Electric leakage protection device for photovoltaic power station

Abstract

The utility model discloses an electric leakage protection device for a photovoltaic power station, which comprises a base, the upper surface of the base is fixedly connected with an insulating base, the upper surface of the insulating base is fixedly connected with a protection box, the front surface of the protection box is hinged with a protection door through a hinge, the left side surface of the protection box is fixedly communicated with a wiring board, and the wiring board is fixedly connected with a power supply. A signboard is arranged on the back face of the protection box, and the front face of the signboard is fixedly connected with the back face of the protection box. According to the utility model, parameters such as a leakage current threshold value, leakage time and the like of the leakage protection device can be set through the touch control display, when the detected leakage current exceeds a set value, the device can rapidly cut off a power supply to prevent accidents, and when the photovoltaic power station is used, the current detector and the voltage detector are used to detect the leakage current. The output current and voltage of the photovoltaic power station can be monitored in real time, and abnormal conditions such as overload, underload or voltage fluctuation in the system can be found in time, so that measures are taken to avoid system faults.

Description

Technical Field

[0001] This application relates to the field of photovoltaic power plants, and in particular to a leakage current protection device for photovoltaic power plants. Background Technology

[0002] A photovoltaic (PV) power station, also known as a solar power plant, is a power generation facility that uses solar panels to directly convert sunlight into electricity. It is a renewable energy technology that is environmentally friendly and helps reduce dependence on fossil fuels and greenhouse gas emissions. PV power stations can directly provide electricity to the grid or provide electricity to remote areas, islands, and other places that cannot be connected to the grid. PV power stations can be combined with agricultural facilities to achieve sustainable agricultural production.

[0003] The core equipment of a photovoltaic power station is the solar panel, which converts solar energy into electrical energy and then converts direct current into alternating current through a grid-connected inverter before transmitting it to the power grid. However, there is a risk of accidental leakage during the operation of a photovoltaic power station. Leakage can lead to equipment damage, power system failures, or even electric shock accidents. To address this issue, we propose a leakage protection device for photovoltaic power stations. Utility Model Content

[0004] The purpose of this invention is to provide a leakage current protection device for photovoltaic power plants to solve the problems mentioned in the background art.

[0005] The embodiments of this application adopt the following technical solutions:

[0006] A leakage current protection device for a photovoltaic power station includes a base, an insulating base fixedly connected to the upper surface of the base, a protective box fixedly connected to the upper surface of the insulating base, a protective door hinged to the front of the protective box, a cable tray fixedly connected to the left side of the protective box, an identification plate on the back of the protective box, the front of the identification plate fixedly connected to the back of the protective box, a lamp holder fixedly connected to the inner top wall of the protective box, a lighting lamp fixedly connected to the bottom of the lamp holder, an electrical mounting frame fixedly connected to the inner wall of the protective box, a processing actuator fixedly connected to the inner wall of the electrical mounting frame, a touch display fixedly connected to the front of the processing actuator, a current detector fixedly connected to the inner wall of the electrical mounting frame, and a voltage detector fixedly connected to the inner wall of the electrical mounting frame.

[0007] Preferably, the upper surface of the base has four fixing grooves, and the upper surface of each fixing groove has a positioning hole.

[0008] Preferably, a warning sign is fixedly connected to the front of the protective door, and a set of observation windows are provided on the front of the protective door.

[0009] Preferably, the left and right sides of the protective box are provided with heat dissipation vents, and dust covers are fixedly connected to the two sides of the two heat dissipation vents that are far apart from each other. Cooling fans are fixedly connected to the two sides of the two dust covers that are close to each other, and a heat dissipation plate is fixedly connected to the back of the protective box.

[0010] Preferably, a temperature sensor is fixedly connected to the inner bottom wall of the protective box, and the temperature sensor is electrically connected to the cooling fan via a wire.

[0011] Preferably, a latch is fixedly connected to the front of the protective door, and a protective top is fixedly connected to the upper surface of the protective box.

[0012] The above-described technical solutions adopted in the embodiments of this application can achieve the following beneficial effects:

[0013] Firstly, this device allows users to set parameters such as the leakage current threshold and leakage time of the leakage protection device via a touch display. When the detected leakage current exceeds the set value, the device can quickly cut off the power supply to prevent accidents. When the photovoltaic power station is in use, the output current and voltage of the photovoltaic power station can be monitored in real time through current and voltage detectors to promptly detect abnormalities in the system, such as overload, underload, or voltage fluctuations, and thus take measures to avoid system failures.

[0014] Secondly, when the actuator detects a leakage current, it can promptly disconnect the photovoltaic power station from the power grid, thus providing leakage protection for the photovoltaic power station. This enables real-time monitoring and timely response, thereby preventing potential electrical faults, reducing the risk of equipment damage, and extending the service life of electrical equipment in the photovoltaic power station, making it highly practical. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 Here is a three-dimensional structural diagram of the leakage protection device for photovoltaic power stations according to this utility model;

[0017] Figure 2 See: A rear-view three-dimensional structural diagram of the leakage protection device for photovoltaic power stations according to this utility model;

[0018] Figure 3 The present invention provides a three-dimensional structural schematic diagram of the actuator in the leakage current protection device for photovoltaic power stations.

[0019] Figure 4The diagram shows the three-dimensional structure of the temperature sensor in the leakage protection device for photovoltaic power stations of this utility model.

[0020] In the diagram: 1. Base; 2. Insulating base; 3. Protective box; 4. Protective door; 5. Observation window; 6. Protective top; 7. Lock; 8. Cable management board; 9. Warning sign; 10. Heat dissipation vent; 11. Dust cover; 12. Identification sign; 13. Fixing slot; 14. Temperature sensor; 15. Positioning hole; 16. Heat sink; 17. Lamp holder; 18. Lighting lamp; 19. Electrical mounting bracket; 20. Touch screen display; 21. Processing actuator; 22. Current detector; 23. Voltage detector; 24. Cooling fan. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0023] Please see Figure 1-4 This utility model provides a technical solution for a leakage current protection device for photovoltaic power plants:

[0024] A leakage current protection device for a photovoltaic power station includes a base 1, an insulating base 2 fixedly connected to the upper surface of the base 1, a protective box 3 fixedly connected to the upper surface of the insulating base 2, a protective door 4 hinged to the front of the protective box 3, a cable tray 8 fixedly connected to the left side of the protective box 3, an identification plate 12 on the back of the protective box 3, the front of the identification plate 12 fixedly connected to the back of the protective box 3, a lamp holder 17 fixedly connected to the inner top wall of the protective box 3, a lighting lamp 18 fixedly connected to the bottom surface of the lamp holder 17, an electrical mounting bracket 19 fixedly connected to the inner wall of the protective box 3, and a processing actuator 21 fixedly connected to the inner wall of the electrical mounting bracket 19. A touch screen display 20 is fixedly connected to the front of the actuator 21, a current detector 22 is fixedly connected to the inner wall of the electrical mounting bracket 19, and a voltage detector 23 is fixedly connected to the inner wall of the electrical mounting bracket 19. Specifically, the leakage current threshold, leakage time and other parameters of the leakage protection device can be set through the touch screen display 20. In use, the output current and voltage of the photovoltaic power station can be continuously detected in real time through the current detector 22 and the voltage detector 23, and the detected current and voltage signals can be transmitted to the processing actuator 21. This can promptly detect abnormal conditions in the system, such as overload, underload or voltage fluctuation, and thus take measures to avoid system failure.

[0025] In this embodiment, four fixing slots 13 are provided on the upper surface of the base 1, and each fixing slot 13 has a positioning hole 15 on its upper surface. The fixing slots 13 and positioning holes 15 facilitate the installation of the device by the staff. A warning sign 9 is fixedly connected to the front of the protective door 4, and a set of observation windows 5 are provided on the front of the protective door 4. The warning sign 9 can warn unauthorized personnel and prevent accidental contact. Heat dissipation vents 10 are provided on the left and right sides of the protective box 3. Dust covers 11 are fixedly connected to the sides of the two heat dissipation vents 10 that are far apart from each other, and cooling fans 24 are fixedly connected to the sides of the two dust covers 11 that are close to each other. A heat dissipation plate 16 is fixedly connected to the back of the protective box 3. The cooling fans 24 and heat dissipation plate 16 can improve the heat dissipation efficiency of the device.

[0026] In this embodiment, a temperature sensor 14 is fixedly connected to the inner bottom wall of the protective box 3. The temperature sensor 14 is electrically connected to the cooling fan 24 through a wire. The temperature sensor 14 can control the on / off state of the cooling fan 24, thereby saving power. A latch 7 is fixedly connected to the front of the protective door 4, and a protective top 6 is fixedly connected to the upper surface of the protective box 3. The protective top 6 can provide protection for the protective box 3.

[0027] Working principle: When the photovoltaic power station uses the leakage current protection device, the user first moves the device to the location of use and installs it through the fixing slot 13 and positioning hole 15. Then, according to the installation requirements, the touch display 20, the processing actuator 21, the current detector 22, and the voltage detector 23 are installed in the electrical mounting frame 19 and connected to the power supply. At the same time, the leakage current threshold, leakage time, and other parameters of the leakage current protection device are set through the touch display 20. During use, the current detector 22 and the voltage detector 23 continuously detect the output current and voltage of the photovoltaic power station in real time and transmit the detected current and voltage signals to the processing actuator 21. When the processing actuator 21 determines that there is a leakage current, it disconnects the photovoltaic power station from the power grid to realize the leakage current protection of the photovoltaic power station.

[0028] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A leakage current protection device for photovoltaic power stations, comprising a base (1), characterized in that: An insulating base (2) is fixedly connected to the upper surface of the base (1). A protective box (3) is fixedly connected to the upper surface of the insulating base (2). A protective door (4) is hinged to the front of the protective box (3). A cable tray (8) is fixedly connected to the left side of the protective box (3). A sign (12) is provided on the back of the protective box (3). The front of the sign (12) is fixedly connected to the back of the protective box (3). A lamp holder (17) is fixedly connected to the inner top wall of the protective box (3). A lighting lamp (18) is fixedly connected to the bottom surface of the lamp holder (17). An electrical mounting bracket (19) is fixedly connected to the inner wall of the protective box (3). A processing actuator (21) is fixedly connected to the inner wall of the electrical mounting bracket (19). A touch display (20) is fixedly connected to the front of the processing actuator (21). A current detector (22) is fixedly connected to the inner wall of the electrical mounting bracket (19). A voltage detector (23) is fixedly connected to the inner wall of the electrical mounting bracket (19).

2. The leakage current protection device for a photovoltaic power station according to claim 1, characterized in that: The upper surface of the base (1) is provided with four fixing grooves (13), and each fixing groove (13) is provided with a positioning hole (15) on its upper surface.

3. The leakage current protection device for a photovoltaic power station according to claim 1, characterized in that: A warning sign (9) is fixedly connected to the front of the protective door (4), and a set of observation windows (5) are opened on the front of the protective door (4).

4. A leakage current protection device for a photovoltaic power station according to claim 1, characterized in that: The left and right sides of the protective box (3) are provided with heat dissipation vents (10). Dust covers (11) are fixedly connected to the two sides of the heat dissipation vents (10) that are far apart from each other. Cooling fans (24) are fixedly connected to the two sides of the dust covers (11) that are close to each other. A heat dissipation plate (16) is fixedly connected to the back of the protective box (3).

5. A leakage current protection device for a photovoltaic power station according to claim 1, characterized in that: A temperature sensor (14) is fixedly connected to the inner bottom wall of the protective box (3), and the temperature sensor (14) is electrically connected to the cooling fan (24) through a wire.

6. A leakage current protection device for a photovoltaic power station according to claim 1, characterized in that: The front of the protective door (4) is fixedly connected with a latch (7), and the upper surface of the protective box (3) is fixedly connected with a protective top (6).

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