CN110208669A - The device and method of insulation degradation between simulation oil immersed type capacitor panel of current transformer - Google Patents
The device and method of insulation degradation between simulation oil immersed type capacitor panel of current transformer Download PDFInfo
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- CN110208669A CN110208669A CN201910558314.6A CN201910558314A CN110208669A CN 110208669 A CN110208669 A CN 110208669A CN 201910558314 A CN201910558314 A CN 201910558314A CN 110208669 A CN110208669 A CN 110208669A
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- 238000009413 insulation Methods 0.000 title claims abstract description 84
- 230000015556 catabolic process Effects 0.000 title claims abstract description 55
- 238000006731 degradation reaction Methods 0.000 title claims abstract description 43
- 239000003990 capacitor Substances 0.000 title claims abstract description 30
- 238000004088 simulation Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000006866 deterioration Effects 0.000 claims abstract description 47
- 238000007654 immersion Methods 0.000 claims description 42
- 239000000463 material Substances 0.000 claims description 24
- 239000005030 aluminium foil Substances 0.000 claims description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 230000002542 deteriorative effect Effects 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 8
- 230000005611 electricity Effects 0.000 description 6
- 230000032683 aging Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/16—Construction of testing vessels; Electrodes therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/20—Preparation of articles or specimens to facilitate testing
Abstract
The invention discloses a kind of device and methods of insulation degradation between simulation oil immersed type capacitor panel of current transformer.The device of the invention, including high pressure leading-out end, top cover, cylinder, ground connection leading-out end；A closed housing and filling transformer oil are formed after top cover and cylinder combination, top cover is equipped with a suction interface, setting high-field electrode and grounding electrode in cylinder, high pressure leading-out end is set to the middle position of top cover, ground connection leading-out end is set to the bottom middle position of cylinder, and the capacitance plate of multilayer overlapped in series is arranged between high-field electrode and grounding electrode；The capacitance plate of multilayer overlapped in series includes multilayer normal layer capacitance plate and at least one layer of deterioration layer capacitance screen, deteriorates layer capacitance screen to the insulation degradation and/or breakdown channel between simulating different capacitance plates.The present invention can effectively and system simulation oil-immersed current transformer difference capacitance plate between insulation degradation, to understand its performance characteristic, and insulation on-site test and status assessment etc. have very important significance.
Description
Technical field
The invention belongs to paper oil insulation technical field, between specifically a kind of simulation oil immersed type capacitor panel of current transformer
The device and method of insulation degradation.
Background technique
Cost is relatively low, passes through the advantages such as electric current is larger, operational reliability is higher since it has for oil-immersed current transformer
It is widely used in the power system.The major insulation of oil-immersed current transformer usually uses multilayer oil-paper and aluminium foil
The structure being stacked alternately forces balanced internal and surface electric field to constitute multi-layer capacity screen.
However, the oil due to the effect of electricity, heat, mechanical couplings field in defective workmanship or actual moving process, between capacitance plate
Shelf depreciation easily occurs for impregnated paper material, and then minor insulation is caused to deteriorate.With the further development of shelf depreciation, oil immersion paper wood
Material further deteriorates, and easily occurs highly conductive channel in insulating materials, and then hit between initiation oil-immersed current transformer capacitance plate
The accident worn, and there is burning risk in oil-immersed current transformer, seriously affect the safe and stable operation of substation.Therefore, it grinds
The device for studying carefully insulation degradation between capable of simulating oil immersed type capacitor panel of current transformer, between understanding oil-immersed current transformer capacitance plate
The performance characteristic of insulation degradation, and insulation on-site test and status assessment are all of great significance.
Insulation degradation happens occasionally between the capacitance plate of oil-immersed current transformer, but is at present only to rest on to return factory's disintegration
It checks, with the insulation degradation or breakdown channel checked between capacitance plate.The data for returning factory's disintegration stage are oil-immersed current mutual inductance
The a certain particular stage of insulation degradation between device capacitance plate still lacks a kind of effective and system simulation oil-immersed current transformer electricity
The model of insulation degradation between Rong Ping has seriously affected diagnosis and inspection for insulation degradation between oil-immersed current transformer capacitance plate
Out.
Summary of the invention
In view of the above technical problems, the object of the present invention is to provide exhausted between a kind of simulation oil immersed type capacitor panel of current transformer
The device and method of edge deterioration.
To achieve the above object, the technical solution adopted by the present invention is that: simulation oil immersed type capacitor panel of current transformer between absolutely
The device of edge deterioration comprising high pressure leading-out end, top cover, cylinder, ground connection leading-out end；
A closed housing and filling transformer oil are formed after the top cover and cylinder combination；The top cover is equipped with a pumping and connects
Mouthful；
Setting high-field electrode and grounding electrode in the cylinder；
The high pressure leading-out end is set to the middle position of top cover, for connecting high-field electrode；
The ground connection leading-out end is set to the bottom middle position of cylinder, for connecting grounding electrode；
The capacitance plate of multilayer overlapped in series is set between the high-field electrode and grounding electrode；
The capacitance plate of the multilayer overlapped in series includes multilayer normal layer capacitance plate and at least one layer of deterioration layer capacitance screen, deteriorates layer
Capacitance plate is to the insulation degradation and/or breakdown channel between simulating different capacitance plates.
Further, every layer of normal layer capacitance plate includes one layer of oil immersion normal insulation paper, the oil immersion normal insulation paper
One layer of aluminium foil is respectively set in upper and lower two sides；Every layer of deterioration layer capacitance screen includes that one layer of oil immersion deteriorates insulating paper, the oil immersion deterioration
One layer of aluminium foil is respectively set in the upper and lower two sides of insulating paper.
Further, the number of plies of the normal layer capacitance plate is two layers, and the number of plies of deterioration layer capacitance screen is one layer；Wherein,
The number of oil immersion normal insulation paper is four layers, and the number that oil immersion deteriorates insulating paper is one layer, and the number of aluminium foil is four layers.
Further, the diameter of the oil immersion normal insulation paper and oil immersion deterioration insulating paper is 150-250mm, and thickness is equal
For 1.0-2.0mm；The diameter of the aluminium foil is 150-250mm, with a thickness of 50-150 μm.
Further, the high-field electrode and grounding electrode are all made of the round copper electrode with connector lug, copper electrode
Diameter is 200-300mm, with a thickness of 10-30mm.
Further, the height of the filling transformer oil of the closed housing is to be more than top layer's oil immersion normal insulation paper
1.5cm is standard.
Further, the device of insulation degradation further includes multiple exhausted between the simulation oil immersed type capacitor panel of current transformer
The surrounding of edge pull rod, the high-field electrode and grounding electrode is uniformly provided with multiple edge through-holes, and high-field electrode and grounding electrode
Edge through-hole correspond, the insulated pull rod is each passed through after the edge through-hole of high-field electrode and grounding electrode solid with nut
It is fixed.
Further, the edge through-hole diameter of the high-field electrode and grounding electrode is 10-30mm；The insulated pull rod
Length is 150-250mm, diameter 10-30mm.
Further, the device of insulation degradation further includes fixation between the simulation oil immersed type capacitor panel of current transformer
It is tightly connected after orchid, the top cover and cylinder combination by mounting flange；The material of the top cover and cylinder is organic glass.
The present invention also provides it is a kind of using above-mentioned apparatus carry out simulation oil immersed type capacitor panel of current transformer between insulate it is bad
The method of change comprising following steps:
S1, the oil-immersed current transformer using different oil-immersed insulating papers simulated as needed select capacitor screen material；According to
The oil-immersed current transformer for needing different voltages grade to be simulated, selects the capacitance plate number of plies of overlapped in series；Mould as needed
Insulation degradation and/or breakdown channel between quasi- different capacitance plates, the number of plies and deterioration insulation paper wood of selection deterioration layer capacitance screen
Material；
S2, selected capacitor screen material, the capacitance plate number of plies, the number of plies for deteriorating layer capacitance screen and deterioration insulation paper material are placed
Between high-field electrode and grounding electrode；
After the completion of S3, overlap joint, nut is used after multiple insulated pull rods to be each passed through to the edge through-hole of high-field electrode and grounding electrode
Fixed, realization fastens all capacitance plates, to ensure that the gas gap between each layer capacitance screen is in smaller level；
S4, high-field electrode is connect with high pressure leading-out end, by grounding electrode with ground connection leading-out end connect, then will treated change
Depressor oil pours into cylinder, to be more than top layer's oil immersion normal insulation paper 1.5cm as standard, finally connects top cover and cylinder sealing
It connects, suction interface is controlled to a vacuum pump, and air pressure is maintained at 150-250Pa, continues 10-14h；
S5, to voltage is applied between high-field electrode and grounding electrode, carry out insulation degradation simulated experiment between capacitance plate.
The present invention is after adopting the above technical scheme, have the beneficial effect that the device of the invention structure is simple, operation side
Just；The present invention can arbitrarily change the material of capacitance plate, to simulate the oil-immersed current transformer using different materials casting；Energy
Enough any capacitance plate numbers of plies for changing overlapped in series, to simulate the oil-immersed current transformer of different voltages grade；It can be any
The number of plies and deterioration insulation paper material for changing capacitance plate deterioration layer, are gradually developed with simulation deterioration channel, bridge different number electricity
The case where holding screen；And then it effectively and systematically simulates the insulation degradation between oil-immersed current transformer difference capacitance plate and/or hits
Break-through road, between the performance characteristic of the insulation degradation understanding oil-immersed current transformer difference capacitance plate, and the inspection of insulation scene
Survey and status assessment etc. have very important significance.
Detailed description of the invention
Fig. 1 is the device of insulation degradation between the simulation oil immersed type capacitor panel of current transformer that one embodiment of the invention uses
Structural schematic diagram；
In figure, 1- high pressure leading-out end, 2- top cover, 3- cylinder, 4- ground connection leading-out end, 5- high-field electrode, 6- grounding electrode, 7- insulation
Pull rod, 8- aluminium foil, 9- oil immersion normal insulation paper, 10- oil immersion deteriorate insulating paper, 11- mounting flange, 12- suction interface.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1, it is of the present invention it is a kind of simulation oil immersed type capacitor panel of current transformer between insulation degradation device,
Including high pressure leading-out end 1, top cover 2, cylinder 3, ground connection leading-out end 4 and multiple insulated pull rods 7, top cover 2 and the combination of cylinder 3 form one
It is tightly connected after closed housing with mounting flange 11, and the filling transformer oil in cylinder 3.Top cover 2 is equipped with a suction interface
12, cylinder 3 is interior to be arranged high-field electrode 5 and grounding electrode 6.High pressure leading-out end 1 is set to the middle position of top cover 2, for connecting
High-field electrode 5, ground connection leading-out end 4 is set to the bottom middle position of cylinder 3, for connecting grounding electrode 6.5 He of high-field electrode
The capacitance plate of multilayer overlapped in series is provided between grounding electrode 6, the capacitance plate of multilayer overlapped in series includes normal layer capacitance plate
With deterioration layer capacitance screen, wherein deterioration layer capacitance screen be at least one layer, to simulate the insulation degradation between different capacitance plates and/
Or breakdown channel.The surrounding of high-field electrode 5 and grounding electrode 6 is uniformly provided with multiple edges through-hole, and high-field electrode 5 and ground connection electricity
The edge through-hole of pole 6 corresponds, and insulated pull rod 7 uses nut after being each passed through the edge through-hole of high-field electrode 5 and grounding electrode 6
Fixed, realization fastens all capacitance plates, to ensure that the gas gap between each layer capacitance screen is in smaller level.
The present invention can arbitrarily change the material of capacitance plate, to simulate the oil-immersed current mutual inductance using different materials casting
Device.Preferably as of the invention one, wherein every layer of normal layer capacitance plate is by one layer of oil immersion normal insulation paper 9 and two layers of aluminium
Foil 8 is constituted, i.e., one layer of aluminium foil 8, that is, oil immersion normal insulation paper 9 is respectively set in the two sides up and down of oil immersion normal insulation paper 9
Its immediate two layers of aluminium foil 8 constitutes one layer of normal layer capacitance plate.Every layer of deterioration layer capacitance screen is by one layer of oil immersion deterioration insulation
Paper 10 and two layers of aluminium foil 8 are constituted, i.e., one layer of aluminium foil 8, that is, oil are respectively set in the two sides up and down of oil immersion deterioration insulating paper 10
Its immediate two layers of the aluminium foil 8 of leaching deterioration insulating paper 10 constitutes one layer of deterioration layer capacitance screen.Normal layer capacitance plate i.e. of the invention
It is simulated using oil immersion normal insulation paper 9, deterioration layer (and/or breakdown layer) capacitance plate is simulated using oil immersion deterioration insulating paper 10.Into
One step, the present invention can also arbitrarily change the capacitance plate number of plies of overlapped in series, to simulate the oil immersed type electricity of different voltages grade
Current transformer.In view of the channel development of layer insulation deterioration, it can also arbitrarily change deterioration layer electricity according to actual demand
The number of plies and deterioration insulation paper material of Rong Ping, the case where gradually developing with simulation deterioration channel, bridge different number capacitance plates, under
Face is described in detail by a specific embodiment.
Embodiment 1
As shown in Figure 1, it is a kind of simulation oil immersed type capacitor panel of current transformer between insulation degradation device, which includes that high pressure is drawn
Lift one's head 1, top cover 2, cylinder 3 is grounded leading-out end 4, and high-field electrode 5, grounding electrode 6, insulated pull rod 7, aluminium foil 8, oil immersion is normally exhausted
Edge paper 9, oil immersion deteriorate insulating paper 10, mounting flange 11, suction interface 12.
The device of insulation degradation is in 5 He of high-field electrode between simulation oil immersed type capacitor panel of current transformer described in the present embodiment
Three layer capacitance screens are provided between grounding electrode 6, wherein the number of plies of normal layer capacitance plate is two layers, deteriorates the layer of layer capacitance screen
Number is one layer.Wherein, the number of oil immersion normal insulation paper 9 is four layers, and the number that oil immersion deteriorates insulating paper 10 is one layer, aluminium foil 8
Number be four layers.Its immediate two layers of the aluminium foil 8 of oil immersion normal insulation paper 9 constitutes one layer of normal layer capacitance plate, oil immersion deterioration
Its immediate two layers of the aluminium foil 8 of insulating paper 10 constitutes one layer of deterioration layer capacitance screen.
Preferably, the diameter of oil immersion normal insulation paper 9 is 200mm, and thickness is 1.5mm, and insulation resistance is 30T Ω.Oil
The diameter of leaching deterioration insulating paper 10 is 200mm, and thickness is 1.5mm.The diameter of aluminium foil 8 is 200mm, with a thickness of 100 μm.
Preferably, high-field electrode 5 and grounding electrode 6 are all made of the round copper electrode with connector lug, the diameter of copper electrode
For 250mm, with a thickness of 20mm.
Preferably, the length of insulated pull rod 7 is 200mm, diameter 20mm.The edge of high-field electrode 5 and grounding electrode 6 is logical
Bore dia is 20mm, is fixed to penetrate insulated pull rod 7.In the present embodiment, insulated pull rod preferably uses nylon rod.
As a preferred embodiment of the present invention, the breakdown situation in cylinder 3 in order to facilitate observation of, top cover 2 and cylinder 3
Material is all made of organic glass.
The normal layer capacitance plate of the present embodiment is simulated using oil immersion normal insulation paper 9, and deterioration layer capacitance screen is bad using oil immersion
Change insulating paper 10 to simulate.
In operating conditions, partial discharge and hot-spot effect meeting are so that certain oil-immersed insulating paper prints deteriorate, therefore
The oil-immersed insulating paper material under different electric heating joint ageing times can be used to characterize different degradations.In the present embodiment
In, the number for deteriorating layer is preferably 1 layer, using oil immersion deterioration insulating paper after electric heating joint aging lower 10 hours as deterioration layer
Insulating materials.
In view of the channel of layer insulation deterioration may further be developed, it can also suitably increase deterioration according to actual demand
The number of plies of layer capacitance screen, to simulate insulation degradation and/or breakdown channel between different capacitance plates.
After the completion of overlap joint, four insulated pull rods 7 are each passed through to four edge through-holes of high-field electrode 5 and grounding electrode 6
After be secured with nuts, realization all capacitance plates are fastened, with ensure the gas gap between each layer capacitance screen be in it is smaller
It is horizontal.High-field electrode 5 is connect with high pressure leading-out end 1, grounding electrode 6 is connect with ground connection leading-out end 4, then by treated
Transformer oil pours into cylinder 3, and the height of the filling transformer oil of 3 cavity of cylinder is to be more than top layer's oil immersion normal insulation paper 1.5cm
For standard, finally top cover 2 and cylinder 3 are tightly connected, suction interface 12 is controlled to a vacuum pump, and air pressure is maintained at 200Pa, is continued
12h.Voltage is applied to high-field electrode 5 and grounding electrode 6, simulate insulation degradation and/or breakdown between different capacitance plates and leads to
Road.
The present invention also provides a kind of methods of insulation degradation between simulation dry-type transformer capacitance of bushing screen, including walk as follows
It is rapid:
S1, the oil-immersed current transformer using different oil-immersed insulating papers simulated as needed select capacitor screen material；According to
The oil-immersed current transformer for needing different voltages grade to be simulated, selects the capacitance plate number of plies of overlapped in series；Mould as needed
Insulation degradation and/or breakdown channel between quasi- different capacitance plates, the number of plies and deterioration insulation paper wood of selection deterioration layer capacitance screen
Material；
S2, selected capacitor screen material, the capacitance plate number of plies, the number of plies for deteriorating layer and deterioration insulation paper material are placed in high pressure
Between electrode 5 and grounding electrode 6；
After the completion of S3, overlap joint, spiral shell is used after multiple insulated pull rods 7 to be each passed through to the edge through-hole of high-field electrode 5 and grounding electrode 6
Mother is fixed, and realization fastens all capacitance plates, to ensure that the gas gap between each layer capacitance screen is in smaller level；
S4, high-field electrode 5 is connect with high pressure leading-out end 1, grounding electrode 6 is connect with ground connection leading-out end 4,
Then by treated, transformer oil pours into cylinder 3, to be more than top layer's oil immersion normal insulation paper 1.5cm as standard, most
Top cover 2 and cylinder 3 are tightly connected afterwards, suction interface 12 is controlled to a vacuum pump, and air pressure is maintained at 200Pa, continues 12h；
S5, to voltage is applied between high-field electrode 5 and grounding electrode 6, carry out insulation degradation simulated experiment between capacitance plate.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the present invention can also have various modifications and variations.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. simulating the device of insulation degradation between oil immersed type capacitor panel of current transformer, which is characterized in that including high pressure leading-out end
(1), top cover (2), cylinder (3), ground connection leading-out end (4)；
A closed housing and filling transformer oil are formed after the top cover (2) and cylinder (3) combination；The top cover (2) is equipped with
One suction interface (12)；
Setting high-field electrode (5) and grounding electrode (6) in the cylinder (3)；
The high pressure leading-out end (1) is set to the middle position of top cover (2), for connecting high-field electrode (5)；
Ground connection leading-out end (4) is set to the bottom middle position of cylinder (3), for connecting grounding electrode (6)；
The capacitance plate of multilayer overlapped in series is set between the high-field electrode (5) and grounding electrode (6)；
The capacitance plate of the multilayer overlapped in series includes multilayer normal layer capacitance plate and at least one layer of deterioration layer capacitance screen, deteriorates layer
Capacitance plate is to the insulation degradation and/or breakdown channel between simulating different capacitance plates.
2. the device of insulation degradation, feature exist between simulation oil immersed type capacitor panel of current transformer according to claim 1
In every layer of normal layer capacitance plate includes one layer of oil immersion normal insulation paper (9), the upper and lower two sides of the oil immersion normal insulation paper (9)
One layer of aluminium foil (8) is respectively set；Every layer of deterioration layer capacitance screen includes that one layer of oil immersion deteriorates insulating paper (10), and the oil immersion deterioration is exhausted
One layer of aluminium foil (8) is respectively set in the upper and lower two sides of edge paper (10).
3. the device of insulation degradation, feature exist between simulation oil immersed type capacitor panel of current transformer according to claim 2
In the number of plies of the normal layer capacitance plate is two layers, and the number of plies of deterioration layer capacitance screen is one layer；Wherein, oil immersion normal insulation paper
(9) number is four layers, and the number that oil immersion deteriorates insulating paper (10) is one layer, and the number of aluminium foil (8) is four layers.
4. the device of insulation degradation, feature between simulation oil immersed type capacitor panel of current transformer according to claim 2 or 3
It is, the diameter of the oil immersion normal insulation paper (9) and oil immersion deterioration insulating paper (10) is 150-250mm, and thickness is
1.0-2.0mm；The diameter of the aluminium foil (8) is 150-250mm, with a thickness of 50-150 μm.
5. the device of insulation degradation, feature between simulation oil immersed type capacitor panel of current transformer according to claim 2 or 3
It is, the high-field electrode (5) and grounding electrode (6) are all made of the round copper electrode with connector lug, and the diameter of copper electrode is
200-300mm, with a thickness of 10-30mm.
6. the device of insulation degradation, feature between simulation oil immersed type capacitor panel of current transformer according to claim 2 or 3
It is, the height of the filling transformer oil of closed housing is to be more than top layer's oil immersion normal insulation paper 1.5cm as standard.
7. the device of insulation degradation, feature between simulation oil immersed type capacitor panel of current transformer according to claim 2 or 3
It is, further includes multiple insulated pull rods (7), the surrounding of the high-field electrode (5) and grounding electrode (6) is uniformly provided with multiple edges
Through-hole, and the edge through-hole of high-field electrode (5) and grounding electrode (6) corresponds, the insulated pull rod (7) is each passed through high pressure
It is secured with nuts after the edge through-hole of electrode (5) and grounding electrode (6).
8. the device of insulation degradation, feature exist between simulation oil immersed type capacitor panel of current transformer according to claim 7
In the edge through-hole diameter of the high-field electrode (5) and grounding electrode (6) is 10-30mm；The length of the insulated pull rod (7)
For 150-250mm, diameter 10-30mm.
9. the device of insulation degradation, feature between simulation oil immersed type capacitor panel of current transformer according to claim 2 or 3
It is, further includes mounting flange (11), is tightly connected after the top cover (2) and cylinder (3) combination by mounting flange (11)；Institute
The material for stating top cover (2) and cylinder (3) is organic glass.
10. a kind of insulate between simulation oil immersed type capacitor panel of current transformer using any one of claim 1 to 9 described device
The method of deterioration, which comprises the steps of:
S1, the oil-immersed current transformer using different oil-immersed insulating papers simulated as needed select capacitor screen material；According to
The oil-immersed current transformer for needing different voltages grade to be simulated, selects the capacitance plate number of plies of overlapped in series；Mould as needed
Insulation degradation and/or breakdown channel between quasi- different capacitance plates, the number of plies and deterioration insulation paper wood of selection deterioration layer capacitance screen
Material；
S2, selected capacitor screen material, the capacitance plate number of plies, the number of plies for deteriorating layer capacitance screen and deterioration insulation paper material are placed
Between high-field electrode (5) and grounding electrode (6)；
After the completion of S3, overlap joint, multiple insulated pull rods (7) are each passed through to the edge through-hole of high-field electrode (5) and grounding electrode (6)
After be secured with nuts, realization all capacitance plates are fastened；
S4, high-field electrode (5) is connect with high pressure leading-out end (1), grounding electrode (6) is connect with ground connection leading-out end (4), then
By treated, transformer oil pours into cylinder (3), finally will top to be more than top layer's oil immersion normal insulation paper 1.5cm as standard
It covers (2) and cylinder (3) to be tightly connected, suction interface (12) is controlled to a vacuum pump, and air pressure is maintained at 150-250Pa, continues 10-
14h；
S5, to voltage is applied between high-field electrode (5) and grounding electrode (6), carry out insulation degradation simulated experiment between capacitance plate.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111856381A (en) * | 2020-07-27 | 2020-10-30 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Disassembling and defect checking method of oil-immersed upright current transformer |
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