CN219576845U - Split type power module of flexible ring closing device - Google Patents
Split type power module of flexible ring closing device Download PDFInfo
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- CN219576845U CN219576845U CN202320249415.7U CN202320249415U CN219576845U CN 219576845 U CN219576845 U CN 219576845U CN 202320249415 U CN202320249415 U CN 202320249415U CN 219576845 U CN219576845 U CN 219576845U
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Abstract
The utility model relates to the technical field of power electronics, in particular to a split type power module of a flexible ring closing device, which comprises a power cabinet, a front-stage power unit, a rear-stage power unit, an inductor and a transformer, wherein the front-stage power unit and the rear-stage power unit are arranged in a front-side interval, and an air outlet side of the front-stage power unit and an air outlet side of the rear-stage power unit are communicated with a rear-side interval; the output end of the front-stage power unit is connected with the primary side of the transformer, the secondary side output of the transformer is connected with the input end of the rear-stage power unit, and the transformer, the front-stage power unit and the rear-stage power unit are all connected with the inductor through copper bars. The front-stage power unit and the rear-stage power unit of the power module can be assembled and tested respectively and independently, and the front-stage power unit, the rear-stage power unit, the inductor and the transformer can be disassembled, assembled and maintained by a single person in the maintenance process, so that the production, the test and the maintenance are convenient.
Description
Technical Field
The utility model relates to the field of split power modules of flexible ring closing devices.
Background
Along with the continuous improvement of the requirements of users on electricity demand, electric energy quality, power supply reliability and the like, the traditional power supply network is more and more difficult to meet the power supply demands of the users. The distribution network in China generally adopts the design principle of closed-loop design and open-loop operation, and the network structure can be optimized by regulating and controlling the states of the interconnection switch and the sectionalized switch, so that the high-efficiency operation of the distribution network is maintained, and the power supply recovery of a fault area is realized. The system contains larger impact current based on the switching-on and switching-off operation moment of the mechanical switch, and the stable operation of the system is affected.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a split type power module of a flexible ring closing device.
The utility model is realized by the following technical scheme:
the split type power module of the flexible ring closing device comprises a power cabinet, a front-stage power unit, a rear-stage power unit, an inductor and a transformer, wherein the power cabinet is divided into a front-side interval and a rear-side interval along the depth direction of the power cabinet, the front-stage power unit and the rear-stage power unit are arranged in the front-side interval, and an air outlet side of the front-stage power unit and an air outlet side of the rear-stage power unit are communicated with the rear-side interval; the output end of the front-stage power unit is connected with the primary side of the transformer, the secondary side output of the transformer is connected with the input end of the rear-stage power unit, the transformer, the front-stage power unit and the rear-stage power unit are all connected with the inductor through copper bars, the heat dissipation channel of the transformer is communicated with the rear side at intervals, the power cabinet is provided with a cabinet air outlet, and the cabinet air outlet is communicated with the rear side at intervals; the rated voltage of the transformer is 10kV.
Preferably, the front-stage power unit comprises a front-stage chassis, a front-stage capacitor, a high-voltage power unit control circuit board, a front-stage radiator, a front-stage chassis, a first high-voltage external power terminal, a first high-voltage internal power terminal, a front-stage laminated busbar, a first front-stage insulated gate bipolar transistor, a second front-stage insulated gate bipolar transistor and two front-stage IGBT driving circuit boards, wherein the front-stage capacitor, the high-voltage power unit control circuit board, the front-stage radiator, the front-stage chassis, the first high-voltage external power terminal, the first high-voltage internal power terminal, the front-stage laminated busbar, the first front-stage insulated gate bipolar transistor and the second front-stage insulated gate bipolar transistor are arranged in the front-stage chassis; the front-stage chassis is provided with a front-stage power module input port and a front-stage power wood block output port, the front-stage power module input port is connected with the input end of a first front-stage insulated gate bipolar transistor, the input end of the first front-stage insulated gate bipolar transistor is connected with a front-stage laminated busbar, a front-stage capacitor is connected with the front-stage laminated busbar, the front-stage laminated busbar is connected with the input of a second front-stage insulated gate bipolar transistor, the input of the second front-stage insulated gate bipolar transistor is connected with the output port of the front-stage power module, and the output port of the front-stage power module is connected with the primary side of the transformer; the two front-stage IGBT driving circuit boards are respectively arranged at the upper parts of the first front-stage insulated gate bipolar crystal and the second front-stage insulated gate bipolar crystal, and the output end of the high-voltage power unit control circuit board is connected with the front-stage IGBT driving circuit boards; the front side of the front-stage case is provided with a front-stage air inlet, and the rear side is provided with a front-stage air outlet.
Preferably, a front-stage handle is arranged on the outer side of the front-stage chassis.
Preferably, the rear power unit comprises a rear chassis, a first rear insulated gate bipolar transistor, a second rear insulated gate bipolar transistor, a rear capacitor, a low-voltage power unit control circuit board, a rear laminated busbar and two rear IGBT driving circuit boards, wherein the first rear insulated gate bipolar transistor, the second rear insulated gate bipolar transistor, the rear capacitor, the low-voltage power unit control circuit board, the rear laminated busbar and the two rear IGBT driving circuit boards are arranged in the rear chassis; the secondary side output of the transformer is connected with the secondary power module input port, the secondary power module input port is connected with the input end of a first secondary insulated gate bipolar transistor, the output end of the first secondary insulated gate bipolar transistor is connected with a secondary laminated busbar, the secondary laminated busbar is connected with the input of a second secondary insulated gate bipolar transistor, and the output of the second secondary insulated gate bipolar transistor is connected with the output port of the secondary power module; the two rear-stage IGBT driving circuit boards are respectively arranged at the upper parts of the first rear-stage insulated gate bipolar crystal and the second rear-stage insulated gate bipolar crystal, and the output end of the low-voltage power unit control circuit board is connected with the rear-stage IGBT driving circuit boards; the front side of the rear cabinet is provided with a rear air inlet, and the rear side is provided with a rear air outlet.
Preferably, a rear-stage handle is arranged on the outer side of the rear-stage chassis.
Preferably, the front-stage chassis and the rear-stage chassis are both in sheet metal structures.
Preferably, the power cabinet further comprises a heat dissipation fan arranged at the top of the power cabinet, and an air inlet of the heat dissipation fan is communicated with an air outlet of the cabinet body.
Preferably, the front stage power unit is arranged in mirror image with the rear stage power unit.
Compared with the prior art, the utility model has the following beneficial effects:
according to the split type power module of the flexible ring closing device, 10kV electrical isolation is carried out on the front-stage power unit and the rear-stage power unit through the transformer, insulation of a transformer shell is fully utilized, and power density is higher. And secondly, the front-stage power unit and the rear-stage power unit of the power module can be assembled and tested respectively and independently, and the front-stage power unit, the rear-stage power unit, the inductor and the transformer can be disassembled, assembled and maintained by a single person in the maintenance process, so that the production, the test and the maintenance are convenient. Finally, the ventilation modes are the front side air inlet and the rear side air outlet of the power unit, and simultaneously, the transformer can be cooled, so that the cooling air duct is shortened, the wind resistance is reduced, the cooling efficiency is improved, the transformer can be cooled better, and the working stability of the system can be improved. The power module is simple in structure, high in power density and convenient to replace and maintain rapidly.
Furthermore, in the heat dissipation process, air is introduced through front side air inlets of the front and rear power units, and is discharged from rear side hot air channel air outlets, so that heat dissipation and ventilation of the front and rear power units are realized, and heat dissipation of the transformer can be performed through the front and rear side air outlets of the front and rear power units.
Furthermore, the front-stage power unit case and the rear-stage power unit case of the power module adopt sheet metal structures, and the internal structural layout and the external installation position of the front-stage power unit case and the rear-stage power unit case are in mirror image design, so that the cost can be effectively reduced.
Furthermore, when air enters the heat dissipation air channel from the air inlets of the front stage power unit and the rear stage power unit, the air passes through the transformer and reaches the heat dissipation fan at the top of the power cabinet, so that heat dissipation and ventilation of the transformer are realized.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a split power module of a flexible ring-closing device according to the present utility model;
FIG. 2 is a schematic diagram showing the structure of a front stage power unit and a rear stage power unit according to the present utility model;
FIG. 3 is a schematic diagram showing the air inlet face of the front stage radiator and the air outlet face of the rear stage radiator according to the present utility model;
fig. 4 is a schematic view showing the air inlet face of the front radiator and the air inlet face of the rear radiator according to the present utility model.
In the figure, 1, a front-stage power unit; 2. a post-stage power unit; 3. an inductor; 4. a transformer; 11. a front stage power module input port; 12. a front stage power module output port; 13. a front stage air outlet; 14. a front stage air inlet; 15. a front-stage handle; 21. a rear stage power module input port; 22. a rear stage power module output port; 23. a rear-stage air outlet; 24. a rear stage air inlet; 25. a rear-stage handle.
Detailed Description
The utility model will now be described in further detail with reference to specific examples, which are intended to illustrate, but not to limit, the utility model.
The utility model discloses a split type power module of a flexible ring closing device, which comprises a power cabinet, a front-stage power unit 1, a rear-stage power unit 2, an inductor 3, a transformer 4 and a heat dissipation fan, wherein the front-stage power unit 1, the rear-stage power unit 2, the inductor 3 and the transformer 4 are respectively and independently fixed in the power cabinet through corresponding fixed hole sites, each unit can be independently disassembled and assembled, the disassembly and maintenance of a single person can be realized, and the fixed position of the inductor 3 can be adjusted according to the structural layout of the power cabinet and is flexibly installed.
The power cabinet is divided into a front side interval and a rear side interval along the depth direction, the front-stage power unit 1 and the rear-stage power unit 2 are arranged in the front side interval, and the air outlet side of the front-stage power unit 1 and the air outlet side of the rear-stage power unit 2 are communicated with the rear side interval; the output of preceding stage power unit 1 is connected with the input of transformer 4, the output of transformer 4 is connected with the input of back stage power unit 2, the heat dissipation way of transformer 4 communicates with the back side interval, be equipped with cabinet body air outlet on the power cabinet, cabinet body air outlet communicates with each other with the back side interval, the radiator fan is located the power cabinet top, the air intake and the cabinet body air outlet intercommunication of radiator fan, in the power cabinet, the air reaches transformer 4 through preceding stage power unit 1 and back stage power unit 2, by the heat dissipation fan discharge in power cabinet top, the heat dissipation of transformer 4 has been realized simultaneously.
Referring to fig. 2, 3 and 4, the front-stage power unit 1 includes a front-stage chassis, a front-stage capacitor located inside the front-stage chassis, a high-voltage power unit control circuit board, a front-stage radiator, a front-stage chassis, a first high-voltage external power terminal, a first high-voltage internal power terminal, a front-stage laminated busbar, a first front-stage insulated gate bipolar transistor, a second front-stage insulated gate bipolar transistor and two front-stage IGBT driving circuit boards; the front-stage chassis is provided with a front-stage power module input port 11 and a front-stage power wood block output port, the front-stage power module input port 11 is connected with the input end of a first front-stage insulated gate bipolar transistor, the input end of the first front-stage insulated gate bipolar transistor is connected with a front-stage laminated busbar, a front-stage capacitor is connected with the front-stage laminated busbar, the front-stage laminated busbar is connected with a second front-stage insulated gate bipolar transistor input, the second front-stage insulated gate bipolar transistor input is connected with a front-stage power module output port 12, and the front-stage power module output port 12 is connected with the primary side of the transformer 4; the two front-stage IGBT driving circuit boards are respectively arranged on the upper parts of the first front-stage insulated gate bipolar crystal and the second front-stage insulated gate bipolar crystal in a clamping manner, and the output end of the high-voltage power unit control circuit board is connected with the front-stage IGBT driving circuit boards through driving wires.
The front side of the front-stage chassis is provided with a front-stage air inlet 14, and the rear side is provided with a front-stage air outlet 13. The air passes through the front-stage air inlet 14 and reaches the front-stage air outlet 13 through the radiator fins in the front-stage power unit 1 to realize heat dissipation of the front-stage power unit 1.
The outer side of the front-stage chassis is provided with a front-stage handle 15, so that the front-stage power unit 1 can be conveniently assembled, disassembled and carried independently.
The rear-stage power unit 2 comprises a rear-stage chassis, a first rear-stage insulated gate bipolar transistor, a second rear-stage insulated gate bipolar transistor, a rear-stage capacitor, a low-voltage power unit control circuit board, a rear-stage laminated busbar and two rear-stage IGBT driving circuit boards, wherein the first rear-stage insulated gate bipolar transistor, the second rear-stage insulated gate bipolar transistor, the rear-stage capacitor, the low-voltage power unit control circuit board, the rear-stage laminated busbar and the two rear-stage IGBT driving circuit boards are arranged in the rear-stage chassis; the rear-stage chassis is provided with a rear-stage power module output port 22 and a rear-stage power module input port 21, the secondary side output of the transformer 4 is connected with the rear-stage power module input port 21, the rear-stage power module input port 21 is connected with the input end of a first rear-stage insulated gate bipolar transistor, the output end of the first rear-stage insulated gate bipolar transistor is connected with a rear-stage laminated busbar, the rear-stage laminated busbar is connected with the input of a second rear-stage insulated gate bipolar transistor, and the output of the second rear-stage insulated gate bipolar transistor is connected with the rear-stage power module output port 22; the two rear-stage IGBT driving circuit boards are respectively arranged at the upper parts of the first rear-stage insulated gate bipolar crystal and the second rear-stage insulated gate bipolar crystal in a clamping manner, and the output end of the low-voltage power unit control circuit board is connected with the rear-stage IGBT driving circuit boards through driving wires.
The front side of the rear cabinet is provided with a rear air inlet 24, and the rear side is provided with a rear air outlet. The air passes through the rear air inlet 24 and reaches the rear air outlet 23 through the radiator fins in the rear power unit 2 to realize heat dissipation of the rear power unit 2.
The outside of back level machine case is equipped with back level handle 25, conveniently carries out back level power unit 2 individual dismouting and transport.
The front-stage chassis or the rear-stage chassis adopts a sheet metal structure.
The fixed position of the inductor 3 can be adjusted according to the structural layout of the power cabinet, and the inductor is flexibly installed. The inductor 3 and the transformer 4 can be independently fixed in the power cabinet and electrically connected with the front-stage power unit 1 and the rear-stage power unit 2 through copper bars.
The foregoing description of the preferred embodiment of the present utility model is not intended to limit the technical solution of the present utility model in any way, and it should be understood that the technical solution can be modified and replaced in several ways without departing from the spirit and principle of the present utility model, and these modifications and substitutions are also included in the protection scope of the claims.
Claims (8)
1. The split type power module of the flexible ring closing device is characterized by comprising a power cabinet, a front-stage power unit (1), a rear-stage power unit (2), an inductor (3) and a transformer (4), wherein the power cabinet is divided into a front-side interval and a rear-side interval along the depth direction of the power cabinet, the front-stage power unit (1) and the rear-stage power unit (2) are arranged in the front-side interval, and the air outlet side of the front-stage power unit (1) and the air outlet side of the rear-stage power unit (2) are communicated with the rear-side interval; the output end of the front-stage power unit (1) is connected with the primary side of the transformer (4), the secondary side output of the transformer (4) is connected with the input end of the rear-stage power unit (2), the transformer (4), the front-stage power unit (1) and the rear-stage power unit (2) are all connected with the inductor (3) through copper bars, the heat dissipation channel of the transformer (4) is communicated with the rear side at intervals, a cabinet air outlet is arranged on the power cabinet, and the cabinet air outlet is communicated with the rear side at intervals; the rated voltage of the transformer (4) is 10kV.
2. The split power module of the flexible ring closing device according to claim 1, wherein the front power unit (1) comprises a front chassis, a front capacitor, a high-voltage power unit control circuit board, a front radiator, a front chassis, a first high-voltage external power terminal, a first high-voltage internal power terminal, a front laminated busbar, a first front insulated gate bipolar transistor, a second front insulated gate bipolar transistor and two front IGBT driving circuit boards, wherein the front capacitor, the high-voltage power unit control circuit board, the front radiator, the front chassis, the first high-voltage external power terminal, the first high-voltage internal power terminal, the front laminated busbar, the first front insulated gate bipolar transistor and the second front insulated gate bipolar transistor are located inside the front chassis; the front-stage chassis is provided with a front-stage power module input port (11) and a front-stage power wood block output port, the front-stage power module input port (11) is connected with the input end of a first front-stage insulated gate bipolar transistor, the input end of the first front-stage insulated gate bipolar transistor is connected with a front-stage laminated busbar, a front-stage capacitor is connected with the front-stage laminated busbar, the front-stage laminated busbar is connected with a second front-stage insulated gate bipolar transistor input, the second front-stage insulated gate bipolar transistor input is connected with a front-stage power module output port (12), and the front-stage power module output port (12) is connected with the primary side of the transformer (4); the two front-stage IGBT driving circuit boards are respectively arranged at the upper parts of the first front-stage insulated gate bipolar crystal and the second front-stage insulated gate bipolar crystal, and the output end of the high-voltage power unit control circuit board is connected with the front-stage IGBT driving circuit boards; the front side of the front-stage case is provided with a front-stage air inlet (14), and the rear side is provided with a front-stage air outlet (13).
3. The split power module of the flexible ring closing device according to claim 2, wherein a front-stage handle (15) is arranged on the outer side of the front-stage chassis.
4. The split power module of the flexible ring closing device according to claim 2, wherein the rear power unit (2) comprises a rear chassis, a first rear insulated gate bipolar transistor, a second rear insulated gate bipolar transistor, a rear capacitor, a low-voltage power unit control circuit board, a rear laminated busbar and two rear IGBT driving circuit boards, wherein the first rear insulated gate bipolar transistor, the second rear insulated gate bipolar transistor, the rear capacitor, the low-voltage power unit control circuit board and the rear laminated busbar are positioned in the rear chassis; the rear-stage chassis is provided with a rear-stage power module output port (22) and a rear-stage power module input port (21), the secondary side output of the transformer (4) is connected with the rear-stage power module input port (21), the rear-stage power module input port (21) is connected with the input end of a first rear-stage insulated gate bipolar transistor, the output end of the first rear-stage insulated gate bipolar transistor is connected with a rear-stage laminated busbar, the rear-stage laminated busbar is connected with the input of a second rear-stage insulated gate bipolar transistor, and the output of the second rear-stage insulated gate bipolar transistor is connected with the rear-stage power module output port (22); the two rear-stage IGBT driving circuit boards are respectively arranged at the upper parts of the first rear-stage insulated gate bipolar crystal and the second rear-stage insulated gate bipolar crystal, and the output end of the low-voltage power unit control circuit board is connected with the rear-stage IGBT driving circuit boards; the front side of the rear cabinet is provided with a rear air inlet (24), and the rear side is provided with a rear air outlet.
5. The split power module of claim 4, wherein a rear handle (25) is provided on the outside of the rear chassis.
6. The split power module of claim 4, wherein the front-stage chassis and the rear-stage chassis each have a sheet metal structure.
7. The split power module of claim 1, further comprising a heat dissipation fan disposed at the top of the power cabinet, wherein an air inlet of the heat dissipation fan is communicated with an air outlet of the cabinet.
8. The split power module of the flexible ring closing device according to claim 1, wherein the internal layout of the front stage power unit (1) and the internal layout of the rear stage power unit (2) are arranged in a mirror image manner; in the power cabinet, the installation position of the front-stage power unit (1) and the installation position of the rear-stage power unit (2) are arranged in a mirror image mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320249415.7U CN219576845U (en) | 2023-02-17 | 2023-02-17 | Split type power module of flexible ring closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320249415.7U CN219576845U (en) | 2023-02-17 | 2023-02-17 | Split type power module of flexible ring closing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219576845U true CN219576845U (en) | 2023-08-22 |
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ID=87669380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320249415.7U Active CN219576845U (en) | 2023-02-17 | 2023-02-17 | Split type power module of flexible ring closing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219576845U (en) |
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2023
- 2023-02-17 CN CN202320249415.7U patent/CN219576845U/en active Active
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