WO2010073748A1 - 油入電気機器における異常発生の可能性を予測する方法 - Google Patents
油入電気機器における異常発生の可能性を予測する方法 Download PDFInfo
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- oil
- insulating oil
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- dibenzyl
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000005856 abnormality Effects 0.000 title claims abstract description 21
- GVPWHKZIJBODOX-UHFFFAOYSA-N dibenzyl disulfide Chemical compound C=1C=CC=CC=1CSSCC1=CC=CC=C1 GVPWHKZIJBODOX-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000004458 analytical method Methods 0.000 claims abstract description 15
- QWUWMCYKGHVNAV-UHFFFAOYSA-N 1,2-dihydrostilbene Chemical group C=1C=CC=CC=1CCC1=CC=CC=C1 QWUWMCYKGHVNAV-UHFFFAOYSA-N 0.000 claims description 31
- LUFPJJNWMYZRQE-UHFFFAOYSA-N benzylsulfanylmethylbenzene Chemical compound C=1C=CC=CC=1CSCC1=CC=CC=C1 LUFPJJNWMYZRQE-UHFFFAOYSA-N 0.000 claims description 28
- 230000003247 decreasing effect Effects 0.000 claims description 5
- 238000004587 chromatography analysis Methods 0.000 claims 2
- 239000003921 oil Substances 0.000 description 85
- 230000007797 corrosion Effects 0.000 description 14
- 238000005260 corrosion Methods 0.000 description 14
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 12
- 238000005486 sulfidation Methods 0.000 description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 9
- 239000010949 copper Substances 0.000 description 9
- 229910052717 sulfur Inorganic materials 0.000 description 9
- 239000011593 sulfur Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000006227 byproduct Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000019086 sulfide ion homeostasis Effects 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- SLRMQYXOBQWXCR-UHFFFAOYSA-N 2154-56-5 Chemical compound [CH2]C1=CC=CC=C1 SLRMQYXOBQWXCR-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- -1 benzylsulfenyl radical Chemical class 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- FDPIMTJIUBPUKL-UHFFFAOYSA-N pentan-3-one Chemical compound CCC(=O)CC FDPIMTJIUBPUKL-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000003464 sulfur compounds Chemical class 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- GSNUFIFRDBKVIE-UHFFFAOYSA-N 2,5-dimethylfuran Chemical compound CC1=CC=C(C)O1 GSNUFIFRDBKVIE-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- NOEGNKMFWQHSLB-UHFFFAOYSA-N 5-hydroxymethylfurfural Chemical compound OCC1=CC=C(C=O)O1 NOEGNKMFWQHSLB-UHFFFAOYSA-N 0.000 description 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- RJGBSYZFOCAGQY-UHFFFAOYSA-N hydroxymethylfurfural Natural products COC1=CC=C(C=O)O1 RJGBSYZFOCAGQY-UHFFFAOYSA-N 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- FILUFGAZMJGNEN-UHFFFAOYSA-N pent-1-en-3-yne Chemical group CC#CC=C FILUFGAZMJGNEN-UHFFFAOYSA-N 0.000 description 1
- PMJHHCWVYXUKFD-UHFFFAOYSA-N penta-1,3-diene Chemical compound CC=CC=C PMJHHCWVYXUKFD-UHFFFAOYSA-N 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007655 standard test method Methods 0.000 description 1
- SEEPANYCNGTZFQ-UHFFFAOYSA-N sulfadiazine Chemical compound C1=CC(N)=CC=C1S(=O)(=O)NC1=NC=CC=N1 SEEPANYCNGTZFQ-UHFFFAOYSA-N 0.000 description 1
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N valeric aldehyde Natural products CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2835—Specific substances contained in the oils or fuels
- G01N33/287—Sulfur content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
- G01N2030/8809—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample
- G01N2030/884—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample organic compounds
- G01N2030/8854—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample organic compounds involving hydrocarbons
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/72—Mass spectrometers
- G01N30/7206—Mass spectrometers interfaced to gas chromatograph
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/404—Protective devices specially adapted for fluid filled transformers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
Definitions
- the present invention relates to a method for predicting the possibility of occurrence of abnormality in sulfidation corrosion of oil-filled electrical equipment such as a transformer, and more specifically, insulation of a reaction product of a sulfur compound that causes sulfidation corrosion and copper.
- the present invention relates to a method for predicting the possibility of occurrence of abnormality due to sulfide corrosion from the concentration in oil.
- Some oil-filled electrical devices such as oil-filled transformers contain sulfur components as their insulating oil.
- conductive copper sulfide is generated (sulfurized corrosion) due to the reaction between the copper components of the oil-filled electrical equipment and the sulfur component in the insulation oil, adheres to the insulation paper, etc., and causes oil breakdown. It is known to cause fatal damage.
- the details of the generation mechanism are not known, and it is difficult to diagnose whether there is an abnormality in the oil-filled electrical device due to the production of copper sulfide without stopping the existing oil-filled electrical device. For this reason, in order to avoid problems in various places due to sulfidation corrosion, it is currently necessary to rely on the development of oil-filled electrical equipment that is less susceptible to sulfidation corrosion.
- the development of oil-filled electrical devices that are less susceptible to sulfidation corrosion includes the selection of insulating oils that are less susceptible to sulfidation corrosion and the development of technologies for removing sulfur compounds from insulation oils.
- Patent Document 2 Japanese Patent Laid-Open No. 9-72892 (Claim 2)).
- Patent Document 3 discloses a method in which the following compounds are used for abnormality diagnosis of oil-filled electrical equipment such as oil-filled transformers, reactors, automatic voltage regulators, and oil-immersed cables. Carbon dioxide [CO 2 ], carbon monoxide [CO], methane [CH 4 ], oil-filled electrical equipment such as oil-filled transformers, reactors, automatic voltage regulators, etc. Estimate deterioration status and diagnose abnormalities of oil-filled electrical equipment from various gas quantities such as hydrogen [H 2 ], ethane [C 2 H 6 ], ethylene [C 2 H 4 ], acetylene [C 2 H 2 ] A method of performing this is disclosed (Patent Document 3: Japanese Patent Laid-Open No. 2000-241401 (page 2 [0006])).
- Patent Documents 4 and 5 disclose a method for diagnosing an abnormality of an insulating member of an oil-filled electrical device by quantifying hydroxymethylfurfural or furfural in oil and using it as a deterioration index of insulating paper (Patent Document).
- Patent Document 4 Japanese Patent Application Laid-Open No. 5-315147 (2 page claims 1 to 3)
- Patent Document 5 Japanese Patent Application Laid-Open No. 8-124751 (2 page claims 2)).
- JP 7-335446 A JP-A-9-72892 JP 2000-241401 A JP-A-5-315147 JP-A-8-124751
- the present invention has an object to provide a method for predicting the possibility of a failure due to copper sulfide generation in the oil-filled electrical equipment in the future by analyzing the current oil-filled electrical equipment.
- the present inventors estimated the initial concentration of the causative substance of copper sulfide generation contained in the insulating oil from the analysis of the aged oil, and estimated the initial concentration of the causative substance from the oil-filled electricity. We found a method that can predict the possibility of malfunctions due to copper sulfide generation in equipment.
- the present invention is a method for predicting the possibility of occurrence of an abnormality in an oil-filled electrical device, and from the component analysis of insulating oil collected from an operating transformer, dibenzyl when not used in the insulating oil.
- This is a prediction method for calculating an estimated value of disulfide (hereinafter abbreviated as DBDS) concentration and predicting the possibility of occurrence of an abnormality in an oil-filled electrical device from the level of the estimated value.
- DBDS disulfide
- the concentration of bibenzyl hereinafter abbreviated as BiBZ
- DBS dibenzyl sulfide
- the amount of decrease in the dibenzyl disulfide concentration from the unused time in the insulating oil is preferable to calculate an estimated value of the dibenzyl disulfide concentration when not used in the insulating oil.
- the amount of dibenzyl disulfide decreased and the amount of bibenzyl and / or dibenzyl sulfide produced after a certain period of time in the insulating oil to which dibenzyl disulfide was added in advance were changed by changing the elapsed time and temperature conditions.
- the amount of dibenzyl disulfide decreased at each temperature and the amount of bibenzyl and / or dibenzyl sulfide produced at each temperature were created, Based on the relational expression, from the temperature condition of the insulating oil and the concentration of bibenzyl and / or dibenzyl sulfide in the insulating oil determined by component analysis in the insulating oil, from the unused time in the insulating oil. It is preferable to calculate an estimated value of the amount of decrease in dibenzyl disulfide concentration.
- the concentration of dibenzyl disulfide in the insulating oil and the concentration of bibenzyl and / or dibenzyl sulfide in the insulating oil are determined by gas chromatography.
- the present invention it is possible to predict the amount of copper sulfide generated due to aging degradation of oil-filled electrical equipment, and predict the possibility of occurrence of abnormality due to sulfide corrosion of aged oil-filled electrical equipment. .
- the benzyl radical and the benzylsulfenyl radical each react with each other or both to produce bibenzyl, dibenzyl sulfide and DBDS. Therefore, by quantifying bibenzyl and dibenzyl sulfide, the consumption (reduction amount) of DBDS can be estimated, and the sum of the estimated DBDS reduction amount thus obtained and the residual DBDS amount obtained by analysis. From this, the initial concentration of DBDS can be estimated.
- Bibenzyl and dibenzyl sulfide can be quantified by various known analytical methods, and examples of the analytical method include gas chromatography.
- a corrosion test is performed using insulating oils having different initial concentrations of DBDS, and the concentration of DBDS is determined based on the results.
- concentration of DBDS is determined based on the results.
- Examples of the insulating oil contained in the oil-filled electrical device to which the present invention is applied include mineral oil, synthetic oil containing a sulfur component, and the like, and insulating oil containing a sulfur component is preferable.
- the DBDS, dibenzyl sulfide and bibenzyl contained in the transformer oil after heating can be analyzed with a gas chromatograph / mass spectrometer (GC / MS) to determine the concentration of these compounds.
- GC / MS gas chromatograph / mass spectrometer
- FIG. 1 shows data when the initial concentration of DBDS is 30 ppm and 300 ppm.
- the estimated value of the decrease in DBDS can be obtained from a relational expression created in advance.
- the initial estimated value of the DBDS concentration can be obtained from the sum of the quantitative value of the concentration of DBDS remaining in the transformer oil and the estimated value of the amount of decrease in DBDS.
- an estimated value of the initial concentration of DBDS can be obtained by measuring the concentration of dibenzyl sulfide (ie, the amount of DBS produced) in the insulating oil.
- FIG. 2 shows the relationship between the dibenzyl sulfide concentration (unit: ppm) and the amount of decrease in the DBDS concentration (unit: ppm).
- FIG. 1 shows data when the initial concentration of DBDS is 30 ppm and 300 ppm. “Linear (300 ppm)” in the figure is the minimum based on the data when the initial concentration of DBDS is 300 ppm.
- the estimated value of the amount of decrease in DBDS can be obtained from a relational expression prepared in advance. Then, an initial estimated value of the DBDS concentration can be obtained from the sum of the quantitative value of the concentration of DBDS remaining in the transformer oil and the estimated value of the amount of decrease in DBDS.
- the relationship between the by-product (meaning bibenzyl and / or dibenzyl sulfide; the same applies hereinafter) and the amount of DBDS reduction is a function of temperature. Therefore, if the temperature dependence of this relationship is examined in advance, the relationship between the amount of by-products and the DBDS at an arbitrary temperature can be obtained.
- FIG. 3 is a graph showing the relationship between the slope (DBDS decrease amount / BiBZ generation amount weight ratio) and temperature when the relationship between the bibenzyl amount and the DBDS decrease amount is plotted.
- y 0.1757x + 29.506 (in the expression)
- Y is a slope
- x is a temperature
- the amount of by-product contained in the aging transformer oil and the residual amount of DBDS are quantified, the consumption of DBDS is calculated by the product of the slope and the amount of by-products, and the sum of this consumption amount and the residual amount of DBDS. By calculating the above, an estimated value of the initial concentration of DBDS can be obtained.
- the quantitative value of DBDS residual amount
- the quantitative value of dibenzyl sulfide The estimated value of the initial concentration of DBDS can be determined from the amount of by-products. Further, for example, when there is a good correlation between the molar equivalent of bibenzyl and the molar equivalent of dibenzyl sulfide and the amount of DBDS reduction, the DBDS can be calculated from the quantitative values of bibenzyl and dibenzyl sulfide and the quantitative values of DBDS. It is also possible to obtain an estimated value of the initial concentration.
- the initial amount of DBDS in the insulating oil is proportional to the amount of copper sulfide produced, but the threshold of the initial amount of DBDS varies depending on the structure and material of the oil-filled electrical device. For example, when the thickness of the insulator is sufficient, the permissible value for the amount of copper sulfide generated increases, and therefore the threshold value is set high. Conversely, when the thickness of the insulator is thin, the threshold is set low.
- Specific methods for setting the threshold include, for example, a method of determining the threshold in a test widely used as a test for corrosive sulfur of insulating oil. Examples of this type of test include JIS C 2101 17 (corrosive sulfur test) which is a JIS standard test method in Japan, and ASTM D 1275B which is a test method of ASTM (American Testing and Materials Association) overseas. It is often used.
- the threshold can be determined by the following procedure.
- an insulating oil that does not exhibit corrosiveness according to 17 of JIS C 2101 is prepared.
- a synthetic oil containing no sulfur such as alkylbenzene and ⁇ -olefin is suitable.
- a predetermined amount of DBDS is dissolved in this insulating oil to obtain a sample oil.
- the sample oil thus prepared is tested by the method described in 17.2 to 17.5 of JIS C 2101, and the corrosivity is judged by the method described in 17.6.
- the sample oil containing 50 and 100 ppm of DBDS exhibits non-corrosiveness.
- 100 ppm which is the upper limit showing non-corrosiveness is set as a threshold value. If the estimated value of the initial concentration of DBDS in the insulating oil of the oil-filled electrical equipment is higher than this, take measures such as calling attention because the oil-filled electrical equipment may cause problems with copper sulfide. It can be carried out.
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Abstract
Description
前記絶縁油中の成分分析により定量したジベンジルジスルフィドの濃度に該減少量の推定値を加えることにより、
前記絶縁油中の未使用時におけるジベンジルジスルフィド濃度の推測値を算出することが好ましい。
該関係式に基づいて、前記絶縁油の温度条件と、前記絶縁油中の成分分析により定量した前記絶縁油中のビベンジルおよび/またはジベンジルスルフィドの濃度から、前記絶縁油中の未使用時からのジベンジルジスルフィド濃度の減少量の推定値を算出することが好ましい。
以下に具体的な検討結果により、本発明の手順を示す。
Claims (6)
- 油入電気機器における異常発生の可能性を予測する方法であって、
稼動中の変圧器から採取した絶縁油の成分分析から、該絶縁油中の未使用時におけるジベンジルジスルフィド濃度の推測値を算出し、この推測値の高低から油入電気機器における異常発生の可能性を予測する予測方法。 - 前記絶縁油の成分分析により、前記絶縁油中のビベンジルおよび/またはジベンジルスルフィドの濃度と、ジベンジルジスルフィドの濃度とを定量する、請求の範囲1に記載の予測方法。
- 前記絶縁油中の成分分析により定量した前記絶縁油中のビベンジルおよび/またはジベンジルスルフィドの濃度から、前記絶縁油中の未使用時からのジベンジルジスルフィド濃度の減少量の推定値を算出し、
前記絶縁油中の成分分析により定量したジベンジルジスルフィドの濃度に該減少量の推定値を加えることにより、
前記絶縁油中の未使用時におけるジベンジルジスルフィド濃度の推測値を算出する、請求の範囲2に記載の予測方法。 - あらかじめ、ジベンジルジスルフィドを添加した絶縁油中の一定時間経過後のジベンジルジスルフィドの減少量とビベンジルおよび/またはジベンジルスルフィドの生成量とを、経過時間および温度条件を変化させて定量することにより、各温度におけるジベンジルジスルフィドの減少量とビベンジルおよび/またはジベンジルスルフィドの生成量との関係式を作成し、
該関係式に基づいて、前記絶縁油の温度条件と、前記絶縁油中の成分分析により定量した前記絶縁油中のビベンジルおよび/またはジベンジルスルフィドの濃度から、前記絶縁油中の未使用時からのジベンジルジスルフィド濃度の減少量の推定値を算出する、請求の範囲3に記載の予測方法。 - ガスクロマトグラフ法を用いて、前記絶縁油中のジベンジルジスルフィドの濃度を定量する、請求の範囲1に記載の予測方法。
- ガスクロマトグラフ法を用いて、前記絶縁油中のビベンジルおよび/またはジベンジルスルフィドの濃度を定量する、請求の範囲1に記載の予測方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09834554A EP2372727A1 (en) | 2008-12-25 | 2009-04-21 | Method for predicting the probability of abnormality occurrence in oil-filled electrical apparatus |
JP2010543936A JP5111619B2 (ja) | 2008-12-25 | 2009-04-21 | 油入電気機器における異常発生の可能性を予測する方法 |
CN2009801522913A CN102265357B (zh) | 2008-12-25 | 2009-04-21 | 预测油浸电气设备中异常发生的可能性的方法 |
US13/132,617 US20110246149A1 (en) | 2008-12-25 | 2009-04-21 | Method for predicting possibility of occurrence of anomaly in oil-filled electrical apparatus |
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EP (1) | EP2372727A1 (ja) |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2012081073A1 (ja) * | 2010-12-13 | 2012-06-21 | 三菱電機株式会社 | 電気絶縁油の検査方法、電気絶縁油の処理方法、および、油入電気機器のメンテナンス方法 |
JP2012156232A (ja) * | 2011-01-25 | 2012-08-16 | Mitsubishi Electric Corp | 油入電気機器の診断方法 |
JP5079936B1 (ja) * | 2011-11-28 | 2012-11-21 | 三菱電機株式会社 | 油入電気機器の診断方法 |
US8423301B2 (en) | 2010-02-17 | 2013-04-16 | Mitsubishi Electric Corporation | Lifetime assessment apparatus and method for oil-filled electrical device, and degradation suppression apparatus and method for oil-filled electrical device |
JP5329008B1 (ja) * | 2012-11-20 | 2013-10-30 | 三菱電機株式会社 | 油入電気機器の診断方法およびメンテナンス方法 |
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CN103969246A (zh) * | 2014-05-21 | 2014-08-06 | 国家电网公司 | 一种定量检测矿物绝缘油中腐蚀性硫含量的方法 |
CN105974042A (zh) * | 2016-07-20 | 2016-09-28 | 黑龙江省电力科学研究院 | 一种测定绝缘油中二苄基二硫醚含量的反向高效液相色谱方法 |
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- 2009-04-21 WO PCT/JP2009/057890 patent/WO2010073748A1/ja active Application Filing
- 2009-04-21 CN CN2009801522913A patent/CN102265357B/zh not_active Expired - Fee Related
- 2009-04-21 US US13/132,617 patent/US20110246149A1/en not_active Abandoned
- 2009-04-21 JP JP2010543936A patent/JP5111619B2/ja not_active Expired - Fee Related
- 2009-04-21 EP EP09834554A patent/EP2372727A1/en not_active Withdrawn
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JPH05315147A (ja) | 1992-05-06 | 1993-11-26 | Mitsubishi Electric Corp | 油入電気機器の診断方法および診断装置 |
JPH07335446A (ja) | 1994-06-14 | 1995-12-22 | Mitsubishi Electric Corp | 絶縁油及び油入電気機器の診断方法 |
JPH08124751A (ja) | 1994-10-25 | 1996-05-17 | Mitsubishi Electric Corp | 油入電気機器の寿命及び異常診断方法 |
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US8423301B2 (en) | 2010-02-17 | 2013-04-16 | Mitsubishi Electric Corporation | Lifetime assessment apparatus and method for oil-filled electrical device, and degradation suppression apparatus and method for oil-filled electrical device |
WO2012081073A1 (ja) * | 2010-12-13 | 2012-06-21 | 三菱電機株式会社 | 電気絶縁油の検査方法、電気絶縁油の処理方法、および、油入電気機器のメンテナンス方法 |
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JP5079936B1 (ja) * | 2011-11-28 | 2012-11-21 | 三菱電機株式会社 | 油入電気機器の診断方法 |
JP5329008B1 (ja) * | 2012-11-20 | 2013-10-30 | 三菱電機株式会社 | 油入電気機器の診断方法およびメンテナンス方法 |
Also Published As
Publication number | Publication date |
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EP2372727A1 (en) | 2011-10-05 |
JP5111619B2 (ja) | 2013-01-09 |
US20110246149A1 (en) | 2011-10-06 |
CN102265357B (zh) | 2013-06-12 |
CN102265357A (zh) | 2011-11-30 |
JPWO2010073748A1 (ja) | 2012-06-14 |
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