CN210985664U - Transformer output current adjusting device and transformer - Google Patents
Transformer output current adjusting device and transformer Download PDFInfo
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- CN210985664U CN210985664U CN202020024724.0U CN202020024724U CN210985664U CN 210985664 U CN210985664 U CN 210985664U CN 202020024724 U CN202020024724 U CN 202020024724U CN 210985664 U CN210985664 U CN 210985664U
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Abstract
The utility model relates to a transformer output current adjusting device and a transformer, wherein the transformer output current adjusting device comprises a current input end, a current limiting branch and a current output end; the current limiting branch circuits are more than two, a selection circuit breaker is arranged on each current limiting branch circuit, one end of each current limiting branch circuit is connected to a current input end, and the other end of each current limiting branch circuit is connected to a current output end; the current input end is connected to the low-voltage side of the transformer, and the current output end is connected to the power receiving side of the low-voltage incoming line cabinet. The transformer output current adjusting device is arranged in the transformer, and different current limiting branches are selected by the selection circuit breakers on the current limiting branches to be connected with the transformer, so that a user can adjust the output capacity of the transformer according to the actual production condition, and meanwhile, the basic electricity charge of the transformer of a power supply company paid by the user is reduced; the time for replacing the transformer in power failure is reduced, the investment cost is reduced, the using area of a power distribution room is reduced, and the power resources of a power supply company are fully and reasonably utilized.
Description
Technical Field
The utility model relates to an electric power distribution technical field, in particular to transformer output current adjusting device and transformer.
Background
At present, dry-type transformers are commonly used by power supply companies, and the commonly used capacities of the transformers are 30kVA, 50kVA, 80kVA, 100kVA, 125kVA, 160kVA, 200kVA, 250kVA, 315kVA, 400kVA, 500kVA, 630kVA, 800kVA, 1000kVA, 1250kVA, 1600kVA, 2000kVA and 2500 kVA. Wherein 250kVA or below is measured in a high supply and low quantity mode; 315kVA or more, and is measured by adopting a high-supply high-quantity mode.
At present, one transformer only corresponds to a unique capacity, as shown in fig. 1 to 3, for example, a factory building relates to planning the total capacity of the transformer to be 2000KVA, the first-period electric equipment load is about 1000KVA, and the scheme is as follows: if only one 2000KVA transformer is applied, two costs will be incurred: the basic cost of large industrial electricity and the total power of electric equipment are not changed, and the total capacity does not reach 2000KVA, so that the total investment is greatly wasted; scheme II: if a 1000KVA transformer is applied, the power consumption requirement of first-stage power equipment is met, when the second-stage production scale is enlarged, capacity increase is applied, and the 1000KVA transformer is newly used, so that the basic cost of the transformer is saved, the total investment cost is increased, and meanwhile, the required area of a power distribution room is large; the third scheme is as follows: if the space of the power distribution room is limited, the user needs to dismantle the original 1000KVA transformer and replace the original 1000KVA transformer with a 2000KVA transformer, so that two adverse effects are generated: the power failure time in the replacement process is very long, the normal production and power utilization are affected, and the construction cost is greatly increased.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a transformer output current regulating device and a transformer, which solve the problems that the capacity of the existing transformer is fixed and cannot be regulated, and when the total capacity changes, the number of transformers or the capacity of the existing transformer needs to be increased or decreased to achieve the capacity change, so that the large capital waste, the large workload of newly adding or replacing equipment, the power failure time and the long process of applying capacity change are caused.
In order to achieve the above object, the inventor provides a transformer output current adjusting device, which includes a current input terminal, a current limiting branch and a current output terminal;
The current limiting branch circuits are more than two, a selection circuit breaker is arranged on each current limiting branch circuit, one end of each current limiting branch circuit is connected to a current input end, and the other end of each current limiting branch circuit is connected to a current output end;
The current input end is connected to the low-voltage side of the transformer, and the current output end is connected to the power receiving side of the low-voltage incoming line cabinet.
Further preferably, the current-limiting branch comprises a current transformer and an ammeter, a primary side of the current transformer is connected to the current-limiting branch and is used as an input end for collecting current data, a secondary side of the current transformer is connected to the ammeter, and the ammeter is used as an output end for collecting current data.
Further optimization, the selective circuit breaker of the current-limiting branch circuit needs to have a linkage locking function.
Further optimization, an isolating switch is further arranged on the current-limiting branch.
Further preferably, the isolating switch comprises an upper isolating switch and a lower isolating switch, the upper isolating switch is arranged at one end of the current limiting branch connected to the current input end, and the lower isolating switch is arranged at one end of the current limiting branch connected to the current output end.
Further optimizing, the current input end and the current output end are connected by adopting a copper bar.
The inventor also provides another scheme: the transformer with the controllable output capacity is provided with an output current adjusting device, the output current adjusting device is connected to the low-voltage side of the transformer, and the output current adjusting device is the transformer output current adjusting device.
Different from the prior art, according to the technical scheme, the transformer output current adjusting device is arranged in the transformer, and different current limiting branches are selected to be connected with the transformer through the selected circuit breakers on the current limiting branches, so that a user can adjust the output capacity of the transformer according to the actual production condition, and meanwhile, the basic electricity charge of the transformer of a power supply company paid by the user is reduced; the time for replacing the transformer in power failure is reduced, the investment cost of the total project is reduced, the using area of a power distribution room is reduced, and the power resources of a power supply company are fully and reasonably utilized.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of the background art;
FIG. 2 is a schematic structural diagram of a second embodiment of the background art;
FIG. 3 is a schematic structural diagram of a third embodiment of the background art;
FIG. 4 is a schematic diagram of an embodiment of a transformer output current regulator;
FIG. 5 is a schematic diagram illustrating an expanded structure of the output current regulator of the transformer according to the embodiment;
Fig. 6 is a schematic diagram of a structure of a transformer with controllable output capacity according to an embodiment.
Description of reference numerals:
110. A current-limiting branch circuit is arranged on the power supply,
111. The circuit breaker is selected and the current is measured,
120. A current input end is connected with the power supply,
130. And a current output terminal.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 4-5, the present embodiment provides a transformer output current regulator, which includes a current input terminal 120, a current limiting branch 110, and a current output terminal 130;
The number of the current limiting branches 110 is more than two, a selective breaker 111 is arranged on each current limiting branch 110, one end of each current limiting branch 110 is connected to the current input end 120, and the other end of each current limiting branch 110 is connected to the current output end 130;
The current input end 120 is connected to the low voltage side of the transformer, and the current output end 130 is connected to the power receiving side of the incoming cabinet.
By arranging more than two current limiting branches 110, the current limiting branches 110 are connected in parallel, and the current limiting branch 110 is provided with a selective breaker 111, the current limiting branch 110 can be controlled to be communicated with a power supply input end and a power supply output end through the selective breaker 111, the output capacity of the transformer is controlled by connecting the power supply input end of the transformer output current regulating device to the low-voltage side of the transformer, for example, when the transformer with the capacity of 2000KVA is used, the low-voltage side is connected with a transformer output current regulating device with two current limiting branches 110, one current limiting branch 110 controls to output low-voltage electricity charges of 1000KVA, the other current limiting branch 110 controls to output low-voltage electricity charges of 2000KVA, when only the low-voltage electricity charges of 1000KVA are needed, as long as the current limiting branch 110 which controls to output the low-voltage electricity charges of 1000KVA is selected to be switched on through the selective breaker 111, and the current limiting branch 110, so that the transformer finally outputs low-voltage electricity charge of 1000 KVA; the capacity increase is needed, so that the current limiting branch 110 for outputting the 2000KVA low-voltage electric charge is selectively controlled to be connected through the selective breaker 111, and the current limiting branch 110 for outputting the 1000KVA low-voltage electric charge is controlled to be disconnected, thereby outputting the 2000KVA low-voltage electric charge. The user can adjust the output capacity of the transformer according to the actual production condition, and meanwhile, the basic electricity charge of the transformer of a power supply company paid by the user is reduced; the time for replacing the transformer in power failure is reduced, the investment cost of the total project is reduced, the using area of a power distribution room is reduced, and the power resources of a power supply company are fully and reasonably utilized.
In this embodiment, in order to conveniently read current data when the current limiting branch 110 outputs different transformer capacities, the current limiting branch 110 includes a current transformer and an ammeter, a primary side of the current transformer is connected to the current limiting branch 110, and a secondary side of the current transformer is connected to the ammeter. The current transformer is arranged on the current limiting branch circuit 110, and current data acquisition is carried out on the current output by the transformer through the current transformer, so that different current limiting branch circuits 110 output currents with different sizes, and further current data and transformer capacity data when the transformer outputs different capacities are read. In other embodiments, the reading may be performed in other manners to control different current limiting branches 110 to output different currents.
In this embodiment, in order to ensure the electrical safety, the selective breaker 111 of the current limiting branch 110 needs to have a linkage locking function. By setting the selection circuit breakers 111 of the current limiting branches 110 as linkage locking circuit breakers, when the selection circuit breaker 111 of one current limiting branch 110 is switched on, the selection circuit breakers 111 on other current limiting branches 110 are switched off through electrical and mechanical linkage, that is, only one selection circuit breaker 111 in one current limiting branch 110 is switched on, so that the switching-on of the selection circuit breakers 111 on two or more current limiting branches 110 is avoided, and the power utilization safety is ensured.
In this embodiment, an isolating switch is further disposed on the current limiting branch 110. The disconnecting link includes an upper isolating switch and a lower isolating switch, the upper isolating switch is disposed at one end of the current limiting branch 110 connected to the current input end 120, and the lower isolating switch is disposed at one end of the current limiting branch 110 connected to the current output end 130. The disconnection or connection of the current limiting branch circuit 110 can be controlled through the upper and lower isolating switches, so that the work of the current limiting branch circuit 110 is controlled, and the circuit breaker 111 can be conveniently selected for overhauling.
In the present embodiment, the current input terminal 120 and the current output terminal 130 are copper bars. The copper bar is a high-current conductive product and is suitable for electrical engineering of high-low voltage electrical appliances, switch contacts, power distribution equipment, bus ducts and the like.
Referring to fig. 6, in another embodiment, a transformer with controllable output capacity is provided with an output current adjusting device, the output current adjusting device is connected to the low-voltage side of the transformer, and the output current adjusting device is the transformer output current adjusting device.
More than two current-limiting branches are arranged, the current-limiting branches are connected in parallel, a selective breaker is arranged on the current-limiting branches, the current-limiting branches can be controlled to be communicated with a power supply input end and a power supply output end through the selective breaker, the power supply input end of a transformer output current adjusting device is connected to the low-voltage side of a transformer, the output capacity of the transformer is controlled, for example, when the capacity of the transformer is 2000KVA, the low-voltage side of the transformer is connected with a transformer output current adjusting device with two current-limiting branches, one current-limiting branch controls the output of low-voltage electricity charges of 1000KVA, the other current-limiting branch controls the output of low-voltage electricity charges of 2000KVA, when only the low-voltage electricity charges of 1000KVA are needed, only the current-limiting branch controlling the output of the low-voltage electricity charges of 1000KVA is selected to be connected through the, so that the transformer finally outputs low-voltage electricity charge of 1000 KVA; and capacity increasing is needed, so that the low-voltage electricity charge of 2000KVA is output, the current-limiting branch circuit for outputting the low-voltage electricity charge of 2000KVA is selected and controlled to be switched on through the circuit breaker, the current-limiting branch circuit for outputting the low-voltage electricity charge of 1000KVA is controlled to be switched off, and the low-voltage electricity charge of 2000KVA is output. The user can adjust the output capacity of the transformer according to the actual production condition, and meanwhile, the basic electricity charge of the transformer of a power supply company paid by the user is reduced; the time for replacing the transformer in power failure is reduced, the investment cost of the total project is reduced, the using area of a power distribution room is reduced, and the power resources of a power supply company are fully and reasonably utilized.
In this embodiment, be equipped with the lead sealing structure on the shell door of transformer, through adopting the anti-electricity-theft measure of lead sealing, only power supply department adjusts the output current adjusting device of transformer low pressure side deliberately, and when the lead sealing structure was destroyed, can know that the transformer is illegally opened, can carry out corresponding operation.
It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.
Claims (7)
1. A transformer output current regulating device is characterized by comprising a current input end, a current limiting branch and a current output end;
The current limiting branch circuits are more than two, a selection circuit breaker is arranged on each current limiting branch circuit, one end of each current limiting branch circuit is connected to a current input end, and the other end of each current limiting branch circuit is connected to a current output end;
The current input end is connected to the low-voltage side of the transformer, and the current output end is connected to the power receiving side of the low-voltage incoming line cabinet.
2. The apparatus as claimed in claim 1, wherein the current-limiting branch comprises a current transformer and an ammeter, the current transformer having a primary side connected to the current-limiting branch for collecting current data and a secondary side connected to the ammeter for collecting current data.
3. The transformer output current regulator according to claim 1, wherein the selective breaker of the current limiting branch circuit has a linkage locking function.
4. The transformer output current regulator of claim 1, wherein a disconnector is further disposed in the current limiting branch.
5. The output current regulator of claim 4, wherein the isolation switch comprises an upper isolation switch and a lower isolation switch, the upper isolation switch is disposed at one end of the current limiting branch connected to the current input end, and the lower isolation switch is disposed at one end of the current limiting branch connected to the current output end.
6. The output current regulator of claim 1, wherein the current input terminal and the current output terminal are connected by copper bars.
7. A transformer with controllable output capacity, characterized in that the transformer is provided with an output current regulating device, the output current regulating device is connected to the low voltage side of the transformer, and the output current regulating device is the transformer output current regulating device according to any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020024724.0U CN210985664U (en) | 2020-01-07 | 2020-01-07 | Transformer output current adjusting device and transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020024724.0U CN210985664U (en) | 2020-01-07 | 2020-01-07 | Transformer output current adjusting device and transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210985664U true CN210985664U (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020024724.0U Active CN210985664U (en) | 2020-01-07 | 2020-01-07 | Transformer output current adjusting device and transformer |
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| Country | Link |
|---|---|
| CN (1) | CN210985664U (en) |
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2020
- 2020-01-07 CN CN202020024724.0U patent/CN210985664U/en active Active
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Address after: 350001 rooms 01, 02, 03, 9, 10, 8 / F, Huayuan Building, 92 Dongda Road, Wenquan street, Gulou District, Fuzhou City, Fujian Province Patentee after: Fujian Construction Textile Design Institute Co.,Ltd. Address before: 350001 rooms 01, 02, 03, 9, 10, 8 / F, Huayuan Building, 92 Dongda Road, Wenquan street, Gulou District, Fuzhou City, Fujian Province Patentee before: Fujian architectural light textile design institute |
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