CN103107011A - Electric field distribution pressure-equalizing device for voltage transformer - Google Patents
Electric field distribution pressure-equalizing device for voltage transformer Download PDFInfo
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- CN103107011A CN103107011A CN2011103628644A CN201110362864A CN103107011A CN 103107011 A CN103107011 A CN 103107011A CN 2011103628644 A CN2011103628644 A CN 2011103628644A CN 201110362864 A CN201110362864 A CN 201110362864A CN 103107011 A CN103107011 A CN 103107011A
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- electric field
- field distribution
- voltage transformer
- barricade
- distribution pressure
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Abstract
The invention provides an electric field distribution pressure-equalizing device for a voltage transformer. The electric field distribution pressure-equalizing device comprises a shielding ring device and a shielding plate device, wherein the shielding ring comprises an arc-shaped wire-coil main shielding ring and an arc-shaped wire-coil shielding auxiliary shielding ring. One end of the solenoid main shielding ring is combined with one end of the solenoid auxiliary shielding ring. The shielding plate device comprises an iron core side-yoking shielding plate and an iron core main-yoking shielding plate. The shielding device is connected with the iron core in a single-point ground joint mode. A part of the iron core of the voltage transformer is wrapped by a high-voltage solenoid. The outer layer of the high-voltage solenoid is wrapped by the shielding ring device.
Description
Technical field
The invention belongs to the voltage transformer technical field, relate in particular to a kind of Electric Field Distribution pressure-equalizing device for voltage transformer.
Background technology
Electric pressure is 500kV gas-filled type SF at present
6The standard potential transformer of insulation adopts the R type around the singlecore formula usually, and the secondary line of a plurality of different voltage change ratios packs tightly a stem stem that pastes iron core and holds, and winding of high pressure adopts single line tower winding to be paperwrapped in the outside of secondary line bag.Many due to the number of turn of a winding of high pressure, be divided into a plurality of layers, Electric Field Distribution is arranged complicated, if added electric field is not all pressed measure, its inner electric field strength is severe non-uniform electric field, can't 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 inhomogeneous, and its puncture voltage is lower, and insulation property are poorer), be unfavorable for reducing of instrument transformer volume.
In order to reduce the inhomogeneous of instrument transformer internal electric field intensity, the utilance of dielectric is improved at the tip that standard potential transformer or voltage of power instrument transformer generally all adopt the mode of electrostatic shielding to shield its inside with uniform electric field.Electrostatic shielding used has high pressure screen, secondary screen and earthing several, adopts on the online bag of copper platinum or iron core column to hold with shielding conductor bag or tip unshakable in one's determination.It is inhomogeneous that this way can effectively reduce the electric field that causes because of the tip, but electrostatic shielding self with the tip be the inhomogeneous 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
One of purpose of the present invention is, a kind of Electric Field Distribution pressure-equalizing device for voltage transformer is provided, and 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, an end of described line bag shielding main ring with and the line bag end that shields secondary ring combine;
Described barricade device comprises: return yoke barricade unshakable in one's determination and main yoke barricade unshakable in one's determination; Described barricade device is connected with the single-point grounding unshakable in one's determination of voltage transformer;
The part of the iron core of voltage transformer is wrapped by high-voltage line Bao Suohuan, and the skin of described high-voltage line bag is wrapped up by described shading ring device.
The described line bag shielding main ring other end is not connected with the other end with line bag shielding secondary ring; And the described line bag shielding main ring other end with and the gap location that shields between the other end of secondary ring of line bag be the wiring opening.
Described Electric Field Distribution pressure-equalizing device comprises: the shielding self-locking device, be used for the described line bag shielding of the snap close main ring other end with and the other end of line bag shielding secondary ring.
Described wiring opening has the terminals guide post.
Be provided with terminal stud on described terminals guide post.
Described return yoke barricade unshakable in one's determination and main yoke barricade unshakable in one's determination are by the compression molding of hard aluminium sheet.
The inboard of described return yoke barricade unshakable in one's determination and main yoke barricade unshakable in one's determination has reinforcement.
Described Electric Field Distribution pressure-equalizing device also comprises: the barricade fixture, be fixed on the iron core of voltage transformer.
Described Electric Field Distribution pressure-equalizing device also comprises: the barricade fixture, be fixed on the iron core of voltage transformer.
Beneficial effect of the present invention is, technical scheme provided by the invention adopts the shading ring device, be the equal laminated structure of a kind of uniform electric field, can be conducive to improve 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 satisfy the requirement of vehicle-mounted vibration environment.
Wherein, adopt the grading ring of aluminum shell type, the maskable tip of bag, iron core that goes offline, and effectively improve the distribution of the non-uniform electric field of system.
Use stereoscopic arrangement formula moulding aluminum hull grading ring, the shell of grading ring is round and smooth without any tip, has solved the inhomogeneous factor of the electric field that self brings of electrostatic shielding.
Fixing the putting of grading ring adopted the 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, can not cause that local electric field is uneven.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of the Electric Field Distribution pressure-equalizing device that is used 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 that is used 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 that is used 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 that is used 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, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Electric Field Distribution pressure-equalizing device for voltage transformer provided by the present invention can be used as a part of standard potential transformer.The structural representation of the Electric Field Distribution pressure-equalizing device that is used 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, the 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 link, and are fixed on the outside of standard potential transformer high-voltage line bag 3.Described shading ring device comprises: the line bag shielding secondary ring 12 of the line bag shielding main ring 8 of arc and arc is non-enclosed combination pressure-equalizing device.On specific implementation, an end of described line bag shielding main ring with and the line bag end that shields secondary ring combine.
Described barricade device is spliced and combined by return yoke barricade 1 unshakable in one's determination and main yoke barricade 2 two parts unshakable in one's determination and forms.Described barricade device is connected with iron core 7 single-point groundings of voltage transformer.Return yoke barricade 1 unshakable in one's determination and main yoke barricade 2 unshakable in one's determination are by the compression molding of hard aluminium sheet.The inboard of return yoke barricade 1 unshakable in one's determination and main yoke barricade 2 unshakable in one's determination has reinforcement.
So, formed following framework: the part of the iron core 7 of voltage transformer is by high-voltage line bag 3 bag that encircles, and the skin of described high-voltage line bag 3 is wrapped up by described shading ring device.
Described line bag shielding main ring 8 other ends with and the gap location that shields between the other end of secondary ring 12 of line bag be wiring opening 4.Also be provided with shielding self-locking device 11 at wiring opening 4 places, be used for the described line bag shielding of the snap close main ring other end with and the other end of line bag shielding secondary ring.Shielding self-locking device 11 adopt high strength fixedly Luo bar 13, insulation spacer 14 and fastening spring 15 etc. carry out fastening so that line bag shading ring 8 and shielding complementary ring 12 lock on the high-voltage line bag 3 of standard potential transformer certainly.
4 places are equipped with terminal stud guide post 10 at the wiring opening.Band shield terminal head 9 is installed on terminal stud guide post 10 and is equiped with spring in its bottom, to establish adaptively the cover pipe connections close-coupled of whole height with shield terminal head 9 and standard potential transformer.
Particularly, the band shield terminal head 9 of line bag shading ring 8 towards directly over after use line bag shielding self-locking device 11 to be fixed.Thereby the high-voltage line bag that makes standard potential transformer is shielded from is fixed in its described shading ring group in outside fully, to reach the purpose of the also even high-pressure side electric field of curvature that enlarges high-field electrode.
The barrier shield fixture 5 of fine-tuning position is fixed on unshakable in one's determination 7, shields version in the rear side of grading ring with return yoke plate and main yoke with iron core.The Electric Field Distribution pressure-equalizing device of this voltage transformer also can comprise bearing 6, is used for supporting above-mentioned each parts.High pressure is all pressed the coaxial rounding that is parallel to each other between shading ring and each curved surface of barricade unshakable in one's determination and is provided with deep camber at critical place, with the corner angle on shielding high and low pressure electrode, point discharge that burr causes and the electric-field intensity distribution between balanced high-low pressure, thereby improve insulating gas SF
6Thereby the edge characteristic of drawing last breath reduce required insulation distance and reduce equipment volume weight and realize vehicle-mountedization to reach.
Beneficial effect of the present invention is, technical scheme provided by the invention adopts the shading ring device, be the equal laminated structure of a kind of uniform electric field, can be conducive to improve 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 satisfy the requirement of vehicle-mounted vibration environment.
Wherein, adopt the grading ring of aluminum shell type, the maskable tip of bag, iron core that goes offline, and effectively improve the distribution of the non-uniform electric field of system.
Use stereoscopic arrangement formula moulding aluminum hull grading ring, the shell of grading ring is round and smooth without any tip, has solved the inhomogeneous factor of the electric field that self brings of electrostatic shielding.
Fixing the putting of grading ring adopted the 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, can not cause that local electric field is 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 be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The invention described above embodiment sequence number does not represent the quality of embodiment just to description.
Used specific embodiment in the present invention principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, 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. an Electric Field Distribution pressure-equalizing device that is used for voltage transformer, 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, an end of described line bag shielding main ring with and the line bag end that shields secondary ring combine;
Described barricade device comprises: return yoke barricade unshakable in one's determination and main yoke barricade unshakable in one's determination; Described barricade device is connected with the single-point grounding unshakable in one's determination of voltage transformer;
The part of the iron core of voltage transformer is wrapped by high-voltage line Bao Suohuan, and the skin of described high-voltage line bag is wrapped up by described shading ring device.
2. the Electric Field Distribution pressure-equalizing device for voltage transformer as claimed in claim 1, is characterized in that, the described line bag shielding main ring other end is not connected with the other end with line bag shielding secondary ring; And the described line bag shielding main ring other end with and the gap location that shields between the other end of secondary ring of line bag be the wiring opening.
3. the Electric Field Distribution pressure-equalizing device for voltage transformer as claimed in claim 1, it is characterized in that, described Electric Field Distribution pressure-equalizing device comprises: the shielding self-locking device, be used for the described line bag shielding of the snap close main ring other end with and the other end of line bag shielding secondary ring.
4. the Electric Field Distribution pressure-equalizing device for voltage transformer as claimed in claim 1, is characterized in that, described wiring opening has the terminals guide post.
5. the Electric Field Distribution pressure-equalizing device for voltage transformer as claimed in claim 1, is characterized in that, is provided with terminal stud on described terminals guide post.
6. the Electric Field Distribution pressure-equalizing device for voltage transformer as claimed in claim 1, is characterized in that, described return yoke barricade unshakable in one's determination and main yoke barricade unshakable in one's determination are by the compression molding of hard aluminium sheet.
7. the Electric Field Distribution pressure-equalizing device for voltage transformer as claimed in claim 1, is characterized in that, the inboard of described return yoke barricade unshakable in one's determination and main yoke barricade unshakable in one's determination has reinforcement.
8. the Electric Field Distribution pressure-equalizing device for voltage transformer as claimed in claim 1, is characterized in that, described Electric Field Distribution pressure-equalizing device also comprises: the barricade fixture, be fixed on the iron core of voltage transformer.
9. the Electric Field Distribution pressure-equalizing device for voltage transformer as claimed in claim 1, is characterized in that, described Electric Field Distribution pressure-equalizing device also comprises: the barricade fixture, be 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 true CN103107011A (en) | 2013-05-15 |
| CN103107011B 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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| CN (1) | CN103107011B (en) |
Cited By (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 |
| CN110444377A (en) * | 2019-09-09 | 2019-11-12 | 大连北方互感器集团有限公司 | A kind of voltage transformer primary coil high-tension shielding apparatus and preparation method thereof |
Citations (6)
| 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 |
| JPH0360107A (en) * | 1989-07-28 | 1991-03-15 | Toko Denki Kk | Method and structure for installing high pressure shield of transformer |
| 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 |
-
2011
- 2011-11-15 CN CN201110362864.4A patent/CN103107011B/en active Active
Patent Citations (6)
| 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 |
| JPH0360107A (en) * | 1989-07-28 | 1991-03-15 | Toko Denki Kk | Method and structure for installing high pressure shield of transformer |
| 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 |
Cited By (4)
| 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 |
| CN110444377A (en) * | 2019-09-09 | 2019-11-12 | 大连北方互感器集团有限公司 | A kind of voltage transformer primary coil high-tension shielding apparatus and preparation method thereof |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN103107011B (en) | 2015-12-02 |
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