CN220796451U - Novel high-reliability electronic voltage transformer - Google Patents
Novel high-reliability electronic voltage transformer Download PDFInfo
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- CN220796451U CN220796451U CN202322374493.2U CN202322374493U CN220796451U CN 220796451 U CN220796451 U CN 220796451U CN 202322374493 U CN202322374493 U CN 202322374493U CN 220796451 U CN220796451 U CN 220796451U
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- signal
- voltage
- voltage divider
- auxiliary
- voltage transformer
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- 238000002955 isolation Methods 0.000 claims abstract description 29
- 230000003750 conditioning effect Effects 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 230000003321 amplification Effects 0.000 claims abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 7
- 239000004593 Epoxy Substances 0.000 claims 1
- 239000003822 epoxy resin Substances 0.000 abstract description 6
- 229920000647 polyepoxide Polymers 0.000 abstract description 6
- 238000004880 explosion Methods 0.000 abstract description 3
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 239000002585 base Substances 0.000 description 10
- 230000001143 conditioned effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000005350 ferromagnetic resonance Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Abstract
The utility model discloses a novel high-reliability electronic voltage transformer, relates to the technical field of transformers, and solves the technical problems that the traditional electromagnetic voltage transformer is easy to generate electromagnetic saturation phenomenon and damage the voltage transformer; the signal conversion box is arranged in the base, the shell is communicated with the base, epoxy resin for packaging the main voltage divider, the auxiliary voltage divider and the signal conversion box is poured in the shell and the base, the auxiliary voltage divider is electrically connected with the signal conversion box, and the signal isolation module, the signal conditioning circuit and the signal amplifying module are arranged in the signal conversion box. The utility model converts the connected high-voltage network voltage into the low-voltage signal by using the voltage divider, and performs isolation conditioning and signal amplification on the low-voltage signal, thereby replacing the traditional electromagnetic voltage transformer and avoiding explosion and electromagnetic saturation.
Description
Technical Field
The utility model belongs to the technical field of transformers, and particularly relates to a novel high-reliability electronic voltage transformer.
Background
The electromagnetic voltage transformer easily enters a saturation region when overvoltage or high-frequency harmonic wave exists, electromagnetic resonance of the electromagnetic voltage transformer is formed, and the voltage transformer is damaged. At present, in a traction substation or a direct current or alternating current-direct current-alternating current electric locomotive, a traditional high-voltage electromagnetic transformer widely applied often has short circuit, grounding and burning damage to cause machine breakage, even an oil-immersed high-voltage electromagnetic transformer can generate fire, in addition, when a power grid is disturbed or port contact is poor due to self vibration of the electromagnetic transformer, ferromagnetic resonance overvoltage can be caused, and the safety of power equipment and the power grid is seriously endangered. Therefore, the high failure rate of the dry voltage transformer has seriously endangered traction power supply safety, and the problem is solved. Therefore, a novel high-reliability electronic voltage transformer is provided to solve the problems.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a novel high-reliability electronic voltage transformer, which solves the problem that the traditional electromagnetic voltage transformer is easy to generate electromagnetic saturation phenomenon and damage the voltage transformer.
To achieve the above objective, according to an embodiment of the first aspect of the present utility model, a novel high-reliability electronic voltage transformer is provided, which includes a housing and a base installed at the bottom of the housing, a main voltage divider and an auxiliary voltage divider connected in series are provided in the housing, a signal conversion box is installed in the base, the housing is communicated with the base, epoxy resin for encapsulating the main voltage divider, the auxiliary voltage divider and the signal conversion box is poured in the housing and the base, the auxiliary voltage divider is electrically connected with the signal conversion box, a signal isolation module, a signal conditioning circuit and a signal amplifying module are installed in the signal conversion box, the signal isolation module is used for performing linear signal isolation on a network voltage signal output by the auxiliary voltage divider, the signal conditioning circuit is used for conditioning the isolated signal, and the signal amplifying module is used for amplifying the conditioned signal.
As a further technical scheme of the utility model, the main voltage divider and the auxiliary voltage divider are both resistor voltage dividers, the output end of the main voltage divider is electrically connected with the input end of the auxiliary voltage divider, the auxiliary voltage divider is used for providing zero voltage and calibrating zero point error of the main voltage divider, and the output end of the auxiliary voltage divider is electrically connected with the input end of the signal isolation module.
As a further technical scheme of the utility model, the output end of the signal isolation module is electrically connected with the input end of the signal conditioning circuit, and the output end of the signal conditioning circuit is electrically connected with the input end of the signal amplifying module.
As a further technical scheme of the utility model, the output end of the auxiliary voltage divider adopts a two-core aviation plug for output, and the two-core aviation plug is of IP67 protection grade.
As a further technical scheme of the utility model, the signal isolation module comprises a converter with an isolation voltage level of 2500VAC and 1min, and the signal amplification module comprises a signal amplifier.
As a further technical scheme of the utility model, the top end of the shell is fixedly provided with the binding post, the bottom end of the binding post is electrically connected with the input end of the main voltage divider through a wire, and the top end of the binding post is used for being connected with the net voltage to be input.
Compared with the prior art, the utility model has the beneficial effects that:
1. in the utility model, the input network voltage is conveniently reduced by the main voltage divider and the auxiliary voltage divider which are connected in series and converted into the low-voltage signal, the signal isolation module is used for conveniently carrying out linear signal isolation on the low-voltage signal, the signal conditioning circuit is used for conditioning the isolated low-voltage signal so as to meet the requirement of a control system or instrument equipment on the input signal, and the signal amplifying module is used for further amplifying the conditioned signal so as to increase the amplitude and stability of the signal and improve the quality and reliability of the signal.
2. According to the utility model, the main voltage divider, the auxiliary voltage divider and the signal conversion box are conveniently encapsulated by pouring epoxy resin in the shell and the base, water and oxygen in the atmosphere can be isolated, the service life of electronic components is prolonged, in addition, the electronic voltage transformer is oil-free, explosion cannot be generated, and the electronic power transformer cannot be saturated electromagnetically because of no iron core.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic diagram of the operation of the present utility model.
In the figure: 1. a housing; 2. a base; 3. a main voltage divider; 4. an auxiliary voltage divider; 5. a signal conversion box; 6. an epoxy resin; 7. a signal isolation module; 8. a signal conditioning circuit; 9. a signal amplifying module; 10. and (5) a binding post.
Detailed Description
The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in FIG. 1, a novel high reliability electronic voltage transformer comprises a shell 1 and a base 2 arranged at the bottom of the shell 1, wherein a main voltage divider 3 and an auxiliary voltage divider 4 which are connected in series are arranged in the shell 1, the main voltage divider 3 and the auxiliary voltage divider 4 are all resistor voltage dividers, a binding post 10 is fixedly arranged at the top end of the shell 1, the bottom end of the binding post 10 is electrically connected with the input end of the main voltage divider 3 through a wire, the top end of the binding post 10 is used for being connected with a network voltage to be input, the main voltage divider 3 is utilized to convert an accessed high-voltage network voltage signal into a low-voltage signal conveniently, the output end of the main voltage divider 3 is electrically connected with the input end of the auxiliary voltage divider 4, and the auxiliary voltage divider 4 is used for providing zero voltage and is used for calibrating zero error of the main voltage divider 3.
As shown in fig. 1, a signal conversion box 5 is installed in the base 2, the shell 1 is communicated with the base 2, and epoxy resin 6 for packaging the main voltage divider 3, the auxiliary voltage divider 4 and the signal conversion box 5 is poured in the shell 1 and the base 2, so that the main voltage divider 3, the auxiliary voltage divider 4 and the signal conversion box 5 are conveniently packaged and installed, the epoxy resin 6 has the functions of cleaning and dewatering, can isolate water and oxygen in the atmosphere, prolongs the service life of electronic components, and is electrically connected with the auxiliary voltage divider 4 and the signal conversion box 5.
As shown in fig. 1-2, a signal isolation module 7, a signal conditioning circuit 8 and a signal amplifying module 9 are installed in the signal conversion box 5, the output end of the auxiliary voltage divider 4 is electrically connected with the input end of the signal isolation module 7, the output end of the auxiliary voltage divider 4 adopts a two-core aviation plug for output, the two-core aviation plug is of an IP67 protection level, and can effectively bear locomotive vibration and rain and snow erosion, the signal isolation module 7 comprises a converter with isolation voltage level of 2500vac and 1min, and the signal isolation module 7 is used for carrying out linear signal isolation on a network voltage signal output by the auxiliary voltage divider 4;
the signal conditioning circuit 8 is used for conditioning the isolated signal so as to meet the requirement of a control system or instrument equipment on the input signal, the signal amplifying module 9 comprises a signal amplifier, the signal amplifying module 9 is used for amplifying the conditioned signal so as to increase the amplitude and stability of the signal and improve the quality and reliability of the signal, the output end of the signal isolating module 7 is electrically connected with the input end of the signal conditioning circuit 8, and the output end of the signal conditioning circuit 8 is electrically connected with the input end of the signal amplifying module 9.
The working principle of the utility model is as follows: the network voltage to be input is electrically connected with the binding post 10 at the top of the shell 1, the main voltage divider 3 is utilized to convert an accessed high-voltage network voltage signal into a low-voltage signal, the auxiliary voltage divider 4 is utilized to provide zero voltage for calibrating zero point errors of the main voltage divider 3, meanwhile, the auxiliary voltage divider 4 transmits the converted low-voltage signal to the signal isolation module 7 in the signal conversion box 5, the signal isolation module 7 is utilized to conduct linear signal isolation on the low-voltage signal, the signal conditioning circuit 8 is utilized to condition the isolated signal so as to meet the requirement of a control system or instrument equipment on the input signal, the signal amplification module 9 is utilized to amplify the conditioned signal so as to increase the amplitude and stability of the signal, the quality and reliability of the signal are improved, oil is not generated in the whole electronic voltage transformer, and the electronic voltage transformer is free from explosion and electromagnetic saturation phenomenon due to the fact that no iron core exists.
The above embodiments are only for illustrating the technical method of the present utility model and not for limiting the same, and it should be understood by those skilled in the art that the technical method of the present utility model may be modified or substituted without departing from the spirit and scope of the technical method of the present utility model.
Claims (6)
1. The utility model provides a novel high reliability electronic voltage transformer, its characterized in that, including shell (1) and base (2) of installing in shell (1) bottom, be equipped with main bleeder (3) and auxiliary bleeder (4) of establishing ties in shell (1), install signal conversion box (5) in base (2), shell (1) are linked together with base (2), and shell (1) and base (2) are interior to pour into a mould have epoxy (6) that are used for encapsulating main bleeder (3), auxiliary bleeder (4) and signal conversion box (5) electric connection, install signal isolation module (7), signal conditioning circuit (8) and signal amplification module (9) in signal conversion box (5), signal isolation module (7) are used for carrying out the linear signal isolation to the net pressure signal of auxiliary bleeder (4) output, signal conditioning circuit (8) are used for carrying out the regulation to the signal after the isolation, signal amplification module (9) are used for carrying out the signal after the regulation to the amplification.
2. The novel high-reliability electronic voltage transformer according to claim 1, wherein the main voltage divider (3) and the auxiliary voltage divider (4) are both resistor voltage dividers, an output end of the main voltage divider (3) is electrically connected with an input end of the auxiliary voltage divider (4), the auxiliary voltage divider (4) is used for providing zero voltage for calibrating zero error of the main voltage divider (3), and an output end of the auxiliary voltage divider (4) is electrically connected with an input end of the signal isolation module (7).
3. The novel high-reliability electronic voltage transformer according to claim 1, wherein the output end of the signal isolation module (7) is electrically connected with the input end of the signal conditioning circuit (8), and the output end of the signal conditioning circuit (8) is electrically connected with the input end of the signal amplifying module (9).
4. The novel high-reliability electronic voltage transformer according to claim 2, wherein the output end of the auxiliary voltage divider (4) is output by adopting a two-core aviation plug, and the two-core aviation plug is of an IP67 protection grade.
5. A new high reliability electronic voltage transformer according to claim 1, characterized in that the signal isolation module (7) comprises a converter with an isolation voltage level of 2500vac,1min, and the signal amplification module (9) comprises a signal amplifier.
6. The novel high-reliability electronic voltage transformer according to claim 1, wherein a binding post (10) is fixedly installed at the top end of the housing (1), the bottom end of the binding post (10) is electrically connected with the input end of the main voltage divider (3) through a wire, and the top end of the binding post (10) is used for being connected with a network voltage to be input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322374493.2U CN220796451U (en) | 2023-09-01 | 2023-09-01 | Novel high-reliability electronic voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322374493.2U CN220796451U (en) | 2023-09-01 | 2023-09-01 | Novel high-reliability electronic voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220796451U true CN220796451U (en) | 2024-04-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322374493.2U Active CN220796451U (en) | 2023-09-01 | 2023-09-01 | Novel high-reliability electronic voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220796451U (en) |
-
2023
- 2023-09-01 CN CN202322374493.2U patent/CN220796451U/en active Active
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