CN207116135U - A kind of conical insulator for suppressing function with VFTO - Google Patents
A kind of conical insulator for suppressing function with VFTO Download PDFInfo
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- CN207116135U CN207116135U CN201721114114.4U CN201721114114U CN207116135U CN 207116135 U CN207116135 U CN 207116135U CN 201721114114 U CN201721114114 U CN 201721114114U CN 207116135 U CN207116135 U CN 207116135U
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- vfto
- insulator
- electricity areas
- center insert
- suppressing function
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Abstract
The application is related to electrical equipment technical field, more particularly to a kind of conical insulator for suppressing function with VFTO.The conical insulator includes：Center insert, insulation layer, Pa electricity areas and mounting flange, wherein, the center insert is arranged at the top of a conulite, and the cone is the insulation layer close to one end of the center insert, remainder is the Pa electricity areas, and the bottom in the Pa electricity areas is connected with the mounting flange.When there is additional VFTO to act on insulator surface, in the presence of the transient high voltages that VFTO is provided, resistivity rapid decrease in the Pa electricity areas, the direction of propagation of the electric charge that insulator surface is assembled along Pa electricity areas, mounting flange is set to dissipate, VFTO can be suppressed and form charge buildup on conical insulator surface, the reliability of insulator is kept, reduces the electric field distortion of insulator surface, improves the stability of GIS device operation.
Description
Technical field
The application is related to electrical equipment technical field, more particularly to a kind of conical insulator for suppressing function with VFTO.
Background technology
GIS (Gas Insulated Switchgear, gas insulation metal seal combined electrical apparatus) have floor space with
Spatial volume is small, it is safe and reliable to operation, by natural environment influence is small, breaker break performance is good, the various features such as easy for installation,
Therefore it is widely used in AC Substation.Insulator is critically important insulating element in GIS, play fixed, insulation and
The effect such as sealing.
At present, the insulator commonly used in GIS device includes center abaculus, insulation layer and connecting seat.When there is VFTO (Very
Fast transient overvoltage, fast transient overvoltage) when acting on the insulator surface, the insulator can not make
Electric-charge-dissipating, so as to cause insulator to bear larger DC voltage, and then cause to bear at a relatively high transient voltage on insulator,
Serious harm is brought to insulator stable operation.In addition, in GIS runnings, in the presence of VFTO, insulator surface also will
Introduce electric charge, this will make bus section, busbar section insulator in the process of running Electric Field Distribution by serious distortion, it is easy to trigger along face
Flashover, and then cause electrical equipment damage or power system large-area power-cuts.
In recent years, surface charge accumulation retention problems in current GIS runnings are solved, are insulated in the presence of raising VFTO
Sub- operation stability, it will turn into and improve exchange GIS operation stabilities, and solve that not clear dodge occurs in exchange GIS runnings
The key of network problem, there is great significance of scientific research and application value.However, so far, most of correlative study remains in
Simulation analysis, and the study on the modification of small test product sample block, the taper for suppressing function with VFTO with commercial Application potential
Insulator is still rarely reported.
Utility model content
The application provides a kind of conical insulator for suppressing function with VFTO, to solve in the presence of VFTO, insulation
Sublist surface charge is assembled, the problem of causing GIS device fluctuation of service.
A kind of conical insulator for suppressing function with VFTO, including：Center insert, insulation layer, Pa electricity areas and fixation
Orchid, wherein, the center insert is arranged at the top of a conulite, and the cone is close to one end of the center insert
The insulation layer, remainder are the Pa electricity areas, and the bottom in the Pa electricity areas is connected with the mounting flange.
Optionally, the center insert includes abaculus, retainer ring and stay hook；The abaculus is column structure, described embedding
The side wall of block is provided with multiple grooves and projection, and the projection is provided with the retainer ring, and the retainer ring is provided with institute
State stay hook.
Optionally, the upper bottom surface of the abaculus and bottom surface centre are respectively equipped with a positioning hole；The upper bottom surface
Or bottom surface is provided with multiple bolt fixing holes.
Optionally, the insulation layer is epoxy resin-matrix alumina insulation area.
Optionally, the Pa electricity areas are that epoxy resin-matrix silicon carbide filler Pa electricity areas, epoxy resin-matrix zinc oxide fillers are climbed
Any of electric area or epoxy resin-matrix Oxidation of SiC zinc compound Pa electricity areas.
Optionally, the drift angle of the cone is any value between 60 degree to 150 degree.
The technical scheme that the application provides includes following advantageous effects：
The conical insulator that the embodiment of the present application provides, Pa electricity areas are additionally provided with below insulation layer, are set in the Pa electricity areas
There are the non-linear filler that resistivity converts with environment, including zinc oxide, carborundum or zinc oxide and silicon carbide blend micron
Particle, its resistivity is protected from environmental and changes.When there is additional VFTO to act on insulator surface, provided in VFTO
In the presence of transient high voltages, the resistivity rapid decrease of the non-linear filler of regional area, makes insulator surface in Pa electricity areas
Dissipate the direction of propagation of the electric charge of aggregation along Pa electricity areas, mounting flange, you can suppress what VFTO was formed on conical insulator surface
Charge buildup, the reliability of insulator is kept, reduce the electric field distortion of insulator surface, improve the stability of GIS device operation.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the application, letter will be made to the required accompanying drawing used in embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation for conical insulator for suppressing function with VFTO that the embodiment of the present application provides.
Fig. 2 is the structural representation for the center insert that the embodiment of the present application provides.
The VFTO oscillograms applied at the center insert that Fig. 3 the embodiment of the present application provides.
Potential energy diagrams of the Fig. 4 for the high-field electrode that the embodiment of the present application provides to insulator mounting flange.
Description of reference numerals：
1st, center insert；11st, abaculus；12nd, retainer ring；13rd, stay hook；14th, positioning hole；15th, bolt fixing hole；2nd, insulate
Area；3rd, Pa electricity areas；4th, mounting flange.
Embodiment
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the application
Example, and be used to together with specification to explain the principle of the application.
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Embodiment 1
Fig. 1 is a kind of structural representation for conical insulator for suppressing function with VFTO that the embodiment of the present application provides.
Referring to Fig. 1, the conical insulator includes：Center insert 1, insulation layer 2, Pa electricity areas 3 and mounting flange 4.Wherein, the center insert
1 is arranged at the top of a conulite, and the cone is divided into two parts, wherein being insulation layer close to one end of center insert 1
2, remainder is Pa electricity areas 3, and the bottom in the Pa electricity areas 3 is connected with mounting flange 4.That is, the vertical of the insulator cuts
Face is " V " type structure.
Optionally, the insulation layer 2 that the embodiment of the present application provides is epoxy resin-matrix aluminum oxide edge area, and the content of aluminum oxide is
Any value between 10-15%.It should be noted that content described in the application refers both to mass percent.
Pa electricity areas 3 are epoxy resin-matrix silicon carbide filler Pa electricity areas, wherein, the content of carborundum is between 10-15%
Any value.The carborundum is nano-scale particle, to ensure that the particulate can be dispersed in epoxy resin-matrix body.Or
The insulation layer 2 that the embodiment of the present application provides is epoxy resin-matrix zinc oxide fillers Pa electricity areas.Wherein, the content of zinc oxide is also
Any value between 10-15%.Or the insulation layer 2 that the embodiment of the present application provides mixes for epoxy resin-matrix Oxidation of SiC zinc
He Liaopa electricity areas.Wherein, the content of the Oxidation of SiC zinc compound also any value between 10-15%.
It should be noted that carborundum and zinc oxide are to be semi-conducting material, its electric conductivity is led between conductor and partly
Between body.In the presence of high voltage, the resistivity of the semi-conducting material such as carborundum and zinc oxide is in nonlinear change with voltage,
Resistivity can be reduced, and electric conductivity is improved.In this application, resistivity is claimed with voltage in the material of nonlinear change
For nonlinear material.
Optionally, the drift angle for the cone that the present embodiment provides is any value between 60 degree to 150 degree, for example, the cone
Drift angle can be 90 degree.
Fig. 2 is the structural representation for the center insert 1 that the embodiment of the present application provides.Referring to Fig. 2, the center insert 1 includes
Abaculus 11, retainer ring 12 and stay hook 13.The abaculus 11 is column structure, and the column structure can be cylinder or cube
Aluminium block.The side wall of the column abaculus 11 is rough structure, provided with multiple grooves and projection.Wherein, part is raised
The retainer ring 12 is provided with, for example, being respectively equipped with one in equally distributed four projections on the column side wall sustained height line
Retainer ring 12.The retainer ring 12 is connected with raised interference, prevents retainer ring 12 from being come off from abaculus 11.The retainer ring 12 is any one
The side wall of side is provided with stay hook 13, and the stay hook 13 is arranged in the retainer ring 12 by bolt.Specifically, the bolt is successively
Through stay hook 13, the upper wall of retainer ring 12, projection, the lower wall of retainer ring 12, reuse during stay hook 13 is tightly fixed to by nut
On heart inserts 1.
It should be noted that in the embodiment of the present application, the above-mentioned projection being arranged at around abaculus 11, groove and stay hook
13, contribute to ensure insulator during manufacture, center insert 1 can be closely connected with insulation layer 2, avoid making
During, center insert 1 comes off from insulator.
Optionally, the upper bottom surface for the abaculus 11 that the embodiment of the present application provides and bottom surface centre are respectively equipped with one and determined
Position hole 14, for assigning alignment pin, ensure insulator during manufacture, the position of center insert 1 is without departing from default position
Put.
In addition, the upper bottom surface or bottom surface of the abaculus 11 are provided with multiple bolt fixing holes 15, for the insulator to be consolidated
Due in GIS device.Exemplary, the quantity of the bolt fixing hole 15 is 4, is uniformly arranged on the surrounding of the positioning hole 14.
The conical insulator that the embodiment of the present application provides also is set on the basis of conventional insulators in the lower section of insulation layer 2
You Pa electricity areas 3, the interior non-linear filler converted provided with resistance rate with environment in the Pa electricity areas 3, its resistivity is protected from environmental and becomes
Change.When there is additional VFTO to act on insulator surface, in the presence of the transient high voltages that VFTO is provided, in Pa electricity areas 3
The resistivity rapid decrease of the non-linear filler of regional area, make the electric charge that insulator surface is assembled along Pa electricity areas 3, mounting flange
Dissipate 4 direction of propagation, you can suppress the charge buildup that VFTO is formed on conical insulator surface, keep the reliable of insulator
Property, reduce the electric field distortion of insulator surface, improve the stability that GIS device is run.
Embodiment 2
The all parts for the conical insulator that the embodiment of the present application 1 provides, including center insert 1, insulation layer 2, Pa electricity areas 3
With mounting flange 4, integrated attachment structure, rather than connected by modes such as bolt, screws.The present embodiment is then main right
The preparation method of the conical insulator illustrates.
The integrated conical insulator that the embodiment of the present application provides is prepared by the method for vacuum casting.GIS's
In running, in the presence of VFTO, insulator surface can introduce electric charge.Compared to bolt connection, integrated connection knot
Structure advantageously reduces the resistance of insulator in itself, is easy to be gathered in the electric-charge-dissipating of insulator surface.
Specifically, the integrated conical insulator preparation method that the embodiment of the present application provides is as follows：
(1) center insert 1 is prepared.Including preparing abaculus 11, in the raised installation retainer ring 12 of the side wall of abaculus 11, and use
Stay hook 13 is fixed in the retainer ring 12 by bolt；Also include preparing above-mentioned positioning hole 14 and bolt fixing hole 15.
(2) casting insulation area 2.Center insert 1 is placed in insulator mold, it is respectively that center is embedding using positioning hole 14
The upper bottom surface of part 1 is fixed in the upper and lower mould of mould, curing agent is added in epoxy resin-matrix alumina packing, using vacuum
Casting process casting insulation area 2, makes the side wall of insulation layer 2 and center insert 1 combine closely.The projection of the side wall, groove and solid
The side wall brought close of insulation layer 2 and center insert 1 can be promoted by determining hook 13, form a firm entirety.
(3) casting Pa electricity areas 3 and mounting flange 4.About four hours after the casting of insulation layer 2 terminates, the material of insulation layer 2
Material has solidified, now on the basis of previous step, in epoxy resin-matrix silicon carbide filler, or epoxy resin base silicon carbide oxygen
Change and curing agent is added in zinc compound, casting Pa electricity areas 3 and mounting flange 4.After filler solidification, you can it is real to obtain the application
The conical insulator of example offer is provided.
Embodiment 3
The present embodiment respectively using Pa electricity areas 3 non-linear filler content be respectively 0%, 10% and 15% taper it is exhausted
Edge carries out VFTO ripples and applies experiment, specific as follows shown to detect dissipation effect of the conical insulator to surface charge.
The VFTO oscillograms applied at the center insert 1 that Fig. 3 the embodiment of the present application provides.Insulated in each above-mentioned taper
Apply the VFTO ripples at the center insert 1 of son, and gather high-field electrode to the surface of each conical insulator surface mounting flange 4
Potential data, high-field electrode as shown in Figure 4 is obtained to the potential energy diagram of the mounting flange 4 of insulator.
From fig. 4, it can be seen that in Pa electricity areas 3 nonlinear material content be 0% insulator surface potential highest, its
Secondary is the insulator that content is 10%, and content be 15% insulator surface potential it is minimum, and rejection ability is with mixing
Miscellaneous content increases and increased.As can be seen here, the conical insulator, which substantially serves, suppresses VFTO effect insulator following table surface charges
The effect of accumulation.
It should be noted that term " comprising ", "comprising" or its any other variant are intended to the bag of nonexcludability
Contain, so that article or equipment including a series of elements not only include those key elements, but also including not arranging clearly
The other element gone out, or also include for this process, method, article or the intrinsic key element of equipment.Not more
In the case of limitation, the key element that is limited by sentence "including a ...", it is not excluded that in the process including the key element, side
Other identical element in method, article or equipment also be present.
Described above is only the embodiment of the application, is made skilled artisans appreciate that or realizing this Shen
Please.A variety of modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments in the case where not departing from spirit herein or scope.Therefore, the application
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
It should be appreciated that the content that the application is not limited to be described above and is shown in the drawings, and can
To carry out various modifications and changes without departing from the scope.Scope of the present application is only limited by appended claim.
Claims (6)
- A kind of 1. conical insulator for suppressing function with VFTO, it is characterised in that including：Center insert (1), insulation layer (2), Pa electricity areas (3) and mounting flange (4), wherein, the center insert (1) is arranged at the top of a conulite, the cone One end close to the center insert (1) is the insulation layer (2), and remainder is the Pa electricity areas (3), the Pa electricity areas (3) bottom is connected with the mounting flange (4).
- 2. the conical insulator according to claim 1 for suppressing function with VFTO, it is characterised in that the center insert (1) abaculus (11), retainer ring (12) and stay hook (13) are included；The abaculus (11) is column structure, the abaculus (11) Side wall is provided with multiple grooves and projection, and the projection is provided with the retainer ring (12), and retainer ring (12) are provided with The stay hook (13).
- 3. the conical insulator according to claim 2 for suppressing function with VFTO, it is characterised in that the abaculus (11) Upper bottom surface and bottom surface centre be respectively equipped with a positioning hole (14)；The upper bottom surface or bottom surface are provided with multiple spiral shells Bolt fixing hole (15).
- 4. the conical insulator according to claim 1 for suppressing function with VFTO, it is characterised in that the insulation layer (2) it is epoxy resin-matrix alumina insulation area.
- 5. the conical insulator according to claim 1 for suppressing function with VFTO, it is characterised in that the Pa electricity areas (3) it is epoxy resin-matrix silicon carbide filler Pa electricity areas, epoxy resin-matrix zinc oxide fillers Pa electricity areas or epoxy resin-matrix carbonization Any of silicon zinc oxide compound Pa electricity areas.
- 6. the conical insulator according to claim 1 for suppressing function with VFTO, it is characterised in that the top of the cone Angle is any value between 60 degree to 150 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721114114.4U CN207116135U (en) | 2017-09-01 | 2017-09-01 | A kind of conical insulator for suppressing function with VFTO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721114114.4U CN207116135U (en) | 2017-09-01 | 2017-09-01 | A kind of conical insulator for suppressing function with VFTO |
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| Publication Number | Publication Date |
|---|---|
| CN207116135U true CN207116135U (en) | 2018-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721114114.4U Active CN207116135U (en) | 2017-09-01 | 2017-09-01 | A kind of conical insulator for suppressing function with VFTO |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107393662A (en) * | 2017-09-01 | 2017-11-24 | 云南电网有限责任公司电力科学研究院 | A kind of conical insulator for suppressing function with VFTO |
-
2017
- 2017-09-01 CN CN201721114114.4U patent/CN207116135U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107393662A (en) * | 2017-09-01 | 2017-11-24 | 云南电网有限责任公司电力科学研究院 | A kind of conical insulator for suppressing function with VFTO |
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