Distributed photovoltaic local communication device

Abstract

The utility model belongs to the field of communication devices, and particularly relates to a distributed photovoltaic local communication device. The system comprises a distributed photovoltaic system and a local communication device, the distributed photovoltaic system comprises a photovoltaic assembly, an inverter connected with the photovoltaic assembly, a transformer connected with the inverter and a data collector, and the local communication device comprises a master control module and a communication module. The main control module comprises a data input module connected with the data collector, an address distribution module connected with the data input module and a data storage module connected with the address distribution module, and the communication module comprises a signal converter connected with the data storage module and a power divider connected with the signal converter. The first signal coupler and the second signal coupler are connected with the power divider, and the LPWAN radio frequency module is connected with the first signal coupler and the second signal coupler.

Description

TECHNICAL FIELD

[0001] The utility model belongs to communication device technical field especially relates to a local communication device for distributed photovoltaic. BACKGROUND

[0002] With the rapid development of renewable energy, distributed photovoltaic power generation as an important form of clean energy has been widely used. However, the existing local communication device for distributed photovoltaic usually cannot efficiently realize data interaction between multiple devices, resulting in low system operation efficiency, poor maintenance and expansion of the device, and cannot meet the increasingly complex and diversified needs. In view of the above problems, it is of great significance to design a local communication device with efficient communication and modular installation function. SUMMARY

[0003] In view of the above problems in the prior art, the utility model patent solves the technical problem of providing a local communication device for distributed photovoltaic to solve the problems of low communication efficiency and poor expansion in the prior art.

[0004] The local communication device for distributed photovoltaic includes a distributed photovoltaic system and a local communication device, the distributed photovoltaic system includes a photovoltaic assembly, an inverter connected with the photovoltaic assembly, a transformer and a data collector connected with the inverter.

[0005] Further, the local communication device includes a control module and a communication module, the control module includes a data input module connected with the data collector for inputting data in the distributed photovoltaic system, an address allocation module connected with the data input module for allocating communication addresses for devices in the photovoltaic power generation system, and a storage data module connected with the address allocation module for storing device data of the distributed photovoltaic system.

[0006] Further, the communication module includes a signal converter connected with the storage data module for converting stored data into signals, a power divider connected with the signal converter for dividing the signals to obtain two-way branch signals, and sending them to a first signal coupler and a second signal coupler, a first signal coupler and a second signal coupler connected with the power divider for coupling processing of the branch signals to obtain combined signals, and an LPWAN radio frequency module connected with the first signal coupler and the second signal coupler for communication with the management terminal.

[0007] Further, the communication module is connected with the devices in the distributed photovoltaic system through Modbus protocol.

[0008] Further, the local communication device box is further provided with a photovoltaic module installed at the top end of the box, an inverter, a transformer, a data collector, a data input module, an address allocation module, a storage data module, a signal converter, a power divider, a first signal coupler, a second signal coupler and an LPWAN radio frequency module are arranged in the box.

[0009] Further, the top of the box is further provided with a modular mounting groove for quickly mounting or replacing the equipment module.

[0010] Further, the front side of the box is provided with a state indicating lamp for displaying the working state of the equipment.

[0011] Further, the upper and lower sides of the box are both provided with a heat dissipation opening.

[0012] Further, the heat dissipation opening is provided with a filter screen.

[0013] Further, the rear side of the box is provided with a connecting rod and a handle, and the connecting rod and the handle penetrate the box.

[0014] Further, the box is fixed with a plurality of mounting lugs, and the connecting bolt is connected to each mounting lug.

[0015] Further, the box is provided with a protective coating on the outside, which can prevent the influence of external environmental factors such as moisture and corrosion on the equipment, and prolong the service life of the equipment.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model discloses a modular design, which makes the installation, maintenance and replacement of the equipment more convenient and efficient, effectively shortens the maintenance time and improves the reliability of system operation. The device integrates the state indicating function, can monitor the running state of the equipment in real time, provides the intuitive and convenient means for fault troubleshooting and operation optimization. In addition, the local communication device supports efficient communication mode, adopts the standard Modbus protocol, ensures the seamless connection and data interaction between other equipment. In order to adapt to various complex environments, the device is designed with a protective coating on the outside, which can effectively resist the influence of environmental factors such as moisture and corrosion, thereby significantly improving the adaptability and service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the equipment connection drawing of the utility model;

[0019] Figure 2 It is the structure schematic drawing of the utility model;

[0020] Figure 3 It is the front side structure schematic drawing of the utility model;

[0021] Figure 4 It is the right side structure schematic view of the utility model;

[0022] Figure 5 It is the overhead structure schematic view of the utility model.

[0023] The names of various components in the figure: 1, distributed photovoltaic system, 2, local communication device, 3, main control module, 4, communication module, 5, management terminal, 6, photovoltaic module, 7, inverter, 8, transformer, 9, data collector, 10, data input module, 11, address allocation module, 12, storage data module, 13, signal converter, 14, power divider, 15, first signal coupler, 16, second signal coupler, 17, LPWAN radio frequency module, 18, local communication device box, 19, modular mounting slot, 20, status indicator light, 21, heat dissipation port, 22, filter screen, 23, connecting rod, 24, handle, 25, mounting ear seat, 26, protective coating. DETAILED DESCRIPTION

[0024] The utility model will be further described by specific embodiments in connection with the drawings, but not to limit the utility model, any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model, should be included in the protection scope of the present application.

[0025] Example 1

[0026] Referring to Figure 1 The local communication device for distributed photovoltaic described in the embodiment comprises a distributed photovoltaic system 1 and a local communication device 2, and the distributed photovoltaic system comprises a plurality of power equipment, which comprises a photovoltaic module 6, an inverter 7, a transformer 8 and a data collector 9. The photovoltaic module 6 is a battery module that converts light energy into direct-current electric energy to generate electricity under exposure to sunlight. In actual use, the photovoltaic module 6 is usually grouped to generate the required direct-current electric energy; the inverter 7 is used to convert the direct-current electric energy generated by the photovoltaic module into alternating-current electric energy; the transformer 8 is used to input the alternating-current electric energy generated by the inverter 7 into the power grid after boosting to transmit electric energy; and the data collector 9 is used to collect data such as working parameters and electric energy output of the photovoltaic module 6 and the inverter 7, and then the working state of the photovoltaic module 6 and the inverter 7 can be monitored based on the collected data.

[0027] The local communication device 2 comprises a master module 3 and a communication module 4, the master module 3 comprises a data input module 10, an address allocation module 11 and a storage data module 12. In actual use, the data input module 10 is used for inputting the data of the related equipment in the distributed photovoltaic system; the address allocation module 11 is used for allocating the communication address of the equipment in the photovoltaic power generation system; and the storage data module 12 is used for storing the equipment data of the distributed photovoltaic system.

[0028] The communication module 4 comprises a signal converter 13, a power divider 14, a first signal coupler 15, a second signal coupler 16 and an LPWAN radio frequency module 17. In actual use, the signal converter 13 is used for converting the stored data into signals; the power divider 14 is used for branching the signals to obtain two branched signals, which are sent to the first signal coupler and the second signal coupler; the first signal coupler 15 and the second signal coupler 16 are used for coupling the branched signals to obtain combined signals; and the LPWAN radio frequency module 17 is used for communicating with the management terminal 5. In addition, the communication module 4 is connected with the equipment in the distributed photovoltaic system through the Modbus protocol.

[0029] Embodiment 2

[0030] This embodiment further illustrates the technology and comprises a local communication device box 18. The photovoltaic module 6 is installed at the top of the box 18, as shown in Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , the inverter 7, the transformer 8, the data collector 9, the data input module 10, the address allocation module 11, the storage data module 12, the signal converter 13, the power divider 14, the first signal coupler 15, the second signal coupler 16 and the LPWAN radio frequency module 17 are all inside the box 18. In actual use, the inverter 7, the transformer 8, the data collector 9, the data input module 10, the address allocation module 11, the storage data module 12, the signal converter 13, the power divider 14, the first signal coupler 15, the second signal coupler 16 and the LPWAN radio frequency module 17 are all protected in the box 18.

[0031] Embodiment 3

[0032] This embodiment further illustrates the technology. The top of the box 18 is also provided with a modular mounting groove 19. In actual use, the modular mounting groove 19 is used for quickly installing or replacing the equipment modules.

[0033] Embodiment 4

[0034] This embodiment further illustrates the technology. The front side of the box 18 is provided with a state indicating lamp 20, as shown in Figure 3As shown in the figure. In actual use, the working state of the device is displayed by the state indicating lamp 20.

[0035] Embodiment 5

[0036] This embodiment further illustrates the technology. As shown in the figure, the left and right sides of the box 18 are provided with heat dissipation openings 21. Figure 2 In actual use, the interior of the protective box 18 is cooled by the heat dissipation openings to prevent the temperature inside the protective box 17 from being too high and causing damage to electronic components.

[0037] As shown in the figure, a filter screen 22 is installed in each heat dissipation opening 21. Figure 2 In actual application, the filter screen 22 prevents dust from entering the interior of the protective box 18.

[0038] Embodiment 6

[0039] This embodiment further illustrates the technology. As shown in the figure, the rear side of the box 18 is provided with a connecting rod 23 and a handle 24, which penetrates the box 18. Figure 4 and Figure 5 In actual use, the handle 24 drives the connecting rod 23 to move vertically.

[0040] Embodiment 7

[0041] This embodiment further illustrates the technology. As shown in the figure, a plurality of mounting lugs 25 are fixed to the box 18, and a connecting bolt is connected to each mounting lug 25. Figure 2 In actual use, the plurality of connecting bolts are provided to facilitate installation with external connecting parts, so that the device can be stably fixed.

[0042] Embodiment 8

[0043] This embodiment further illustrates the technology. As shown in the figure, the box 18 is provided with a protective coating 26. Figure 2 , Figure 3 , Figure 4 and Figure 5 In actual use, the protective coating 26 can prevent the influence of external environmental factors such as moisture and corrosion on the device, prolonging the service life of the device.

[0044] The present application can also combine any one or more features of embodiments 2-8 with embodiment 1 to form a new implementation.

[0045] It should be noted that the above embodiments are not intended to limit the scope of protection of the present application. Any equivalent transformation or substitution made on the basis of the above technical solutions falls within the scope of protection claimed by the present application.

Claims

1. A distributed photovoltaic local communication arrangement, comprising a distributed photovoltaic system (1) and a local communication arrangement (2), characterized in that: The distributed photovoltaic system (1) comprises a photovoltaic module (6), an inverter (7) connected with the photovoltaic module (6), a transformer (8) and a data collector (9) connected with the inverter (7); The local communication device (2) comprises a master control module (3) and a communication module (4), the master control module (3) comprises a data input module (10) connected with the data collector, used for inputting data in the distributed photovoltaic system; an address allocation module (11) connected with the data input module, used for allocating communication addresses for devices in the photovoltaic power generation system; and a storage data module (12) connected with the address allocation module, used for storing device data of the distributed photovoltaic system; The communication module (4) comprises a signal converter (13) connected with the storage data module (12), used for converting the stored data into signals; a power divider (14) connected with the signal converter (13), used for dividing the signals to obtain two branch signals, which are sent to a first signal coupler and a second signal coupler; a first signal coupler (15) and a second signal coupler (16) connected with the power divider (14), used for coupling the branch signals to obtain combined signals; and an LPWAN radio frequency module (17) connected with the first signal coupler (15) and the second signal coupler (16), used for communicating with the management terminal (5).

2. The distributed photovoltaic local communication device according to claim 1, wherein: The communication module (4) is connected with the devices in the distributed photovoltaic system through a Modbus protocol.

3. The distributed photovoltaic local communication device according to claim 2, wherein: The local communication device further comprises a box body (18), the photovoltaic module (6) is installed at the top end of the box body (18), and the inverter (7), the transformer (8), the data collector (9), the data input module (10), the address allocation module (11), the storage data module (12), the signal converter (13), the power divider (14), the first signal coupler (15), the second signal coupler (16) and the LPWAN radio frequency module (17) are all arranged in the box body (18).

4. The distributed photovoltaic local communication device according to claim 3, wherein: The box body (18) is further provided with a modular mounting groove (19) at the top, used for quickly mounting or replacing the device modules.

5. The distributed photovoltaic local communication device according to claim 4, wherein: The box body (18) is provided with a state indicating lamp (20) at the front side, used for displaying the working state of the device.

6. The distributed photovoltaic local communication device according to claim 5, wherein: The box body (18) is provided with a heat dissipation opening (21) at the upper side and the lower side, and a filter screen (22) is arranged in the heat dissipation opening (21).

7. The distributed photovoltaic local communication device according to claim 6, wherein: The box body (18) is provided with a connecting rod (23) and a handle (24) at the rear side and penetrates the box body (18).

8. The distributed photovoltaic local communication device according to claim 7, wherein: The box body (18) is fixed with mounting lugs (25), a connecting bolt is connected through each mounting lug (25), and the box body (18) is provided with a protective coating (26) outside.

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