CN104091682B - Based on the converter transformer outgoing line device of nano modification non-linear dielectric cardboard - Google Patents
Based on the converter transformer outgoing line device of nano modification non-linear dielectric cardboard Download PDFInfo
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- CN104091682B CN104091682B CN201410366137.9A CN201410366137A CN104091682B CN 104091682 B CN104091682 B CN 104091682B CN 201410366137 A CN201410366137 A CN 201410366137A CN 104091682 B CN104091682 B CN 104091682B
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Abstract
Based on the converter transformer outgoing line device of nano modification non-linear dielectric cardboard, it relates to and belongs to converter transformer field, is specifically related to a kind of outgoing line device.The present invention, in order to solve in existing converter transformer outgoing line device oil-paper combination insulation structure because insulating board conductivity to differ comparatively large with transformer oil, causes the problem that the electric field height in insulating board is concentrated.Based on the converter transformer outgoing line device of nano modification non-linear dielectric cardboard, be made up of guide rod, balance pipe, voltage equalizing ball, fiber core, end ball fiber core and sleeve pipe from inside to outside, one end of sleeve pipe is connected with guide rod, and the material of described fiber core and end ball fiber core is the non-linear dielectric cardboard based on nano modification.The conductivity of the non-linear dielectric cardboard that the present invention adopts is high, reduces dielectric constant, reduces the gap with transformer oil conductivity, dielectric constant, thus make electric field obtain homogenizing, avoid the high concentration of electric field.
Description
Technical field
The invention belongs to converter transformer field, be specifically related to a kind of outgoing line device.
Background technology
Converter transformer is as the core devices of DC transmission system, and its reliability directly affects the safe operation of whole system.Outgoing line device, as the core component of converter transformer, is the weakest link of converter transformer insulation, its insulating structure design with optimize be always needed for the technological difficulties of capturing.
During operation, the paper oil insulation of outgoing line device is except will bearing alternating voltage, operation and lightning impulse overvoltage, and also will bear direct voltage, exchange the effect of superposition direct current and polarity inversion voltage, the Electric Field Distribution of its inside is comparatively complicated.
Under alternating voltage effect, oil and cardboard in Electric Field Distribution and its dielectric constant be inverse ratio, can think that the dielectric constant of material does not change with the change of the extraneous factor such as field intensity, temperature, the dielectric constant of cardboard is twice than the dielectric constant of oil, therefore Electric Field Distribution is more even; And at a dc voltage, Electric Field Distribution in oil and cardboard and its conductivity are inverse ratio, the low 1-3 of a conductivity order of magnitude of insulating board Conductivity Ratio transformer oil, and the impact being subject to the factors such as field intensity, temperature, moisture content, amplitude of variation is comparatively large, is difficult to match with the conductivity of transformer oil.In addition, under DC electric field effect, because oilpaper conductivity difference is larger, therefore the ionic current that flows through in oil is greater than and flows through in cardboard, cause the charge accumulated at oilpaper interface, thus causing under DC voltage component effect, the electric field height in insulating board is concentrated, and paradoxical discharge may be caused time serious even to puncture.
Summary of the invention
The object of the invention is to solve in existing converter transformer outgoing line device oil-paper combination insulation structure because insulating board conductivity differs larger with transformer oil, the problem causing the electric field height in insulating board to be concentrated, provides a kind of converter transformer outgoing line device based on nano modification non-linear dielectric cardboard.
Based on the converter transformer outgoing line device of nano modification non-linear dielectric cardboard, be made up of guide rod, balance pipe, voltage equalizing ball, fiber core, end ball fiber core and sleeve pipe from inside to outside, one end of sleeve pipe is connected with guide rod, and the material of described fiber core, end ball fiber core is the non-linear dielectric cardboard based on nano modification.Described guide rod is hollow copper bar.
The described converter transformer outgoing line device based on nano modification non-linear dielectric cardboard, the described non-linear dielectric cardboard based on nano modification is made up of 1000 parts of thicken pulp and 10 ~ 15 parts of nonlinear functions fillers by mass fraction, and wherein nonlinear functions filler forms by the nano zine oxide of mass fraction by the nanometer silicon carbide of 3 ~ 6 parts, the nano imvite of 1 ~ 8 part, the carbon nano-tube of 0.5 ~ 1.5 part, the carbon fiber of 0.5 ~ 1.5 part and 0.5 ~ 1 part.
Described thicken pulp follows these steps to preparation: by cardboard by delivering to paste mill grinding after pulper size degradation, then utilize fluffer to carry out discongesting process, then the concentration discongesting the rear paper pulp of process is concentrated into 4.3% ~ 4.8%, obtains thicken pulp.
The particle diameter of described nanometer silicon carbide is 10nm ~ 100nm, carbon nano-tube is diameter 5nm ~ 80nm, the Single Walled Carbon Nanotube of pipe range 1 μm ~ 15 μm, double-walled carbon nano-tube or multi-walled carbon nano-tubes, the particle diameter of imvite is 200 ~ 400 orders, the particle diameter of nano zine oxide is 10 ~ 100nm, the diameter of carbon fiber is 3 ~ 7 μm, and length is 600 ~ 800 μm.
Preparation method based on the non-linear dielectric cardboard of nano modification is as follows: one, by cardboard by delivering to paste mill grinding after pulper size degradation, then fluffer is utilized to carry out discongesting process, again the concentration discongesting the paper pulp after process is concentrated into 4.3% ~ 4.8%, obtains thicken pulp;
Two, nonlinear functions filler is added by the ratio of quality and the number of copies of thicken pulp and the nonlinear functions filler thicken pulp that to be 1000 ︰ (10 ~ 15) obtain to step one, the shaping l Water Paper of l Water Paper base former is put into after mixing hollander mixes, l Water Paper base after shaping utilizes vacuum to dewater, l Water Paper base is taken out when moisture reaches 40% ~ 50%, l Water Paper base is sent into hot pressing in hot press and is made the moisture cardboard that water content is 15% ~ 20%, finally carries out to moisture cardboard the non-linear dielectric cardboard that vacuumize obtains based on nano modification;
Nonlinear functions filler wherein described in step 2 forms by the nano zine oxide of mass fraction by the nanometer silicon carbide of 3 ~ 6 parts, the nano imvite of 1 ~ 8 part, the carbon nano-tube of 0.5 ~ 1.5 part, the carbon fiber of 0.5 ~ 1.5 part and 0.5 ~ 1 part.
Step one cardboard is by delivering to paste mill grinding after pulper size degradation, and defibrination reaches 30-40 ° of SR to the beating degree of slurry.
Step one utilizes fluffer to carry out discongesting process, and wherein discongesting process is discongest 15 ~ 25min with the rotating speed of 2900 ± 100r/min.
Hot pressing in hot press sent into by step 2 l Water Paper base, and the condition of wherein hot pressing is with the pressure of 15 ~ 20MPa compacting 10 ~ 20min;
It is carry out vacuumize with the temperature of 90 DEG C ~ 110 DEG C in the vacuum drying chamber that vacuum degree is 0.01MPa that step 2 carries out vacuum drying process to moisture cardboard.
The particle diameter of nanometer silicon carbide is 10nm ~ 100nm, carbon nano-tube is diameter 5nm ~ 80nm, the Single Walled Carbon Nanotube of pipe range 1 μm ~ 15 μm, double-walled carbon nano-tube or multi-walled carbon nano-tubes, the particle diameter of imvite is 200 ~ 400 orders, the particle diameter of nano zine oxide is 10 ~ 100nm, the diameter of carbon fiber is 3 ~ 7 μm, and length is 600 ~ 800 μm.
Voltage equalizing ball 2 in the present invention is for homogenizing sleeve pipe 6 and the Electric Field Distribution based on the converter transformer outgoing line device connecting portion of nano modification non-linear dielectric cardboard, its outside being coated to starches by couch board the end ball fiber core 1 be made into, and end ball fiber core 1 plays the insulating effect between voltage equalizing ball 2 and oil tank of transformer 8; Balance pipe 5 is for the distribution of homogenizing guide rod 3 external electrical field, and the fiber core 4 that balance pipe 5 outside is made up of board pulp is coated, plays the insulating effect between balance pipe 5 and oil tank of transformer 8.
The conductivity of the non-linear dielectric cardboard that the present invention adopts is high, reduces dielectric constant, reduces the gap with transformer oil conductivity, dielectric constant, thus make electric field obtain homogenizing, avoid the high concentration of electric field.
Accompanying drawing explanation
Fig. 1 is the structural representation of the converter transformer outgoing line device that the present invention is based on nano modification non-linear dielectric cardboard;
Fig. 2 is the schematic diagram after assembling based on the converter transformer outgoing line device of nano modification non-linear dielectric cardboard and transformer in embodiment one.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the combination in any between each embodiment.
Embodiment one: based on the converter transformer outgoing line device of nano modification non-linear dielectric cardboard in present embodiment, be made up of guide rod 3, balance pipe 5, voltage equalizing ball 2, fiber core 4, end ball fiber core 1 and sleeve pipe 6 from inside to outside, one end of sleeve pipe 6 is connected with guide rod 3, it is characterized in that: described fiber core 4 and the material of end ball fiber core 1 are the non-linear dielectric cardboard based on nano modification, and fiber core 4, end ball fiber core 1 connect.
Based on the converter transformer outgoing line device of nano modification non-linear dielectric cardboard and the assembling of transformer as follows:
It is inner that converter transformer outgoing line device based on nano modification non-linear dielectric cardboard is integrally provided in oil tank of transformer 8, oil tank of transformer 8 inside is full of transformer oil 9, sleeve pipe 6 and high pressure winding 7 are electrically connected, and raise the outside that seat 10 is positioned at the first half of converter transformer outgoing line device.
Embodiment two: present embodiment and embodiment one are hollow copper bars unlike described guide rod 3.Other is identical with embodiment one.
Embodiment three: one of present embodiment and embodiment one or two are be made up of 1000 parts of thicken pulp and 10 ~ 15 parts of nonlinear functions fillers by mass fraction unlike the described non-linear dielectric cardboard based on nano modification, wherein nonlinear functions filler forms by the nano zine oxide of mass fraction by the nanometer silicon carbide of 3 ~ 6 parts, the nano imvite of 1 ~ 8 part, the carbon nano-tube of 0.5 ~ 1.5 part, the carbon fiber of 0.5 ~ 1.5 part and 0.5 ~ 1 part.
Embodiment four: present embodiment and embodiment three follow these steps to prepare unlike described thicken pulp: by cardboard by delivering to paste mill grinding after pulper size degradation, then fluffer is utilized to carry out discongesting process, again the concentration discongesting the rear paper pulp of process is concentrated into 4.3% ~ 4.8%, obtains thicken pulp.Other is identical with embodiment three.
Embodiment five: present embodiment and embodiment three are 10nm ~ 100nm unlike the particle diameter of described nanometer silicon carbide, carbon nano-tube is diameter 5nm ~ 80nm, the Single Walled Carbon Nanotube of pipe range 1 μm ~ 15 μm, double-walled carbon nano-tube or multi-walled carbon nano-tubes, the particle diameter of imvite is 200 ~ 400 orders, the particle diameter of nano zine oxide is 10 ~ 100nm, the diameter of carbon fiber is 3 ~ 7 μm, and length is 600 ~ 800 μm.Other is identical with embodiment three.
Embodiment six: one of present embodiment and embodiment one to five unlike: the preparation method based on the non-linear dielectric cardboard of nano modification is as follows: one, by cardboard by delivering to paste mill grinding after pulper size degradation, then fluffer is utilized to carry out discongesting process, again the concentration discongesting the paper pulp after process is concentrated into 4.3% ~ 4.8%, obtains thicken pulp;
Two, nonlinear functions filler is added by the ratio of quality and the number of copies of thicken pulp and the nonlinear functions filler thicken pulp that to be 1000 ︰ (10 ~ 15) obtain to step one, the shaping l Water Paper of l Water Paper base former is put into after mixing hollander mixes, l Water Paper base after shaping utilizes vacuum to dewater, l Water Paper base is taken out when moisture reaches 40% ~ 50%, l Water Paper base is sent into hot pressing in hot press and is made the moisture cardboard that water content is 15% ~ 20%, finally carries out to moisture cardboard the non-linear dielectric cardboard that vacuumize obtains based on nano modification;
Nonlinear functions filler wherein described in step 2 forms by the nano zine oxide of mass fraction by the nanometer silicon carbide of 3 ~ 6 parts, the nano imvite of 1 ~ 8 part, the carbon nano-tube of 0.5 ~ 1.5 part, the carbon fiber of 0.5 ~ 1.5 part and 0.5 ~ 1 part.
Embodiment seven: present embodiment and embodiment six are unlike step one cardboard by delivering to paste mill grinding after pulper size degradation, and defibrination reaches 30-40 ° of SR to the beating degree of slurry.Other is identical with embodiment six.
Embodiment eight: present embodiment and embodiment six or seven utilize fluffer to carry out discongesting process unlike step one, wherein discongesting process is discongest 15 ~ 25min with the rotating speed of 2900 ± 100r/min.Other is identical with embodiment six or seven.
Embodiment nine: one of present embodiment and embodiment six to eight send into hot pressing in hot press unlike step 2 l Water Paper base, the condition of wherein hot pressing is with the pressure of 15 ~ 20MPa compacting 10 ~ 20min; It is carry out vacuumize with the temperature of 90 DEG C ~ 110 DEG C in the vacuum drying chamber that vacuum degree is 0.01MPa that step 2 carries out vacuum drying process to moisture cardboard.Other is identical with one of embodiment six to eight.
Embodiment ten: one of present embodiment and embodiment six to nine are 10nm ~ 100nm unlike the particle diameter of nanometer silicon carbide, carbon nano-tube is diameter 5nm ~ 80nm, the Single Walled Carbon Nanotube of pipe range 1 μm ~ 15 μm, double-walled carbon nano-tube or multi-walled carbon nano-tubes, the particle diameter of imvite is 200 ~ 400 orders, the particle diameter of nano zine oxide is 10 ~ 100nm, the diameter of carbon fiber is 3 ~ 7 μm, and length is 600 ~ 800 μm.Other is identical with one of embodiment six to nine.
Embodiment one: the present embodiment follows these steps to implement based on the preparation method of the non-linear dielectric cardboard of nano modification:
One, by cardboard by delivering to paste mill grinding after pulper size degradation, make the beating degree of slurry reach 30 ° of SR, then utilize fluffer to carry out discongesting process, then the concentration discongesting the paper pulp after process is concentrated into 4.5%, obtain thicken pulp;
Two, nonlinear functions filler is added by the ratio of quality and the number of copies of thicken pulp and the nonlinear functions filler thicken pulp that to be 1000 ︰ 10 obtain to step one, the shaping l Water Paper of l Water Paper base former is put into after mixing hollander mixes, l Water Paper base after shaping utilizes vacuum to dewater, l Water Paper base is taken out when moisture reaches 45%, l Water Paper base is sent into hot pressing in hot press and is made the moisture cardboard that water content is 20%, finally carries out to moisture cardboard the non-linear dielectric cardboard that vacuumize obtains based on nano modification;
Nonlinear functions filler wherein described in step 2 forms by the nano zine oxide of mass fraction by the nanometer silicon carbide of 3 parts, the nano imvite of 6 parts, the carbon nano-tube of 1 part, the carbon fiber of 0.5 part and 0.5 part.
In the present embodiment, the particle diameter of nanometer silicon carbide is 40nm ~ 60nm, carbon nano-tube is the double-walled carbon nano-tube of diameter 10nm ~ 20nm, pipe range 5 μm ~ 15 μm, the particle diameter of imvite is 200 ~ 400 orders, the particle diameter of nano zine oxide is 40 ~ 60nm, the diameter of carbon fiber is 3 ~ 7 μm, and length is 600 ~ 800 μm.
The conductivity of conductance non-linear dielectric cardboard in below 15kV/mm electric field that the present embodiment prepares is not less than 2.3*10
-14s/m, maximum non linear coefficient is 3.2, and dielectric constant is 2.7, and AC breakdown strength is 70kV/mm, and DC breakdown field intensity is 223kV/mm.The dielectric constant of this non-linear dielectric cardboard is twice than the dielectric constant of oil, and dielectric constant does not change with the change of the extraneous factor such as field intensity, temperature, and therefore Electric Field Distribution is relatively uniform.
Embodiment two: the present embodiment and embodiment one form by the nano zine oxide of mass fraction by the nanometer silicon carbide of 5 parts, the nano imvite of 2 parts, the carbon nano-tube of 1 part, the carbon fiber of 1 part and 1 part unlike the nonlinear functions filler described in step 2.
The conductivity of conductance non-linear dielectric cardboard in below 15kV/mm electric field that the present embodiment prepares is not less than 1.2*10
-13s/m, maximum non linear coefficient is 6.1, and dielectric constant is 3.2, and AC breakdown strength is 53kV/mm, and DC breakdown field intensity is 202kV/mm.
Embodiment three: the present embodiment follows these steps to implement based on the preparation method of the non-linear dielectric cardboard of nano modification:
One, by cardboard by delivering to paste mill grinding after pulper size degradation, make the beating degree of slurry reach 40 ° of SR, then utilize fluffer to carry out discongesting process, then the concentration discongesting the paper pulp after process is concentrated into 4.5%, obtain thicken pulp;
Two, nonlinear functions filler is added by the ratio of quality and the number of copies of thicken pulp and the nonlinear functions filler thicken pulp that to be 1000 ︰ 12 obtain to step one, the shaping l Water Paper of l Water Paper base former is put into after mixing hollander mixes, l Water Paper base after shaping utilizes vacuum to dewater, l Water Paper base is taken out when moisture reaches 50%, l Water Paper base is sent into hot pressing in hot press and is made the moisture cardboard that water content is 20%, finally carries out to moisture cardboard the non-linear dielectric cardboard that vacuumize obtains based on nano modification;
Nonlinear functions filler wherein described in step 2 forms by the nano zine oxide of mass fraction by the nanometer silicon carbide of 4 parts, the nano imvite of 4 parts, the carbon nano-tube of 1.5 parts, the carbon fiber of 1.5 parts and 0.5 part.
The conductivity of conductance non-linear dielectric cardboard in below 15kV/mm electric field that the present embodiment prepares is not less than 7.1*10
-14s/m, maximum non linear coefficient is 4.4, and dielectric constant is 2.9, and AC breakdown strength is 61kV/mm, and DC breakdown field intensity is 216kV/mm.
Claims (6)
1. based on the converter transformer outgoing line device of nano modification non-linear dielectric cardboard, be made up of guide rod (3), balance pipe (5), voltage equalizing ball (2), fiber core (4), end ball fiber core (1) and sleeve pipe (6) from inside to outside, one end of sleeve pipe (6) is connected with guide rod (3), it is characterized in that: described fiber core (4) and the material of end ball fiber core (1) are the non-linear dielectric cardboard based on nano modification;
Preparation method based on the non-linear dielectric cardboard of nano modification is as follows: one, by cardboard by delivering to paste mill grinding after pulper size degradation, then fluffer is utilized to carry out discongesting process, again the concentration discongesting the paper pulp after process is concentrated into 4.3% ~ 4.8%, obtains thicken pulp;
Two, nonlinear functions filler is added by the ratio of quality and the number of copies of thicken pulp and the nonlinear functions filler thicken pulp that to be 1000 ︰ (10 ~ 15) obtain to step one, the shaping l Water Paper of l Water Paper base former is put into after mixing hollander mixes, l Water Paper base after shaping utilizes vacuum to dewater, l Water Paper base is taken out when moisture reaches 40% ~ 50%, l Water Paper base is sent into hot pressing in hot press and is made the moisture cardboard that water content is 15% ~ 20%, finally carries out to moisture cardboard the non-linear dielectric cardboard that vacuumize obtains based on nano modification;
Nonlinear functions filler wherein described in step 2 forms by the nano zine oxide of mass fraction by the nanometer silicon carbide of 3 ~ 6 parts, the nano imvite of 1 ~ 8 part, the carbon nano-tube of 0.5 ~ 1.5 part, the carbon fiber of 0.5 ~ 1.5 part and 0.5 ~ 1 part.
2. according to claim 1 based on the converter transformer outgoing line device of nano modification non-linear dielectric cardboard, it is characterized in that: described guide rod (3) is hollow copper bar.
3. according to claim 1 based on the converter transformer outgoing line device of nano modification non-linear dielectric cardboard, it is characterized in that: the particle diameter of described nanometer silicon carbide is 10nm ~ 100nm, carbon nano-tube is diameter 5nm ~ 80nm, the Single Walled Carbon Nanotube of pipe range 1 μm ~ 15 μm, double-walled carbon nano-tube or multi-walled carbon nano-tubes, the particle diameter of nano imvite is 200 ~ 400 orders, the particle diameter of nano zine oxide is 10 ~ 100nm, the diameter of carbon fiber is 3 ~ 7 μm, and length is 600 ~ 800 μm.
4. according to claim 1 based on the converter transformer outgoing line device of nano modification non-linear dielectric cardboard, it is characterized in that: step one cardboard is by delivering to paste mill grinding after pulper size degradation, and defibrination reaches 30-40 ° of SR to the beating degree of slurry.
5. according to claim 1 based on the converter transformer outgoing line device of nano modification non-linear dielectric cardboard, it is characterized in that: step one utilizes fluffer to carry out discongesting process, wherein discongesting process is discongest 15 ~ 25min with the rotating speed of 2900 ± 100r/min.
6. according to claim 1 based on the converter transformer outgoing line device of nano modification non-linear dielectric cardboard, it is characterized in that: hot pressing in hot press sent into by step 2 l Water Paper base, the condition of wherein hot pressing is with the pressure of 15 ~ 20MPa compacting 10 ~ 20min; It is carry out vacuumize with the temperature of 90 DEG C ~ 110 DEG C in the vacuum drying chamber that vacuum degree is 0.01MPa that step 2 carries out vacuum drying process to moisture cardboard.
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| CN201410366137.9A CN104091682B (en) | 2014-07-29 | 2014-07-29 | Based on the converter transformer outgoing line device of nano modification non-linear dielectric cardboard |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106381745A (en) * | 2016-11-14 | 2017-02-08 | 哈尔滨理工大学 | Preparation method of nano modified insulating paperboard for converter transformer |
| CN106381750A (en) * | 2016-11-14 | 2017-02-08 | 哈尔滨理工大学 | Production method of high-breakdown-strength insulation paperboard based on nano modification and paperboard cylinder thereof |
| CN114086418A (en) * | 2021-11-30 | 2022-02-25 | 国网黑龙江省电力有限公司电力科学研究院 | Preparation method and application of surface modification-based nano particle dispersion and modification insulating paperboard |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640114A (en) * | 2009-07-06 | 2010-02-03 | 保定天威保变电气股份有限公司 | Extra-high voltage transformer lead shielding device |
| CN101694807A (en) * | 2009-08-27 | 2010-04-14 | 中国西电电气股份有限公司 | High voltage outgoing line device of extra-high voltage transformer |
| CN102576187A (en) * | 2009-10-14 | 2012-07-11 | 希乐克公司 | Marking paper products |
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| KR100628031B1 (en) * | 2005-07-27 | 2006-09-26 | (주) 나노텍 | Thermally improve conductive carbon sheet base on mixed carbon material of expanded graphite powder and carbon nano tube powder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640114A (en) * | 2009-07-06 | 2010-02-03 | 保定天威保变电气股份有限公司 | Extra-high voltage transformer lead shielding device |
| CN101694807A (en) * | 2009-08-27 | 2010-04-14 | 中国西电电气股份有限公司 | High voltage outgoing line device of extra-high voltage transformer |
| CN102576187A (en) * | 2009-10-14 | 2012-07-11 | 希乐克公司 | Marking paper products |
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