CN101506917A - A method of removing unwanted sulphur compounds from the insulating oil of an electrical apparatus - Google Patents
A method of removing unwanted sulphur compounds from the insulating oil of an electrical apparatus Download PDFInfo
- Publication number
- CN101506917A CN101506917A CNA2007800315796A CN200780031579A CN101506917A CN 101506917 A CN101506917 A CN 101506917A CN A2007800315796 A CNA2007800315796 A CN A2007800315796A CN 200780031579 A CN200780031579 A CN 200780031579A CN 101506917 A CN101506917 A CN 101506917A
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- China
- Prior art keywords
- iodide
- iodine
- electric
- electric insulation
- insulation oil
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/20—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances liquids, e.g. oils
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/341—Preventing or reducing no-load losses or reactive currents
Abstract
A method of treating copper sulphide deposits on materials and surfaces that are in contact with electrically insulating oil inside an electrical apparatus. The copper sulphide which deposits on materials and surfaces are subjected to treatment with a iodine compound causing a substitution reaction with the copper sulphide.
Description
Technical field
The present invention relates to a kind of method that the copper sulfide precipitation that occurs in the electric insulation layer in the electric equipment is handled.
Background technology
Insulating oil is used for electric power transfer and the multiple different equipment of power field, for example power transformer, distribution transformer, tap changer, switching device and reactor.
These electric insulation oils comprise the sulfide of a small amount of activity usually, and it can react with copper, form copper sulfide (Cu
2S).Copper sulfide can not be dissolved in oil and may form precipitation on surface that contacts with the electric insulation oil of inside electric appliance and material.Copper sulfide is a semiconductor, and the semiconductive precipitation of formation may cause deterioration or destruction to the operation of equipment on surface in electric equipment and the material.
If semiconductive copper sulfide precipitation is being used on the insulating material (being generally cellulosic material, for example paper) of the copper conductor of coating electrical equipment, this may cause the insulation characterisitic deterioration of insulating material, and this may cause electric leakage or short circuit.Lip-deep semiconductive copper sulfide precipitation at the solid insulating material (such as timber, pottery, and pressboard) of inside electric appliance also may bring similar problem.
Semiconductive copper sulfide directly is deposited on the conductive surface may bring problem, if especially precipitation is formed at the connector surface.
CIGRE Moscow symposium in 2005 " Oil corrosion and Cu
2Sdeposition in Power Transformers "; People such as Bengtsson have described surface in distribution transformer and the copper sulfide Cu on the material
2The laboratory reproduction of S precipitation and the result of accident analysis.
The WO2005115082 title is a kind of being used for by oil being exposed at least a sulphur scavenging material and oil being exposed at least a polar adsorbent is removed sulfur-containing compound from insulating oil method for " Method for removing reactive sulfur frominsulating oil " described.
Method among the WO2005115082 has been made improving and has been used to handle electric insulation oil, removes sulfur-containing compound in the electric equipment outside from oil, prevents material and the lip-deep further precipitation of copper sulfide at inside electric appliance.Up to date also without any suggestion about how handling the surface that has been deposited in inside electric appliance and the copper sulfide on the material.At present, being used to remove on the insulating paper that is used for the covering copper conductor unique solution of copper sulfide precipitation is to remove old paper and it is replaced with new insulating paper.
How JP2001311083 has described by oil being stored in the container that comprises copper or copper alloy and can before using in electric equipment the sulfide in the electric insulation oil have been removed.Therefore sulfide and copper react and were collected and removed from oil before using in electric equipment in the oil.
Summary of the invention
An embodiment of the invention provide a kind of method, will be handled by the halogen compounds in the oil at the material and the lip-deep semiconductive copper sulfide precipitation of inside electric appliance by this method.
A purpose of preferred implementation of the present invention provides a kind of method, by material and the lip-deep copper sulfide precipitation of this method processing at inside electric appliance.
Reach one or more purpose of the present invention by the defined method in front, it is characterized in that iodide (iodine compound) cause the reaction at material and the above copper sulfide precipitation of surface of inside electric appliance.Copper sulfide is a semiconductor, and forms the insulation characterisitic deterioration that semiconductive precipitation may cause insulating material and oil system on insulating material, and this may cause the short circuit in the electric equipment.Have low conductive compound by from insulating material, removing copper sulfide or copper sulfide being converted into, can avoid these short circuits.
According to execution mode, described iodide comprise the iodine (I of element form
2), according to another execution mode, described iodide comprise hydrogen iodide (HI), and according to another execution mode, described iodide comprise alkyl iodide (R-I).An embodiment of the invention are for to add iodide to electric insulation oil.
According to the embodiment of the present invention, iodine is added in the electric equipment in the remaining electric insulation oil as stock solution (stock solution).
According to the embodiment of the present invention, add iodine by dissolving iodine crystal in the electric insulation oil in electric equipment.
According to the embodiment of the present invention, add iodine by dissolving iodine crystal in the electric insulation oil of electric equipment outside.
According to the embodiment of the present invention, will comprise in following group arbitrary at the material that inside electric appliance is handled: paper, pressboard, timber and other solid/fibrous insulating material that contacts with electric insulation oil.
According to the embodiment of the present invention, will comprise in following group arbitrary on the surface that inside electric appliance is handled: insulated electric conductor exposes conductor, magnetic core and other surface of solids that contacts with electric insulation oil.
According to the embodiment of the present invention, provide a kind of method, it further comprises the step of adding iodine with the form of iodine vapor.
According to the embodiment of the present invention, provide a kind of method, it shifts out a large amount of electric insulation oils that appear at usually in the described electric equipment, and adds described iodine with the form of iodine vapor.
According to the embodiment of the present invention, provide a kind of method, it further is included in and carries out the step of handling with chemical reagent in the controlled atmosphere.Control atmosphere by Control Parameter, parameter is such as humidity, temperature, ozone content, nitrogen and oxygen content.
According to the embodiment of the present invention, provide a kind of method, it further is included in the step of coming heater in the electric equipment during handling by the electric current of the conductor of flowing through.
According to the embodiment of the present invention, provide a kind of method, it further comprises the subsequent step of handling by iodide, carries out by second of oxidant and handles.In one embodiment, oxidant comprises ozone (O
3), in another embodiment, oxidant comprises chlorine dioxide (ClO
2), in another execution mode, oxidant comprises peroxy acid (R-O
3H).
According to the embodiment of the present invention, provide a kind of method, it further comprises the subsequent step of handling by iodide, carries out by second of compound structure reagent and handles.In one embodiment, compound structure reagent comprises organic diamine compound (H
2N-R-NH
2).
According to the embodiment of the present invention, second the oxidant in handling comprises the oxygen that adds in the controlled atmosphere and the mixing of nitrogen.
According to the embodiment of the present invention, copper compound is handled formed result as copper sulfide with described reagent, be left on the Transformer Winding, and transformer is full of transformer oil once more.
Description of drawings
Accompanying drawing constitutes the part of this specification, and comprises illustrative embodiments of the present invention, and it can be realized by various forms.Should be appreciated that, may each side of the present invention be shown enlargedly so that understand the present invention easily in some instances.
Fig. 1 is the flow chart of an embodiment of the invention.
Fig. 2 is the flow chart of another embodiment of the present invention.
Fig. 3 shows the schematic process diagram of a kind of method of the present invention.
Fig. 4 shows the schematic process diagram of a kind of method of the present invention.
Fig. 5 is the system schematic of an embodiment of the invention.
Fig. 6 is the system schematic of another embodiment of the present invention.
Embodiment
Provide detailed description of the preferred embodiment at this.Yet, should be appreciated that the present invention can realize with various forms.Therefore, specific detail disclosed herein should not explain that conduct limits, and more should be as the basis of claims and as teaching those skilled in the art use representational basis of the present invention in actual and suitably detailed system, structure and method.
Fig. 1 shows the schematic process diagram of this method.Preparing electric equipment and electric insulation oil in square frame 30 is used for handling.Iodide are presented in square frame 31 and are entered electric equipment and mix with electric insulation oil at device interior.In square frame 32 in the material and the lip-deep copper sulfide generation displacement reaction (processing) of inside electric appliance.This reaction makes at the material of inside electric appliance and lip-deep semiconductive copper sulfide and is converted into mainly nonconducting copper compound.In square frame 33, remove superfluous or unreacted iodide.
Fig. 2 shows a kind of schematic process diagram of method.Electric equipment is in off line in square frame 1.The temperature of oil is adjusted to for the optimum temperature that reacts in the electric equipment in square frame 2.(it can be iodine (I from iodide storages in square frame 6
2), hydrogen iodide (HI), alkyl iodide (R-I)).In square frame 4, iodide are added to the electric insulation oil in the electric equipment and react at inside electric appliance.In square frame 7, handle during reaction last excessive iodide in the electric equipment.
Fig. 3 shows the flow chart of an embodiment of the invention.Electric insulation oil is retained in electric equipment 20 inside and can begins to handle in this flow chart.Iodine compound storage means 21 provides iodide to be used to react.Iodide are presented 25 circulation 28 and (about the parameters such as humidity, temperature, nitrogen and oxygen content) that enter the atmosphere in the electric equipment 20 come the atmosphere in the control appliance.
The atmosphere with iodine vapor of pending electric equipment 20 inside must fully be mixed.Go up to guarantee enough reaction rates on the material and the surface that help iodine to be diffused into inside electric appliance of this mixing.Shown in the flow chart to atmosphere mix a kind of may be circulation 28 with pump 23.Remove 26 unreacted iodine and superfluous atmosphere and it is presented and enter cold-trap 22 to remove iodine vapor.The air-flow that leaves cold-trap 22 only comprises superfluous atmosphere 27.
Fig. 4 shows the flow chart of an embodiment of the invention.Big gauging remains in the electric equipment 10 in this flow chart, and can begin to handle.Iodine compound stock solution 11 is used to add required iodide to react.Iodine compound stock solution is presented 15 enter electric equipment 10, it mixes with remaining oil therein.Atmosphere on (about parameter such as humidity, temperature, nitrogen and oxygen content) control electric insulation oil.
Electric insulation oil in the electric equipment 10 and iodine stock solution must be mixed so that go up to guarantee enough reaction rates on the material and the surface that help iodine to be diffused into inside electric appliance.Shown in the flow chart to oil mix a kind of may be internal mixer 14 in electric equipment 10 inside.The cold-trap 12 of iodide vapors is for example removed in unreacted iodide evaporation and remove the atmosphere of 16 surpluses and it is presented and enter processing unit.The air-flow that leaves cold-trap 12 only comprises superfluous atmosphere 17.
The another way of adding iodine to electric insulation oil is by directly adding iodine crystal to oil.Another mode can be in circulation 28 (Fig. 3) pump oil and the oil that the bed of oil transmission by iodine crystal also will be rich in iodine carried back in the equipment.
Fig. 5 is the system schematic of an embodiment of the invention.Electric equipment 40 is full of electric insulation oil and is used for electric power protection and heat transmission.From different sources 41,45, add chemical reagent to insulating oil.Chemical reagent can be the form of concentrated reagent or the form that is dissolved in the reagent in the electric insulation oil.Pass through transfer pipelines 42 to electric equipment 40 from the source 41 of iodide, add iodide to oil.The reagent of the form of the reagent in being dissolved in electric insulation oil is added to before the electric equipment 40, and the discharge pipe 43 that some oil must pass through to storage container 44 is removed, and overflows preventing.
From the source 45 of compound structure reagent, also reagent is presented and entered the electric equipment 40 that is full of electric insulation oil.Can displacer (iodide) be added and with the interpolation of after the material of inside electric appliance and lip-deep copper sulfide react, carrying out compound structure reagent.Can when adding displacer, carry out interpolation to compound structure reagent.Add compound structure reagent with the form that is dissolved in the reagent in the electric insulation oil.The compound structure reagent of the form of the reagent in being dissolved in electric insulation oil is added to before the electric equipment 40, and the discharge pipe 43 that some oil must pass through to storage container 44 is removed, and overflows preventing.
Fig. 6 is the system schematic of another embodiment of the present invention.The part of electric insulation oil is extracted 53 from electric equipment 50 and is entered storage container 51.In this storage container, add reagent the extraction oil of conc forms to, for example liquid form or as crystal.The oil that will have an amount of reagent is presented back in 52 electric equipments 50.In one embodiment, displacer is iodine and then iodine is added to storage container 51 as the iodine crystal that slowly is dissolved in the electric insulation oil.Can stir or shake and/or heat oil in the storage container 51 to quicken the dissolving of iodine crystal.Can add the oil that compound structure reagent extracts crystal or stock solution form similarly.Then the oil that stirs or shake and/or heat in the storage container 51 is also presented in the telegram in reply gas equipment 50 then to generate uniform reagent solution.
An embodiment of the invention have been instructed and have at first been added iodide and allow it then and react a period of time at the material and the lip-deep copper sulfide of inside electric appliance.When the material in iodide and the electric equipment 50 and the reaction between the lip-deep copper sulfide finish, compound structure reagent added to present the oil that enters electric equipment 50.
Another embodiment of the present invention has been instructed and has at first been added iodide and allow it then and react a period of time at the material and the lip-deep copper sulfide of inside electric appliance.When the material in iodide and the electric equipment 50 and the reaction between the lip-deep copper sulfide finish, oxidant added to present the oil that enters electric equipment 50.
Another embodiment of the present invention has been instructed iodide and compound structure reagent added in the oil in the storage container 51 simultaneously and present then and has been entered electric equipment 50.
Though the present invention has combined preferred implementation and has been described, but be not intended to limit the scope of the invention to described particular form, and on the contrary, it is intended to cover this type of optional mode, modification and equivalent, and it can be included in the spirit and scope of the present invention that claims limited of enclosing.
Claims (20)
1. one kind is used to handle in the material that contacts with the electric insulation oil of inside electric appliance and the method for lip-deep copper sulfide precipitation,
It is characterized in that:
Be subjected to utilizing the processing that causes that the iodide with the displacement reaction of copper sulfide carry out at material and lip-deep described copper sulfide precipitation.
2. according to the method for claim 1, it is characterized in that described iodide are iodine (I
2).
3. according to the method for claim 1, it is characterized in that described iodide are hydrogen iodide (HI).
4. according to the method for claim 1, it is characterized in that described iodide are alkyl iodide (R-I).
5. according to the method for claim 2, it is characterized in that described iodine is added in the electric insulation oil in the described electric equipment as stock solution.
6. according to the method for claim 2, it is characterized in that adding described iodine by iodine crystal being dissolved in the electric insulation oil in the described electric equipment.
7. according to the method for claim 2, it is characterized in that by adding described iodine in the electric insulation oil that iodine crystal is dissolved in described electric equipment outside.
8. according to the method for claim 2, it is characterized in that shifting out a large amount of electric insulation oils that appear at usually in the described electric equipment, and add described iodine with the form of iodine vapor.
9. according to the method for claim 3, it is characterized in that adding described hydrogen iodide to electric insulation oil.
10. according to the method for claim 4, it is characterized in that adding described alkyl iodide to electric insulation oil.
11., further comprise by the step of oxidant oxidation from the product of described displacement reaction according to each method among the aforementioned claim 1-10.
12., further comprise by compound structure reagent in conjunction with step from the product of described displacement reaction according to each method among the aforementioned claim 1-10.
13., it is characterized in that described oxidant comprises the compound that is selected from following tabulation: add the peroxy acid of electric insulation oil to, oxygen, ozone and chlorine dioxide according to the method for claim 11.
14., it is characterized in that described compound structure reagent is the organic diamine compound that adds electric insulation oil to according to the method for claim 12.
15. a method that is used to handle at the material and the lip-deep copper sulfide precipitation of inside electric appliance,
It is characterized in that:
Described system comprises and is used for iodide are introduced device in the electric insulation oil of described electric equipment.
16., it is characterized in that described iodide comprise iodine, hydrogen iodide or alkyl iodide according to the system of claim 15.
17., it is characterized in that described electric equipment comprises the device that is used to admit described iodide according to the system of claim 16.
18., it is characterized in that described electric equipment is arranged at described inside electric appliance distribution iodide according to the system of claim 17.
19., it is characterized in that described system comprises the oxidant storage device and is used for oxidant is introduced device in the electric insulation oil of described electric equipment according to each system among the aforementioned claim 15-18.
20., it is characterized in that described system comprises the compound structure reagent storage means and is used for compound structure reagent is introduced device in the electric insulation oil of described electric equipment according to each system among the aforementioned claim 15-18.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE06017446 | 2006-08-25 | ||
| SE0601744A SE0601744L (en) | 2006-08-25 | 2006-08-25 | Procedure for the treatment of an electrical appliance |
| SE07012842 | 2007-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101506917A true CN101506917A (en) | 2009-08-12 |
Family
ID=39185752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800315796A Pending CN101506917A (en) | 2006-08-25 | 2007-08-13 | A method of removing unwanted sulphur compounds from the insulating oil of an electrical apparatus |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101506917A (en) |
| SE (1) | SE0601744L (en) |
| UA (1) | UA92549C2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162786A (en) * | 2010-02-17 | 2011-08-24 | 三菱电机株式会社 | Lifetime assessment apparatus and method for oil-filled electrical device, and degradation suppression apparatus and method for oil-filled electrical device |
| CN102652341A (en) * | 2009-12-24 | 2012-08-29 | 三菱电机株式会社 | Method of predicting probability of abnormality occurrence in oil-filled electric appliance |
| CN104838456B (en) * | 2012-11-20 | 2016-11-23 | 三菱电机株式会社 | The diagnostic method of oil-filled electric equipment and maintaining method |
-
2006
- 2006-08-25 SE SE0601744A patent/SE0601744L/en not_active Application Discontinuation
-
2007
- 2007-08-13 UA UAA200902788A patent/UA92549C2/en unknown
- 2007-08-13 CN CNA2007800315796A patent/CN101506917A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102652341A (en) * | 2009-12-24 | 2012-08-29 | 三菱电机株式会社 | Method of predicting probability of abnormality occurrence in oil-filled electric appliance |
| CN102652341B (en) * | 2009-12-24 | 2015-03-11 | 三菱电机株式会社 | Method of predicting probability of abnormality occurrence in oil-filled electric appliance |
| CN102162786A (en) * | 2010-02-17 | 2011-08-24 | 三菱电机株式会社 | Lifetime assessment apparatus and method for oil-filled electrical device, and degradation suppression apparatus and method for oil-filled electrical device |
| 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 |
| CN102162786B (en) * | 2010-02-17 | 2013-08-28 | 三菱电机株式会社 | Lifetime assessment apparatus and method for oil-filled electrical device, and degradation suppression apparatus and method for oil-filled electrical device |
| CN104838456B (en) * | 2012-11-20 | 2016-11-23 | 三菱电机株式会社 | The diagnostic method of oil-filled electric equipment and maintaining method |
Also Published As
| Publication number | Publication date |
|---|---|
| UA92549C2 (en) | 2010-11-10 |
| SE0601744L (en) | 2008-02-26 |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20090812 |