CN107578861A - Charge injection and device under a kind of transient suppression electric field - Google Patents
Charge injection and device under a kind of transient suppression electric field Download PDFInfo
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- CN107578861A CN107578861A CN201710780966.5A CN201710780966A CN107578861A CN 107578861 A CN107578861 A CN 107578861A CN 201710780966 A CN201710780966 A CN 201710780966A CN 107578861 A CN107578861 A CN 107578861A
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Abstract
The application is related to equipment for power transmission and distribution technical field, and in particular to charge injection and device under a kind of transient suppression electric field.When High-Voltage Electrical Appliances run on transient overvoltage waveform, partial high pressure electric field will make the interior injection electric charge of dielectric, and the physical processes such as electric charge injection, extraction constantly occur under extraneous stress.Internal field's distortion aggravation will be caused, easily cause internal breakdown and edge flashing failure.The application provides charge injection under a kind of transient suppression electric field, comprises the following steps：Magnesium oxide target is chosen, using magnetic control sputtering device, magnesia film is formed in matrix surface；Matrix is subjected to insulation covering to high-tension apparatus current-carrying Modular surface.The electron work functon at metal-insulator interface can be improved, improves surface second electron emission coefficiency, improves insulating surface edge flashing starting voltage under high vacuum.The application further relates to charge injecting device under a kind of transient suppression electric field.
Description
Technical field
The application is related to equipment for power transmission and distribution technical field, and in particular under a kind of transient suppression electric field charge injection and
Device.
Background technology
Dielectric composite has a stronger electric simulation strength, excellent mechanical performance and cheap, extensive
Applied in transmission of electricity, field of power distribution insulating part, and the manufacture of various high-voltage electrical equipment major insulations.At present, most of mesohigh
After motor and generator carry out folded bag and coiling to stator winding flat type copper wire using Kapton, alkali-free glass is used
The epoxy mica tape composite insulating material of silk reinforcement wraps to the stator winding after turning to type, conduct after hot compression molding
Stator winding major insulation；Insulating part in gas-insulated electric combination switch and gas-insulated metal pipeline transmission line of electricity, such as basin
Formula insulator, support insulator, disk insulator etc., using epoxy resin as base material, coordinate micron silica, three oxygen
Change the nonmetal oxide particle such as two aluminium, be fabricated using Vacuum Mixture pouring technology.
However, in high-tension apparatus running, the environment residing for dielectric composite is sufficiently complex, existing for the external world
The various stress such as heat, electricity, machinery, chemistry, can all accelerate insulating materials aging.Especially when High-Voltage Electrical Appliances run on transient overvoltage
When under waveform effect, partial high pressure electric field will make injection electric charge inside dielectric, and under extraneous stress constantly
The physical processes such as the injection of generation electric charge, extraction.In this process, the injection of electric charge, internal field's distortion aggravation will be caused, held
Easily cause internal breakdown and edge flashing failure.
The content of the invention
It is local the invention aims to solve when High-Voltage Electrical Appliances are run under the effect of transient overvoltage waveform
High voltage electric field will make dielectric inside injection electric charge, and the things such as electric charge injection, extraction constantly occur under extraneous stress
Reason process.In this process, the injection of electric charge, internal field's distortion aggravation will be caused, easily cause internal breakdown and along face
The problem of arcing fault.
Therefore, the embodiments of the invention provide following technical scheme：Charge injection under a kind of transient suppression electric field, institute
The method of stating comprises the following steps：
Choose the magnesium oxide target that purity is 99.99% and insert magnetic control sputtering device, matrix is fixed on magnetic control sputtering device base
Bottom carries out magnetron sputtering, and one layer of magnesia film is formed in matrix surface；
Matrix is subjected to insulation covering to high-tension apparatus current-carrying Modular surface.
Alternatively, the mode of operation of the magnetic control sputtering device is pulse excitation source, sputtering power 300W, and sputtering chamber is taken out very
Sky is passed through high-purity argon gas to 0.35Pa, and in chamber interior, and gas flow rate is arranged to 35sccm, and wherein sccm represents standard milliliters
Flow per minute.
Alternatively, the sputtering time of the magnetron sputtering includes 1 hour~6 hours, the thickness bag of the magnesia film
100nm~800nm is included, wherein nm represents nanometer.
Alternatively, described matrix includes insulation material layer or metallic conductor；The magnesia film is arranged at described exhausted
Edge material surface, the magnesia film are arranged at the metallic conductor surface.
Alternatively, it is described to carry out insulation covering including the exhausted of magnesia film be coated with high-tension apparatus current-carrying Modular surface
Edge material layer, which is wrapped on matrix, forms stator winding, and the stator winding that winding finishes is put under 180 degree celsius temperatures and extruded
Shaping, prepare motor stator winding；The metallic conductor for being coated with magnesia film is put into mould, then mould is sent into and poured into a mould
Stove is poured into a mould, and prepares epoxy radicals insulating part；By three-layer co-extruded equipment, by the metallic conductor for being coated with magnesia film, partly lead
Electric layer and the insulation material layer three of magnesia film together extrusion forming is coated with, prepares cable.
Alternatively, including it is described it is according to any one of claims 1 to 5 carried out insulate covering high-tension apparatus current-carrying
Module.
Alternatively, described device includes being provided with the high-voltage motor of Transformer Winding insulation, is provided with stacked switch and gas
The primary cut-out of body insulated metal pipe-line wrapping, mesohigh alternating current-direct current sleeve pipe or mesohigh alternating current-direct current cable.
Technical scheme provided in an embodiment of the present invention includes following beneficial effect：The application uses the side of magnetron sputtering plating
Method, can be on insulating materials or metallic conductor by controlling the parameter of magnetic control sputtering device, and the parameter of magnesium oxide target
One layer of magnesia film is formed, the film can improve the electron work functon at metal-insulator interface, and improve surface second electronics
Emission ratio, it can be used for suppressing electric charge in power equipment running and, from the injection of conductor, improve insulating surface under high vacuum
Edge flashing starting voltage.In addition, this method does not change material internal composition and construction, can be in the same of lifting electric property
When, material good insulating properties and mechanical performance are remained electrically isolated from, suppress injection of the electric charge from conductor, improve power equipment fortune
The row life-span.This method can be used for the Transformer Winding major insulation of mesohigh motor；The stacked switch and gas of primary cut-out are exhausted
Supporting insulator in edge metallic conduit；Mesohigh alternating current-direct current sleeve pipe, high vacuum insulation material and middle height in Aero-Space
Press alternating current-direct current cable.In power transmission and power supplying and distributing equipment, it is related to electric power accessory of the conductor with insulation close contact, equally
This method can be applied to inject suppressing method as electric charge, play extension and improve insulation life, reach the effect of equipment safety operation
Fruit.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it should be apparent that, for those of ordinary skills, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of construction of cable schematic diagram in the embodiment of the present invention；
Symbol in Fig. 1 represents：
1- metallic conductors, 2- semi-conductive layers, 3- insulation material layers.
Embodiment
Here exemplary embodiment will be illustrated in detail.Embodiment described in following exemplary embodiment
Do not represent all embodiments consistent with the present invention.On the contrary, they be only with as being described in detail in appended claims
, the example of the method that some aspects of the invention are consistent.
Medium integral insulation intensity will be reduced, ultimately results in insulation failure, comes pole to the stable transmission belt of electric energy safe
Big hidden danger；In addition, the injection of electric charge, will cause internal field's distortion aggravation, easily causes internal breakdown and edge flashing failure.
Below by embodiment, the technical scheme of the application is described in further detail.
Embodiment one
The embodiment of the present invention provides charge injection under a kind of transient suppression electric field, and methods described comprises the following steps：
Choose the magnesium oxide target that purity is 99.99% and insert magnetic control sputtering device, matrix is fixed on magnetic control sputtering device base
Bottom carries out magnetron sputtering, and one layer of magnesia film is formed in matrix surface；
Matrix is subjected to insulation covering to high-tension apparatus current-carrying Modular surface.
To high-tension apparatus current carrying part surface formed insulating barrier before, target select purity for 99.99% magnesia
Target, by the method for magnetron sputtering plating or evaporation coating, one layer of magnesia film is formed in matrix surface, then,
After the insulation covering of high-tension apparatus current-carrying module, it becomes possible to so that forming one layer between matrix and the part combined with matrix
Close dense oxide magnesium film is bonded, while matrix is covered in high-tension apparatus current-carrying Modular surface.The film can suppress to transport
Electric charge is from the injection of conductor during row, while can remain electrically isolated from material good insulating properties and mechanical performance, can use
In mesohigh motor, Transformer Winding insulation；Insulator in primary cut-out, stacked switch and gas-insulated metal pipeline；
Mesohigh alternating current-direct current sleeve pipe；And mesohigh AC and DC cable.
Embodiment two
Referring to Fig. 1, the embodiment of the present invention provides charge injection under a kind of transient suppression electric field, and methods described is included such as
Lower step：
Choose the magnesium oxide target that purity is 99.99% and insert magnetic control sputtering device, matrix is fixed on magnetic control sputtering device base
Bottom carries out magnetron sputtering, and one layer of magnesia film is formed in matrix surface；
Matrix is subjected to insulation covering to high-tension apparatus current-carrying Modular surface.
Alternatively, the mode of operation of the magnetic control sputtering device is pulse excitation source, sputtering power 300W, and sputtering chamber is taken out very
Sky is passed through high-purity argon gas to 0.35Pa, and in chamber interior, and gas flow rate is arranged to 35sccm, and wherein sccm represents standard milliliters
Flow per minute.
Alternatively, the sputtering time of the magnetron sputtering includes 1 hour~6 hours, the thickness bag of the magnesia film
100nm~800nm is included, wherein nm represents nanometer.
Alternatively, it is described carried out on high-tension apparatus current carrying part surface insulation covering include following manner：
Wrap press mold shaping；Mixing cast；It is three-layer co-extruded.Press mold is molded：The insulation material layer of magnesia film will be coated with
It is wrapped on matrix and forms stator winding, the stator winding that winding finishes is put into extrusion forming under 180 degree celsius temperatures, prepared
Motor stator winding；Mixing cast：The metallic conductor for being coated with magnesia film is put into mould, then mould is sent into and poured into a mould
Stove is poured into a mould, and prepares epoxy radicals insulating part；It is three-layer co-extruded：By three-layer co-extruded equipment, the metal of magnesia film will be coated with
Conductor 1, semi-conductive layer 2 and the three of insulation material layer 3 of magnesia film together extrusion forming is coated with, prepares cable.
To high-tension apparatus current-carrying Modular surface formed insulating barrier before, target select purity for 99.99% magnesia
Target, magnetic control sputtering device working mode selection pulse excitation source, sputtering power 300W, sputtering chamber are evacuated to 0.35Pa, and
High-purity argon gas is passed through in chamber interior, gas flow rate is arranged to 35sccm.Insulating materials or metallic conductor are attached to substrate
, can be to carry out magnetron sputtering after fixation.Wherein, sputtering time control was at 1 hour to 6 hours, you can corresponding on matrix
Formation a layer thickness be 100nm-800nm magnesia film, then, in the insulation covering of high-tension apparatus current-carrying module
Afterwards, it becomes possible to one layer of fitting closely fine and close oxygen is formed between insulation material layer or metallic conductor and position in combination
Change magnesium film, while matrix is covered in high-tension apparatus current-carrying Modular surface.The film can suppress in running electric charge from leading
The injection of body, while material good insulating properties and mechanical performance can be remained electrically isolated from, available for mesohigh motor, transformation
Device winding insulation；Insulator in primary cut-out, stacked switch and gas-insulated metal pipeline；Mesohigh alternating current-direct current sleeve pipe；
And mesohigh AC and DC cable.
Embodiment three
Referring to Fig. 1, the embodiment of the present invention provides charge injecting device under a kind of transient suppression electric field, including the right will
Seek the high-tension apparatus current-carrying module of the covering that insulate any one of 1~5.
Alternatively, described device includes being provided with the high-voltage motor of Transformer Winding insulation, is provided with stacked switch and gas
The primary cut-out of body insulated metal pipe-line wrapping, mesohigh alternating current-direct current sleeve pipe or mesohigh alternating current-direct current cable.
By the method for magnetron sputtering plating or evaporation coating, one layer is formed in insulating materials or metallic conductor surface
Thickness is more than 120nm magnesia film, then, after the insulation covering of high-tension apparatus current-carrying module, it becomes possible to exhausted
One layer of close dense oxide magnesium film of fitting is formed between edge material layer or metallic conductor and position in combination, simultaneously
Matrix is covered in high-tension apparatus current-carrying Modular surface.
It can be formed by the method for magnetron sputtering plating or evaporation coating in insulating materials or metallic conductor surface
A layer thickness 100nm-800nm magnesia film, the film can suppress the injection of electric charge in running from conductor, simultaneously
Material good insulating properties and mechanical performance can be remained electrically isolated from, available for mesohigh motor, Transformer Winding insulation；It is high
Insulator in voltage breaker, stacked switch and gas-insulated metal pipeline；Mesohigh alternating current-direct current sleeve pipe；And mesohigh friendship,
Direct current cables.The film can improve the electron work functon at metal-insulator interface, and improve surface second electron emission coefficiency, can
, from the injection of conductor, to improve insulating surface edge flashing under high vacuum for suppressing electric charge in power equipment running and originate
Voltage.In addition, this method does not change material internal composition and construction, electricity can be kept absolutely while electric property is lifted
Edge material good insulating properties and mechanical performance, suppress injection of the electric charge from conductor, improve power equipment service life.The party
Method can be used for the Transformer Winding major insulation of mesohigh motor；In the stacked switch and gas-insulated metal pipeline of primary cut-out
Supporting insulator；Mesohigh alternating current-direct current sleeve pipe, high vacuum insulation material and mesohigh alternating current-direct current cable in Aero-Space.
In power transmission and power supplying and distributing equipment, it is related to electric power accessory of the conductor with insulation close contact, can equally applies the party
Method injects suppressing method as electric charge, plays extension and improves insulation life, reaches the effect of equipment safety operation.
Described above is only the embodiment of the embodiment of the present invention, make those skilled in the art consider specification and
After putting into practice the invention applied here, other embodiments of the present invention will readily occur to.The application is intended to appointing for the application
What modification, purposes or adaptations, these modifications, purposes or adaptations follow the general principle of the present invention simultaneously
The common knowledge or conventional techniques in the art do not invented including the application.Description and embodiments are considered only as
Exemplary, the true scope and spirit of the application are pointed out by following claim.
It should be appreciated that the application is not limited to the technical scheme being described above, and can not depart from
Its scope carries out various modifications and changes.Scope of the present application is only limited by appended claim.
Claims (7)
1. charge injection under a kind of transient suppression electric field, it is characterised in that methods described comprises the following steps：
Choose the magnesium oxide target that purity is 99.99% and insert magnetic control sputtering device, matrix is fixed on into magnetic control sputtering device substrate enters
Row magnetron sputtering, one layer of magnesia film is formed in matrix surface；
Matrix is subjected to insulation covering to high-tension apparatus current-carrying Modular surface.
2. the method as described in claim 1, it is characterised in that the mode of operation of the magnetic control sputtering device is pulse excitation source,
Sputtering power 300W, sputtering chamber is evacuated to 0.35Pa, and is passed through high-purity argon gas in chamber interior, and gas flow rate is arranged to
35sccm, wherein sccm represent standard milliliters flow per minute.
3. the method as described in claim 1, it is characterised in that it is small that the sputtering time of the magnetron sputtering includes 1 hour~6
When, the thickness of the magnesia film includes 100nm~800nm, and wherein nm represents nanometer.
4. the method as described in claim 1, it is characterised in that described matrix includes insulation material layer or metallic conductor；Institute
State magnesia film and be arranged at the insulating materials layer surface, the magnesia film is arranged at the metallic conductor surface.
5. the method as described in claim 1, it is characterised in that described to carry out insulation covering in high-tension apparatus current-carrying Modular surface
Stator winding is formed including the insulation material layer for being coated with magnesia film is wrapped on matrix, the stator winding that winding is finished
Extrusion forming under 180 degree celsius temperatures is put into, prepares motor stator winding；The metallic conductor for being coated with magnesia film is put into mould
In tool, then mould feeding pouring furnace is poured into a mould, prepares epoxy radicals insulating part；By three-layer co-extruded equipment, will plate aerobic
Change the metallic conductor of magnesium film, semi-conductive layer and be coated with the insulation material layer three of magnesia film together extrusion forming, prepare
Cable.
6. charge injecting device under a kind of transient suppression electric field, it is characterised in that including any one of described Claims 1 to 5
The high-tension apparatus current-carrying module of the described covering that insulate.
7. device as claimed in claim 6, it is characterised in that described device includes the high pressure for being provided with Transformer Winding insulation
Motor, be provided with stacked switch and gas-insulated metal pipe-line wrapping primary cut-out, mesohigh alternating current-direct current sleeve pipe or
Mesohigh alternating current-direct current cable.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710780966.5A CN107578861A (en) | 2017-09-01 | 2017-09-01 | Charge injection and device under a kind of transient suppression electric field |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710780966.5A CN107578861A (en) | 2017-09-01 | 2017-09-01 | Charge injection and device under a kind of transient suppression electric field |
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| CN201710780966.5A Pending CN107578861A (en) | 2017-09-01 | 2017-09-01 | Charge injection and device under a kind of transient suppression electric field |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320874A (en) * | 2018-03-16 | 2018-07-24 | 天津大学 | The method of inhibition GIS insulator surface charge accumulations based on linear gradient processing |
| CN108428523A (en) * | 2018-03-16 | 2018-08-21 | 天津大学 | GIS insulator design methods with the distribution of two-dimentional dielectric constant linear gradient |
| CN108447630A (en) * | 2018-02-28 | 2018-08-24 | 天津大学 | GIL insulator design methods with the distribution of surface conductance two-dimensional linear gradient |
| CN108447631A (en) * | 2018-03-16 | 2018-08-24 | 天津大学 | GIS insulator design methods with the U-shaped gradient distribution of two-dimentional dielectric constant |
| CN108461234A (en) * | 2018-02-28 | 2018-08-28 | 天津大学 | GIL insulator design methods with the distribution of surface conductance two dimension ∧ type gradients |
| CN108484954A (en) * | 2018-02-28 | 2018-09-04 | 天津大学 | GIL insulator design methods with the U-shaped gradient distribution of surface conductance two dimension |
| CN108597699A (en) * | 2018-03-16 | 2018-09-28 | 天津大学 | GIS insulator design methods with the distribution of two-dimentional dielectric constant ∧ type gradients |
| CN108695030A (en) * | 2018-03-16 | 2018-10-23 | 天津大学 | The method of inhibition GIS insulator surface charge accumulations based on the processing of U-shaped gradient |
| CN114107921A (en) * | 2021-10-22 | 2022-03-01 | 广东电网有限责任公司广州供电局 | Coating method of copper electrode |
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| JPH06151602A (en) * | 1992-11-05 | 1994-05-31 | Fuji Xerox Co Ltd | Production of oriented ferroelectric thin film |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461234B (en) * | 2018-02-28 | 2019-12-31 | 天津大学 | GIL insulator design method with surface conductance two-dimensional inverted V-shaped gradient distribution |
| CN108484954B (en) * | 2018-02-28 | 2020-01-07 | 天津大学 | GIL insulator design method with surface conductance two-dimensional U-shaped gradient distribution |
| CN108447630A (en) * | 2018-02-28 | 2018-08-24 | 天津大学 | GIL insulator design methods with the distribution of surface conductance two-dimensional linear gradient |
| CN108447630B (en) * | 2018-02-28 | 2019-12-31 | 天津大学 | GIL insulator design method with surface conductance two-dimensional linear gradient distribution |
| CN108461234A (en) * | 2018-02-28 | 2018-08-28 | 天津大学 | GIL insulator design methods with the distribution of surface conductance two dimension ∧ type gradients |
| CN108484954A (en) * | 2018-02-28 | 2018-09-04 | 天津大学 | GIL insulator design methods with the U-shaped gradient distribution of surface conductance two dimension |
| CN108447631A (en) * | 2018-03-16 | 2018-08-24 | 天津大学 | GIS insulator design methods with the U-shaped gradient distribution of two-dimentional dielectric constant |
| CN108695030A (en) * | 2018-03-16 | 2018-10-23 | 天津大学 | The method of inhibition GIS insulator surface charge accumulations based on the processing of U-shaped gradient |
| CN108597699A (en) * | 2018-03-16 | 2018-09-28 | 天津大学 | GIS insulator design methods with the distribution of two-dimentional dielectric constant ∧ type gradients |
| CN108320874A (en) * | 2018-03-16 | 2018-07-24 | 天津大学 | The method of inhibition GIS insulator surface charge accumulations based on linear gradient processing |
| CN108428523A (en) * | 2018-03-16 | 2018-08-21 | 天津大学 | GIS insulator design methods with the distribution of two-dimentional dielectric constant linear gradient |
| CN108320874B (en) * | 2018-03-16 | 2020-01-07 | 天津大学 | Method for inhibiting GIS insulator surface charge accumulation based on linear gradient processing |
| CN108447631B (en) * | 2018-03-16 | 2020-01-07 | 天津大学 | GIS insulator design method with two-dimensional dielectric constant U-shaped gradient distribution |
| CN114107921A (en) * | 2021-10-22 | 2022-03-01 | 广东电网有限责任公司广州供电局 | Coating method of copper electrode |
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