CN103730247A - Full-shielding high-voltage isolated-type voltage transformer - Google Patents
Full-shielding high-voltage isolated-type voltage transformer Download PDFInfo
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- CN103730247A CN103730247A CN201310695456.XA CN201310695456A CN103730247A CN 103730247 A CN103730247 A CN 103730247A CN 201310695456 A CN201310695456 A CN 201310695456A CN 103730247 A CN103730247 A CN 103730247A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/24—Voltage transformers
- H01F38/26—Constructions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/288—Shielding
- H01F27/2885—Shielding with shields or electrodes
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Abstract
The invention provides a full-shielding high-voltage isolated-type voltage transformer which comprises a tubular secondary low-voltage shielding electrode (1) coaxially mounted in an annular primary high-voltage shielding electrode (2), and flanges fixing the primary high-voltage shielding electrode (2) and the secondary high-voltage shielding electrode (1) respectively. The flange (12) and the flange (23) which fix the primary high-voltage shielding electrode (2) are parallelly arranged on the outer side of the primary high-voltage shielding electrode (2), axes of the flange (3) and the flange (4) which fix the secondary high-voltage shielding electrode (1) are perpendicularly intersected at the axis of the the secondary high-voltage shielding electrode (1), and both the primary high-voltage shielding electrode (2) and the secondary high-voltage shielding electrode (1) are made by adopting aluminum alloy. Accuracy of a voltage transformer is improved, superimposition of secondary voltage when two single-stage voltage transformers are serially connected can be realized, and a voltage series summation method is promoted to perform quantity transmission on higher voltage levels.
Description
Technical field:
The present invention relates to a kind of instrument transformer, be specifically related to a kind of full-shield high pressure isolating voltage mutual inductor, belong to instrument voltage transformer technical field.
Background technology:
The transmission of quantity value that adopts voltage mutual inductor serial addition to carry out voltage ratio in China's power-frequency voltage magnitude tracing system is traced to the source, the method is directly connected first and second bucking electrode of two voltage transformers in operating process, requirement during each screen potential change, can not exert an influence to the error of voltage transformer in checking procedure; But in fact, due to shielding imperfection, when screen potential changes, leakage current flows through excitation winding, has affected the error of voltage transformer, and along with the rising of electric pressure, it is more obvious that capacitive is leaked the impact bringing.
From the current study, standard set-up more than 220kV electric pressure is difficult to re-use Voltage Series addition and carries out the transmission work of value, therefore for use Voltage Series add normal direction more voltage levels carry out transmission of quantity value, with regard to solving the problem of voltage transformer secondary Voltage Series, reduce first and second winding capacitive simultaneously and leak the impact that measure error is caused.
A kind of full-shield high pressure isolating voltage mutual inductor provided by the invention has been realized two
voltage mutual inductor serial become
tandem standard potential transformer.
Summary of the invention:
The invention provides a kind of full-shield high pressure isolating voltage mutual inductor, its object is: according to the requirement of voltage mutual inductor serial addition circuit, realize the voltage stack of two voltage transformer first and second windings of series connection, reduce capacitive between first and second winding and reveal the impact that measure error is caused, guarantee that first and second winding error characteristics separately in cascade process remain unchanged, voltage mutual inductor serial addition is applied in the power-frequency voltage ratio standard of voltage levels (220KV～1000KV) more.
The technical solution used in the present invention is: a kind of full-shield high pressure isolating voltage mutual inductor, is characterized in that:
Described voltage transformer comprises the tubulose secondary low-voltage bucking electrode (1) being coaxially installed in a high-tension shielding electrode of ring-type (2), the flange of fixing respectively a described high-tension shielding electrode (2) and described secondary low-voltage bucking electrode (1);
Flange (12) be located at a described high-tension shielding electrode (2) outside parallel with flange (23) of a fixing described high-tension shielding electrode (2);
The fixing flange (3) of described secondary low-voltage bucking electrode (1) and the intersect vertical axis of flange (4) are in the axis of described secondary low-voltage bucking electrode (1);
A described high-tension shielding electrode (2) and described secondary low-voltage bucking electrode (1) all adopt aluminium alloy to make.
Preferably, described voltage transformer is installed in the middle of the sealing device being comprised of cylindrical shell (16), flange (19), flange (20), flange (14), disc insulator (15), disc insulator (21) and housing bottom end cover (18).
Preferably, described cylindrical shell (16) two ends are welded with described flange (19) and described flange (20), between described flange (19) and described flange (14), fix the edge of described disc insulator (15), the edge of described flange (20) fixing pot type insulator (21) and described housing bottom end cover (18).
Preferably, disc insulator (15) is coaxially fixing with flange (12); Disc insulator (21) is coaxially fixing with flange (23).
Preferably, the madial wall of cylindrical shell (16) is arranged with two fixed blocks (17); Described two fixed blocks (17) are by fixing to flange (3) and flange (4).
Preferably, described housing bottom end cover (18) equals cylindrical shell (16) cross section, is highly less than the cylindrical structure of cylindrical shell (16) for cross section, described cylindrical shell (16), described flange (19), described flange (20), described flange (14), described disc insulator (15), described disc insulator (21) and described housing bottom end cover (18) all coaxial install and intersect vertical axis in the axis of a described high-tension shielding electrode (2).
Preferably, a described high-tension shielding electrode (2) surfaces externally and internally is connected by arc surface transition, and chamfering and polishing are all done in all junctions, and surface roughness is better than 3.2 μ m, makes electrode surface Electric Field Distribution more even.
Preferably, a described high-tension shielding electrode (2) inside is provided with and the coaxial mounted insulating epoxy pipe of a described high-tension shielding electrode (2) (7); The winding (6) that the surperficial coiling of described insulating epoxy pipe (7) is coaxial with a described high-tension shielding electrode (2); Between a described winding (6), adopt some glue polyester film (5) insulation, a described winding (6) and described some glue polyester film (5) form high pressure winding jointly.
Preferably, a described winding (6) number of turn is 325 circles, and it is that the high strength enamelled wire of 1.35mm divides two-layer coiling composition that a described winding (6) is selected diameter, and interlayer adopts a some glue polyester film (5) insulation.
Preferably, described secondary low-voltage bucking electrode (1) inside is provided with and the permalloy iron core (8) of the coaxial mounted cylindrical structure of described secondary low-voltage bucking electrode (1); The surperficial coiling mylar tape of described permalloy iron core (8) (10); The secondary winding (9) that the surperficial coiling of described mylar tape (10) is coaxial with described secondary low-voltage bucking electrode (1).
Preferably, the number of turn of described secondary winding (9) is 325 circles, and it is that the high strength enamelled wire of 1.0mm divides two-layer coiling composition that described secondary winding (9) is selected diameter, and interlayer adopts mylar tape (10) insulation.
Preferably, it is semicircle that described permalloy iron core (8) adopts two cross sections and equal-sized permalloy iron core forms spelling, and is then fixed between flange (3) and flange (4).
Preferably, in described sealing device, be filled with SF6 Compressed Gas, make a described high-tension shielding electrode (2) and described secondary low-voltage bucking electrode (1) insulation.
Preferably, the axle center of described disc insulator (15) and described disc insulator (21) is respectively equipped with the circular hole (22) that diameter equates with the center-hole diameter of flange (12) and flange (23).
Preferably, a described high-tension shielding electrode (2) is drawn two wiring by the centre bore of flange (12) and the circular hole in disc insulator (15) axle center.
Preferably, between described flange (3) and described flange (4), be provided with a circular hole (13), the dead in line of the axis of circular hole (13) and secondary low-voltage bucking electrode (1), described cylindrical shell (16) outside is provided with patchboard; Described secondary low-voltage bucking electrode (1) is drawn two wiring by circular hole (13), is connected to the patchboard on described cylindrical shell (16) after drawing.
Preferably, the port that a winding (6) is 220KV～1000KV with potential difference respectively with secondary winding (9) is connected.
Preferably, the capacitor of a stable performance of input series connection of a described winding (6), with the anti-formation resonance of a winding (6) leakage inductance.
Preferably, described cylindrical shell (16) adopts aluminium alloy to make; Described disc insulator (15) and described disc insulator (21) all adopt silicon dioxide and epoxy material cast to make.
With immediate technical scheme ratio, the invention has the beneficial effects as follows:
(1) full-shield high pressure isolating voltage mutual inductor compact conformation of the present invention, at the capacitor of the stable performance of input series connection of a winding, with the anti-formation resonance of winding leakage inductance, has improved the accuracy of voltage transformer;
(2) one times winding is arranged on high-tension shielding electrode interior one time, secondary winding is arranged on secondary low-voltage bucking electrode inside, make the potential change of a winding not change the capacitive Leakage Current to secondary winding, thereby the error of voltage transformer is not impacted;
(3) high-tension shielding electrodes and secondary low-voltage bucking electrode are arranged on the sealing metal cylindrical shell inside that is filled with SF6 Compressed Gas, by perfect shielding measure, have guaranteed that two voltage transformers keep original error performance constant in serial addition circuit measuring process;
(4) windings, secondary winding, high-tension shielding electrode and secondary low-voltage bucking electrode are coaxially installed, a high-tension shielding electrode design circlewise, surface roughness is better than 3.2 μ m, space electric field is distributed more even, obtains better insulation property;
(5) one times winding is connected with higher level's voltage transformer; Secondary winding is connected with subordinate voltage transformer, and the stack of secondary voltage in the time of can realizing two single electrode voltage mutual inductor serials promotes Voltage Series and adds the electric pressure that normal direction is higher and carry out transmission of quantity value.
Accompanying drawing explanation:
Fig. 1 is contour structures schematic diagram of the present invention.
Fig. 2 is part section structural representation of the present invention.
Fig. 3 is single unit system profile of the present invention.
Fig. 4 is Voltage Series addition principle line map of the present invention.
Description of symbols in Fig. 1: 1-secondary low-voltage bucking electrode; High-tension shielding electrode of 2-; The flange of the fixing secondary low-voltage bucking electrode of 3-; The flange of the fixing secondary low-voltage bucking electrode of 4-; 12-fixes the flange of a high-tension shielding electrode; 13-bis-times coiling draw circular hole.
Description of symbols in Fig. 2: 5-point glue polyester film; Winding of 6-; 7-insulating epoxy pipe; 8-permalloy iron core; 9-secondary winding; 10-mylar tape; High-tension shielding electrode opening section of 11-.
Description of symbols in Fig. 3: 12-fixes the flange of a high-tension shielding electrode; The flange of 14-fixing pot type insulator; The flange of 19-cylindrical shell one end; 22-once winds the line and draws circular hole; The flange of 15-disc insulator, 16-cylindrical shell, 17-fixed block, the 20-housing other end; 18-housing bottom end cover; 21-disc insulator; 23-fixes the flange of a high-tension shielding electrode.
Description of symbols in Fig. 4: T1-rated primary voltage is
higher level's voltage transformer; T2-rated primary voltage is
subordinate's voltage transformer; T3-rated primary voltage is U
full-shield high pressure isolating voltage mutual inductor.
Embodiment:
For a better understanding of the present invention, below in conjunction with accompanying drawing example, further illustrate content of the present invention.
As shown in Figure 1:
The invention provides a kind of full-shield high pressure isolating voltage mutual inductor, it is characterized in that:
Voltage transformer comprises the tubulose secondary low-voltage bucking electrode (1) being coaxially installed in a high-tension shielding electrode of ring-type (2), the flange of fixing respectively a high-tension shielding electrode (2) and secondary low-voltage bucking electrode (1);
Fix flange (12) be located at a high-tension shielding electrode (2) outside parallel with flange (23) of a high-tension shielding electrode (2);
The fixing flange (3) of secondary low-voltage bucking electrode (1) and the intersect vertical axis of flange (4) are in the axis of secondary low-voltage bucking electrode (1);
Between flange (3) and flange (4), be provided with a circular hole (13), the dead in line of the axis of circular hole (13) and secondary low-voltage bucking electrode (1);
A high-tension shielding electrode (2) and secondary low-voltage bucking electrode (1) all adopt aluminium alloy to make.
As shown in Figure 2:
It is entirety processing that a high-tension shielding electrode (2) adds man-hour, welding, later stage manually cuts out a fracture, the permalloy iron core (8) of secondary low-voltage bucking electrode (1) is positioned in the ring of a high-tension shielding electrode (2), the part (11) again this fracture being cut utilizes inner screw crimping mode to install back, forms an entirety; A high-tension shielding electrode (2) surfaces externally and internally is connected by arc surface transition, and chamfering and polishing are all done in all junctions, and surface roughness is better than 3.2 μ m, makes electrode surface Electric Field Distribution more even.
A described high-tension shielding electrode (2) inside is provided with and the coaxial mounted insulating epoxy pipe of a described high-tension shielding electrode (2) (7); The winding (6) that the surperficial coiling of described insulating epoxy pipe (7) is coaxial with a described high-tension shielding electrode (2); Between a described winding (6), adopt some glue polyester film (5) insulation, a described winding (6) and described some glue polyester film (5) form high pressure winding jointly.
A winding (6) shields completely in a high-tension shielding electrode (2) of ring-type, effectively must prevent that the winding (6) with high potential from producing Leakage Current to the secondary winding with electronegative potential (9).
A winding (6) number of turn is 325 circles, and it is that the high strength enamelled wire of 1.35mm divides two-layer coiling composition that a winding (6) is selected diameter, and interlayer adopts a some glue polyester film (5) insulation.
Secondary low-voltage bucking electrode (1) inside is provided with the permalloy iron core (8) with the coaxial mounted cylindrical structure of secondary low-voltage bucking electrode (1); The surperficial coiling mylar tape of permalloy iron core (8) (10); The secondary winding (9) that the surperficial coiling of mylar tape (10) is coaxial with secondary low-voltage bucking electrode (1), shields secondary winding (9) by the secondary low-voltage bucking electrode (1) of tubulose.
The number of turn of secondary winding (9) is 325 circles, and it is that the high strength enamelled wire of 1.0mm divides two-layer coiling composition that secondary winding (9) is selected diameter, and interlayer adopts mylar tape (10) insulation.
It is semicircle that permalloy iron core adopts two cross sections and equal-sized permalloy iron core forms spelling, and is then fixed between the flange of secondary low-voltage bucking electrode.
A winding (6) and secondary winding (9) and bucking electrode thereof are all designed to coaxial configuration, make the space electric field homogenizing as far as possible that distributes, and obtain better insulation property.
As shown in Figure 3:
Voltage transformer is installed in the middle of the sealing device being comprised of cylindrical shell (16), flange (19), flange (20), flange (14), disc insulator (15), disc insulator (21) and housing bottom end cover (18), in sealing device, be filled with SF6 Compressed Gas, make a described high-tension shielding electrode and the insulation of described secondary low-voltage bucking electrode.
Cylindrical shell (16) two ends are welded with flange (19) and flange (20), the edge of fixing pot type insulator (15), the edge of flange (20) fixing pot type insulator (21) and housing bottom end cover (18) between flange (19) and flange (14).
Disc insulator (15) is coaxially fixing with flange (12); Disc insulator (21) is coaxially fixing with flange (23).
The madial wall of cylindrical shell (16) is arranged with two fixed blocks (17); Two fixed blocks (17) are by fixing to flange (3) and flange (4).
Housing bottom end cover (18) equals cylindrical shell (16) cross section, is highly less than the cylindrical structure of cylindrical shell (16) for cross section, cylindrical shell (16), flange (19), flange (20), flange (14), disc insulator (15), disc insulator (21) and housing bottom end cover (18) all coaxial install and intersect vertical axis in the axis of a high-tension shielding electrode (2).
The axle center of disc insulator (15) and disc insulator (21) is respectively equipped with the circular hole (22) that diameter equates with the center-hole diameter of flange (12) and flange (23).
A high-tension shielding electrode (2) is drawn two wiring by the centre bore of flange (12) and the circular hole in disc insulator (15) axle center.
Between flange (3) and flange (4), be provided with a circular hole (13), the dead in line of the axis of circular hole (13) and secondary low-voltage bucking electrode (1), cylindrical shell (16) outside is provided with patchboard; Secondary low-voltage bucking electrode (1) is drawn two wiring by circular hole (13), is connected to the patchboard on cylindrical shell (16) after drawing.
Cylindrical shell adopts aluminium alloy to make and forms; Disc insulator (15) and disc insulator (21) all adopt silicon dioxide and epoxy material cast to make.
As shown in Figure 4: T1-rated primary voltage is
higher level's voltage transformer; T2-rated primary voltage is
subordinate's voltage transformer; T3-rated primary voltage is U
iII=
full-shield high pressure isolating voltage mutual inductor.
Higher level's voltage transformer T
1a winding A
1n
1with the voltage transformer T of subordinate
2a winding A
2n
2series connection, a winding AX of composition tandem instrument transformer, voltage
Higher level's secondary winding a
1n
1in parallel with a winding (6) of full-shield high pressure isolating voltage mutual inductor, the secondary winding (9) of full-shield high pressure isolating voltage mutual inductor and the voltage transformer T of subordinate
2secondary winding a
2n
2series connection; Higher level's secondary winding a thus
1n
1by full-shield high pressure isolating voltage mutual inductor T
3secondary winding a with subordinate
2n
2series connection, the secondary winding ax of composition tandem instrument transformer, voltage
the stack of secondary voltage while realizing two single electrode voltage mutual inductor serials, thus advance Voltage Series add normal direction more voltage levels carry out transmission of quantity value.
A winding (6) is connected with the port that secondary winding (9) is 220KV～1000KV with potential difference respectively.
In side circuit for the impact on voltage transformer accuracy of the large leakage inductance amount that reduces to cause due to the insulation distance between first and second winding, at the capacitor of the stable performance of input series connection of a winding (6), with the anti-formation resonance of winding leakage inductance, further improve the accuracy of voltage transformer.
These are only embodiments of the invention, be not limited to the present invention, within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in the claim scope of the present invention that application awaits the reply.
Claims (19)
1. a full-shield high pressure isolating voltage mutual inductor, is characterized in that:
Described voltage transformer comprises the tubulose secondary low-voltage bucking electrode (1) being coaxially installed in a high-tension shielding electrode of ring-type (2), the flange of fixing respectively a described high-tension shielding electrode (2) and described secondary low-voltage bucking electrode (1);
Flange (12) be located at a described high-tension shielding electrode (2) outside parallel with flange (23) of a fixing described high-tension shielding electrode (2);
The fixing flange (3) of described secondary low-voltage bucking electrode (1) and the intersect vertical axis of flange (4) are in the axis of described secondary low-voltage bucking electrode (1);
A described high-tension shielding electrode (2) and described secondary low-voltage bucking electrode (1) all adopt aluminium alloy to make.
2. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 1, is characterized in that:
Described voltage transformer is installed in the middle of the sealing device being comprised of cylindrical shell (16), flange (19), flange (20), flange (14), disc insulator (15), disc insulator (21) and housing bottom end cover (18).
3. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 2, is characterized in that:
Described cylindrical shell (16) two ends are welded with described flange (19) and described flange (20), between described flange (19) and described flange (14), fix the edge of described disc insulator (15), the edge of described flange (20) fixing pot type insulator (21) and described housing bottom end cover (18).
4. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 3, is characterized in that:
Described disc insulator (15) is coaxially fixing with flange (12); Described disc insulator (21) is coaxially fixing with flange (23).
5. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 2, is characterized in that:
The madial wall of cylindrical shell (16) is arranged with two fixed blocks (17); Described two fixed blocks (17) are by fixing to flange (3) and flange (4).
6. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 2, is characterized in that:
Described housing bottom end cover (18) equals cylindrical shell (16) cross section, is highly less than the cylindrical structure of cylindrical shell (16) for cross section, described cylindrical shell (16), described flange (19), described flange (20), described flange (14), described disc insulator (15), described disc insulator (21) and described housing bottom end cover (18) all coaxial install and intersect vertical axis in the axis of a described high-tension shielding electrode (2).
7. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 1, is characterized in that:
A described high-tension shielding electrode (2) surfaces externally and internally is connected by arc surface transition, and chamfering and polishing are all done in all junctions, and surface roughness is better than 3.2 μ m, makes electrode surface Electric Field Distribution more even.
8. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 1, is characterized in that:
A described high-tension shielding electrode (2) inside is provided with and the coaxial mounted insulating epoxy pipe of a described high-tension shielding electrode (2) (7); The winding (6) that the surperficial coiling of described insulating epoxy pipe (7) is coaxial with a described high-tension shielding electrode (2); Between a described winding (6), adopt some glue polyester film (5) insulation, a described winding (6) and described some glue polyester film (5) form high pressure winding jointly.
9. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 8, is characterized in that:
A described winding (6) number of turn is 325 circles, and it is that the high strength enamelled wire of 1.35mm divides two-layer coiling composition that a described winding (6) is selected diameter, and interlayer adopts a some glue polyester film (5) insulation.
10. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 1, is characterized in that:
Described secondary low-voltage bucking electrode (1) inside is provided with the permalloy iron core (8) with the coaxial mounted cylindrical structure of described secondary low-voltage bucking electrode (1); The surperficial coiling mylar tape of described permalloy iron core (8) (10); The secondary winding (9) that the surperficial coiling of described mylar tape (10) is coaxial with described secondary low-voltage bucking electrode (1).
11. a kind of full-shield high pressure isolating voltage mutual inductors as claimed in claim 10, is characterized in that:
The number of turn of described secondary winding (9) is 325 circles, and it is that the high strength enamelled wire of 1.0mm divides two-layer coiling composition that described secondary winding (9) is selected diameter, and interlayer adopts mylar tape (10) insulation.
12. a kind of full-shield high pressure isolating voltage mutual inductors as claimed in claim 10, is characterized in that:
It is semicircle that described permalloy iron core (8) adopts two cross sections and equal-sized permalloy iron core forms spelling, and is then fixed between flange (3) and flange (4).
13. a kind of full-shield high pressure isolating voltage mutual inductors as claimed in claim 2, is characterized in that:
In described sealing device, be filled with SF6 Compressed Gas, make a described high-tension shielding electrode (2) and described secondary low-voltage bucking electrode (1) insulation.
14. a kind of full-shield high pressure isolating voltage mutual inductors as claimed in claim 2, is characterized in that:
The axle center of described disc insulator (15) and described disc insulator (21) is respectively equipped with the circular hole (22) that diameter equates with the center-hole diameter of flange (12) and flange (23).
15. a kind of full-shield high pressure isolating voltage mutual inductors as claimed in claim 14, is characterized in that:
A described high-tension shielding electrode (2) is drawn two wiring by the centre bore of flange (12) and the circular hole in disc insulator (15) axle center.
16. a kind of full-shield high pressure isolating voltage mutual inductors as claimed in claim 2, is characterized in that:
Between described flange (3) and described flange (4), be provided with a circular hole (13), the dead in line of the axis of circular hole (13) and secondary low-voltage bucking electrode (1), described cylindrical shell (16) outside is provided with patchboard; Described secondary low-voltage bucking electrode (1) is drawn two wiring by circular hole (13), is connected to the patchboard on described cylindrical shell (16) after drawing.
17. a kind of full-shield high pressure isolating voltage mutual inductors as described in claim 9,11, is characterized in that:
A winding (6) is connected with the port that secondary winding (9) is 220KV～1000KV with potential difference respectively.
18. a kind of full-shield high pressure isolating voltage mutual inductors as claimed in claim 17, is characterized in that:
The capacitor of a stable performance of input series connection of a described winding (6), with the anti-formation resonance of a winding (6) leakage inductance.
19. a kind of full-shield high pressure isolating voltage mutual inductors as claimed in claim 2, is characterized in that:
Described cylindrical shell (16) adopts aluminium alloy to make; Described disc insulator (15) and described disc insulator (21) all adopt silicon dioxide and epoxy material cast to make.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310695456.XA CN103730247B (en) | 2013-12-17 | 2013-12-17 | A kind of full-shield high_voltage isolation type voltage transformer |
| PCT/CN2014/090162 WO2015090119A1 (en) | 2013-12-17 | 2014-11-03 | Full-shielding high-voltage isolated-type voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310695456.XA CN103730247B (en) | 2013-12-17 | 2013-12-17 | A kind of full-shield high_voltage isolation type voltage transformer |
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| Publication Number | Publication Date |
|---|---|
| CN103730247A true CN103730247A (en) | 2014-04-16 |
| CN103730247B CN103730247B (en) | 2016-04-20 |
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| WO (1) | WO2015090119A1 (en) |
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| WO2015090119A1 (en) * | 2013-12-17 | 2015-06-25 | 国家电网公司 | Full-shielding high-voltage isolated-type voltage transformer |
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| CN107545998B (en) * | 2017-10-27 | 2024-02-23 | 江苏思源赫兹互感器有限公司 | Isolation transformer |
| CN109346302B (en) * | 2018-12-03 | 2023-08-08 | 大连北方互感器集团有限公司 | Voltage transformer with high-voltage shielding and low-voltage shielding |
| CN115548713B (en) * | 2022-09-27 | 2023-03-21 | 哈尔滨工业大学 | High-voltage wiring board for connecting high-power pulse power supply and multiple loads |
| CN115631945A (en) * | 2022-10-26 | 2023-01-20 | 江苏靖江互感器股份有限公司 | Method for manufacturing primary winding of voltage transformer |
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| CN103730247B (en) * | 2013-12-17 | 2016-04-20 | 国家电网公司 | A kind of full-shield high_voltage isolation type voltage transformer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015090119A1 (en) * | 2013-12-17 | 2015-06-25 | 国家电网公司 | Full-shielding high-voltage isolated-type voltage transformer |
| 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 |
| CN107924753A (en) * | 2015-09-03 | 2018-04-17 | 西门子公司 | The wheel rim electrode and winding arrangement of measurement converter |
| CN105301550A (en) * | 2015-11-27 | 2016-02-03 | 国网宁夏电力公司电力科学研究院 | Split series combined voltage transformer |
| CN107462858A (en) * | 2017-06-20 | 2017-12-12 | 中国电力科学研究院 | A kind of voltage transformer magnitude tracing method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015090119A1 (en) | 2015-06-25 |
| CN103730247B (en) | 2016-04-20 |
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