WO2011152177A1 - 油入電気機器の診断方法および診断装置 - Google Patents
油入電気機器の診断方法および診断装置 Download PDFInfo
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- WO2011152177A1 WO2011152177A1 PCT/JP2011/060768 JP2011060768W WO2011152177A1 WO 2011152177 A1 WO2011152177 A1 WO 2011152177A1 JP 2011060768 W JP2011060768 W JP 2011060768W WO 2011152177 A1 WO2011152177 A1 WO 2011152177A1
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- oil
- filled electrical
- tert
- copper sulfide
- butyl
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000003745 diagnosis Methods 0.000 title claims abstract description 12
- GVPWHKZIJBODOX-UHFFFAOYSA-N dibenzyl disulfide Chemical compound C=1C=CC=CC=1CSSCC1=CC=CC=C1 GVPWHKZIJBODOX-UHFFFAOYSA-N 0.000 claims abstract description 144
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 claims abstract description 91
- 150000001875 compounds Chemical class 0.000 claims abstract description 42
- 239000007795 chemical reaction product Substances 0.000 claims abstract description 41
- SKDGWNHUETZZCS-UHFFFAOYSA-N 2,3-ditert-butylphenol Chemical compound CC(C)(C)C1=CC=CC(O)=C1C(C)(C)C SKDGWNHUETZZCS-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000011156 evaluation Methods 0.000 claims abstract description 16
- 230000019086 sulfide ion homeostasis Effects 0.000 claims description 28
- QWQNFXDYOCUEER-UHFFFAOYSA-N 2,3-ditert-butyl-4-methylphenol Chemical compound CC1=CC=C(O)C(C(C)(C)C)=C1C(C)(C)C QWQNFXDYOCUEER-UHFFFAOYSA-N 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 20
- 230000005856 abnormality Effects 0.000 claims description 18
- 238000002405 diagnostic procedure Methods 0.000 claims description 15
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 claims description 8
- 238000007348 radical reaction Methods 0.000 claims description 5
- LUFPJJNWMYZRQE-UHFFFAOYSA-N benzylsulfanylmethylbenzene Chemical compound C=1C=CC=CC=1CSCC1=CC=CC=C1 LUFPJJNWMYZRQE-UHFFFAOYSA-N 0.000 claims description 4
- HTMQZWFSTJVJEQ-UHFFFAOYSA-N benzylsulfinylmethylbenzene Chemical compound C=1C=CC=CC=1CS(=O)CC1=CC=CC=C1 HTMQZWFSTJVJEQ-UHFFFAOYSA-N 0.000 claims description 4
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 claims description 4
- 239000012502 diagnostic product Substances 0.000 claims 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 abstract description 43
- 230000007257 malfunction Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 140
- 239000000123 paper Substances 0.000 description 44
- 101000823778 Homo sapiens Y-box-binding protein 2 Proteins 0.000 description 40
- 150000003254 radicals Chemical class 0.000 description 40
- 239000010949 copper Substances 0.000 description 21
- 238000012360 testing method Methods 0.000 description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 14
- 229910052802 copper Inorganic materials 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
- 238000009413 insulation Methods 0.000 description 9
- 238000004804 winding Methods 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 7
- -1 benzylsulfenyl radical Chemical class 0.000 description 7
- 239000004020 conductor Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 6
- QWUWMCYKGHVNAV-UHFFFAOYSA-N 1,2-dihydrostilbene Chemical group C=1C=CC=CC=1CCC1=CC=CC=C1 QWUWMCYKGHVNAV-UHFFFAOYSA-N 0.000 description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- SLRMQYXOBQWXCR-UHFFFAOYSA-N 2154-56-5 Chemical compound [CH2]C1=CC=CC=C1 SLRMQYXOBQWXCR-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 4
- 239000003963 antioxidant agent Substances 0.000 description 4
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000002480 mineral oil Substances 0.000 description 3
- 235000010446 mineral oil Nutrition 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- GSNUFIFRDBKVIE-UHFFFAOYSA-N 2,5-dimethylfuran Chemical compound CC1=CC=C(C)O1 GSNUFIFRDBKVIE-UHFFFAOYSA-N 0.000 description 2
- GJYCVCVHRSWLNY-UHFFFAOYSA-N 2-butylphenol Chemical compound CCCCC1=CC=CC=C1O GJYCVCVHRSWLNY-UHFFFAOYSA-N 0.000 description 2
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 2
- KPRAXVJDAWJKMK-UHFFFAOYSA-N 4-benzyl-2,6-ditert-butyl-4-methylcyclohexa-2,5-dien-1-one Chemical compound C1=C(C(C)(C)C)C(=O)C(C(C)(C)C)=CC1(C)CC1=CC=CC=C1 KPRAXVJDAWJKMK-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
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 229930003836 cresol Natural products 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000002655 kraft paper Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- FDPIMTJIUBPUKL-UHFFFAOYSA-N pentan-3-one Chemical compound CCC(=O)CC FDPIMTJIUBPUKL-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011896 sensitive detection Methods 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000012631 diagnostic technique Methods 0.000 description 1
- 239000010735 electrical insulating oil Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- FILUFGAZMJGNEN-UHFFFAOYSA-N pent-1-en-3-yne Chemical group CC#CC=C FILUFGAZMJGNEN-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N valeric aldehyde Natural products CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/18—Sulfur containing
- Y10T436/182—Organic or sulfhydryl containing [e.g., mercaptan, hydrogen, sulfide, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/20—Oxygen containing
- Y10T436/203332—Hydroxyl containing
Definitions
- the present invention relates to an abnormality diagnosis for sulfide corrosion of a transformer, and more particularly to a technique for predicting the formation of copper sulfide on insulating paper.
- Sulfide corrosion is a phenomenon in which conductive copper sulfide is generated by a reaction between copper, which is a transformer material, and a sulfur component in insulating oil. Since this copper sulfide is a semiconductor, if it adheres to an insulator, insulation performance will fall. In particular, in large transformers and the like, since insulating paper is used for coil insulation, when copper sulfide adheres to the insulating paper, which is an insulator, a short circuit occurs between the coils, and the transformer is destroyed. However, the details of the generation mechanism were not known, and there was no effective diagnostic technique for existing transformers.
- the amount of copper sulfide generated in the existing transformer can be predicted by collecting insulating oil from the existing transformer in operation. Benzyl radical and benzylsulfenyl radical react with each other and with each other to produce bibenzyl, dibenzyl sulfide and dibenzyl disulfide as by-products. Information on the production of copper sulfide can be obtained by analysis of these by-products.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2010-10439.
- acetic acid, 3-pentanone, 2,5-dimethylfuran, butyraldehyde, 2-methoxyethanol, methanethiol which is not detected from normal oil-filled electrical equipment during operation and is easily detected only when overheating or abnormal discharge occurs.
- Oil-filled electrical equipment characterized by diagnosing overheating abnormality or electric discharge abnormality inside the equipment based on the presence or absence of detection of dimethyl sulfide, ammonia, 1,3-diazine, methylvinylacetylene, 2-methyl-1,3-butadiene
- An internal abnormality diagnosis method is known (Patent Document 3: Claim 2 of JP-A-9-72892, etc.).
- JP 2010-10439 A US Patent Application Publication No. 2008/0251424 JP-A-9-72892
- the present invention is a diagnostic method for oil-filled electrical equipment for evaluating the risk of copper sulfide generation in oil-filled electrical equipment, A first step of detecting a specific compound contained in the insulating oil in the oil-filled electrical device; A second step for evaluating the possibility of copper sulfide generation in the oil-filled electrical device based on the detection result obtained in the first step; A third step of diagnosing the risk of occurrence of abnormality in the oil-filled electrical device based on the evaluation result obtained in the second step,
- the specific compound includes dibenzyl disulfide and / or a reaction product of a radical generated from dibenzyl disulfide, Reaction products of radicals generated from di-tert-butyl-paracresol and / or di-tert-butyl-paracresol, or from di-tert-butyl-phenol and / or di-tert-butyl-phenol Including radical reaction products, This is a diagnostic method for oil-filled electrical equipment.
- the reaction product of radicals generated from the dibenzyl disulfide is preferably at least one compound selected from the group consisting of benzaldehyde, benzyl alcohol, bibenzyl, dibenzyl sulfide and dibenzyl sulfoxide.
- the specific compound is a reaction product of a radical generated from dibenzyl disulfide and a radical generated from di-tert-butyl-paracresol, or a radical generated from dibenzyl disulfide and di-tert-butyl-phenol. It is preferable that a reaction product with the radical to be included is included.
- the second step when the specific compound is detected in the first step, it is evaluated that the possibility of copper sulfide generation in the oil-filled electrical device is high.
- the third step when it is evaluated that the possibility of copper sulfide formation is high in the second step, it is preferable to diagnose that the risk of occurrence of abnormality in the oil-filled electrical device is high.
- the copper sulfide generation in the oil-filled electrical device is preferably copper sulfide generation on the surface of the insulating paper.
- the diagnostic method of the present invention not only dibenzyl disulfide but also di-tert-butyl-paracresol or di-tert-butyl in the analysis of insulating oil collected from existing oil-filled electrical equipment (such as a transformer). -By detecting (measuring) phenol as well, it is possible to accurately evaluate the risk of copper sulfide formation on the surface of insulating paper such as coils immersed in insulating oil in oil-filled electrical equipment. Is played.
- DBDS dibenzyl disulfide
- DBDS-Cu complex decomposes into benzyl radicals and benzylsulfenyl radicals and copper sulfide.
- the DBDS-Cu complex is a complex and exhibits oil solubility, it can move from the copper plate surface to the insulating paper and be adsorbed on the insulating paper surface.
- the DBDS-Cu complex undergoes a reaction that decomposes into benzyl radicals and benzylsulfenyl radicals and copper sulfide on the surface of the insulating paper, copper sulfide is generated on the surface of the insulating paper.
- the diagnostic method of the present invention comprises a reaction product of a radical generated from di-tert-butyl-paracresol and / or di-tert-butyl-paracresol (or di-tert-butyl-phenol and / or di-tert).
- the reaction product of radicals generated from butyl-phenol is detected.
- di-tert-butyl-paracresol is preferably 2,6-di-tert-butyl-paracresol (DBPC).
- DBDS, DBPC and DBP can be detected by existing technology. For example, if a gas chromatograph / mass spectrometer is used, it can be quantified up to 0.1 ppmw.
- the diagnostic method of the present embodiment is a diagnostic method for an oil-filled electrical device that evaluates the risk of copper sulfide generation on the surface of insulating paper such as a coil in the oil-filled electrical device.
- the second step when the specific compound is detected in the first step, it is evaluated that the possibility of copper sulfide generation in the oil-filled electrical device is high. Further, in the third step, when it is evaluated that the possibility of copper sulfide generation is high in the second step, it is diagnosed that the risk of occurrence of abnormality in the oil-filled electrical device is high.
- DBPC and DBDS are detected (measured) as specific compounds.
- the present embodiment is a diagnostic method different from that of the first embodiment in that DBPC and a reaction product of radicals generated from DBDS are measured as the specific compound, and otherwise the same as in the first embodiment.
- DBDS and DBPC in the insulating oil are gradually consumed by using the insulating oil in the transformer. For this reason, even if the insulating oil contains DBPC and DBDS before use, DBDS and DBPC may not be detected when only DBDS and DBPC are measured after long-term use of the insulating oil. In such a case, there is a possibility that the risk is diagnosed as low risk, where it should be diagnosed as high risk.
- radical reaction products generated from DBDS include benzaldehyde, benzyl alcohol, bibenzyl, dibenzyl (mono) sulfide, and dibenzyl sulfoxide. These compounds can be analyzed using, for example, gas chromatography / mass spectrometry.
- FIG. 1 shows the reduction amount (consumption) of DBDS and the reaction products (benzaldehyde, benzyl alcohol, bibenzyl, dibenzyl (mono) sulfide and dibenzylsulfoxide) in sample oils A and B of Test Example 1 described later.
- the relationship with the total amount is shown.
- FIG. 1 there is a correlation between the total amount of these reaction products and the decrease in benzyl sulfide. For this reason, even if DBDS is not detected, it can be determined that DBDS has been added if these compounds are detected.
- DBPC The detection of DBPC is based on whether the reaction product of DBPC and peroxy radical is analyzed using an appropriate analysis method, for example, a gas chromatograph mass spectrometer. I can judge. It is well known that DBPC easily becomes a radical as shown in FIG. 2A or 2B and reacts with radicals such as peroxy radicals.
- Embodiment 3 This embodiment is different from Embodiments 1 and 2 in that a reaction product of a radical generated from DBPC and a radical generated from DBDS is measured as the specific compound. It is the same diagnostic method.
- reaction product of radicals generated from DBPC and radicals generated from DBDS is measured in the diagnostic method of the present invention by “the reaction product of radicals generated from dibenzyl disulfide and di-tert-butyl-para This corresponds to measurement of a “specific compound containing a reaction product of a radical generated from cresol”. That is, “a specific compound containing a reaction product of a radical generated from dibenzyl disulfide and a reaction product of a radical generated from di-tert-butyl-paracresol” is detected by detecting a radical generated from dibenzyl disulfide.
- a compound having a molecular weight of 310 is detected when the electrical insulating oil is analyzed with a gas chromatograph / mass spectrometer (GC / MS).
- the compound having a molecular weight of 310 is considered to be, for example, 4-benzyl-2,6-di-tert-butyl-4-methyl-2,5-cyclohexadienone (the structural formula is shown in FIG. 3).
- the compound is a reaction product of a radical generated from DBPC and a benzyl radical which is a radical generated from DBDS. Similar to the first embodiment in which DBPC and DBDS are detected only by detecting the compound, the risk of copper sulfide generation in the oil-filled electrical device can be evaluated.
- the diagnosis method of the present embodiment even if DBDS and DBPC are consumed for the production of copper sulfide or the like due to the long-term use of insulating oil, the insulating paper in the oil-filled electrical device is applied as in the first embodiment. It can be judged that there is a high risk of copper sulfide adhering. Moreover, an oil-filled electrical device can be diagnosed simply by measuring only one type of compound.
- DBDS and DBPC in insulating oil are detected, and 4-benzyl-2,6-di-tert-butyl-4-methyl-2,5-cyclohexadienone or the like is detected.
- the risk of copper sulfide generation in an oil-filled electrical device may be evaluated by detecting a reaction product of a radical generated from the DBDS and a radical generated from DBPC. In this case, since the concentration of DBDS and DBPC in the insulating oil before use can be estimated more accurately, the risk of copper sulfide generation on the surface of insulating paper in oil-filled electrical equipment should be more accurately evaluated. Can do.
- Embodiments 1 to 3 described above even when DBP is used as a detection target instead of DBPC, the risk of copper sulfide generation on the surface of insulating paper such as a coil immersed in insulating oil in oil-filled electrical equipment Can be accurately evaluated.
- the present embodiment is an embodiment of a diagnostic apparatus for realizing the method for diagnosing oil-filled electrical equipment in the above-described embodiment.
- FIG. 4 the block diagram of the diagnostic apparatus of the oil-filled electrical equipment of this embodiment is shown.
- diagnostic device 101 includes piping 2, tank 3, oil collecting device 4, pretreatment device 5, detection unit 6, evaluation unit 7, diagnostic unit 8, and display device 9. Is provided.
- FIG. 5 is a cross-sectional view illustrating a configuration example of the oil-filled electrical device illustrated in FIG.
- oil-filled electrical device 1 is, for example, a transformer, and includes a tank 50, iron cores 51 and 52, a coil 53, a cooler 54, and insulating oil 55.
- the iron cores 51 and 52 and the coil 53 are stored in the tank 50.
- the coil 53 is surrounded by the iron cores 51 and 52.
- the inside of the tank 50 is filled with insulating oil 55. Therefore, the coil 53 is immersed in the insulating oil 55.
- the insulating oil 55 is circulated in the oil-filled electrical device 1 by the pump 56. As indicated by the arrows in FIG. 5, the insulating oil 55 leaves the tank 50 and is cooled by the cooler 54. The cooled insulating oil 55 returns to the tank 50.
- the insulating oil 55 is, for example, mineral oil or synthetic oil.
- the coil 53 includes a plurality of winding layers stacked in one direction.
- FIG. 6 is a plan view showing one of a plurality of winding layers constituting the coil.
- FIG. 7 is a cross-sectional view showing a cross section taken along line AA of the winding layer shown in FIG.
- the winding layer 53P is constituted by a paper winding conductor 53L.
- the paper-wrapped conductor 53L is wound spirally in the same plane.
- the paper-wrapped conductor 53L includes a conductor 53M containing copper and an insulating paper 53N that covers the conductor 53M.
- the insulating paper 53N contains cellulose molecules.
- the tank 3 is connected to the oil-filled electrical device 1 by the pipe 2.
- the oil collecting device 4 is a pump, for example, and collects the insulating oil in the tank 3.
- the insulating oil in the tank 3 is used for detection of a specific compound by the detection unit 6.
- the pretreatment device 5 performs pretreatment of the insulating oil before the insulating oil in the tank 3 is sent to the detection unit 6. In the detection unit 6, the residual concentration of the specific compound is measured.
- the evaluation unit 7 and the diagnostic unit 8 are configured by a computer, for example, and execute arithmetic processing based on a map and a program stored therein. Specifically, the evaluation unit 7 receives the measurement value of the specific compound from the detection unit 6 and evaluates the possibility of copper sulfide generation in the oil-filled electrical device. The diagnosis unit 8 receives the evaluation result of the evaluation unit 7 and diagnoses the risk of occurrence of abnormality in the oil-filled electrical device electricity.
- the display device 9 displays the diagnosis result of the diagnosis unit 8, that is, the risk of occurrence of abnormality of the oil-filled electrical device on a screen (not shown). Thereby, it becomes possible to grasp the diagnosis result by the diagnosis apparatus 101.
- sample oil A a naphthenic transformer oil that has been confirmed to contain no corrosive sulfur by ASTM D 1275B is prepared.
- sample oil B a predetermined amount of dibenzyl disulfide is added to the transformer oil.
- sample oil C An oil obtained by adding 0.4 wt% (w / w) of DBPC to sample oil B is referred to as sample oil C.
- a test relating to the formation of copper sulfide is performed by a method in accordance with IEC 62535 of IEC (International Electrotechnical Commission) standard. 15 grams of this transformer oil and a copper plate (30 mm x 7.5 mm x 1.5 mm) wrapped with one layer of kraft paper are sealed in a bottle with an internal volume of 30 cc, and a silicon rubber stopper is applied. Heat for 144 hours.
- Test Example 2 The following examination was performed by the same method as Test Example 1 except that paraffinic mineral oil was used instead of naphthenic mineral oil.
- sample oil D copper sulfide is not generated because dibenzyl disulfide that is a raw material for copper sulfide is not added.
- sample oil E copper sulfide is generated on the surface of the insulating paper.
- the adhesion amount was 3.5 ⁇ g / cm 2 (1st day) to 10.7 ⁇ g / cm 2 (6th day).
- sample oil F significant formation of copper sulfide is observed on the surface of the insulating paper.
- the adhesion amount was 4.8 ⁇ g / cm 2 (1st day) to 53.1 ⁇ g / cm 2 (6th day).
- the amount of copper sulfide adhering to the insulating paper clearly increases as compared with the case of no addition.
- the amount of copper sulfide on the surface of the insulating paper increases as the DBPC concentration increases, and after reaching 0.2 wt% as the maximum value, the DBPC concentration increases thereafter. As a result, the amount of copper sulfide on the insulating paper decreased.
- Test Example 4 In Test Examples 1 to 3, experiments were conducted using DBPC as an antioxidant. In this test example, an experiment was conducted using DBP (di-tert-butyl-phenol) as an antioxidant. That is, the same naphthenic transformer oil (sample oil A) as in Test Example 1 and the oil obtained by adding 0.4 wt% DBP and 100 ppmw DBDS to Sample Oil A (Sample Oil G) The same experiment was conducted.
- DBP di-tert-butyl-phenol
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Abstract
Description
前記油入電気機器内の絶縁油中に含まれる特定化合物を検出する第1ステップと、
前記第1ステップで得られた検出結果に基いて、前記油入電気機器内における硫化銅生成の可能性を評価する第2ステップと、
前記第2ステップで得られた評価結果に基いて、前記油入電気機器における異常発生の危険度を診断する第3ステップとを含み、
前記特定化合物は、ジベンジルジスルフィドおよび/またはジベンジルジスルフィドから生成するラジカルの反応生成物と、
ジ-tert-ブチル-パラクレゾールおよび/またはジ-tert-ブチル-パラクレゾールから生成するラジカルの反応生成物、あるいは、ジ-tert-ブチル-フェノールおよび/またはジ-tert-ブチル-フェノールから生成するラジカルの反応生成物とを含む、
油入電気機器の診断方法である。
前記第3ステップにおいて、前記第2ステップで硫化銅生成の可能性が高いと評価された場合に、前記油入電気機器における異常発生の危険度が高いと診断することが好ましい。
前記油入電気機器内の絶縁油中に含まれる特定化合物を検出する検出ユニットと、
前記検出ユニットで得られた検出結果に基いて、前記油入電気機器内における硫化銅生成の可能性を評価する評価ユニットと、
前記評価ユニットで得られた評価結果に基いて、前記油入電気機器における異常発生の危険度を診断する診断ユニットとを含み、
前記特定化合物は、ジベンジルジスルフィドおよび/またはジベンジルジスルフィドから生成するラジカルの反応生成物と、
ジ-tert-ブチル-パラクレゾールおよび/またはジ-tert-ブチル-パラクレゾールから生成するラジカルの反応生成物、あるいは、ジ-tert-ブチル-フェノールおよび/またはジ-tert-ブチル-フェノールから生成するラジカルの反応生成物とを含む、
油入電気機器の診断装置にも関する。
本発明の油入電気機器の診断方法の一実施形態について説明する。本実施形態の診断方法は、油入電気機器内におけるコイル等の絶縁紙表面での硫化銅生成の危険度を評価する油入電気機器の診断方法であり、
油入電気機器内の絶縁油中に含まれる特定化合物を検出する第1ステップと、
前記第1ステップで得られた検出結果に基いて、前記油入電気機器内における硫化銅生成の可能性を評価する第2ステップと、
前記第2ステップで得られた評価結果に基いて、前記油入電気機器における異常発生の危険度を診断する第3ステップとを含む。
本実施形態は、上記特定化合物として、DBPCと、DBDSから生じるラジカルの反応生成物を測定する点において、実施形態1とは異なる診断方法であり、それ以外は、実施形態1と同様である。
本実施形態は、上記特定化合物として、DBPCから生成するラジカルとDBDSから生じるラジカルとの反応生成物を測定する点において、実施形態1、2とは異なるが、それ以外は、実施形態1、2と同様の診断方法である。
本実施形態は、上述の実施形態における油入電気機器の診断方法を実現するための診断装置の一実施形態である。図4に、本実施形態の油入電気機器の診断装置の構成図を示す。図4を参照して、診断装置101は、配管2と、タンク3と、採油装置4と、前処理装置5と、検出ユニット6と、評価ユニット7と、診断ユニット8と、表示装置9とを備える。
まず、ASTM D 1275Bで腐食性の硫黄を含まないことを確認済みのナフテン系変圧器油(試料油A)を準備する。次にこの変圧器油にジベンジルジスルフィドを所定量添加する。本実験では100ppmw(w/w)添加した。この油を試料油Bとする。試料油BにDBPCを0.4重量%(w/w)添加した油を試料油Cとする。
1:硫化銅の付着なし
2:絶縁紙の端部にわずかに付着
3:2よりもさらに広範囲に付着
4:全面に付着
ナフテン系鉱油に代えてパラフィン系鉱油を使用した以外は、試験例1と同じ方法により、下記の検討を行った。
試験例1、2では、DBPCの濃度を0.4重量%に固定して実験を行った。本試験例では、DBPCの濃度の影響が絶縁紙表面の硫化銅量に及ぼす影響を明確にするために、DBPCの濃度を0、0.02、0.04、0.1、0.2、0.4および0.8とし、DBDSの濃度を100ppmwとして、試験例1と同様の硫化銅の生成に関する試験を行い、絶縁紙上の硫化銅付着量を測定した。図8に、絶縁紙上の硫化銅付着量をDBPCの濃度に対してプロットしたグラフを示す。
試験例1~3では、酸化防止剤としてDBPCを用いた実験を行った。本試験例では、酸化防止剤としてDBP(ジ-tert-ブチル-フェノール)を用いた実験を行った。すなわち、試験例1と同様のナフテン系変圧器油(試料油A)と、試料油Aに0.4重量%のDBPおよび100ppmwのDBDSを添加した油(試料油G)とについて、試験例1と同様の実験を行った。
Claims (7)
- 油入電気機器(1)内における硫化銅生成の危険度を評価する油入電気機器(1)の診断方法であって、
前記油入電気機器(1)内の絶縁油(55)中に含まれる特定化合物を検出する第1ステップと、
前記第1ステップで得られた検出結果に基いて、前記油入電気機器(1)内における硫化銅生成の可能性を評価する第2ステップと、
前記第2ステップで得られた評価結果に基いて、前記油入電気機器(1)における異常発生の危険度を診断する第3ステップとを含み、
前記特定化合物は、ジベンジルジスルフィドおよび/またはジベンジルジスルフィドから生成するラジカルの反応生成物と、
ジ-tert-ブチル-パラクレゾールおよび/またはジ-tert-ブチル-パラクレゾールから生成するラジカルの反応生成物、あるいは、ジ-tert-ブチル-フェノールおよび/またはジ-tert-ブチル-フェノールから生成するラジカルの反応生成物とを含む、
油入電気機器(1)の診断方法。 - 前記特定化合物は、ジベンジルジスルフィドと、ジ-tert-ブチル-パラクレゾールまたはジ-tert-ブチル-フェノールとを含む、請求項1に記載の油入電気機器(1)の診断方法。
- 前記ジベンジルジスルフィドから生成するラジカルの反応生成物は、ベンズアルデヒド、ベンジルアルコール、ビベンジル、ジベンジルスルフィドおよびジベンジルスルホキシドからなる群から選択される少なくとも1種の化合物である、請求項1に記載の診断方法。
- 前記特定化合物は、ジベンジルジスルフィドから生成するラジカルとジ-tert-ブチル-パラクレゾールから生成するラジカルとの反応生成物、または、ジベンジルジスルフィドから生成するラジカルとジ-tert-ブチル-フェノールから生成するラジカルとの反応生成物を含む、請求項1に記載の診断方法。
- 前記第2ステップにおいて、前記第1ステップで前記特定化合物が検出された場合に、前記油入電気機器(1)内における硫化銅生成の可能性が高いと評価し、
前記第3ステップにおいて、前記第2ステップで硫化銅生成の可能性が高いと評価された場合に、前記油入電気機器(1)における異常発生の危険度が高いと診断する、請求項1に記載の油入電気機器(1)の診断方法。 - 前記油入電気機器(1)内における硫化銅生成は、絶縁紙(53N)表面での硫化銅生成である、請求項1に記載の油入電気機器(1)の診断方法。
- 油入電気機器(1)内における硫化銅生成の危険度を評価するための油入電気機器(1)の診断装置(101)であって、
前記油入電気機器(1)内の絶縁油(55)中に含まれる特定化合物を検出する検出ユニット(6)と、
前記検出ユニット(6)で得られた検出結果に基いて、前記油入電気機器(1)内における硫化銅生成の可能性を評価する評価ユニット(7)と、
前記評価ユニット(7)で得られた評価結果に基いて、前記油入電気機器(1)における異常発生の危険度を診断する診断ユニット(8)とを含み、
前記特定化合物は、ジベンジルジスルフィドおよび/またはジベンジルジスルフィドから生成するラジカルの反応生成物と、
ジ-tert-ブチル-パラクレゾールおよび/またはジ-tert-ブチル-パラクレゾールから生成するラジカルの反応生成物、あるいは、ジ-tert-ブチル-フェノールおよび/またはジ-tert-ブチル-フェノールから生成するラジカルの反応生成物とを含む、
油入電気機器(1)の診断装置(101)。
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EP11789586.2A EP2579283A1 (en) | 2010-06-02 | 2011-05-10 | Diagnosis method and diagnosis apparatus for oil-filled electrical apparatus |
US13/640,509 US20130034909A1 (en) | 2010-06-02 | 2011-05-10 | Diagnosis method and diagnosis apparatus for oil-filled electrical apparatus |
CN201180020402.2A CN102870176B (zh) | 2010-06-02 | 2011-05-10 | 油浸电气设备的诊断方法和诊断装置 |
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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 |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0676635A (ja) * | 1992-08-31 | 1994-03-18 | Mitsubishi Electric Corp | 油入電気機器 |
JPH0972892A (ja) | 1995-09-07 | 1997-03-18 | Mitsubishi Electric Corp | 油入電気機器内部の異常診断方法 |
JP2006278916A (ja) * | 2005-03-30 | 2006-10-12 | Nippon Oil Corp | 絶縁紙の劣化抑制方法 |
US20080251424A1 (en) | 2004-04-30 | 2008-10-16 | Abb Technology Ltd. | Method for Removal of Reactive Sulfur from Insulating Oil |
WO2009054155A1 (ja) * | 2007-10-26 | 2009-04-30 | Mitsubishi Electric Corporation | 油入電気機器の診断方法 |
JP2010010439A (ja) | 2008-06-27 | 2010-01-14 | Mitsubishi Electric Corp | 油入電気機器における硫化銅生成の推定方法および異常を診断する方法 |
-
2011
- 2011-05-10 WO PCT/JP2011/060768 patent/WO2011152177A1/ja active Application Filing
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- 2011-05-10 CN CN201180020402.2A patent/CN102870176B/zh not_active Expired - Fee Related
- 2011-05-10 EP EP11789586.2A patent/EP2579283A1/en not_active Withdrawn
- 2011-05-10 US US13/640,509 patent/US20130034909A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0676635A (ja) * | 1992-08-31 | 1994-03-18 | Mitsubishi Electric Corp | 油入電気機器 |
JPH0972892A (ja) | 1995-09-07 | 1997-03-18 | Mitsubishi Electric Corp | 油入電気機器内部の異常診断方法 |
US20080251424A1 (en) | 2004-04-30 | 2008-10-16 | Abb Technology Ltd. | Method for Removal of Reactive Sulfur from Insulating Oil |
JP2006278916A (ja) * | 2005-03-30 | 2006-10-12 | Nippon Oil Corp | 絶縁紙の劣化抑制方法 |
WO2009054155A1 (ja) * | 2007-10-26 | 2009-04-30 | Mitsubishi Electric Corporation | 油入電気機器の診断方法 |
JP2010010439A (ja) | 2008-06-27 | 2010-01-14 | Mitsubishi Electric Corp | 油入電気機器における硫化銅生成の推定方法および異常を診断する方法 |
Non-Patent Citations (2)
Title |
---|
S. TOYAMA; J. TANIMURA; N. YAMADA; E. NAGAO; T. AMIMOTO: "Highly Sensitive Detection Method of Dibenzyl Disulfide and the Elucidation of the Mechanism of Copper Sulfide Generation in Insulating Oil", IEEE TDEI, vol. 16, no. 2, April 2009 (2009-04-01), pages 509 - 515 |
S. TOYAMA; J. TANIMURA; N. YAMADA; E. NAGAO; T. AMIMOTO: "Highly Sensitive Detection Method of Dibenzyl Disulfide and the Elucidation of the Mechanism of Copper Sulfide Generation in Insulating Oil", TDEI, vol. 16, no. 2, April 2009 (2009-04-01), pages 509 - 515 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
WO2013080267A1 (ja) * | 2011-11-28 | 2013-06-06 | 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 |
WO2014080451A1 (ja) * | 2012-11-20 | 2014-05-30 | 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 |
CN104838456B (zh) * | 2012-11-20 | 2016-11-23 | 三菱电机株式会社 | 充油电气设备的诊断方法及维护方法 |
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