries out qualitative and quantitative detection, different electric discharge types are recycled
With the corresponding relation of its caused gas decomposition product, switching devices built-in electrical insulation situation carries out fault diagnosis.
Brief description of the drawings
Fig. 1 is gas detecting tube schematic diagram, wherein 1- glass tubes in the specific embodiment of the invention, and 2- tampers, 3- refers to
Show agent, 4- scales；
Fig. 2 is electrochemical sensor schematic diagram in the specific embodiment of the invention；
Fig. 3 is gas chromatograph schematic diagram in the specific embodiment of the invention；
Fig. 4 is SF in the specific embodiment of the invention6The chromatogram of decomposition gas.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
A kind of SF6Gas-insulated switchgear built-in electrical insulation trouble-shooter, including：
To SF6SO caused by being decomposed in gas-insulated switchgear running2Detected with HF and correct electrochemistry biography
SO in sensor2, HF gas component testing results gas detecting tube；
Detect SF6SO caused by being decomposed in gas-insulated switchgear running2、H2S, CO and HF gas components contain
The electrochemical sensor of amount；
To SF6CF caused by being decomposed in gas-insulated switchgear running4、SF6、SO2F2、SOF2、H2O、S2F10With
And S2OF10The gas chromatograph demarcated of concentration；
The gaseous mass analyzer being modified to the concentration of gas chromatograph demarcation；
SF is carried out according to the concentration of gaseous mass analyzer amendment6The calculating of gas-insulated switchgear built-in electrical insulation fault diagnosis
Machine；
The output end of electrochemical sensor, the output end of gas chromatograph, the output end of gaseous mass analyzer are connected to meter
Calculation machine.
It is as shown in Figure 1 gas detecting tube, including：It is passed through the glass tube 1 of gas to be detected；The inside both sides of glass tube 1 are equal
It is provided with tamper 2, the space between tamper 2 is as reaction compartment, and the outer wall of glass tube 1 sets scale 4, in reaction compartment
Indicator 3 is scribbled with 4 corresponding part of scale, it is empty that gas to be detected enters reaction in glass tube 1 by the tamper 2 of side
Interior the color of indicator 3 is changed with the generation chemical reaction of indicator 3, the length that the color of indicator 3 changes passes through
Scale 4, which is read, obtains SO2Concentration or HF concentration.
SO2All it is highly acid material with HF, HF can react with NaOH, SO2It can be chemically reacted with iodine, because
NaOH and iodine are elected to be indicator 3 by this respectively, and HF and NaOH reacts or SO2Promote indicator when being chemically reacted with iodine
Change color, the length and SO of discoloration2Directly proportional to the material concentration of iodine, concentration value is easily from the surface of gas detecting tube
Read on scale 4, it is simple to operate, accuracy is high.Their chemical equation is
HF+NaOH=NaF+H2The purplish red flavescence of O；
SO2+I2+2H2O=H2SO4+ 2HI indigo plants bleach.
From chemical equation, HF uses acid-base reaction, SO2Using redox reaction, because reaction mechanism is different,
Both materials need not be separated.Gas detecting tube is able to detect that its volume fraction 10-6The SO of level2Or HF, Yin Qijian
Single easy, this method is commercially available by success.But easily influenceed by temperature, humidity and resting period, and
And effect is not detected to other main decomposition gases, it is impossible to react SF comprehensively6Discharge decomposed gas component situation.
Electrochemical sensor as shown in Figure 2 can accurately detect SO2、H2S, CO and HF gas components, but the degree of accuracy is low
In gas detecting tube, therefore, SO will be had been acknowledged2Electrochemical sensor is passed through with the gas of HF contents, according to semiconductor surface
The change of resistance value, determines H2S, the content of CO gases.SO is obtained after testing2、H2S, the content of CO and HF gas components, due to inspection
Survey SO in result2Little deviation be present with gas detecting tube testing result with HF content, utilize gas detecting tube testing result
Electrochemical sensor testing result is corrected, and carries out double measurement, H is drawn by secondary detection2S, the content of CO gases, but still
CF need to further be detected4、SO2F2、SOF2Deng the content of composition.
Gas to be detected is passed through to gas chromatograph as shown in Figure 3, gas chromatograph can detect above two simultaneously
The still undetected CF of instrument4、SF6、SO2F2、SOF2、SO2、H2The important gas component such as O, using helium as carrier gas, chromatogram
Post (capillary column CP-Sil5CB60mtr0.32mm) selects stainless-steel tubing pillar, PorapakQ (80/100 mesh), 3~4m (L) × 3mm
(φ)；Heating chamber program：Initial temperature：60~80 DEG C, final temperature：120~180 DEG C, firing rate：10~20 DEG C/min.
Gas chromatogram as shown in Figure 4 is drawn, the chromatographic peak in gas chromatogram is directly demarcated to each gas component, from
And obtain CF4、SF6、SO2F2、SOF2、H2O、S2F10And S2OF10Content, represent the height of relative amount at any time with voltage U
Between situation of change.CF as can be drawn from Figure 44Content exceeds the scope of IEC2010 standards, because insulation harm occurs for solid
When, decompose generation C and the excessive CF of generation is combined with the F in gas4, therefore judge solid insulation damage inside switchgear be present.
The concentration that gaseous mass analyzer is demarcated to gas chromatograph is modified：If the gas component content and gas phase that detect
The difference that chromatograph detects, then the testing result by gaseous mass analyzer be defined；Gaseous mass analyzer is according to charged particle in electric field
Or in magnetic field the characteristics of motion difference, be isolated by the ratio of its mass-to-charge ratio quality and electric charge, so as to determine the quality of particle and
Its intensity distribution.Gaseous mass analyzer provides element composition, molecular weight, empirical formula and the molecular structure information of compound, and
Because detection speed is fast, high sensitivity and qualitative specificity are strong, color is verified using the gas after mass spectrograph detection chromatograph separation
Spectrometer detects accurately, without correcting double measurement.
The SF carried out using said apparatus6Gas-insulated switchgear built-in electrical insulation method for diagnosing faults, including：
Step 1：From SF6Gas to be detected is obtained inside gas-insulated switchgear.
Step 2：Gas to be detected is passed through gas detecting tube, for SF6Divide in gas-insulated switchgear running
SO caused by solution2Detected with HF, SO2Being reacted with the NaOH in HF and gas detecting tube promotes indicator to change color,
SO2Chemical reaction, which occurs, with the iodine in gas detecting tube promotes indicator to change color, reacts corresponding by the length of discoloration
Material concentration, respective concentration value is read from the figure or marker tape of gas detecting tube.
Step 3：Using electrochemical sensor to SO2、H2S and CO gas components carry out quantitative detection：By gas to be detected
Electrochemical sensor is passed through, semiconductor surface resistance value can change, and contain according to semiconductor surface resistance value with gas component
Relation between amount determines SO2、H2The content of S and CO gas components.
Operation shows that the detection that electrochemical sensor seriously limits this method the cross jamming gas with various is accurate
Property, while the problems such as limited detected components, itself decay, zero point and temperature drift, the life-span is shorter be present, need to be to electrochemical sensing
Device detector is periodically checked, it is ensured that the degree of accuracy of testing result and validity.Table 1 show electrochemical sensor inspection party
Method and test rating, detector divide the inspection body of A classes (being adapted to detect for Hidden fault) and B classes (being adapted to detect for faulty equipment)
System.
The test rating of table 1
Step 4：Utilize gas chromatograph while the still undetected CF of detection gas detection pipe, electrochemical sensor4、
SF6、SO2F2、SOF2、H2O、S2F10And S2OF10Gas component content：Gas to be detected is passed through gas chromatograph, using helium
Gas draws gas chromatogram as carrier gas, each gas component content is directly demarcated according to chromatographic peak, so as to draw CF4、
SF6、8O2F2、SOF2、H2O、S2F10And S2OF10Content；
Gas chromatograph is a kind of separation analytical instrument, has different distribution coefficients in two-phase using different material
(or adsorption coefficient, permeability), when two-phase performs relative motion, these materials carry out repeatedly distributing and realizing repeatedly in two-phase
Separation.By detector and logger, these are turned into chromatographic peak one by one by separated component.Gas chromatograph can be simultaneously
Detect its volume fraction as little as 10-6The CF of level4、SF6、SO2F2、SOF2、SO2、H2The gas components such as O.Gas phase color as shown in Figure 3
Spectrometer is generally made up of following 5 parts：1. carrier gas system (including regulation of source of the gas and flow and measuring cell etc.)；2. sample introduction
System (including sampling device and vaporizer two parts)；3. piece-rate system (mainly chromatographic column)；4. detection, record system (bag
Include detector and logger)；5. accessory system (including temperature control system, data handling system (installation is in a computer) etc.).
Recommended according to IEC60480, use following analysis condition during gas chromatographic analysis：1. carrier gas：Helium or hydrogen (10
~25mL/min)；Flow velocity should be adjusted according to chromatographic column used makes analytical effect optimal；2. chromatographic column：No
Become rusty steel pipe column, PorapakQ (80/100 mesh), 3~4m (L) × 3mm (φ)；3. heating chamber program：Initial temperature：60~80 DEG C,
Final temperature：120~180 DEG C, firing rate：10~20 DEG C/min.
Gas chromatograph needs to demarcate to the concentration of decomposed gas component, can be according to chromatographic peak to each gas component
Directly demarcated, due to the unstability of some decomposition gas compounds so that directly demarcate extremely difficult.So generally make
Indirect calibration is carried out with alternative.
Step 5：Utilize gaseous mass analyzer detection gas detection pipe, the still undetected CF of electrochemical sensor4、SF6、
SO2F2、SOF2、SO2、H2O、S2F10And S2OF10Gas component content, if the gas component content and gas chromatograph that detect
The difference detected, then the testing result by gaseous mass analyzer be defined；
Gaseous mass analyzer be according to the difference of the charged particle characteristics of motion in an electrical or magnetic field, by its mass-to-charge ratio quality and
The ratio of electric charge realizes separation, so as to determine the quality of particle and its intensity distribution.Being mainly characterized by for gaseous mass analyzer can be to
Go out element composition, molecular weight, empirical formula and the molecular structure information of compound, it have detection speed fast, high sensitivity and
The advantages such as qualitative specificity is strong.
Mass spectrography is according to the difference of the charged particle characteristics of motion in an electrical or magnetic field, by its mass-to-charge ratio quality and electric charge
Ratio, realize separation, so as to determine the quality of particle and its intensity distribution.Being mainly characterized by of mass spectrography can provide compound
Element composition, molecular weight, empirical formula and molecular structure information, it has detection speed fast, high sensitivity and qualitative exclusive
Property the advantage such as strong.
Relation between distance that charged ion moves in the electric field and its molecular size range determines by the property of itself,
Wherein
In formula：M represents molecular mass；B represents magnetic field intensity；R represents orbital radius；E is quantities of charge；V represents voltage.
It was found from from formula, molecular mass and directly proportional (Z values are typically taken as 1).
The single isotope matter for being mass particle, detected compound characteristic ion being provided of gaseous mass analyzer measure
Amount, this is its distinctive feature.What high resolution mass spectrometer measured is the accurate mass of ion, can obtain molecule, ion
Element forms and empirical formula.When gaseous mass analyzer detects to unknown compound, because impurity can be to the mass spectrogram of sample
The analysis for being unfavorable for mass spectrogram is had an impact, therefore it is required that the impurity component in detection sample is extremely low.Carry out mass spectroscopy it
Before, gas chromatograph can efficiently separate to mixture, and can obtain the very high sample of purity, meet Mass Spectrometric Identification
The requirement for sample.
Step 6：Fault diagnosis is carried out according to testing result switching devices built-in electrical insulation situation：
If the SF detected6SOF in gas caused by being decomposed in gas-insulated switchgear running2Content highest
And detected in gas caused by decomposing comprising S2F10And S2OF10Two kinds of products, then current failure type is spark discharge；
If the SF detected6SO in gas caused by being decomposed in gas-insulated switchgear running2F2、SOF2Contain
Amount exceedes setting value, then current failure type is arc discharge；
If the SF detected6H in gas caused by being decomposed in gas-insulated switchgear running2S、CF4Content surpass
Setting value is crossed, then current failure type is damaged for solid insulation.
The testing result table of comparisons 2 can be conveniently inferred to SF6Gas-insulated switchgear built-in electrical insulation failure
Type.
The catabolite of table 2 and the fault type table of comparisons
Finally it should be noted that：Described embodiment is only some embodiments of the present application, rather than whole realities
Apply example.Based on the embodiment in the application, those of ordinary skill in the art are obtained under the premise of creative work is not made
Every other embodiment, belong to the protection domain of the application.
Claims (6)
- A kind of 1. SF6Gas-insulated switchgear built-in electrical insulation trouble-shooter, it is characterised in that including：To SF6SO caused by being decomposed in gas-insulated switchgear running2Detected with HF and correct electrochemical sensor Middle SO2, HF gas component testing results gas detecting tube；Detect SF6SO caused by being decomposed in gas-insulated switchgear running2、H2S, CO and HF gas components content Electrochemical sensor；To SF6CF caused by being decomposed in gas-insulated switchgear running4、SF6、SO2F2、SOF2、H2O、S2F10And S2OF10The gas chromatograph demarcated of concentration；The gaseous mass analyzer being modified to the concentration of gas chromatograph demarcation；SF is carried out according to the concentration of gaseous mass analyzer amendment6The computer of gas-insulated switchgear built-in electrical insulation fault diagnosis；The output end of electrochemical sensor, the output end of gas chromatograph, the output end of gaseous mass analyzer are connected to computer.
- 2. device according to claim 1, it is characterised in that the gas detecting tube, including：It is passed through gas to be detected Glass tube (1)；The internal both sides of glass tube (1) are provided with tamper (2), the space between tamper (2) as reaction compartment, Glass tube (1) outer wall sets scale (4), and part corresponding with scale (4) scribbles indicator (3) in reaction compartment, to be detected Gas enters in reaction compartment in glass tube (1) by the tamper (2) of side makes finger with indicator (3) generation chemical reaction Show that agent (3) color changes, the length that indicator (3) color changes is read by scale (4) and obtains SO2Concentration Or HF concentration.
- 3. device according to claim 2, it is characterised in that the indicator (3) is NaOH and iodine.
- 4. device according to claim 1, it is characterised in that the electrochemical sensor is to be detected after other according to being passed through The change of semiconductor surface resistance value determines H2S content, the content of CO gases.
- 5. device according to claim 1, it is characterised in that the gas chromatograph using helium as carrier gas, according to Chromatographic peak in gas chromatogram is directly demarcated to each gas component, so as to obtain CF4、SF6、SO2F2、SOF2、H2O、 S2F10And S2OF10Content.
- 6. the SF carried out using the device described in claim 16Gas-insulated switchgear built-in electrical insulation method for diagnosing faults, its It is characterised by, including：From SF6Gas to be detected is obtained inside gas-insulated switchgear；Gas to be detected is passed through gas detecting tube, for SF6SO caused by being decomposed in gas-insulated switchgear running2 Detected with HF, SO2Being reacted with the indicator in HF and gas detecting tube promotes indicator to change color, passes through color The length of change reflects corresponding material concentration, and respective concentration value is read from scale；Using electrochemical sensor to SO2、H2S, CO and HF gas components carry out quantitative detection；Utilize gas chromatograph while the still undetected CF of detection gas detection pipe, electrochemical sensor4、SF6、SO2F2、 SOF2、H2O、S2F10And S2OF10Gas component content；Utilize gaseous mass analyzer detection gas detection pipe, the still undetected CF of electrochemical sensor4、SF6、SO2F2、SOF2、 SO2、H2O、S2F10And S2OF10Gas component content, if the gas component content detected detects not with gas chromatograph Together, then the testing result by gaseous mass analyzer is defined；Fault diagnosis is carried out according to testing result switching devices built-in electrical insulation situation：If the SF detected6SOF in gas caused by being decomposed in gas-insulated switchgear running2Content highest and point Detected in gas caused by solution comprising S2F10And S2OF10Two kinds of products, then current failure type is spark discharge；If the SF detected6SO in gas caused by being decomposed in gas-insulated switchgear running2F2、SOF2Content exceed Setting value, then current failure type is arc discharge；If the SF detected6H in gas caused by being decomposed in gas-insulated switchgear running2S、CF4Content exceed set Definite value, then current failure type is solid insulation damage.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956872A (en) * | 2018-06-21 | 2018-12-07 | 中国电力科学研究院有限公司 | A kind of couple of SF6The method and system of gas componant on-Line Monitor Device calibration |
| CN109031063A (en) * | 2018-07-23 | 2018-12-18 | 国网河南省电力公司内乡县供电公司 | Based on SF6Gas-insulated class fault remote monitors system and method |
| CN111830016A (en) * | 2020-06-28 | 2020-10-27 | 国家电网有限公司 | Device for rapidly confirming GIS equipment fault air chamber |
| CN113092396A (en) * | 2021-04-01 | 2021-07-09 | 国网陕西省电力公司电力科学研究院 | Gas detection tube determination method and device based on laser method |
| CN114935598A (en) * | 2022-04-06 | 2022-08-23 | 武汉大学 | Detection method for gas-liquid phase product after SF6 degradation |
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| CN111830016A (en) * | 2020-06-28 | 2020-10-27 | 国家电网有限公司 | Device for rapidly confirming GIS equipment fault air chamber |
| CN113092396A (en) * | 2021-04-01 | 2021-07-09 | 国网陕西省电力公司电力科学研究院 | Gas detection tube determination method and device based on laser method |
| CN114935598A (en) * | 2022-04-06 | 2022-08-23 | 武汉大学 | Detection method for gas-liquid phase product after SF6 degradation |
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