CN211319890U - Miniaturized outdoor three-phase anti-ferromagnetic resonance voltage transformer - Google Patents
Miniaturized outdoor three-phase anti-ferromagnetic resonance voltage transformer Download PDFInfo
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- CN211319890U CN211319890U CN202020091935.6U CN202020091935U CN211319890U CN 211319890 U CN211319890 U CN 211319890U CN 202020091935 U CN202020091935 U CN 202020091935U CN 211319890 U CN211319890 U CN 211319890U
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Abstract
The utility model discloses a miniaturized outdoor three-phase anti-ferromagnetic resonance voltage transformer, which comprises a protective structure, a voltage transformer structure and a harmonic elimination unit; the voltage transformer structure: the voltage transformer structure comprises a transformer shell, wherein an A-phase wiring terminal is arranged on the upper surface of the transformer shell, a B-phase wiring terminal is arranged on one side of the A-phase wiring terminal, a C-phase wiring terminal is arranged on one side of the B-phase wiring terminal, and a secondary wiring terminal is arranged below the outer surface of one side of the transformer shell; the protection structure is as follows: the protection structure comprises a rain cover and a protection cover, the rain cover is positioned on the upper surface of the mutual inductor shell, the protection cover is positioned above one side of the outer surface of the mutual inductor shell, a rain guide groove is arranged on the rain cover, an arc-shaped port is arranged at one end of the rain guide groove, and the arc-shaped port corresponds to the protection cover; the utility model discloses small, light in weight can effectual anti ferromagnetic resonance, and anti ferromagnetic resonance is effectual.
Description
Technical Field
The utility model relates to a voltage transformer anti ferromagnetic resonance technical field specifically is a miniaturized outdoor three-phase anti ferromagnetic resonance voltage transformer.
Background
The voltage transformer is similar to a transformer, is an instrument for transforming voltage, and has the purpose of transforming voltage, and is mainly used for supplying power to a measuring instrument and a relay protection device, and is used for measuring the voltage, power and electric energy of a line, or is used for protecting valuable equipment, a motor and a transformer in the line when the line breaks down, so that the capacity of the voltage transformer is very small, generally only a few volt-amperes and dozens of volt-amperes, and the maximum voltage, the ferromagnetic resonance of the voltage transformer is usually generated in an electric system with a neutral point not grounded or grounded through an arc suppression coil, the voltage transformer causes explosion due to ferromagnetic resonance overvoltage, and the voltage transformer is forced to power failure due to ignition, even causes system collapse, the personnel safety of a crisis, the ferromagnetic resonance volt-ampere hazard is very large, and effective measures for resisting ferromagnetic resonance are necessarily adopted.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome current defect, provide a miniaturized outdoor three-phase anti ferromagnetic resonance voltage transformer, it is small, light in weight, can effectual anti ferromagnetic resonance, anti ferromagnetic resonance is effectual, can prevent rain and snow effectively to voltage transformer's erosion for voltage transformer's practical life is longer, can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: a miniaturized outdoor three-phase anti-ferromagnetic resonance voltage transformer comprises a protective structure, a voltage transformer structure and a resonance elimination unit;
the voltage transformer structure: the voltage transformer structure comprises a transformer shell, wherein an A-phase wiring terminal is arranged on the upper surface of the transformer shell, a B-phase wiring terminal is arranged on one side of the A-phase wiring terminal, a C-phase wiring terminal is arranged on one side of the B-phase wiring terminal, and a secondary wiring terminal is arranged below the outer surface of one side of the transformer shell;
the protection structure is as follows: the protection structure comprises a rain cover and a protection cover, the rain cover is positioned on the upper surface of the mutual inductor shell, the protection cover is positioned above one side of the outer surface of the mutual inductor shell, a rain guide groove is arranged on the rain cover, an arc-shaped port is arranged at one end of the rain guide groove, and the arc-shaped port corresponds to the protection cover;
a harmonic elimination unit: the harmonic elimination unit comprises a protective shell, a damping resistor is arranged inside the protective shell, a frequency discrimination assembly is arranged on one side of the damping resistor, a heat dissipation ceramic chip is arranged on the side face inside the protective shell, and a grounding end is arranged on the lower surface of the protective shell;
wherein: the transformer comprises a transformer shell and is characterized by further comprising an iron core, wherein the iron core is located inside the transformer shell, a primary winding is arranged on the upper portion of the iron core, a secondary winding is arranged on the lower portion of the primary winding, and the primary winding, the secondary winding and the iron core are poured into a whole through epoxy resin.
Furthermore, one side of mutual-inductor casing upper surface is equipped with ground terminal, makes single-phase ground connection convenient when detecting through ground terminal, guarantees equipment safety, and one side of ground terminal is equipped with the detection terminal, makes through the detection terminal and detects conveniently.
Further, the lower surface of mutual-inductor casing is equipped with the fixed plate, is equipped with the fixed orifices on the fixed plate, makes fixedly firm through the fixed plate, guarantees equipment safe and reliable in the work, one side of fixed plate is equipped with secondary earthing terminal, makes secondary wiring easy through secondary earthing terminal.
Furthermore, the frequency discrimination assembly is composed of a series resonance loop formed by a reactor, a capacitor and a relay, and is connected with an open triangular winding of the voltage transformer, so that frequency division resonance can be effectively eliminated through the frequency discrimination assembly, and safety and reliability of the voltage transformer during working are guaranteed.
Furthermore, the damping resistor is connected between the neutral point of the primary winding and the ground, and resonance is not easy to develop in the initial stage through the damping resistor.
Compared with the prior art, the beneficial effects of the utility model are that: this anti ferromagnetic resonance voltage transformer of outdoor three-phase of miniaturization has following benefit:
1. the utility model discloses on set up the fixed plate, make fixed firm through the fixed plate, guarantee equipment safe and reliable in work, can effectually eliminate the frequency division resonance through the frequency discrimination subassembly, safe and reliable when having guaranteed voltage transformer's work.
2. The utility model discloses on set up rain-proof cover, can effectually prevent the erosion of sleet to the mutual-inductor casing through rain-proof cover for voltage transformer life is longer, makes harmonic elimination unit radiating effect good through the heat dissipation ceramic chip, can protect protective housing through the protection casing, and primary winding, secondary winding and for the iron core epoxy pour into a whole and can prevent ferromagnetic resonance's emergence effectively.
3. The utility model discloses on set up the frequency discrimination subassembly, can effectual elimination frequency division resonance through the frequency discrimination subassembly, safe and reliable when having guaranteed voltage transformer's work, the utility model discloses small, light in weight can effectual anti ferromagnetic resonance, and anti ferromagnetic resonance is effectual, can prevent effectively that sleet from to voltage transformer's erosion for voltage transformer's practical life is longer.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic sectional side view of the present invention;
fig. 3 is an enlarged schematic view of the a position of the present invention.
In the figure: 1 secondary wiring terminal, 2 fixed plates, 3 fixed holes, 4 protection structures, 41 rain-proof covers, 42 protection covers, 5 grounding terminals, 6 detection terminals, 7 voltage transformer structures, 71A phase wiring terminals, 72B line wiring terminals, 73 transformer shells, 74C phase wiring terminals, 8 secondary windings, 9 iron cores, 10 primary windings, 11 harmonic elimination units, 111 damping resistors, 112 protection shells, 113 frequency discrimination assemblies, 114 grounding terminals, 12 heat dissipation ceramic tiles, 13 secondary grounding terminals, 14 rain guide grooves and 15 arc-shaped ports.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example one
Referring to fig. 1-3, the present invention provides a technical solution: a miniaturized outdoor three-phase anti-ferromagnetic resonance voltage transformer comprises a protective structure 4, a voltage transformer structure 7 and a resonance elimination unit 11;
voltage transformer structure 7: the voltage transformer structure 7 comprises a transformer shell 73, a fixing plate 2 is arranged on the lower surface of the transformer shell 73, a fixing hole 3 is formed in the fixing plate 2, the fixing plate 2 enables fixing to be firm and ensures safety and reliability of equipment in work, a secondary grounding end 13 is arranged on one side of the fixing plate 2, secondary wiring is easy through the secondary grounding end 13, an A-phase wiring terminal 71 is arranged on the upper surface of the transformer shell 73, a B-phase wiring terminal 72 is arranged on one side of the A-phase wiring terminal 71, a C-phase wiring terminal 74 is arranged on one side of the B-phase wiring terminal 72, and a secondary wiring terminal 1 is arranged below the outer surface of;
the protective structure 4: the protective structure 4 comprises a rain cover 41 and a protective cover 42, the protective shell 112 can be protected by the protective cover 42, erosion of rain and snow to the transformer shell 73 can be effectively prevented by the rain cover 41, so that the service life of the voltage transformer is longer, the rain cover 41 is positioned on the upper surface of the transformer shell 73, the protective cover 42 is positioned above one side of the outer surface of the transformer shell 73, a rain guide groove 14 is arranged on the rain cover 41, an arc-shaped port 15 is arranged at one end of the rain guide groove 14, and the arc-shaped port 15 corresponds to the protective cover 42;
the harmonic elimination unit 11: the resonance elimination unit 11 comprises a protective shell 112, a damping resistor 111 is arranged inside the protective shell 112, the damping resistor 111 is connected between a neutral point of a primary winding 10 and the ground, resonance is not easy to develop at the initial stage through the damping resistor 111, a frequency discrimination component 113 is arranged on one side of the damping resistor 111, the frequency discrimination component 113 is composed of a series resonance loop formed by a reactor, a capacitor and a relay, the frequency discrimination component 113 is connected with an open triangular winding of a voltage transformer, frequency division resonance can be effectively eliminated through the frequency discrimination component 113, safety and reliability of the voltage transformer during working are guaranteed, a heat dissipation ceramic chip 12 is arranged on the inner side surface of the protective shell 112, the resonance elimination unit 11 is good in heat dissipation effect through the heat dissipation ceramic chip 12, and a grounding end 114 is arranged on the lower surface of the protective;
wherein: the transformer also comprises an iron core 9, the iron core 9 is positioned inside the transformer shell 73, the upper part of the iron core 9 is provided with a primary winding 10, the lower part of the primary winding 10 is provided with a secondary winding 8, the primary winding 10, the secondary winding 8 and the iron core 9 are integrally poured by epoxy resin, one side of the upper surface of the transformer shell 73 is provided with a grounding terminal 5, single-phase grounding is convenient when the detection is carried out through the grounding terminal 5, the equipment safety is ensured, one side of the grounding terminal 5 is provided with a detection terminal 6, the detection is convenient through the detection terminal 6, the primary winding 10, the secondary winding 8 and the iron core 9 are integrally poured by epoxy resin, ferromagnetic resonance can be effectively prevented, frequency division resonance can be effectively eliminated through the frequency discrimination component 113, the safety and reliability of the voltage transformer when the work is ensured, the utility model has small volume, light weight and can effectively, the anti-ferromagnetic resonance effect is good, and the erosion of rain and snow to the voltage transformer can be effectively prevented, so that the practical service life of the voltage transformer is longer.
When in use: with A looks terminal 71, B line terminal 72 and C looks terminal 74 and outside primary line connection, be connected with the secondary through secondary binding post 1, can effectually prevent the erosion of sleet to mutual-inductor casing 73 through rain-proof cover 41, make voltage transformer life longer, it is good to make harmonic elimination unit 11 radiating effect through heat dissipation ceramic chip 12, can protect protective housing 112 through protection casing 42, primary winding 10, secondary winding 8 and iron core 9 pour into a whole with epoxy and can prevent ferromagnetic resonance's emergence effectively, can effectually eliminate frequency division resonance through frequency discrimination subassembly 113, safe and reliable when having guaranteed voltage transformer's work, make the resonance difficult development in initial stage through damping resistance 111.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an outdoor three-phase anti ferromagnetic resonance voltage transformer of miniaturization which characterized in that: the device comprises a protection structure, a voltage transformer structure and a harmonic elimination unit;
the voltage transformer structure: the voltage transformer structure comprises a transformer shell, wherein an A-phase wiring terminal is arranged on the upper surface of the transformer shell, a B-phase wiring terminal is arranged on one side of the A-phase wiring terminal, a C-phase wiring terminal is arranged on one side of the B-phase wiring terminal, and a secondary wiring terminal is arranged below the outer surface of one side of the transformer shell;
the protection structure is as follows: the protection structure comprises a rain cover and a protection cover, the rain cover is positioned on the upper surface of the mutual inductor shell, the protection cover is positioned above one side of the outer surface of the mutual inductor shell, a rain guide groove is arranged on the rain cover, an arc-shaped port is arranged at one end of the rain guide groove, and the arc-shaped port corresponds to the protection cover;
a harmonic elimination unit: the harmonic elimination unit comprises a protective shell, a damping resistor is arranged inside the protective shell, a frequency discrimination assembly is arranged on one side of the damping resistor, a heat dissipation ceramic chip is arranged on the side face inside the protective shell, and a grounding end is arranged on the lower surface of the protective shell;
wherein: the transformer comprises a transformer shell and is characterized by further comprising an iron core, wherein the iron core is located inside the transformer shell, a primary winding is arranged on the upper portion of the iron core, a secondary winding is arranged on the lower portion of the primary winding, and the primary winding, the secondary winding and the iron core are poured into a whole through epoxy resin.
2. The miniaturized outdoor three-phase anti-ferroresonant voltage transformer of claim 1, wherein: and one side of the upper surface of the transformer shell is provided with a grounding terminal, and one side of the grounding terminal is provided with a detection terminal.
3. The miniaturized outdoor three-phase anti-ferroresonant voltage transformer of claim 1, wherein: the lower surface of mutual-inductor casing is equipped with the fixed plate, is equipped with the fixed orifices on the fixed plate, one side of fixed plate is equipped with secondary earthing terminal.
4. The miniaturized outdoor three-phase anti-ferroresonant voltage transformer of claim 1, wherein: the frequency discrimination component is composed of a series resonance loop formed by a reactor, a capacitor and a relay, and is connected with an open-ended triangular winding of the voltage transformer.
5. The miniaturized outdoor three-phase anti-ferroresonant voltage transformer of claim 1, wherein: the damping resistor is connected between the neutral point of the primary winding and the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020091935.6U CN211319890U (en) | 2020-01-16 | 2020-01-16 | Miniaturized outdoor three-phase anti-ferromagnetic resonance voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020091935.6U CN211319890U (en) | 2020-01-16 | 2020-01-16 | Miniaturized outdoor three-phase anti-ferromagnetic resonance voltage transformer |
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| CN211319890U true CN211319890U (en) | 2020-08-21 |
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| CN202020091935.6U Active CN211319890U (en) | 2020-01-16 | 2020-01-16 | Miniaturized outdoor three-phase anti-ferromagnetic resonance voltage transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112489956A (en) * | 2020-11-20 | 2021-03-12 | 贵州电网有限责任公司 | Three-phase anti-resonance voltage transformer |
| CN114220641A (en) * | 2021-12-15 | 2022-03-22 | 江苏临海电气有限公司 | Dry-type transformer with ground point contact state detects |
| CN115497730A (en) * | 2022-10-12 | 2022-12-20 | 醴陵市浦口电瓷制造有限公司 | High-strength voltage transformer demagnetization protection structure and installation method thereof |
-
2020
- 2020-01-16 CN CN202020091935.6U patent/CN211319890U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112489956A (en) * | 2020-11-20 | 2021-03-12 | 贵州电网有限责任公司 | Three-phase anti-resonance voltage transformer |
| CN114220641A (en) * | 2021-12-15 | 2022-03-22 | 江苏临海电气有限公司 | Dry-type transformer with ground point contact state detects |
| CN115497730A (en) * | 2022-10-12 | 2022-12-20 | 醴陵市浦口电瓷制造有限公司 | High-strength voltage transformer demagnetization protection structure and installation method thereof |
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