Intelligent control terminal of low-voltage power distribution cabinet based on photovoltaic inverter

Abstract

The application relates to the technical field of power distribution control, in particular to an intelligent control terminal of a low-voltage power distribution cabinet based on a photovoltaic inverter, which solves the problems that the intelligent control terminal in the existing low-voltage power distribution cabinet is inconvenient for reasonable distribution of photovoltaic power generation when monitoring and controlling the photovoltaic power generation, and is inconvenient for electrical monitoring and stable heat dissipation when the intelligent control terminal is running, and the intelligent control terminal comprises a low-voltage power distribution cabinet, a power connection control mechanism is arranged on the inner side of the low-voltage power distribution cabinet, a control terminal main body is arranged on the upper end of the power connection control mechanism, a photovoltaic inverter is arranged above the control terminal main body, and an electrical detection mechanism is arranged between the control terminal main body and the photovoltaic inverter. The photovoltaic inverter and the intelligent control terminal in the low-voltage power distribution cabinet are subjected to electrical detection, so that the operation safety can be effectively improved, the heat dissipation stability during running can be conveniently maintained, and the intelligent control terminal is convenient for reasonably controlling and distributing the electric energy of photovoltaic power generation.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of power distribution control, and particularly relates to an intelligent control terminal of a low-voltage power distribution cabinet based on a photovoltaic inverter. BACKGROUND

[0002] The power distribution cabinet is a general term of an electric control center, which distributes the electric energy distributed by the upper-level power distribution equipment to the nearby load, and provides protection, monitoring and control for the nearby load. The power distribution cabinet is usually provided with an intelligent control terminal for protecting the circuit, monitoring the voltage, current and frequency of the circuit and displaying the data. When the electric energy generated by photovoltaic power generation is distributed and controlled, the photovoltaic inverter needs to be arranged on the side of the intelligent control terminal.

[0003] The intelligent control terminal in the existing low-voltage power distribution cabinet is inconvenient for reasonable distribution of photovoltaic power generation when the photovoltaic power generation is monitored and controlled, and is inconvenient for electrical monitoring and stable heat dissipation when the intelligent control terminal operates. Therefore, the existing requirements are not met, and therefore the application provides an intelligent control terminal of a low-voltage power distribution cabinet based on a photovoltaic inverter. SUMMARY

[0004] The application aims to provide an intelligent control terminal of a low-voltage power distribution cabinet based on a photovoltaic inverter, so as to solve the problem that the intelligent control terminal in the existing low-voltage power distribution cabinet is inconvenient for reasonable distribution of photovoltaic power generation when the photovoltaic power generation is monitored and controlled, and is inconvenient for electrical monitoring and stable heat dissipation when the intelligent control terminal operates.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme.

[0006] An intelligent control terminal of a low-voltage power distribution cabinet based on a photovoltaic inverter, comprising a low-voltage power distribution cabinet, a power connection control mechanism is arranged on the inner side of the low-voltage power distribution cabinet, a control terminal body is arranged on the upper end of the power connection control mechanism, a photovoltaic inverter is arranged above the control terminal body, an electrical detection mechanism is arranged between the control terminal body and the photovoltaic inverter, and the low-voltage power distribution cabinet comprises a power distribution cabinet body; a cabinet door is rotatably connected to the front end face of the power distribution cabinet body; a plurality of indicator lights are fixedly arranged on the front end face of the cabinet door.

[0007] The control terminal body comprises a terminal shell, the terminal shell is fixedly connected with the power distribution cabinet body, a sealing cover is fixedly arranged on the front end face of the terminal shell, an embedded display screen is fixedly arranged on the middle part of the front end face of the sealing cover, serial ports are arranged at both ends of the terminal shell, a 4G interface is arranged above one of the serial ports, a positioning interface is arranged above the 4G interface, and a power supply wiring port is arranged above the other serial port.

[0008] The electrical detection mechanism comprises a detection box fixedly connected with the power distribution cabinet body, a circuit board is installed on the inner side of the detection box, a plurality of power connection columns are installed on the rear end face of the circuit board, a conductive metal frame is installed on the outer side of the rear end of each power connection column, and an arc-shaped contact seat is slidably connected to one end of the conductive metal frame.

[0009] Preferably, the electrical detection mechanism further comprises an insulating cover fixedly connected with the front end face of the detection box, a display screen is fixedly installed on the front end face of the insulating cover, and an insulating pad is arranged on the inner wall of the detection box.

[0010] Preferably, the low-voltage power distribution cabinet further comprises a ring-shaped ventilation cover fixedly connected with the outer side of the power distribution cabinet body, a partitioning insulating plate is fixedly installed on the inner side of the power distribution cabinet body, a plurality of flow guide sleeves are installed on the inner side of the upper end of the ring-shaped ventilation cover, a filter mounting seat is installed on each of the two sides of the ring-shaped ventilation cover, a plurality of filter cartridges are inserted into the inner side of each filter mounting seat, a second air-permeable plate is fixedly installed on the inner side of the bottom end of the power distribution cabinet body, and two fan boxes are fixedly installed on the inner side of the bottom end of the ring-shaped ventilation cover.

[0011] Preferably, the power connection control mechanism comprises a device mounting rack fixedly connected with the power distribution cabinet body, a power distributor is fixedly installed on the inner side of the bottom end of the device mounting rack, a plurality of power connection air switches are installed on one side of the power distributor, and a plurality of load monitors are installed above the power distributor.

[0012] Preferably, the inner side of the power distribution cabinet body is divided into a device mounting area and a cable coiling area by the partitioning insulating plate, the power connection control mechanism, the control terminal body, the electrical detection mechanism and the photovoltaic inverter are all installed in the device mounting area, and the plurality of power connection air switches and load monitors are electrically connected with the indicator lights.

[0013] Preferably, the ring-shaped ventilation cover is internally provided with a ring-shaped ventilation cavity, the plurality of flow guide sleeves are linearly arranged and fixedly connected with the upper end of the ring-shaped ventilation cover, the device mounting area and the ring-shaped ventilation cavity are connected through the plurality of flow guide sleeves, and the two fan boxes both generate airflows when operating, and the two airflows both pass through the fan boxes, the filter cartridges and the flow guide sleeves and are input to the inner side of the device mounting area.

[0014] Preferably, the control components are arranged in the inner side of the terminal shell and the sealing cover, and the photovoltaic inverter and the embedded display screen are electrically connected with the control components.

[0015] Preferably, the inner side of one end of the conductive metal frame is provided with a spring, one end of the conductive metal frame penetrates the detection box and the insulating pad and is connected with the arc-shaped contact seat through the spring, and the rear ends of the plurality of power connection columns penetrate the middle part of the conductive metal frame and are inserted between the detection box and the insulating pad.

[0016] Preferably, the circuit board is fixedly connected with the detection box through screws, the circuit board is fixedly welded with the plurality of power connection columns, the surface of the circuit board is provided with an electronic ammeter and an electronic voltmeter, and the circuit board is electrically connected with the display screen.

[0017] Preferably, the control terminal body is a smart control terminal, the smart control terminal and the photovoltaic inverter are arranged on the inner side of the low-voltage distribution cabinet and the number of the smart control terminal and the photovoltaic inverter is consistent, the smart control terminal is connected with the plurality of photovoltaic base stations through the photovoltaic inverter, the smart control terminal is electrically connected with the photovoltaic grid-connected cabinet and the fusion terminal, and the fusion terminal controls the power connection of the photovoltaic grid-connected cabinet and the low-voltage distribution cabinet through the power distribution regulation system.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] 1、The low-voltage distribution cabinet and the photovoltaic grid-connected cabinet are used for converting and grid-connecting the photovoltaic power generation of the plurality of photovoltaic base stations, the fusion terminal is used for monitoring the data of the photovoltaic grid-connected cabinet and the low-voltage distribution cabinet, the power distribution regulation system is used for analyzing and processing the data obtained by the fusion terminal, and then the instructions are transmitted to the photovoltaic grid-connected cabinet and the low-voltage distribution cabinet through 4G or wireless transmission, so that the photovoltaic power generation of the plurality of photovoltaic base stations can be reasonably distributed, the control components arranged in the terminal housing are correspondingly connected with the plurality of power connection air switches and the load monitors, the load of the line of the plurality of power connection air switches can be monitored through the load monitor and the data can be transmitted to the terminal housing, then the load data is processed through the control components and is reasonably distributed through the power distributor, and the smart control of the control terminal body on the alternating current converted by the photovoltaic inverter is realized.

[0020] 2、The circuit board and the plurality of conductive metal frames are connected through the power connection columns, the detection box can tightly contact the surfaces of the terminal housing and the photovoltaic inverter through the spring, the electronic ammeter and the electronic voltmeter are arranged on the circuit board, the circuit board can monitor the electrical properties of the surfaces of the terminal housing and the photovoltaic inverter in real time through the power connection columns, the conductive metal frames and the arc-shaped contact seat in turn and display the monitoring results on the display screen, and the operation safety of the low-voltage distribution cabinet is effectively improved.

[0021] 3、The application separates the inner side of the power distribution cabinet body into the device installation area and the cable coiling area by the partition insulation plate, the device installation area can effectively protect the electrical control mechanism, the control terminal body, the electrical detection mechanism and the photovoltaic inverter, avoid external environmental interference, two fan boxes can simultaneously extract external air and filter through multiple filter elements and guide through multiple guide sleeves, thereby facilitating the ventilation operation of the device installation area, the first air permeable plate and the second air permeable plate can discharge the water accumulated in the power distribution cabinet body and discharge the input air in one direction, thereby maintaining stable ventilation. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the power connection flow chart of the low-voltage power distribution cabinet of the application;

[0023] Figure 2 It is the structural schematic view of the low-voltage power distribution cabinet of the application;

[0024] Figure 3 It is the installation structure schematic view of the power connection control mechanism of the application;

[0025] Figure 4 It is the structural schematic view of the annular ventilation cover of the application;

[0026] Figure 5 It is the cross-sectional structure schematic view of the partition insulation plate of the application;

[0027] Figure 6 It is the cross-sectional structure schematic view of the annular ventilation cover of the application;

[0028] Figure 7 It is the structural schematic view of the control terminal body of the application;

[0029] Figure 8 It is the structural schematic view of the electrical detection mechanism of the application;

[0030] Figure 9 It is the explosion structural schematic view of the electrical detection mechanism of the application;

[0031] Figure 10 It is the installation structure schematic view of the conductive metal frame of the application.

[0032] In the figure: 1, low-voltage power distribution cabinet; 101, power distribution cabinet body; 102, cabinet door; 103, indicator light; 104, ring-shaped ventilation cover; 105, partitioning insulating plate; 106, fan box; 107, first air-permeable plate; 108, filter mounting seat; 109, flow guide sleeve; 110, second air-permeable plate; 111, filter element; 2, power connection control mechanism; 201, device mounting rack; 202, power connection air switch; 203, load monitor; 204, power distributor; 3, control terminal main body; 301, terminal housing; 302, sealing cover; 303, embedded display screen; 304, positioning interface; 305, 4G interface; 306, serial interface; 307, power connection port; 4, electrical detection mechanism; 401, detection box; 402, insulating cover; 403, display screen; 404, conductive metal rack; 405, arc-shaped contact seat; 406, circuit board; 407, power connection column; 408, insulating pad; 5, photovoltaic inverter. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0034] Please refer to Figures 2 to 6 An embodiment provided by the present application: an intelligent control terminal of a low-voltage power distribution cabinet based on a photovoltaic inverter, comprising a low-voltage power distribution cabinet 1, the low-voltage power distribution cabinet 1 comprising a power distribution cabinet body 101, the front end face of the power distribution cabinet body 101 being rotatably connected with a cabinet door 102, the front end face of the cabinet door 102 being fixedly installed with a plurality of indicator lights 103, the outer side of the power distribution cabinet body 101 being fixedly installed with a ring-shaped ventilation cover 104, the inner side of the power distribution cabinet body 101 being fixedly installed with a partitioning insulating plate 105, the inner side of the power distribution cabinet body 101 being divided into a device mounting area and a cable coiling area through the partitioning insulating plate 105, a power connection control mechanism 2, a control terminal main body 3, an electrical detection mechanism 4 and a photovoltaic inverter 5 being installed in the device mounting area, the power connection control mechanism 2, the control terminal main body 3, the electrical detection mechanism 4 and the photovoltaic inverter 5 being effectively protected through the device mounting area, so as to avoid external environmental interference;

[0035] The inner side of the upper end of the annular ventilation cover 104 is provided with a plurality of flow guide sleeves 109, and the two sides of the annular ventilation cover 104 are provided with filter mounting seats 108. The inner side of each filter mounting seat 108 is inserted with a plurality of filter elements 111. The inner side of the bottom end of the power distribution cabinet body 101 is fixedly provided with a second air permeable plate 110. The inner side of the bottom end of the annular ventilation cover 104 is fixedly provided with two fan boxes 106. A first air permeable plate 107 is arranged between the two fan boxes 106. The annular ventilation cover 104 is internally provided with an annular ventilation cavity. The plurality of flow guide sleeves 109 are linearly arranged and fixedly connected to the upper end of the annular ventilation cover 104. The device mounting area is connected to the annular ventilation cavity through the plurality of flow guide sleeves 109. When the two fan boxes 106 operate, air flows are generated. The two air flows pass through the fan boxes 106, the filter elements 111 and the flow guide sleeves 109 and are input to the inner side of the device mounting area. The two fan boxes 106 can simultaneously extract external air, which is filtered by the plurality of filter elements 111 and guided by the plurality of flow guide sleeves 109 in sequence. Thus, the device mounting area can be conveniently ventilated.

[0036] Referring to Figure 3 The inner side of the low-voltage power distribution cabinet 1 is provided with a power connection control mechanism 2. The power connection control mechanism 2 comprises a device mounting frame 201, which is fixedly connected to the power distribution cabinet body 101. The inner side of the bottom end of the device mounting frame 201 is fixedly provided with a power distributor 204. One side of the power distributor 204 is provided with a plurality of power connection air switches 202. The upper side of the power distributor 204 is provided with a plurality of load monitors 203. The plurality of power connection air switches 202 and the load monitors 203 are electrically connected to the indicator light 103. The load monitors 203 can monitor the load of the lines on the plurality of power connection air switches 202 and transmit data to the terminal housing 301. The load data is processed by the control element and is reasonably distributed by the power distributor 204.

[0037] Referring to Figure 3 and Figure 7The upper end of the power connection control mechanism 2 is provided with a control terminal body 3, and the upper end of the control terminal body 3 is provided with a photovoltaic inverter 5. The control terminal body 3 comprises a terminal shell 301 which is fixedly connected with the power distribution cabinet body 101. A sealing cover 302 is fixedly arranged on the front end face of the terminal shell 301. An embedded display screen 303 is fixedly arranged on the middle part of the front end face of the sealing cover 302. Serial interfaces 306 are arranged on both ends of the terminal shell 301. A 4G interface 305 is arranged above one of the serial interfaces 306. A positioning interface 304 is arranged above the 4G interface 305. A power connection interface 307 is arranged above the other serial interface 306. Control components are arranged in the terminal shell 301 and the sealing cover 302. The photovoltaic inverter 5 and the embedded display screen 303 are electrically connected with the control components. The load data is processed by the control components and is reasonably distributed by the power distributor 204, so that the alternating current converted by the photovoltaic inverter 5 is intelligently controlled by the control terminal body 3.

[0038] Please refer to Figures 7 to 10 An electrical detection mechanism 4 is arranged between the control terminal body 3 and the photovoltaic inverter 5. The electrical detection mechanism 4 comprises a detection box 401 which is fixedly connected with the power distribution cabinet body 101. An electric circuit board 406 is arranged on the inner side of the detection box 401. A plurality of power connection columns 407 are arranged on the rear end face of the electric circuit board 406. A conductive metal frame 404 is arranged on the outer side of the rear end of each power connection column 407. An arc-shaped contact seat 405 is slidably connected to one end of the conductive metal frame 404. An insulating pad 408 is arranged on the inner wall of the detection box 401. A spring is arranged on the inner side of one end of the conductive metal frame 404. One end of the conductive metal frame 404 penetrates through the detection box 401 and the insulating pad 408 and is connected with the arc-shaped contact seat 405 through the spring. The detection box 401 can tightly contact the surface of the terminal shell 301 and the photovoltaic inverter 5 through the spring.

[0039] The rear ends of the plurality of power connection columns 407 penetrate through the middle part of the conductive metal frame 404 and are inserted between the detection box 401 and the insulating pad 408. The electric circuit board 406 is fixedly connected with the detection box 401 through screws. The electric circuit board 406 is fixedly welded with the plurality of power connection columns 407. An insulating cover 402 is fixedly arranged on the front end face of the detection box 401. An embedded display screen 403 is fixedly arranged on the middle part of the front end face of the insulating cover 402. An electronic ammeter and an electronic voltmeter are arranged on the surface of the electric circuit board 406. The electric circuit board 406 is electrically connected with the display screen 403. The electric circuit board 406 can monitor the surface electricity of the terminal shell 301 and the photovoltaic inverter 5 in real time through the power connection columns 407, the conductive metal frame 404 and the arc-shaped contact seat 405 and display the surface electricity through the display screen 403.

[0040] Please refer to Figure 1, the control terminal body 3 is an intelligent control terminal, the intelligent control terminal and the photovoltaic inverter 5 are installed on the inner side of the low-voltage power distribution cabinet 1, and the number of the two is consistent, the intelligent control terminal is connected with the plurality of photovoltaic base stations through the photovoltaic inverter 5, the intelligent control terminal is electrically connected with the photovoltaic grid-connected cabinet and the fusion terminal, the fusion terminal controls the power-on of the photovoltaic grid-connected cabinet and the low-voltage power distribution cabinet through the power distribution network regulation system, converts and connects the photovoltaic power generation of the plurality of photovoltaic base stations through the low-voltage power distribution cabinet 1 and the photovoltaic grid-connected cabinet, and monitors the data of the photovoltaic grid-connected cabinet and the low-voltage power distribution cabinet 1 through the fusion terminal.

[0041] In summary, when the photovoltaic power generation is regulated, the intelligent control terminal and the photovoltaic inverter 5 are installed on the inner side of the low-voltage power distribution cabinet 1, so that the low-voltage power distribution cabinet 1 is electrically connected with the plurality of photovoltaic base stations, the photovoltaic power generation of the plurality of photovoltaic base stations is converted and connected through the low-voltage power distribution cabinet 1 and the photovoltaic grid-connected cabinet, and the data of the photovoltaic grid-connected cabinet and the low-voltage power distribution cabinet 1 is monitored through the fusion terminal, the data obtained by the fusion terminal is analyzed and processed by the power distribution network regulation system, and then the instructions are transmitted to the photovoltaic grid-connected cabinet and the low-voltage power distribution cabinet 1 by 4G or wireless transmission, so that the photovoltaic power generation of the plurality of photovoltaic base stations can be reasonably distributed;

[0042] When the low-voltage power distribution cabinet 1 is operated, the control components provided in the terminal housing 301 are correspondingly connected with the plurality of power-on air switches 202 and the load monitor 203, the direct current generated by the photovoltaic power generation of the plurality of photovoltaic base stations is converted into alternating current through the photovoltaic inverter 5, the load of the line on the plurality of power-on air switches 202 can be monitored through the load monitor 203 and the data is transmitted to the terminal housing 301, then the load data is processed through the control components and is reasonably distributed through the power distributor 204, so that the alternating current converted by the photovoltaic inverter 5 is intelligently controlled by the control terminal body 3, and the electrical detection mechanism 4 is installed between the control terminal body 3 and the photovoltaic inverter 5;

[0043] Specifically, a plurality of conductive metal frames 404 are installed on the inner side of the detection box 401, and the circuit board 406 and the plurality of conductive metal frames 404 are connected through the power-on column 407, one end of the conductive metal frame 404 penetrates the detection box 401 and is connected with the arc-shaped contact seat 405 through the spring, so that the detection box 401 can tightly contact the surface of the terminal housing 301 and the photovoltaic inverter 5 through the spring, an electronic ammeter and an electronic voltmeter are provided on the circuit board 406, so that the circuit board 406 can monitor the surface electrical property of the terminal housing 301 and the photovoltaic inverter 5 in real time through the power-on column 407, the conductive metal frame 404 and the arc-shaped contact seat 405 and display the data on the display screen 403, effectively improving the operation safety of the personnel on the low-voltage power distribution cabinet 1;

[0044] The inside of the power distribution cabinet body 101 is fixedly installed with a partition insulation plate 105, so that the partition insulation plate 105 partitions the inside of the power distribution cabinet body 101 into a device installation area and a cable coiling area, and the device installation area can effectively protect the electrical control mechanism 2, the control terminal body 3, the electrical detection mechanism 4 and the photovoltaic inverter 5 from external environmental interference, specifically, the inside of the annular ventilation cover 104 is provided with an annular ventilation cavity, the two fan boxes 106 can simultaneously extract external air to the inside of the annular ventilation cavity and sequentially pass through the multiple filter elements 111 for filtering and the multiple flow guide sleeves 109 for flow guiding, thereby facilitating the ventilation operation of the device installation area, the second air-permeable plate 110 and the first air-permeable plate 107 are both installed at the bottom end of the power distribution cabinet body 101, so that when the first air-permeable plate 107 and the second air-permeable plate 110 discharge the accumulated water in the power distribution cabinet body 101, the input air can be unidirectionally discharged, thereby maintaining stable ventilation.

[0045] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments but can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and it is intended to encompass all changes and modifications that fall within the meaning and scope of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. An intelligent control terminal for a low-voltage distribution cabinet based on a photovoltaic inverter, comprising a low-voltage distribution cabinet (1), characterized in that: The low-voltage distribution cabinet (1) is equipped with a power connection control mechanism (2) on its inner side. A control terminal body (3) is installed on the upper end of the power connection control mechanism (2). A photovoltaic inverter (5) is installed above the control terminal body (3). An electrical detection mechanism (4) is installed between the control terminal body (3) and the photovoltaic inverter (5). The low-voltage distribution cabinet (1) includes a distribution cabinet body (101). A cabinet door (102) is rotatably connected to the front end of the distribution cabinet body (101). Multiple indicator lights (103) are fixedly installed on the front end of the cabinet door (102). The control terminal body (3) includes a terminal housing (301). The terminal housing (301) is fixedly connected to the distribution cabinet body (101). A sealing cover (302) is fixedly installed on the front end of the terminal housing (301). A sealing cover (302) is fixedly installed in the middle of the front end of the sealing cover (302). An embedded display screen (303) is provided with serial port interfaces (306) at both ends of the terminal housing (301). A 4G interface (305) is installed above one of the serial port interfaces (306), and a positioning interface (304) is installed above the 4G interface (305). A power connection port (307) is installed above the other serial port interface (306). The electrical testing mechanism (4) includes a testing box (401). The testing box (401) is fixedly connected to the power distribution cabinet (101). A circuit board (406) is installed on the inner side of the testing box (401). Multiple power connection posts (407) are installed on the rear end face of the circuit board (406). A conductive metal frame (404) is installed on the outer side of the rear end of each power connection post (407). An arc-shaped contact seat (405) is slidably connected to one end of the conductive metal frame (404). The electrical testing mechanism (4) also includes an insulating cover (402) fixedly connected to the front end face of the testing box (401). A display screen (403) is fixedly installed in the middle of the front end face of the insulating cover (402), and an insulating pad (408) is provided on the inner wall of the testing box (401). A spring is provided on the inner side of one end of the conductive metal frame (404). One end of the conductive metal frame (404) passes through the detection box (401) and the insulating pad (408) and is connected to the arc-shaped contact seat (405) by the spring. The rear ends of the plurality of electrical terminals (407) all pass through the middle of the conductive metal frame (404) and are inserted between the detection box (401) and the insulating pad (408). The circuit board (406) is fixedly connected to the detection box (401) by screws. The circuit board (406) is welded and fixed to multiple power terminals (407). The surface of the circuit board (406) is provided with an electronic ammeter and an electronic voltmeter. The circuit board (406) is electrically connected to the display screen (403).

2. The intelligent control terminal for a low-voltage distribution cabinet based on a photovoltaic inverter according to claim 1, characterized in that: The low-voltage distribution cabinet (1) also includes an annular ventilation hood (104) fixedly connected to the outside of the distribution cabinet body (101). A partition insulation plate (105) is fixedly installed on the inside of the distribution cabinet body (101). Multiple flow guide sleeves (109) are installed on the inner side of the upper end of the annular ventilation hood (104). Filter mounting seats (108) are installed on both sides of the annular ventilation hood (104). Multiple filter elements (111) are inserted into the inner side of each filter mounting seat (108). A second ventilation plate (110) is fixedly installed on the inner side of the bottom end of the distribution cabinet body (101). Two fan boxes (106) are fixedly installed on the inner side of the bottom end of the annular ventilation hood (104). A first ventilation plate (107) is installed between the two fan boxes (106).

3. The intelligent control terminal for a low-voltage distribution cabinet based on a photovoltaic inverter according to claim 2, characterized in that: The power connection control mechanism (2) includes a device mounting bracket (201), which is fixedly connected to the power distribution cabinet (101). A power distributor (204) is fixedly installed on the inner side of the bottom end of the device mounting bracket (201). Multiple power-connecting air switches (202) are installed on one side of the power distributor (204), and multiple load monitors (203) are installed above the power distributor (204).

4. The intelligent control terminal for a low-voltage distribution cabinet based on a photovoltaic inverter according to claim 3, characterized in that: The inner side of the power distribution cabinet (101) is divided into a device installation area and a cable winding area by a partition insulation plate (105). The power connection control mechanism (2), the control terminal body (3), the electrical detection mechanism (4) and the photovoltaic inverter (5) are all installed in the device installation area. Multiple power connection air switches (202) and load monitors (203) are electrically connected to the indicator lights (103).

5. The intelligent control terminal for a low-voltage distribution cabinet based on a photovoltaic inverter according to claim 4, characterized in that: The annular ventilation hood (104) has an annular ventilation cavity inside. Multiple flow guide sleeves (109) are arranged linearly and fixedly connected to the upper end of the annular ventilation hood (104). The device mounting area and the annular ventilation cavity are connected through multiple flow guide sleeves (109). When the two fan boxes (106) are running, they both generate airflow. Both airflows pass through the fan box (106), filter element (111) and flow guide sleeves (109) and are input to the inner side of the device mounting area.

6. The intelligent control terminal for a low-voltage distribution cabinet based on a photovoltaic inverter according to claim 5, characterized in that: The terminal housing (301) and the sealing cover (302) are equipped with control components inside, and the photovoltaic inverter (5) and the embedded display screen (303) are electrically connected to the control components.

7. The intelligent control terminal for a low-voltage distribution cabinet based on a photovoltaic inverter according to claim 1, characterized in that: The main body (3) of the control terminal is an intelligent control terminal. The intelligent control terminal and the photovoltaic inverter (5) are installed inside the low-voltage distribution cabinet (1) and the number of the two is the same. The intelligent control terminal is connected to multiple photovoltaic base stations through the photovoltaic inverter (5). The intelligent control terminal is electrically connected to the photovoltaic grid-connected cabinet and the fusion terminal. The fusion terminal controls the power connection of the photovoltaic grid-connected cabinet and the low-voltage distribution cabinet through the distribution network control system.

Images