CN103107011B - For the Electric Field Distribution pressure-equalizing device of voltage transformer - Google Patents
For the Electric Field Distribution pressure-equalizing device of voltage transformer Download PDFInfo
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- CN103107011B CN103107011B CN201110362864.4A CN201110362864A CN103107011B CN 103107011 B CN103107011 B CN 103107011B CN 201110362864 A CN201110362864 A CN 201110362864A CN 103107011 B CN103107011 B CN 103107011B
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- barricade
- electric field
- voltage transformer
- field distribution
- line bag
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- 230000005684 electric field Effects 0.000 title claims abstract description 53
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 230000002787 reinforcement Effects 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 3
- 238000000748 compression moulding Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 description 9
- 238000009413 insulation Methods 0.000 description 6
- 208000035224 Ring chromosome 12 syndrome Diseases 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- WBLJAACUUGHPMU-UHFFFAOYSA-N copper platinum Chemical compound [Cu].[Pt] WBLJAACUUGHPMU-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention provides a kind of Electric Field Distribution pressure-equalizing device for voltage transformer, described Electric Field Distribution pressure-equalizing device comprises: shading ring device and barricade device; Wherein: described shading ring device comprises: the line bag shielding secondary ring of the line bag of arc shielding main ring and arc, one end of described line bag shielding main ring combines with the one end shielding secondary ring with line bag; Described barricade device comprises: return yoke barricade unshakable in one's determination and the main yoke barricade of iron core; Described barricade device is connected with the single-point grounding unshakable in one's determination of voltage transformer; A part for the iron core of voltage transformer is wrapped by high-voltage line Bao Suohuan, the skin of described high-voltage line bag wrap up by described shading ring device.
Description
Technical field
The invention belongs to voltage transformer technical field, particularly relate to a kind of Electric Field Distribution pressure-equalizing device for voltage transformer.
Background technology
Current electric pressure is 500kV gas-filled type SF
6the standard potential transformer of insulation adopts R type around singlecore formula usually, and the secondary line of multiple different voltage change ratio packs tightly the stem stem pasting iron core and holds, and high pressure winding adopts single line tower winding to be paperwrapped in the outside of secondary line bag.Because the number of turn of a high pressure winding is many, be divided into multiple layer, Electric Field Distribution arrangement is complicated, if added electric field does not all press measure, the electric field strength of its inside is severe non-uniform electric field, cannot effectively utilize SF
6gas isolated performance (SF
6the insulation property of gas are relevant to the uniformity of electric field, and electric field is more uneven, and its puncture voltage is lower, and insulation property are poorer), be unfavorable for the reduction of instrument transformer volume.
In order to reduce the uneven of instrument transformer electric field intensity inside high, standard potential transformer or voltage of power instrument transformer generally all adopt the mode of electrostatic shielding to shield the tip of its inside with the utilance of uniform electric field raising dielectric.Used electrostatic shielding has that high pressure shields, secondary screen and earthing several, adopt copper platinum to wrap online or iron core column carry out the tip that holds with shielding conductor bag or iron core.It is uneven that this way effectively can reduce the electric field caused because of tip, but electrostatic shielding self with tip be the uneven factor of electric field also.And it is fixing insecure, can not be used for the environment for use of vehicle-mountedization.
Summary of the invention
An object of the present invention is, provide a kind of Electric Field Distribution pressure-equalizing device for voltage transformer, this device comprises:
Described Electric Field Distribution pressure-equalizing device comprises: shading ring device and barricade device;
Wherein: described shading ring device comprises: the line bag shielding secondary ring of the line bag of arc shielding main ring and arc, one end of described line bag shielding main ring combines with the one end shielding secondary ring with line bag;
Described barricade device comprises: return yoke barricade unshakable in one's determination and the main yoke barricade of iron core; Described barricade device is connected with the single-point grounding unshakable in one's determination of voltage transformer;
A part for the iron core of voltage transformer is wrapped by high-voltage line Bao Suohuan, the skin of described high-voltage line bag wrap up by described shading ring device.
The described line bag shielding main ring other end is not connected with the other end that line bag shields secondary ring; And the described line bag shielding main ring other end and and line bag shield secondary ring the other end between gap location be wiring opening.
Described Electric Field Distribution pressure-equalizing device comprises: shielding self-locking device, shields the main ring other end and shield the other end of secondary ring with line bag for the line bag described in snap close.
Described wiring opening has terminals guide post.
Described terminals guide post is provided with terminal stud.
Described return yoke barricade unshakable in one's determination and the main yoke barricade of iron core are by the compression molding of hard aluminium sheet.
The inner side of described return yoke barricade unshakable in one's determination and the main yoke barricade of iron core has reinforcement.
Described Electric Field Distribution pressure-equalizing device also comprises: barricade fixture, is fixed on the iron core of voltage transformer.
Described Electric Field Distribution pressure-equalizing device also comprises: barricade fixture, is fixed on the iron core of voltage transformer.
Beneficial effect of the present invention is, technical scheme provided by the invention adopts shading ring device, be the equal laminated structure of a kind of uniform electric field, can be conducive to improving the high pressure of super gas-filled type high voltage standard voltage transformer and secondary and ground, each winding layers of high pressure winding, high pressure winding to the Electric Field Distribution of the parts such as iron core; Adopt band reinforcement formula moulded section and bayonet type fixed structure, its intensity can meet the requirement of vehicle-mounted vibration environment.
Wherein, adopt the grading ring of aluminum shell type, maskable goes offline bag, tip unshakable in one's determination, and the distribution of the effective non-uniform electric field of improvement system.
Use the shaping aluminum hull grading ring of stereoscopic arrangement formula, the shell of grading ring is round and smooth without any tip, solves the factor that the electric field self brought of electrostatic shielding is uneven.
Grading ring fixing will be put and adopt self-locking structure, can be firm be installed on line bag and iron core, to adapt to the vibration environment of vehicle.
The self-locking fixed mechanism of grading ring, is shielded from the inside of grading ring, exposes in high field without any tip, and the electric field of local can not be caused uneven.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the Electric Field Distribution pressure-equalizing device for voltage transformer that Fig. 1 provides for the embodiment of the present invention.
Another structural representation of the Electric Field Distribution pressure-equalizing device for voltage transformer that Fig. 2 provides for the embodiment of the present invention.
The another structural representation of the Electric Field Distribution pressure-equalizing device for voltage transformer that Fig. 3 provides for the embodiment of the present invention.
The another structural representation of the Electric Field Distribution pressure-equalizing device for voltage transformer that Fig. 4 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Electric Field Distribution pressure-equalizing device for voltage transformer provided by the present invention, can as of a standard potential transformer part.The structural representation of the Electric Field Distribution pressure-equalizing device for voltage transformer that Fig. 1, Fig. 2, Fig. 3 to Fig. 4 provide for the embodiment of the present invention.As shown in the figure, Electric Field Distribution pressure-equalizing device comprises: shading ring device and barricade device.Wherein: described shading ring device and standard potential transformer high-pressure side are connected, be fixed on the outside of standard potential transformer high-voltage line bag 3.Described shading ring device comprises: the line bag shielding main ring 8 of arc and the line bag shielding secondary ring 12 of arc are non-enclosed combination pressure-equalizing device.In specific implementation, one end of described line bag shielding main ring combines with the one end shielding secondary ring with line bag.
Described barricade device is spliced and combined by return yoke barricade 1 unshakable in one's determination and iron core main yoke barricade 2 two parts and forms.Described barricade device is connected with iron core 7 single-point grounding of voltage transformer.Return yoke barricade 1 unshakable in one's determination and the main yoke barricade 2 of iron core are by the compression molding of hard aluminium sheet.The inner side of return yoke barricade 1 unshakable in one's determination and the main yoke barricade 2 of iron core has reinforcement.
So, then define following framework: a part for the iron core 7 of voltage transformer by high-voltage line bag 3 ring bags, the skin of described high-voltage line bag 3 wrap up by described shading ring device.
Described line bag shielding main ring 8 other end and and line bag shield secondary ring 12 the other end between gap location be wiring opening 4.Also be provided with shielding self-locking device 11 at wiring opening 4 place, shield the main ring other end for the line bag described in snap close and shield the other end of secondary ring with line bag.Shielding self-locking device 11 adopts high strength to fix Luo bar 13, insulation spacer 14 and fastening spring 15 etc. to carry out fastening, to make line bag shading ring 8 and shielding complementary ring 12 on the high-voltage line bag 3 locking in standard potential transformer.
At wiring opening 4, place is equipped with terminal stud guide post 10.Band shield terminal head 9 is installed on terminal stud guide post 10 and is equiped with spring bottom it, to establish the whole height of band shield terminal head 9 and the casing joints close-coupled of standard potential transformer adaptively.
Particularly, line bag shading ring 8 band shield terminal head 9 towards directly over after use line bag shielding self-locking device 11 to be fixed.Thus the high-voltage line bag of standard potential transformer is shielded from completely be fixed in shading ring group described outside it, to reach the curvature that expands high-field electrode and the object of even high-pressure side electric field.
The barrier shield fixture 5 of fine-tuning position is fixed on unshakable in one's determination 7, so that the return yoke plate of iron core and main yoke are shielded version in the rear side of grading ring.The Electric Field Distribution pressure-equalizing device of this voltage transformer also can comprise bearing 6, for supporting above-mentioned each parts.High pressure is all pressed and to be parallel to each other between shading ring and each curved surface of barricade unshakable in one's determination and to be provided with the coaxial rounding of deep camber in critical part, to shield corner angle on high and low pressure electrode, point discharge that burr causes electric-field intensity distribution between balanced high-low pressure, thus improve insulating gas SF
6gas insulation characterisitic thus insulation distance needed for reducing reduce equipment volume weight realize vehicle-mountedization to reach.
Beneficial effect of the present invention is, technical scheme provided by the invention adopts shading ring device, be the equal laminated structure of a kind of uniform electric field, can be conducive to improving the high pressure of super gas-filled type high voltage standard voltage transformer and secondary and ground, each winding layers of high pressure winding, high pressure winding to the Electric Field Distribution of the parts such as iron core; Adopt band reinforcement formula moulded section and bayonet type fixed structure, its intensity can meet the requirement of vehicle-mounted vibration environment.
Wherein, adopt the grading ring of aluminum shell type, maskable goes offline bag, tip unshakable in one's determination, and the distribution of the effective non-uniform electric field of improvement system.
Use the shaping aluminum hull grading ring of stereoscopic arrangement formula, the shell of grading ring is round and smooth without any tip, solves the factor that the electric field self brought of electrostatic shielding is uneven.
Grading ring fixing will be put and adopt self-locking structure, can be firm be installed on line bag and iron core, to adapt to the vibration environment of vehicle.
The self-locking fixed mechanism of grading ring, is shielded from the inside of grading ring, exposes in high field without any tip, and the electric field of local can not be caused uneven.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the components and parts in accompanying drawing might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the unit in the device in embodiment can carry out being distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Apply specific embodiment in the present invention to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. for an Electric Field Distribution pressure-equalizing device for voltage transformer, it is characterized in that, described Electric Field Distribution pressure-equalizing device comprises: shading ring device and barricade device;
Wherein: described shading ring device comprises: the line bag shielding secondary ring of the line bag of arc shielding main ring and arc, one end of described line bag shielding main ring combines with the one end shielding secondary ring with line bag;
Described barricade device comprises: return yoke barricade unshakable in one's determination and the main yoke barricade of iron core; Described barricade device is connected with the single-point grounding unshakable in one's determination of voltage transformer;
A part for the iron core of voltage transformer is wrapped by high-voltage line Bao Suohuan, the skin of described high-voltage line bag wrap up by described shading ring device;
Described return yoke barricade unshakable in one's determination and described line bag shield between the plane of main ring place and are parallel to each other;
The edge of described return yoke barricade unshakable in one's determination and iron core main yoke barricade is provided with coaxial rounding.
2. as claimed in claim 1 for the Electric Field Distribution pressure-equalizing device of voltage transformer, it is characterized in that, the described line bag shielding main ring other end is not connected with the other end that line bag shields secondary ring; And the described line bag shielding main ring other end and and line bag shield secondary ring the other end between gap location be wiring opening.
3. as claimed in claim 1 for the Electric Field Distribution pressure-equalizing device of voltage transformer, it is characterized in that, described Electric Field Distribution pressure-equalizing device comprises: shielding self-locking device, shields the main ring other end and shield the other end of secondary ring with line bag for the line bag described in snap close.
4., as claimed in claim 2 for the Electric Field Distribution pressure-equalizing device of voltage transformer, it is characterized in that, described wiring opening has terminals guide post.
5., as claimed in claim 4 for the Electric Field Distribution pressure-equalizing device of voltage transformer, it is characterized in that, described terminals guide post is provided with terminal stud.
6., as claimed in claim 1 for the Electric Field Distribution pressure-equalizing device of voltage transformer, it is characterized in that, described return yoke barricade unshakable in one's determination and the main yoke barricade of iron core are by the compression molding of hard aluminium sheet.
7., as claimed in claim 1 for the Electric Field Distribution pressure-equalizing device of voltage transformer, it is characterized in that, the inner side of described return yoke barricade unshakable in one's determination and the main yoke barricade of iron core has reinforcement.
8., as claimed in claim 1 for the Electric Field Distribution pressure-equalizing device of voltage transformer, it is characterized in that, described Electric Field Distribution pressure-equalizing device also comprises: barricade fixture, is fixed on the iron core of voltage transformer.
9., as claimed in claim 1 for the Electric Field Distribution pressure-equalizing device of voltage transformer, it is characterized in that, described Electric Field Distribution pressure-equalizing device also comprises: barricade fixture, is fixed on the iron core of voltage transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362864.4A CN103107011B (en) | 2011-11-15 | 2011-11-15 | For the Electric Field Distribution pressure-equalizing device of voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362864.4A CN103107011B (en) | 2011-11-15 | 2011-11-15 | For the Electric Field Distribution pressure-equalizing device of voltage transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103107011A CN103107011A (en) | 2013-05-15 |
| CN103107011B true CN103107011B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110362864.4A Active CN103107011B (en) | 2011-11-15 | 2011-11-15 | For the Electric Field Distribution pressure-equalizing device of voltage transformer |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569898A (en) * | 2015-01-04 | 2015-04-29 | 国家电网公司 | Fixing and voltage sharing device for vehicle-mounted standard voltage transformer used for verifying transformer of 500 kV |
| CN104851573A (en) * | 2015-05-11 | 2015-08-19 | 国家电网公司 | Vehicle-mounted transformer coil fixing and pressure equalizing device for 500kV mutual inductor calibration |
| CN110444377B (en) * | 2019-09-09 | 2024-04-23 | 大连北方互感器集团有限公司 | Primary coil high-voltage shielding device of voltage transformer and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344539A (en) * | 2008-08-22 | 2009-01-14 | 国网武汉高压研究院 | 1000kV electromagnetic accurate voltage mutual inductor for magnitude tracing |
| CN201302916Y (en) * | 2008-12-30 | 2009-09-02 | 山东泰开互感器有限公司 | 765kv standard voltage transformer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58122422U (en) * | 1982-02-12 | 1983-08-20 | 日新電機株式会社 | Multi-stage wire ring for high voltage |
| JPS61135107A (en) * | 1984-12-06 | 1986-06-23 | Toshiba Corp | Gas insulated transformer for instrument |
| JPS61137309A (en) * | 1984-12-08 | 1986-06-25 | Nissin Electric Co Ltd | Gas insulated potential transformer |
| JP2736686B2 (en) * | 1989-07-28 | 1998-04-02 | 東光電気株式会社 | Mounting method and mounting structure of high voltage shield of transformer |
-
2011
- 2011-11-15 CN CN201110362864.4A patent/CN103107011B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344539A (en) * | 2008-08-22 | 2009-01-14 | 国网武汉高压研究院 | 1000kV electromagnetic accurate voltage mutual inductor for magnitude tracing |
| CN201302916Y (en) * | 2008-12-30 | 2009-09-02 | 山东泰开互感器有限公司 | 765kv standard voltage transformer |
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| CN103107011A (en) | 2013-05-15 |
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