CN215870303U - Power supply system with anti-interference function - Google Patents
Power supply system with anti-interference function Download PDFInfo
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- CN215870303U CN215870303U CN202122152026.6U CN202122152026U CN215870303U CN 215870303 U CN215870303 U CN 215870303U CN 202122152026 U CN202122152026 U CN 202122152026U CN 215870303 U CN215870303 U CN 215870303U
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Abstract
The utility model relates to a power supply system with an anti-interference function, which comprises: the incoming cabinet is provided with a power interface, and the power interface is used for connecting an input power supply; the frequency conversion cabinet is internally provided with a frequency converter, and the frequency converter is used for carrying out frequency conversion treatment; the main transformer cabinet is internally provided with a main transformer, the primary side of the main transformer is connected with the power interface, the secondary side of the main transformer is connected with the input end of the frequency converter, the main transformer is surrounded with an insulating cover body, and the insulating cover body is used for isolating the main transformer to prevent the main transformer from generating interference. According to the technical scheme, the insulating cover body can isolate the main transformer from other electric equipment in the power supply system, so that the magnetic field generated by the main transformer is prevented from interfering other equipment in the power supply system, and the reliability of the power supply system is improved.
Description
Technical Field
The present invention relates generally to the field of power supply systems. More particularly, the present invention relates to a power supply system having an interference prevention function.
Background
The high-voltage power grid adopts a high-voltage power transmission system, and the voltage transmitted by the high-voltage power transmission system cannot directly supply power to the electric equipment of a user due to overhigh voltage level, so that the high-voltage power transmission system is provided with an independent power supply system in scenes such as factories, parks, oil fields, mines and the like. The power supply system is provided with a transformer, and the primary side of the transformer is connected with a power grid and used for acquiring power supply voltage from the power grid and transforming the power supply voltage to obtain voltage suitable for equipment. In order to reduce the impact on the power grid, reduce the reactive loss and increase the effective power of the power grid, a frequency converter can be arranged on the secondary side of the transformer to carry out frequency conversion processing on the transformed power supply voltage.
When a transformer in a power supply system works, a strong magnetic field generated by the transformer can affect the working states of other electric equipment in the power supply system, such as interference on signals transmitted by signal lines in the power supply system. When signals in the power supply system are disturbed, a deviation may occur in the control of the power supply system, which may reduce the reliability of the power supply system.
As described above, the power supply system in the related art has a problem of poor reliability.
SUMMERY OF THE UTILITY MODEL
The utility model provides a power supply system with an anti-interference function, which at least solves the problem of poor reliability of the power supply system.
In order to solve the problems, the utility model provides the following technical scheme:
a power supply system with an anti-interference function, comprising: the incoming cabinet is provided with a power interface, and the power interface is used for connecting an input power supply; the frequency conversion cabinet is internally provided with a frequency converter, and the frequency converter is used for carrying out frequency conversion treatment; the main transformer cabinet is internally provided with a main transformer, the primary side of the main transformer is connected with the power interface, the secondary side of the main transformer is connected with the input end of the frequency converter, the main transformer is surrounded with an insulating cover body, and the insulating cover body is used for isolating the main transformer to prevent the main transformer from generating interference.
According to one embodiment of the utility model, a fan is arranged at the top of the main transformer, a vent is arranged at the bottom of the insulating cover body, an air channel from top to bottom is formed inside the insulating cover body, and the fan is matched with the vent and used for cooling the main transformer.
According to another embodiment of the utility model, a support is connected to the windings of the main transformer, said support being connected to the insulating enclosure for securing the insulating enclosure.
According to yet another embodiment of the present invention, a primary terminal is disposed on a first sidewall of the insulating cover, a secondary terminal is disposed on a second sidewall of the insulating cover, and the first sidewall is located opposite the second sidewall for reducing interference between the primary and secondary sides of the main transformer.
According to another embodiment of the utility model the primary side of said main transformer comprises at least two sets of coils for inputting different levels of voltage.
According to another embodiment of the present invention, the primary side of the main transformer is provided with a plurality of windings, the power supply system further includes a power switching cabinet, a power switching device is disposed in the power switching cabinet, an input end of the power switching device is connected to the power interface, and an output end of the power switching device is connected to the primary side of the main transformer, and is configured to switch a connection relationship between the power interface and each winding of the primary side of the main transformer.
According to another embodiment of the present invention, the incoming line cabinet, the power switching cabinet and the main transformer cabinet are arranged in parallel, the power switching cabinet is located between the incoming line cabinet and the main transformer cabinet, and the power switching cabinet is communicated with the incoming line cabinet.
According to another embodiment of the present invention, the power supply system further comprises a power supply cabinet, wherein a power transformer is disposed in the power supply cabinet, a primary side of the power transformer is connected to the power interface, and a secondary side of the power transformer is connected to the electric equipment in the power supply system, and is used for supplying power to the electric equipment in the power supply system.
According to another embodiment of the utility model, the primary side of the power transformer comprises a winding comprising a plurality of sets of taps for connecting different levels of input power.
According to a further embodiment of the utility model, the secondary side of the power transformer comprises at least two windings for outputting voltages of different levels.
According to the technical scheme provided by the utility model, the main transformer is surrounded by the insulating cover body, and the insulating cover body can isolate the main transformer from other electric equipment in the power supply system, so that the interference of a magnetic field generated by the main transformer on the signal transmission of other electric equipment in the power supply system is prevented. According to the power supply system provided by the utility model, the insulating cover body arranged in the power supply system can prevent the magnetic field generated by the main transformer from influencing other electric equipment, so that the reliability of the power supply system can be improved compared with the prior art.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:
fig. 1 is a schematic diagram of a power supply system with an anti-interference function according to an embodiment of the utility model;
fig. 2 is a schematic circuit diagram of a power supply system with an anti-interference function according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a main transformer according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of another main transformer according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of yet another main transformer according to an embodiment of the present invention;
FIG. 6 is a schematic view of an insulating enclosure according to an embodiment of the utility model;
FIG. 7 is a schematic diagram of a power supply system with a power switching cabinet according to an embodiment of the utility model;
FIG. 8 is a schematic diagram of a power supply system with a power cabinet according to an embodiment of the utility model;
FIG. 9 is a schematic diagram of a primary winding of a power transformer according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of a secondary winding of a power transformer according to an embodiment of the utility model;
fig. 11 is a schematic diagram of a power supply system with a junction box in a line cabinet according to an embodiment of the utility model;
the above-mentioned fig. 1 to 11 include: the power supply system comprises a wire inlet cabinet 1, a main transformer cabinet 2, a frequency conversion cabinet 3, a power supply switching cabinet 4, a power supply cabinet 5, a power supply interface 10, a main transformer 20, an insulating cover 21, a base 22, a first side wall 211, a second side wall 212, a third side wall 213, a fourth side wall 214, a first connecting piece 231, a second connecting piece 232, a primary side terminal 24, a secondary side terminal 25, a frequency converter 30, a junction box 11, a frequency conversion water cooling plate 310, a heat dissipation water cooling plate 320, a water tank 330, a circulating water pump 340, an air conditioner internal unit 321, an air conditioner external unit 322, a first winding 51 and a second winding 52.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it should be understood by those skilled in the art that the embodiments described below are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, fig. 1 is a schematic diagram illustrating a power supply system with an anti-interference function, fig. 2 is a schematic diagram illustrating a circuit of the power supply system with the anti-interference function, and fig. 3 is a schematic diagram illustrating a main transformer.
As shown in fig. 1, the power supply system with interference prevention function in this embodiment includes an incoming line cabinet 1, a main transformer cabinet 2 and a frequency conversion cabinet 3, wherein a power interface 10 is disposed inside or on a side wall of the incoming line cabinet 1, a main transformer 20 is disposed in the main transformer cabinet 2, and a frequency converter 30 is disposed in the frequency conversion cabinet 3.
As shown in fig. 2, the power interface 10 is used for connecting an input power source and receiving a power voltage from the input power source; the primary side of the main transformer 20 is connected to the power interface 10, and is configured to receive a power voltage from the power interface 10 and perform transformation processing on the power voltage; the input end of the frequency converter 30 is connected to the secondary side of the main transformer 20, and is configured to receive the transformed power supply voltage from the secondary side of the main transformer 20 and perform frequency conversion processing on the power supply voltage; the primary side of the power transformer 20 is connected to the power interface 10, and the secondary side is connected to the electrical equipment in the power supply system, and is configured to receive the power voltage from the power interface 10, and supply power to the electrical equipment in the power supply system after performing voltage transformation processing on the power voltage.
As shown in fig. 3, the main transformer 20 is surrounded by an insulating cover 21, that is, the insulating cover 21 is distributed along the circumferential direction of the main transformer 20 to enclose the main transformer 20. According to the technical scheme provided by the application, the y coupling insulating cover body 21 can isolate the main transformer 20 from other equipment in the power supply system, the acoustic system prevents the magnetic field generated by the acoustic system from interfering with other equipment in the power supply system, and the operation reliability of the power supply system is improved.
The overall structure of the power supply system is described above, and the following describes the insulating cover 21 in detail by taking a specific application scenario as an example.
As shown in fig. 4, in one embodiment, a base 22 is disposed at the bottom of the insulating cover 21, and the bottom of the insulating cover 21 is spaced from the base 22 by a predetermined length. The insulating cover 21 surrounds the main transformer 20, and an air duct extending vertically for ventilation is formed in the insulating cover 21, and an air outlet for air outlet is formed between the insulating cover 21 and the base 22. In addition, be provided with the fan at the top of main transformer 20, the wind channel cooperates with the fan for dispel the heat for main transformer: the wind generated by the fan blows from top to bottom in the wind channel, blows from the wind outlet, and can accelerate the air flow on the surface of the main transformer 20 when passing through the main transformer 20 in the insulating cover body 21, thereby dissipating heat of the main transformer 20.
In one embodiment, the main transformer 20 is connected to the insulating enclosure 21 by a connector. As shown in fig. 5, the insulating cage 21 includes a first sidewall 211, a second sidewall 212, a third sidewall 213 and a fourth sidewall 214, wherein the first sidewall 211 is opposite the second sidewall 212, and the third sidewall 213 is opposite the fourth sidewall 214. The first end of the main transformer 20 is connected to the first sidewall 211 of the insulating cover 21 through a first connector 231, and the second end is connected to the insulating cover 212 through a second connector 232, that is, the insulating cover 21 is fixed to the main transformer 20 through the first connector 231 and the second connector 232, and the first connector 231 and the second connector 232 provide a support for the insulating cover 21.
In one embodiment, the primary side terminals and the secondary side terminals of the main transformer 20 are located on the insulating enclosure 21. As shown in fig. 6, the primary side terminal 24 of the main transformer 20 is disposed on the fourth side wall 214 of the insulating enclosure 21 and the secondary side terminal 25 is disposed on the third side wall 213 of the insulating enclosure 21. Since the third sidewall 213 is opposite to the fourth sidewall 214, the distance between the primary terminal and the secondary terminal of the main transformer 20 can be increased, and the primary and secondary terminals of the main transformer 20 can be prevented from being disturbed, thereby improving the safety of the main transformer 20.
In the following, a power supply system is further improved, and a power supply switching device is arranged in the power supply system to improve the applicability of the power supply system.
As shown in fig. 7, in one embodiment, a power switching cabinet 4 is further disposed in the power supply system, a power switching device is disposed in the power switching device 4, an input end of the power switching device is connected to the power interface 10, an output end of the power switching device is connected to an input end of the power switching device, an output end of the power switching device is connected to the primary side of the main transformer 20, and the secondary side of the main transformer 20 is connected to an input end of the frequency converter 30. The primary side of the main transformer 20 includes a plurality of windings, and the number of turns of the coil in each winding is different, so that when each winding of the primary side of the main transformer 20 is connected to a power voltage of a corresponding voltage class, the secondary side of the main transformer 20 can output the same voltage value, which is set as a fifth set voltage value in this embodiment.
The input end of the power switching device is provided with a wiring port, the output end is provided with a plurality of wiring ports, wherein the wiring port in the input end is connected with the power interface 10, and each wiring port in the output end is respectively connected with a corresponding winding in the original side of the main transformer 20. In the present embodiment, when the power interface 10 is connected to an input power, the power switching device can connect the power interface 10 to the corresponding winding in the primary side of the main transformer 30, so that the secondary side of the main transformer 20 can output the fifth set voltage value no matter which voltage level of the input power is connected to the power interface 10. Therefore, the power supply system provided by the application can adopt input power supplies with a plurality of voltage levels, and the applicability of the power supply system can be improved.
In another embodiment, the incoming cabinet 1, the power switch cabinet 4 and the main transformer cabinet 2 are arranged in parallel, that is, the incoming cabinet 1, the power switch cabinet 4 and the main transformer cabinet 2 are arranged in sequence, and the power switch cabinet 4 is arranged at a position between the incoming cabinet 1 and the main transformer cabinet 2, so as to reduce the floor area of the power supply system. In addition, in this embodiment, the incoming line cabinet 1 is further communicated with the power switching cabinet 4, that is, the side of the incoming line cabinet 1 close to the power switching cabinet 4 and the side of the power switching cabinet 4 close to the incoming line cabinet 1 are eliminated, so that the circuit between the power interface 10 and the input end of the power switching device can be smoothly connected to the power switching cabinet 4, and the convenience of wiring between the power interface 10 and the power switching device is improved.
As shown in fig. 8, in one embodiment, a power supply cabinet 5 is further disposed in the power supply system, a power transformer is disposed in the power supply cabinet 5, a primary side of the power transformer is connected to the power interface 10, and a secondary side of the power transformer is connected to a power consumption device in the power supply system. In the power transformer, the primary side of the power transformer is used for obtaining the power voltage from the power interface 10, and then transforming the power voltage to obtain the voltage for supplying power to the electric equipment in the power supply system.
Furthermore, the coil of the primary side of the power transformer is provided with a plurality of taps, the transformation ratio of the power transformer can be changed by adjusting the connection mode among the taps, and the voltage of the secondary side of the power transformer can be kept unchanged when the power voltage changes.
Taking the structure shown in fig. 9 as an example, the primary side of the power transformer is provided with an a-phase winding, a B-phase winding and a C-phase winding, wherein the a-phase winding is provided with a tap X1, a tap X2 and a tap X3, the B-phase winding is provided with a tap Y1, a tap Y2 and a tap Y3, and the C-phase winding is provided with a tap Z1, a tap Z2 and a tap Z3. In this embodiment, taking the primary side of the power transformer as an example of a star connection mode, when the power voltage of the input power connected to the power interface 10 is a first set voltage value, the tap X2, the tap Y2, and the tap Z2 are connected in a star connection mode, so that the voltage output by the secondary side of the power transformer is a second set voltage value; when the power voltage of the input power connected to the power interface 10 is a third set voltage value (the third set voltage value is smaller than the first set voltage value), the tap X3, the tap Y3 and the tap Z3 are star-connected, so that the voltage output by the secondary side of the power transformer is a second set voltage value; when the power voltage of the input power connected to the power interface 10 is the fourth setting voltage value (the fourth setting voltage value is greater than the first setting voltage value), the tap X1, the tap Y1, and the tap Z1 are star-connected, so that the voltage output from the secondary side of the power transformer is the second setting voltage value. Therefore, when the voltage of the input power supply changes, the voltage output by the secondary side of the power supply transformer keeps unchanged, and is the second set voltage value, namely, the stability of the secondary side voltage of the power supply transformer can be improved.
In another embodiment, the secondary side of the power transformer includes a plurality of windings, and the windings have different numbers of turns and are respectively connected to different electric devices in the power supply system, so as to meet the power consumption requirements of the electric devices in the power supply system. Taking an implementation manner as an example, as shown in fig. 10, the secondary side of the power transformer includes a first winding 51 and a second winding 52, wherein an a-phase winding, a b-phase winding and a c-phase winding are disposed in the first winding 51, and an a ' -phase winding, a b ' -phase winding and a c ' -phase winding are disposed in the second winding 52. The first winding 51 is connected with an electric device with a rated voltage of 380V in a power supply system and is used for supplying power to the electric device with the rated voltage of 380V; the second winding 52 is connected to the 110V rated electric equipment in the power supply system, and is used for supplying power to the 110V rated electric equipment. Since the secondary side of the power transformer in this embodiment is provided with the plurality of windings, and can output voltages of a plurality of levels, a variety of electric devices can be provided in the power supply system, and the variety of the types of the electric devices in the power supply system can be improved.
Fig. 11 shows a schematic structural diagram of the inlet cabinet 1, and it can be understood that the inlet cabinet 1 described in fig. 11 is a modification of the inlet cabinet 1 in fig. 1, and therefore the description about the inlet cabinet 1 in fig. 1 also applies to the description about fig. 11 below.
As shown in fig. 11, a junction box 11 is disposed on an outer wall of the inlet box 1, the power supply interface 10 is assembled in the junction box 11, and an inlet line is disposed in the inlet box 1, and the inlet line is connected to the power supply interface 10 and a primary side of the main transformer 20, and is used for transmitting a power supply voltage received by the power supply interface 10 to the main transformer 20. According to the arrangement mode provided by the embodiment, the power interface 10 is assembled in the junction box 11 on the outer wall of the inlet wire cabinet 1, and when an input power supply is connected to the power interface 10, only the junction box 11 needs to be opened, so that the inlet wire cabinet 1 does not need to be opened, and the inlet wire cabinet does not contact with a circuit in the inlet wire cabinet 1, and therefore the convenience and the safety of the wiring of the power interface 10 can be improved.
In light of the foregoing description of the present specification, those skilled in the art will also understand that terms used to indicate orientation or positional relationship, such as "top," "bottom," "inner," "outer," etc., are based on the orientation or positional relationship shown in the drawings of the present specification and are used for the purpose of convenience in describing aspects of the present invention and simplifying the description, but do not explicitly or implicitly indicate that the device or element involved must have the particular orientation, be constructed and operated in the particular orientation, and thus should not be interpreted as limiting the scope of the present invention.
In addition, the terms "first" or "second", etc. used in this specification are used to refer to numbers or ordinal terms for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present specification, "a plurality" means at least two, for example, two, three or more, and the like, unless specifically defined otherwise.
While various embodiments of the present invention have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will occur to those skilled in the art without departing from the spirit and scope of the present invention. It should be understood that various alternatives to the embodiments of the utility model described herein may be employed in practicing the utility model. It is intended that the following claims define the scope of the utility model and that the module compositions, equivalents, or alternatives falling within the scope of these claims be covered thereby.
Claims (10)
1. A power supply system with an interference prevention function, comprising:
the incoming cabinet is provided with a power interface, and the power interface is used for connecting an input power supply;
the frequency conversion cabinet is internally provided with a frequency converter, and the frequency converter is used for carrying out frequency conversion treatment;
the main transformer cabinet is internally provided with a main transformer, the primary side of the main transformer is connected with the power interface, the secondary side of the main transformer is connected with the input end of the frequency converter, the main transformer is surrounded with an insulating cover body, and the insulating cover body is used for isolating the main transformer to prevent the main transformer from generating interference.
2. The power supply system with the interference preventing function according to claim 1, wherein a fan is disposed on a top of the main transformer, a vent is disposed on a bottom of the insulating cover, an air duct is formed inside the insulating cover from top to bottom, and the fan is matched with the vent for cooling the main transformer.
3. The power supply system with interference prevention function as claimed in claim 1, wherein a support is connected to the winding of the main transformer, and the support is connected to the insulating cover for fixing the insulating cover.
4. The interference-free power supply system of claim 1, wherein the insulating cover has a primary terminal disposed on a first side wall thereof, a secondary terminal disposed on a second side wall thereof, and the first side wall is located opposite the second side wall for reducing interference between the primary and secondary sides of the main transformer.
5. The power supply system with interference immunity as claimed in claim 1, wherein said primary side of said main transformer is provided with a plurality of windings, said power supply system further comprises a power switch cabinet, said power switch cabinet is provided with a power switch device, said power switch device has an input end connected to said power interface and an output end connected to said primary side of said main transformer for switching the connection relationship between said power interface and the windings of said primary side of said main transformer.
6. The power supply system with interference prevention function according to claim 5, wherein the incoming line cabinet, the power switch cabinet and the main transformer cabinet are arranged in parallel, the power switch cabinet is located between the incoming line cabinet and the main transformer cabinet, and the power switch cabinet is communicated with the incoming line cabinet.
7. The power supply system with the interference preventing function according to claim 1, further comprising a power supply cabinet, wherein a power transformer is disposed in the power supply cabinet, a primary side of the power transformer is connected to the power interface, and a secondary side of the power transformer is connected to the electric equipment in the power supply system for supplying power to the electric equipment in the power supply system.
8. The interference-free power supply system of claim 7, wherein the primary side of the power transformer includes windings with multiple sets of taps for connecting different levels of input power.
9. The power supply system with interference prevention function as claimed in claim 7, wherein the secondary side of the power transformer comprises at least two windings for outputting different levels of voltage.
10. The power supply system with interference prevention function as claimed in claim 1, wherein a junction box is arranged on an outer wall of the incoming cabinet, the junction box is assembled on the incoming cabinet, the power interface is arranged in the junction box, and a line connecting the power interface and a primary side of a main transformer is arranged in the incoming cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122152026.6U CN215870303U (en) | 2021-09-07 | 2021-09-07 | Power supply system with anti-interference function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122152026.6U CN215870303U (en) | 2021-09-07 | 2021-09-07 | Power supply system with anti-interference function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215870303U true CN215870303U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122152026.6U Active CN215870303U (en) | 2021-09-07 | 2021-09-07 | Power supply system with anti-interference function |
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| Country | Link |
|---|---|
| CN (1) | CN215870303U (en) |
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2021
- 2021-09-07 CN CN202122152026.6U patent/CN215870303U/en active Active
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