CN215497736U - Novel HVDC intelligent local side power supply screen cabinet - Google Patents
Novel HVDC intelligent local side power supply screen cabinet Download PDFInfo
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- CN215497736U CN215497736U CN202121619079.8U CN202121619079U CN215497736U CN 215497736 U CN215497736 U CN 215497736U CN 202121619079 U CN202121619079 U CN 202121619079U CN 215497736 U CN215497736 U CN 215497736U
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Abstract
The utility model discloses a novel HVDC intelligent local side power supply cabinet, wherein a three-phase alternating current power supply is connected with a normally closed end of a surge protection switch, a normally open end of the surge protection switch is respectively connected with a double-power-supply changeover switch and a three-phase alternating current bus bar, the double-power-supply changeover switch is connected with a standby power supply, an output end of the standby power supply is connected with a load, phase lines of the three-phase alternating current bus bar are respectively connected with a measurement and control terminal through a first branch line, an output end of the standby power supply is connected with the measurement and control terminal through a second branch line, the phase lines of the three-phase alternating current bus bar are respectively connected with a direct current power supply module through three branch lines, a plurality of branch controllers are connected in parallel with each other and then are connected in series with the direct current power supply module through the direct current bus bar, the direct current bus bar is connected with an insulation detector through a fourth branch line, and an output end of each branch controller is connected with the load after being connected with a contactor in series. The utility model adopts double power supplies, and the stability of power supply is ensured by the double power supply change-over switch.
Description
Technical Field
The utility model relates to the field of power cabinets, in particular to a novel HVDC intelligent local side power supply cabinet.
Background
Dc power screens are power operated power sources used in power plants and substations. The direct current power supply is adopted at present, the direct current screen is used for supplying the direct current power supply, and the direct current screen provides power for control loads, power loads, direct current accident lighting loads and the like, and is the basis for control and protection of a modern power system. Especially, the intelligent local side power supply cabinet of HVDC (High-voltage direct current) is widely applied to High-power supply equipment of smart cities, 5G communication, smart street lamp poles, smart charging piles and the like.
However, the existing power supply cabinet has some defects, for example, only one path of alternating current power supply is connected, when the alternating current power supply fails, the maintenance can only be waited, the normal power supply is affected, the signal parameters and the like of each line in the power supply cabinet cannot be monitored in real time, and the power supply reliability is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a novel HVDC intelligent local side power supply cabinet, aiming at solving the technical problem.
The utility model is realized by the following steps:
a novel HVDC intelligent local side power supply screen cabinet comprises: the power supply cabinet and install the power supply module in the power supply cabinet, power supply module includes three-phase AC power supply, surge protection switch, stand-by power supply, three-phase AC bus row, DC power supply module, a plurality of branch controller, insulation detector, measurement and control terminal and two power change-over switch, three-phase AC power supply connects surge protection switch's normally closed end, surge protection switch's the normally open end connects respectively two power change-over switch with three-phase AC bus row, two power change-over switch connect stand-by power supply, stand-by power supply's output connection load, each phase line of three-phase AC bus row connects via first branch line respectively measurement and control terminal, stand-by power supply's output is connected via second branch line measurement and control terminal, each phase line of three-phase AC bus row connects via three branch line respectively the DC power supply module, the direct current power supply module is composed of a plurality of direct current modules which are connected in parallel, the shunt controllers are connected in parallel and then connected in series with the direct current power supply module through the direct current bus bar, the direct current bus bar is connected with the insulation detector through a fourth branch line, the number of the shunt controllers is the same as that of the direct current modules, and the output end of each shunt controller is connected with a load after being connected with a contactor in series.
Furthermore, the power supply module further comprises a lightning protection device, and one end of the three-phase alternating current bus bar, which is far away from the three-phase alternating current power supply, is connected with the lightning protection device.
Furthermore, the power supply module further comprises an intelligent gateway, and the intelligent gateway is respectively connected with the direct current power supply module and the shunt controller.
Further, the power cabinet comprises a cabinet body and a cabinet door, wherein a perspective window is arranged at the upper end of the cabinet door, and heat dissipation holes are formed in the lower end of the cabinet door.
Further, four ventilation holes are installed at the top of the cabinet body, a heat dissipation fan is installed at each through hole, and a fan of each heat dissipation fan is connected with the three-phase alternating current bus bar.
Furthermore, the fan is connected with a phase line and a zero line of the three-phase alternating current bus bar and is connected with a first air circuit breaker in series.
Further, a second air circuit breaker is connected in series between each direct current module and the three-phase alternating current bus bar.
Compared with the prior art, the utility model has the beneficial effects that: the utility model adopts double power supplies, ensures the stability of power supply through the double power supply changeover switch, and can be quickly switched to a standby power supply in time when one path of alternating current power supply circuit has power supply failure; the redundancy mode is utilized to ensure the reliability of direct current power supply; in addition, the shunt controller is adopted to realize the control and protection of each path of direct current module output, and when a fault occurs, a fault loop is quickly isolated; the parameter acquisition of each way of direct current module output is realized through the insulation detector to through intelligent networking gateway upload remote terminal, realize long-range real time monitoring.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram of an external appearance of a power cabinet according to the present invention;
fig. 2 is an electrical schematic within the power cabinet of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 and fig. 2, a novel HVDC intelligent local side power supply panel cabinet includes: the power supply comprises a power supply cabinet 100 and a power supply assembly arranged in the power supply cabinet, wherein the power supply assembly comprises a three-phase alternating-current power supply, a surge protection switch DK1, a standby power supply, a three-phase alternating-current bus bar (A1, B1, C1, N1), a direct-current bus bar (V +, V-), a direct-current power supply module (DCM1-DCM8), a plurality of shunt controllers (FC1-FC8), an insulation detector, a measurement and control terminal S751 and a dual-power change-over switch SK2, the three-phase alternating-current power supply is connected with a normally closed end of the surge protection switch DK1, a normally open end of the surge protection switch DK1 is respectively connected with the dual-power change-over switch SK2 and the three-phase alternating-current bus bar, the dual-power change-over switch SK2 is connected with the standby power supply, an output end of the standby power supply is connected with a load, phase lines of the three-phase alternating-current bus bar are respectively connected with the measurement and control terminal through a first branch line, stand-by power supply's output is connected via second branch circuit measurement and control terminal, each phase line that three-phase alternating current busbar was arranged is connected via three branch circuit respectively the DC power supply module, the DC power supply module comprises a plurality of direct current module that connect in parallel each other, a plurality of shunt control wares pass through after connecting in parallel each other the DC busbar arrange with the DC power supply module group is established ties, the DC busbar is arranged and is connected via fourth branch circuit the insulating detector, the quantity of shunt control ware with the quantity of DC module is the same, for example, can set up to 8, every way connect the load behind the output series connection contactor of shunt control ware.
Furthermore, the power supply module further comprises a lightning protection device, and one end of the three-phase alternating current bus bar, which is far away from the three-phase alternating current power supply, is connected with the lightning protection device.
Furthermore, the power supply module further comprises an intelligent gateway, and the intelligent gateway is respectively connected with the direct current power supply module and the shunt controller.
Further, the power cabinet comprises a cabinet body and a cabinet door, wherein a perspective window is arranged at the upper end of the cabinet door, and heat dissipation holes are formed in the lower end of the cabinet door.
Further, four ventilation holes are installed at the top of the cabinet body, a heat dissipation fan is installed at each through hole, and a fan of each heat dissipation fan is connected with the three-phase alternating current bus bar.
Further, the fan is connected with a phase line and a zero line of the three-phase alternating current bus bar and is connected with a first air circuit breaker SK1 in series.
Further, a second air circuit breaker (FK1-FK8) is connected in series between each of the DC modules and the three-phase AC bus bar.
The utility model adopts double power supplies, ensures the stability of power supply through the double power supply changeover switch, and can be quickly switched to a standby power supply in time when one path of alternating current power supply circuit has power supply failure; the redundancy mode is utilized to ensure the reliability of direct current power supply; in addition, the shunt controller is adopted to realize the control and protection of each path of direct current module output, and when a fault occurs, a fault loop is quickly isolated; the parameter acquisition of each way of direct current module output is realized through the insulation detector to through intelligent networking gateway upload remote terminal, realize long-range real time monitoring.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A novel HVDC intelligence local side power supply screen cabinet which characterized in that includes: the power supply cabinet and install the power supply module in the power supply cabinet, power supply module includes three-phase AC power supply, surge protection switch, stand-by power supply, three-phase AC bus row, DC power supply module, a plurality of branch controller, insulation detector, measurement and control terminal and two power change-over switch, three-phase AC power supply connects surge protection switch's normally closed end, surge protection switch's the normally open end connects respectively two power change-over switch with three-phase AC bus row, two power change-over switch connect stand-by power supply, stand-by power supply's output connection load, each phase line of three-phase AC bus row connects respectively via first branch line measurement and control terminal, stand-by power supply's output connects via second branch line measurement and control terminal, each phase line of three-phase AC bus row connects respectively via three branch line the DC power supply module, the direct-current power supply module is composed of a plurality of direct-current modules which are connected in parallel, the shunt controllers are connected in parallel and then connected with the direct-current power supply module in series through the direct-current bus bar, the direct-current bus bar is connected with the insulation detector through a fourth branch line, the number of the shunt controllers is the same as that of the direct-current modules, and the output end of each shunt controller is connected with a load after being connected with a contactor in series.
2. The cabinet according to claim 1, wherein the power module further comprises a lightning protection device, and the end of the three-phase ac busbar remote from the three-phase ac power supply is connected to the lightning protection device.
3. The novel HVDC intelligent local side power supply cabinet according to claim 1, wherein the power supply module further comprises an intelligent gateway, and the intelligent gateway is connected to the DC power supply module and the shunt controller respectively.
4. The novel HVDC intelligent local side power supply cabinet according to claim 1, wherein the power supply cabinet comprises a cabinet body and a cabinet door, wherein a transparent window is arranged at the upper end of the cabinet door, and heat dissipation holes are arranged at the lower end of the cabinet door.
5. The novel HVDC intelligent local side power supply panel cabinet according to claim 4, wherein four ventilation holes are installed at the top of the cabinet body, a heat dissipation fan is installed at each through hole, and a fan of the heat dissipation fan is connected with the three-phase AC bus bar.
6. The new HVDC intelligent local side power panel cabinet according to claim 5, wherein the fan is connected to one of the phase and neutral lines of the three-phase AC bus bar and is serially connected to a first air breaker.
7. The new HVDC smart local side power panel cabinet according to claim 1, wherein a second air break is connected in series between each said dc module and said three-phase ac bus bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121619079.8U CN215497736U (en) | 2021-07-16 | 2021-07-16 | Novel HVDC intelligent local side power supply screen cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121619079.8U CN215497736U (en) | 2021-07-16 | 2021-07-16 | Novel HVDC intelligent local side power supply screen cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215497736U true CN215497736U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121619079.8U Active CN215497736U (en) | 2021-07-16 | 2021-07-16 | Novel HVDC intelligent local side power supply screen cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215497736U (en) |
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2021
- 2021-07-16 CN CN202121619079.8U patent/CN215497736U/en active Active
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