Digital safety intelligent protection device

Abstract

The utility model discloses a digital safety intelligent protection device, and relates to the technical field of photovoltaic water plant safety protection. The digital safety intelligent protection device comprises an energy storage device, a plurality of photovoltaic power generation panels, a rectifier, a switching circuit, an image acquisition device and a central control platform. The photovoltaic power generation panel can convert light energy into electric energy to be stored in the energy storage equipment. The switching circuit can control the on / off of a circuit between the energy storage device and the plurality of electric devices and control the on / off of a circuit between the rectifier and the plurality of electric devices. The image acquisition device can acquire image information of the plurality of photovoltaic power generation panels. The central control platform can detect the voltage state of the energy storage equipment, receive image information, and control the operation of the switching circuit according to the voltage state and the image information of the energy storage equipment. The utility model aims to predict the power generation of a plurality of photovoltaic power generation panels so as to adjust the control strategy of the switching circuit for protection, and can improve the stability and safety of power supply.

Description

Technical Field

[0001] The utility model relates to the technical field of safety protection of photovoltaic water plants, and in particular to a digital safety intelligent protection device. Background Art

[0002] With the continuous development of new energy technologies, photovoltaic water plants have received widespread attention because they can utilize idle space to install multiple photovoltaic panels to generate electricity, thereby reducing dependence on external power grids.

[0003] However, photovoltaic power generation from multiple photovoltaic panels is easily affected by various factors such as sunlight intensity, seasonal changes, and obstructions. As a result, photovoltaic power generation is prone to fluctuations, affecting the stability and safety of photovoltaic water plants' power supply through photovoltaic power generation. Utility Model Content

[0004] The main purpose of the utility model is to provide a digital safety intelligent protection device, aiming to improve the stability and safety of power supply of photovoltaic water plants.

[0005] To achieve the above-mentioned purpose, the digital safety intelligent protection device proposed by the utility model comprises:

[0006] Energy storage equipment;

[0007] A plurality of photovoltaic power generation panels, wherein power output ends of the plurality of photovoltaic power generation panels are electrically connected to the energy storage device, and the photovoltaic power generation panels are used to convert light energy into electrical energy and store it in the energy storage device;

[0008] A rectifier, wherein the input end of the rectifier is electrically connected to the input end of the external AC power supply, and the rectifier is used to convert the external AC power supply into a DC power supply output;

[0009] A switch circuit, wherein a first input end of the switch circuit is electrically connected to the energy storage device, and a second input end of the switch circuit is electrically connected to an output end of the rectifier; a plurality of output ends of the switch circuit are electrically connected to a plurality of electrical devices; the switch circuit is used to control the on / off of the circuit between the energy storage device and the plurality of electrical devices, and is used to control the on / off of the circuit between the rectifier and the plurality of electrical devices;

[0010] An image acquisition device, the image acquisition device is used to acquire image information of the plurality of photovoltaic panels;

[0011] A central control platform, the central control platform is electrically connected to the detection end of the energy storage device and the controlled end of the switch circuit respectively, and the central control platform is also communicatively connected to the image acquisition device; the central control platform is used to detect the voltage state of the energy storage device and receive the image information, and control the operation of the switch circuit according to the voltage state of the energy storage device and the image information.

[0012] In one embodiment, the digital security intelligent protection device further comprises:

[0013] A plurality of DC circuit breakers, wherein the first ends of the plurality of DC circuit breakers are electrically connected to the plurality of photovoltaic power generation panels, the second ends of the plurality of DC circuit breakers are electrically connected to the energy storage device, and the controlled ends of the plurality of DC circuit breakers are electrically connected to the central control platform;

[0014] An AC circuit breaker, wherein a first end of the AC circuit breaker is electrically connected to an external AC power input end, a second end of the AC circuit breaker is electrically connected to the switch circuit, and a controlled end of the AC circuit breaker is electrically connected to the central control platform.

[0015] In one embodiment, the digital safety intelligent protection device also includes a voltage conversion circuit, wherein multiple input ends of the voltage conversion circuit are connected to multiple output ends of the switch circuit, and multiple output ends of the voltage conversion circuit are electrically connected to multiple electrical devices.

[0016] In one embodiment, the central control platform includes a control circuit, a display component, an alarm component and a first wireless communication circuit; the control circuit is electrically connected to the display component, the alarm component and the first wireless communication circuit respectively.

[0017] In one embodiment, the image acquisition device comprises:

[0018] A camera component, wherein a controlled end of the camera component is communicatively connected to the first wireless communication circuit, and the camera component is disposed at a plurality of inspection points of the photovoltaic panels to obtain first image information of the inspection point area;

[0019] An inspection drone, the inspection drone comprising a drone body and a main control board, a flight control component, a camera component and a second wireless communication circuit arranged on the drone body; the main control board is electrically connected to the flight control component, the camera component and the second wireless communication circuit respectively; the second wireless communication circuit is communicatively connected to the first wireless communication circuit; the inspection drone is used to obtain second image information of the flight inspection area.

[0020] In one embodiment, the digital safety intelligent protection device also includes a water quality detection device; wherein the water quality detection device is arranged at the water supply network management, and the water quality detection device includes a water quality sensor, a signal modulation circuit, an analog-to-digital conversion circuit, a controller and a third wireless communication circuit; wherein the output end of the water quality sensor is electrically connected to the input end of the signal modulation circuit, the output end of the signal modulation circuit is electrically connected to the input end of the analog-to-digital conversion circuit, the output end of the analog-to-digital conversion circuit is electrically connected to the controller, and the controller is electrically connected to the third wireless communication circuit; the third wireless communication circuit is communicatively connected to the first wireless communication circuit; the water quality sensor is used to collect water quality signals;

[0021] The control circuit is also used to control the operation of the display component and the alarm component according to the water quality signal.

[0022] In one embodiment, the switch circuit comprises:

[0023] A first electronic switch, wherein an input end of the first electronic switch is electrically connected to the energy storage device; and a controlled end of the first electronic switch is electrically connected to the central control platform;

[0024] a second electronic switch, wherein an input end of the second electronic switch is electrically connected to the rectifier; and a controlled end of the second electronic switch is electrically connected to the central control platform;

[0025] A multi-way selection switch, wherein the first input end of the multi-way selection switch is electrically connected to the output end of the first electronic switch, the second input end of the multi-way selection switch is electrically connected to the output end of the second electronic switch, and the multiple output ends of the multi-way selection switch are used for electrical connection of multiple electrical devices; the controlled end of the multi-way selection switch is electrically connected to the central control platform.

[0026] In one embodiment, the flight control assembly includes a positioner, an angle sensor, an acceleration sensor, a wind speed sensor, an altitude sensor and a flight controller, and the flight controller is electrically connected to the main control board, the positioner, the angle sensor, the acceleration sensor, the wind speed sensor and the altitude sensor respectively;

[0027] The camera assembly includes an infrared thermal imaging camera, a color visible light camera, a black and white visible light camera and a steering drive circuit; the infrared thermal imaging camera, the color visible light camera, the black and white visible light camera and the steering drive circuit are electrically connected to the main control board respectively; the steering drive circuit is mechanically connected to the rotating mechanism of the inspection drone, and is used to drive the rotation of the rotating mechanism of the inspection drone to adjust the shooting angles of the infrared thermal imaging camera, the color visible light camera and the black and white visible light camera.

[0028] In one embodiment, the signal modulation circuit includes a first amplifier, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor and a third capacitor; the analog-to-digital conversion circuit includes an analog-to-digital converter;

[0029] Among them, the output end of the water quality sensor, one end of the first resistor, and one end of the first capacitor are electrically connected to the inverting input end of the first amplifier; the other end of the first resistor, the other end of the first capacitor, and the output end of the first amplifier are electrically connected to one end of the second resistor, and the other end of the second resistor and one end of the second capacitor are electrically connected to one end of the third resistor; the other end of the third resistor, one end of the fourth resistor, and one end of the third capacitor are electrically connected to the input end of the analog-to-digital converter; the positive input end of the first amplifier, the other end of the second capacitor, the other end of the fourth resistor, and the other end of the third capacitor are grounded; the output end of the analog-to-digital converter is electrically connected to the controller.

[0030] In one embodiment, the steering drive circuit includes a fifth resistor, a sixth resistor, a seventh resistor, a fourth capacitor, a first switch tube, a first diode and a motor;

[0031] Among them, one end of the fifth resistor is electrically connected to the main control board, and the other end of the fifth resistor and one end of the sixth resistor are electrically connected to the controlled end of the first switch tube; the first end of the first switch tube, one end of the motor, and one end of the fourth capacitor are connected to the cathode of the first diode; the other end of the motor, the other end of the fourth capacitor, and the anode of the first diode are connected to the power input end of the steering drive circuit; the second end of the first switch tube is connected to one end of the seventh resistor; the other end of the sixth resistor and the other end of the seventh resistor are grounded.

[0032] The technical solution of the utility model adopts a digital safety intelligent protection device, including an energy storage device, multiple photovoltaic panels, a rectifier, a switching circuit, an image acquisition device and a central control platform. Among them, the central control platform can monitor the voltage state of the energy storage device in real time. When the voltage of the energy storage device is greater than the first preset voltage, the circuit between the energy storage device and the multiple power-consuming devices can be controlled to be turned on, and the circuit between the rectifier and the multiple power-consuming devices can be controlled to be turned off, and then the power supply is switched to the energy storage device. When the voltage of the energy storage device is greater than the second preset voltage and less than the first preset voltage, according to the image information, the central control platform can combine the photovoltaic panel parameter information, historical data and weather forecast information to perform digital intelligent power generation prediction, so as to determine whether the photovoltaic power generation of multiple photovoltaic panels can maintain a stable power supply for multiple power-consuming devices. If a stable power supply can be maintained, the circuit between the energy storage device and the multiple power-consuming devices is controlled to be turned on, and the circuit between the rectifier and the multiple power-consuming devices is controlled to be turned off, and then the power supply is switched to the energy storage device. If stable power supply cannot be maintained, the circuit between the energy storage device and the multiple power-consuming devices is controlled to be turned off, and the circuit between the rectifier and the multiple power-consuming devices is controlled to be turned on, and then the power supply is switched to an external AC power supply, wherein the second preset voltage is less than the first preset voltage. When the voltage of the energy storage device is less than the second preset voltage, the circuit between the energy storage device and the multiple power-consuming devices is controlled to be turned off, and the circuit between the rectifier and the multiple power-consuming devices is controlled to be turned on, and then the power supply is switched to an external AC power supply. In this way, the utility model realizes the refined management of power supply and the digital intelligent prediction of whether the power supply can be maintained stable, which can provide a continuous and stable power supply for the water plant, improve the stability and safety of the power supply of the photovoltaic water plant, and reduce the safety risks that may be caused by unstable power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0034] Figure 1 A structural schematic diagram of an embodiment of a digital safety intelligent protection device provided by the utility model;

[0035] Figure 2 A structural schematic diagram of another embodiment of the digital safety intelligent protection device provided by the utility model;

[0036] Figure 3 A product schematic diagram of an image acquisition device of an embodiment of a digital safety intelligent protection device provided by the utility model;

[0037] Figure 4 A schematic diagram of the structure of a patrol drone of an embodiment of a digital safety intelligent protection device provided by the utility model;

[0038] Figure 5 An electronic circuit diagram of a signal modulation circuit and an analog-to-digital conversion circuit of a water quality detection device in another embodiment of the digital safety intelligent protection device provided by the utility model;

[0039] Figure 6 An electronic circuit diagram of a steering drive circuit for an inspection drone of another embodiment of the digital safety intelligent protection device provided by the utility model.

[0040] Description of Figure Numbers:

[0041]

[0042]

[0043] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0046] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0047] It should be noted that photovoltaic power generation from multiple photovoltaic panels is easily affected by various factors such as sunlight intensity, seasonal changes, and obstructions. The photovoltaic power generation is prone to fluctuations, affecting the stability and safety of power supply to photovoltaic water plants through photovoltaic power generation.

[0048] The utility model provides a digital safety intelligent protection device.

[0049] See also Figure 1 In one embodiment of the present utility model, the digital safety intelligent protection device includes:

[0050] Energy storage device 10;

[0051] In this embodiment, the energy storage device 10 may include a transformer and a battery pack. The battery pack may include a lithium-ion battery. The transformer may convert the electric energy generated by the photovoltaic panel 20 into electric energy that can be stored in the battery pack for storage. In this way, the energy storage device 10 can efficiently store electric energy and release the electric energy for power supply when needed.

[0052] A plurality of photovoltaic panels 20, the power output ends of the plurality of photovoltaic panels 20 are electrically connected to the energy storage device 10, and the photovoltaic panels are used to convert light energy into electrical energy and store it in the energy storage device 10;

[0053] In this embodiment, the photovoltaic power generation panel 20 may include photovoltaic cells, a support structure, connecting wires, a junction box, a reflective layer and a covering layer. Among them, photovoltaic cells are the core components of the photovoltaic power generation panel 20. They directly convert sunlight into electrical energy through the photoelectric effect. The types of photovoltaic cells can be monocrystalline silicon, polycrystalline silicon and amorphous silicon. The supporting structure includes a bracket, a frame and an installation facility, which can fix and support the photovoltaic panel and enable it to be safely installed on the roof of a building, on the ground or other appropriate locations. The connecting wire connects individual photovoltaic cells to form a battery string or parallel connection. The junction box can be located on the back of the photovoltaic panel to centrally manage the electrical connections of the battery and provide waterproof and safety protection. The reflective layer can be installed on the back or around the photovoltaic panel, which can help the photovoltaic panel concentrate more sunlight, thereby improving the power generation efficiency. The covering layer is designed to be transparent, which can protect the surface of the photovoltaic panel from the influence of the environment while ensuring that light energy is effectively transmitted to the surface of the photovoltaic cell.

[0054] A rectifier 30, wherein the input end of the rectifier 30 is electrically connected to the input end of the external AC power source, and the rectifier 30 is used to convert the external AC power source into a DC power source output;

[0055] In this embodiment, the rectifier 30 may include components such as a rectifier bridge, a capacitor, and an inductor, wherein the rectifier bridge may be composed of four or more diodes to convert the negative half cycle of the AC signal into a positive DC signal. The capacitor may smooth the output DC voltage, and the inductor may reduce the ripple of the output voltage.

[0056] A switch circuit 40, wherein a first input end of the switch circuit 40 is electrically connected to the energy storage device 10, and a second input end of the switch circuit 40 is electrically connected to an output end of the rectifier 30; multiple output ends of the switch circuit 40 are electrically connected to multiple electrical devices; the switch circuit 40 is used to control the on / off of the circuit between the energy storage device 10 and the multiple electrical devices, and is used to control the on / off of the circuit between the rectifier 30 and the multiple electrical devices;

[0057] An image acquisition device 50, the image acquisition device 50 is used to acquire image information of a plurality of photovoltaic panels 20;

[0058] The central control platform 60 is electrically connected to the detection end of the energy storage device 10 and the controlled end of the switch circuit 40 respectively, and the central control platform 60 is also communicatively connected to the image acquisition device 50; the central control platform 60 is used to detect the voltage state of the energy storage device 10 and receive image information, and control the operation of the switch circuit 40 according to the voltage state of the energy storage device 10 and the image information.

[0059] In this embodiment, the central control platform 60 can monitor the voltage state of the energy storage device 10 in real time. When the voltage of the energy storage device 10 is greater than the first preset voltage, the circuit between the energy storage device 10 and the multiple power devices can be controlled to be turned on, and the circuit between the rectifier 30 and the multiple power devices can be controlled to be turned off, and then the power supply is switched to the energy storage device 10. When the voltage of the energy storage device 10 is greater than the second preset voltage and less than the first preset voltage, according to the image information, the central control platform 60 can combine the parameter information, historical data and weather forecast information of the photovoltaic power generation panel 20 to perform digital intelligent power generation prediction, so as to determine whether the photovoltaic power generation of the multiple photovoltaic power generation panels 20 can maintain a stable power supply for multiple power devices. If a stable power supply can be maintained, the circuit between the energy storage device 10 and the multiple power devices is controlled to be turned on, and the circuit between the rectifier 30 and the multiple power devices is controlled to be turned off, and then the power supply is switched to the energy storage device 10. If stable power supply cannot be maintained, the circuit between the energy storage device 10 and the multiple power-consuming devices is controlled to be turned off, and the circuit between the rectifier 30 and the multiple power-consuming devices is controlled to be turned on, and then the power supply is switched to an external AC power supply, wherein the second preset voltage is less than the first preset voltage. When the voltage of the energy storage device 10 is less than the second preset voltage, the circuit between the energy storage device 10 and the multiple power-consuming devices is controlled to be turned off, and the circuit between the rectifier 30 and the multiple power-consuming devices is controlled to be turned on, and then the power supply is switched to an external AC power supply. In this way, the present embodiment realizes the refined management of power supply and the digital intelligent prediction of whether the power supply can be maintained stable, predicts the photovoltaic power generation in advance, promptly discovers the problem that the photovoltaic power generation is difficult to maintain the stable power supply of multiple power-consuming devices, and switches the power consumption at the appropriate time to ensure the power supply quality, which can provide a continuous and stable power supply for the water plant, improve the stability and safety of the power supply of the photovoltaic water plant, and reduce the safety risks that may be caused by unstable power supply.

[0060] In an embodiment of the utility model, a plurality of rectifiers 30 may be included, and the switch circuit 40 may adjust the input power of the external power supply by connecting different numbers of rectifiers 30. In this way, when the voltage of the energy storage device 10 is greater than the second preset voltage and less than the first preset voltage, the circuit between the energy storage device 10 and the plurality of electrical devices may be controlled to be connected, the circuit between some rectifiers 30 and the plurality of electrical devices may be controlled to be connected, and the circuit between the remaining rectifiers 30 and the plurality of electrical devices may be disconnected to maintain stable power supply.

[0061] It should be noted that the central control platform 60 may include an algorithm module that can detect the difference between the normal state and the abnormal state of the photovoltaic power generation panel 20. The algorithm module can have a built-in abnormality detection algorithm, such as an algorithm based on statistical methods, a clustering algorithm, or a density-based algorithm, to detect data points that do not conform to the normal mode of the photovoltaic power generation panel 20, thereby discovering abnormal situations. The algorithm module can use a deep learning algorithm, such as a convolutional neural network, a recurrent neural network, or a transformer, to perform feature extraction and pattern recognition on image data, and can accurately detect abnormal situations. If an abnormal situation is found, such as a large area of ​​​​blocking of the photovoltaic panel or damage to the photovoltaic panel, the central control platform 60 can immediately issue an alarm to notify the relevant operation and maintenance personnel to handle it. In this way, this embodiment can also directly protect from the source, that is, directly from the perspective of timely maintenance of multiple photovoltaic power generation panels 20 to improve the efficiency of photovoltaic power generation and improve the stability of photovoltaic power generation.

[0062] It can be understood that when the photovoltaic power generation of multiple photovoltaic panels 20 is sufficient, that is, when there is still surplus after supplying power to the electrical equipment of the photovoltaic water plant and charging the energy storage device 10, the switching circuit 40 can also be used to control the conduction of the path between the energy storage device 10 to feed back electrical energy to the power grid, so as to feed back the excess power generation to the power grid, so as to achieve maximum utilization of photovoltaic power generation.

[0063] In the present utility model, the central control platform 60 can monitor the voltage state of the energy storage device 10 in real time. When the voltage of the energy storage device 10 is greater than the first preset voltage, the circuit between the energy storage device 10 and multiple power-consuming devices can be controlled to be turned on, and the circuit between the rectifier 30 and multiple power-consuming devices can be controlled to be turned off, and then the power supply is switched to the energy storage device 10. When the voltage of the energy storage device 10 is greater than the second preset voltage and less than the first preset voltage, according to the image information, the central control platform 60 can combine the parameter information, historical data and weather forecast information of the photovoltaic power generation panel 20 to perform digital intelligent power generation prediction, so as to determine whether the photovoltaic power generation of multiple photovoltaic power generation panels 20 can maintain a stable power supply to multiple power-consuming devices. If a stable power supply can be maintained, the circuit between the energy storage device 10 and multiple power-consuming devices is controlled to be turned on, and the circuit between the rectifier 30 and multiple power-consuming devices is controlled to be turned off, and then the power supply is switched to the energy storage device 10. If stable power supply cannot be maintained, the circuit between the energy storage device 10 and the multiple power-consuming devices is controlled to be turned off, and the circuit between the rectifier 30 and the multiple power-consuming devices is controlled to be turned on, and then the power supply is switched to an external AC power supply, wherein the second preset voltage is less than the first preset voltage. When the voltage of the energy storage device 10 is less than the second preset voltage, the circuit between the energy storage device 10 and the multiple power-consuming devices is controlled to be turned off, and the circuit between the rectifier 30 and the multiple power-consuming devices is controlled to be turned on, and then the power supply is switched to an external AC power supply. In this way, the utility model realizes the refined management of power supply and the digital intelligent prediction of whether the power supply can be maintained stable, which can provide a continuous and stable power supply for the water plant, improve the stability and safety of the power supply of the photovoltaic water plant, and reduce the safety risks that may be caused by unstable power supply.

[0064] See also Figure 2 In one embodiment of the present utility model, the digital safety intelligent protection device further includes:

[0065] A plurality of DC circuit breakers 71, wherein the first ends of the plurality of DC circuit breakers 71 are electrically connected to the plurality of photovoltaic panels 20, the second ends of the plurality of DC circuit breakers 71 are electrically connected to the energy storage device 10, and the controlled ends of the plurality of DC circuit breakers 71 are electrically connected to the central control platform 60;

[0066] The AC circuit breaker 72 has a first end electrically connected to an external AC power input terminal, a second end electrically connected to the switch circuit 40 , and a controlled end electrically connected to the central control platform 60 .

[0067] In this embodiment, when the central control platform 60 determines that the photovoltaic panel 20 is generating power abnormally based on the image information or the monitored voltage and current information, such as too many obstructions on the surface of the photovoltaic panel resulting in a significant reduction in power generation, or a short circuit in the internal circuit of the photovoltaic panel resulting in excessive current, the DC circuit breaker 71 can be controlled to disconnect the connection between the photovoltaic panel 20 and the energy storage device 10, and the operation and maintenance personnel are notified to conduct troubleshooting and repair before reconnecting the DC circuit breaker 71. When the central control platform 60 determines that the input voltage and current of the external AC power supply are too high based on the monitored voltage and current information, the AC circuit breaker 72 can be controlled to disconnect the connection between the external AC power supply and the rectifier 30, and the operation and maintenance personnel are notified to conduct troubleshooting and repair before reconnecting the AC circuit breaker 72. In this way, this embodiment further ensures the safety of electricity use.

[0068] See also Figure 2 In one embodiment of the utility model, the digital safety intelligent protection device also includes a voltage conversion circuit 80, and multiple input ends of the voltage conversion circuit 80 are connected to multiple output ends of the switch circuit 40, and multiple output ends of the voltage conversion circuit 80 are electrically connected to multiple electrical devices.

[0069] In this embodiment, the voltage conversion circuit 80 may include multiple DC-DC transformers. The DC-DC transformer may include components such as a filter, a switching power supply circuit, and an energy storage element. When the DC-DC transformer is working, the input voltage may be filtered through a filter or an input capacitor to remove possible noise and interference, ensure the stability of the input voltage, and then the voltage conversion is achieved through the switching power supply circuit, which may include a MOSFET, a BJT, or other types of switching devices. The switching state of the switching device may be controlled by an input signal of the control circuit 61 therein, and the duty cycle and frequency of the switching device may be adjusted as needed. By controlling the duty state and duty cycle of the switching device, the input voltage may be boosted to the output voltage, or may be stepped down to the output voltage. In the voltage conversion process, energy storage and release may be achieved through energy storage elements (such as inductors and capacitors). In this way, the present embodiment may output the input power supply to multiple electrical devices after voltage conversion.

[0070] See also Figure 2 In one embodiment of the utility model, the central control platform 60 includes a control circuit 61, a display component 62, an alarm component 63 and a first wireless communication circuit 64; the control circuit 61 is electrically connected to the display component, the alarm component and the first wireless communication circuit 64 respectively.

[0071] In this embodiment, the alarm component 63 may be a light alarm component 63 and / or a sound alarm component 63. The display component 62 may be a liquid crystal display screen, which may display image information, voltage and current information of the energy storage device 10, and decision information of the switch circuit 40 on the display screen.

[0072] It should be noted that the control circuit 61 may include a voltage monitoring module, a data storage and processing module, an image algorithm module, a weather forecast receiving module, an intelligent power generation prediction algorithm module and a power supply stability judgment module. Among them, the voltage monitoring module is used to monitor the voltage of the energy storage device 10 in real time. The data storage and processing module is used to store historical data, including past power generation, power consumption, voltage changes and other information, and process and analyze these data to perform trend prediction and decision support. The image algorithm module can parse image information, and determine the state of the photovoltaic power generation panel 20 through the image information, and control the operation of the DC circuit breaker 71 according to the state of the photovoltaic power generation panel 20. The weather forecast receiving module is used to receive and parse weather forecast information to obtain weather conditions for a period of time in the future, especially parameters that have a greater impact on photovoltaic power generation, such as sunshine intensity, cloud thickness, etc. The intelligent power generation prediction algorithm module can use machine learning or other prediction algorithms to perform digital intelligent power generation prediction based on historical data and real-time weather forecast information to evaluate future power generation capacity. The power supply stability judgment module can determine whether it can stably supply power to multiple power-consuming devices based on the predicted power generation capacity and the current voltage state, and adjust the control strategy of the switch circuit 40 based on the judgment.

[0073] In this embodiment, the control circuit 61 can obtain the voltage state of the energy storage device 10. When the voltage of the energy storage device 10 is greater than the first preset voltage, the circuit between the energy storage device 10 and the multiple power devices can be controlled to be turned on, and the circuit between the rectifier 30 and the multiple power devices can be controlled to be turned off, and the power supply is switched to the energy storage device 10. When the voltage of the energy storage device 10 is greater than the second preset voltage and less than the first preset voltage, the control circuit 61 can control the display component 62 to notify the operation and maintenance personnel, and obtain image information through the first wireless communication circuit 64, and perform digital intelligent power generation prediction based on the image information, as well as in combination with historical data and weather forecast information, so as to determine whether the multiple photovoltaic panels 20 can maintain stable power supply to multiple power devices. If stable power supply can be maintained, the circuit between the energy storage device 10 and the multiple power devices is controlled to be turned on, and the circuit between the rectifier 30 and the multiple power devices is controlled to be turned off, and the power supply is switched to the energy storage device 10. If stable power supply cannot be maintained, the circuit between the energy storage device 10 and the multiple power-consuming devices is controlled to be turned off, and the circuit between the rectifier 30 and the multiple power-consuming devices is controlled to be turned on. At this time, the power supply is switched to an external AC power supply. Here, the display component 62 / alarm component 63 is used to notify the operation and maintenance personnel that the power supply has been switched to an external AC power supply. When the voltage of the energy storage device 10 is less than the second preset voltage, the control circuit 61 controls the circuit between the energy storage device 10 and the multiple power-consuming devices to be turned off, and the circuit between the rectifier 30 and the multiple power-consuming devices is controlled to be turned on. At this time, the power supply is switched to an external AC power supply, and the display component 62 / alarm component 63 is used to remind the operation and maintenance personnel that the power supply has been switched to an external AC power supply. In this way, this embodiment realizes the refined management of power supply and the digital intelligent prediction of whether the power supply can be maintained stable, which can provide a continuous and stable power supply for the water plant, improve the stability and safety of the power supply of the photovoltaic water plant, and reduce the safety risks that may be caused by unstable power supply.

[0074] See also Figure 3 In one embodiment of the present utility model, the image acquisition device 50 includes:

[0075] A camera component 51, a controlled end of the camera component 51 is in communication connection with the first wireless communication circuit 64, and the camera component 51 is arranged at a patrol point of a plurality of photovoltaic panels 20, and is used to obtain first image information of the patrol point area;

[0076] The inspection drone 52 includes a drone body and a main control board, a flight control component, a camera component and a second wireless communication circuit arranged on the drone body; the main control board is electrically connected to the flight control component, the camera component and the second wireless communication circuit respectively; the second wireless communication circuit is communicatively connected to the first wireless communication circuit 64; the inspection drone 52 is used to obtain second image information of the flight inspection area.

[0077] It should be noted that the flight inspection area is generally the area above the area where multiple photovoltaic panels 20 are set.

[0078] In this embodiment, the camera assembly 51 may include a chassis, a support frame and a camera; the chassis is fixed at the inspection point; a DSP processor and a third wireless communication circuit are arranged in the chassis; a support frame is fixedly arranged on the side of the chassis, and the end of the support frame is connected to the camera; the DSP processor is electrically connected to the camera and the third wireless communication module respectively. The camera assembly 51 is installed at the inspection point of the photovoltaic power generation panel 20, and some key parts of the photovoltaic power generation panel 20 can be photographed at close range.

[0079] In this embodiment, the central control platform 60 can send an inspection task request to the inspection drone 52. After receiving the task request, the inspection drone 52 controls the flight through the flight control component to ensure that it can perform inspections along the predetermined path, so as to achieve comprehensive inspections of multiple photovoltaic panels 20. Among them, the camera component of the inspection drone 52 can collect image information during the inspection process, such as capturing image information on the surface of the photovoltaic panel. The main control board can process the image information, convert it into a digital signal, and send it to the first wireless communication circuit 64 through the second wireless communication circuit for processing and decision-making by the control circuit 61.

[0080] See also Figure 2 In one embodiment of the utility model, the digital safety intelligent protection device also includes a water quality detection device 90; wherein the water quality detection device 90 is arranged at the water supply network management, and the water quality detection device 90 includes a water quality sensor, a signal modulation circuit, an analog-to-digital conversion circuit, a controller and a third wireless communication circuit; wherein the output end of the water quality sensor is electrically connected to the input end of the signal modulation circuit, the output end of the signal modulation circuit is electrically connected to the input end of the analog-to-digital conversion circuit, the output end of the analog-to-digital conversion circuit is electrically connected to the controller, and the controller is electrically connected to the third wireless communication circuit; the third wireless communication circuit is communicatively connected to the first wireless communication circuit 64; the water quality sensor is used to collect water quality signals;

[0081] The control circuit 61 is also used to control the operation of the display component 62 and the alarm component 63 according to the water quality signal.

[0082] It should be noted that this embodiment can not only improve the stability and safety of the power supply of the photovoltaic water plant, but also monitor the water quality of the water supply network to evaluate the water quality status, and can display the water quality information visually or issue an alarm to promptly notify the operation and maintenance personnel of the water quality status.

[0083] It should be noted that the input end of the water supply network is connected to the outlet pipe of the water supply pump room of the photovoltaic water plant, and the multiple output ends of the water supply network are connected to multiple water terminal pipes. In this embodiment, the water quality detection device 90 is set at the water supply network to monitor the water quality in real time, quickly detect and respond to any water quality changes or problems, such as a sudden increase in pollutants, and notify the operation and maintenance personnel through the display component 62 / alarm component 63 to handle, for example, the water treatment equipment can be inspected, repaired, and replaced.

[0084] In this embodiment, the water quality sensor may include a pH detection head, a dissolved oxygen detection head, a turbidity detection head, a conductivity detection head, a temperature detection head, an ammonia nitrogen detection head and an advanced redox potential detection head. Among them, the pH detection head can determine the acidity and alkalinity of water by measuring the concentration of hydrogen ions in water, and the pH value of the water sample can be determined by the potential difference between the glass membrane electrode and the reference electrode. The dissolved oxygen detection head can measure the dissolved oxygen content in water by electrochemical or optical methods to reflect the oxygen supply in the water body. The turbidity detection head can determine the turbidity of water by measuring the degree of light scattering by suspended particles in water, thereby reflecting the clarity of water quality. The conductivity detection head can judge the purity of water quality by the concentration of electrolytes in water, wherein the conductivity is generally proportional to the total dissolved solids. The temperature detection head can measure the water temperature, which is likely to affect other water quality parameters, for example, the dissolved oxygen content will decrease with the increase of temperature. The ammonia nitrogen detection head can measure the ammonia nitrogen content in water to determine the degree of water pollution. The advanced redox potential detection head can measure the redox potential in the water, reflect the redox state of the water body, and thus indirectly reflect the change in water quality. In this embodiment, the water quality sensor can collect water quality signals, modulate them through the signal modulation circuit, such as amplification, filtering, etc., and then convert them into digital signals through the analog-to-digital conversion circuit and input them into the controller, which sends them to the control circuit 61 of the central control platform 60 through the third wireless communication circuit. When the water quality is lower than the preset water quality threshold, the control circuit 61 controls the alarm circuit to sound an alarm to notify the operation and maintenance personnel, and controls the display component to display the water quality data for the operation and maintenance personnel to process and analyze.

[0085] See also Figure 2 In one embodiment of the present utility model, the switch circuit 40 includes:

[0086] A first electronic switch 41, the input end of the first electronic switch 41 is electrically connected to the energy storage device 10; the controlled end of the first electronic switch 41 is electrically connected to the central control platform 60;

[0087] A second electronic switch 42, the input end of the second electronic switch 42 is electrically connected to the rectifier 30; the controlled end of the second electronic switch 42 is electrically connected to the central control platform 60;

[0088] A multi-way selection switch 43, wherein the first input end of the multi-way selection switch 43 is electrically connected to the output end of the first electronic switch 41, and the second input end of the multi-way selection switch 43 is electrically connected to the output end of the second electronic switch 42. The multiple output ends of the multi-way selection switch 43 are used for electrical connection of multiple electrical devices; the controlled end of the multi-way selection switch 43 is electrically connected to the central control platform 60.

[0089] In this embodiment, when the first electronic switch 41 is closed, the energy storage device 10 inputs power to the multi-way selection switch 43; when the second electronic switch 42 is closed, the rectifier 30 inputs power to the multi-way selection switch 43. Then, the power can be delivered to multiple power-consuming devices through the multi-way selection switch 43. It can be understood that the central control platform 60 can control the power consumption state of multiple power-consuming devices by controlling the gate switch state of the multi-way selection switch 43, thereby realizing remote control of multiple power-consuming devices.

[0090] See also Figure 4 In one embodiment of the utility model, the flight control assembly includes a positioner, an angle sensor, an acceleration sensor, a wind speed sensor, an altitude sensor and a flight controller, and the flight controller is electrically connected to the main control board, the positioner, the angle sensor, the acceleration sensor, the wind speed sensor and the altitude sensor respectively;

[0091] The camera assembly includes an infrared thermal imaging camera, a color visible light camera, a black and white visible light camera and a steering drive circuit; the infrared thermal imaging camera, the color visible light camera, the black and white visible light camera and the steering drive circuit are electrically connected to the main control board respectively; the steering drive circuit is mechanically connected to the rotating mechanism of the inspection drone 52, and is used to drive the rotation of the rotating mechanism of the inspection drone 52 to adjust the shooting angle of the infrared thermal imaging camera, the color visible light camera and the black and white visible light camera.

[0092] It should be noted that the angle sensor, acceleration sensor, wind speed sensor and altitude sensor can collect data on key parameters such as attitude angle, acceleration, wind speed and altitude of the inspection drone 52 in real time during flight, and send the collected data to the flight controller. At the same time, the flight controller obtains the current position information through the locator. The flight controller can analyze the collected information and adjust the parameters such as the rudder position and motor speed of the aircraft on the drone body of the inspection drone 52 according to the analysis results, so that the inspection drone 52 can fly according to the predetermined trajectory, maintain a stable attitude, avoid obstacles or complete other flight tasks.

[0093] It should be noted that, through the combination of infrared thermal imaging cameras, color visible light cameras and black and white visible light cameras, the inspection drone 52 can simultaneously obtain multi-modal image data, can provide more comprehensive and integrated image information, and more accurately identify and analyze the target. Among them, the steering drive circuit can adjust the shooting angle and direction of each camera by driving the rotating mechanism to ensure that the camera can capture the best image field of view, thereby improving the efficiency and quality of image acquisition of the photovoltaic panel 20.

[0094] See also Figure 5 In one embodiment of the utility model, the signal modulation circuit includes a first amplifier OP1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, a second capacitor C2 and a third capacitor C3; the analog-to-digital conversion circuit includes an analog-to-digital converter;

[0095] Among them, the output end of the water quality sensor, one end of the first resistor R1, and one end of the first capacitor C1 are electrically connected to the reverse input end of the first amplifier OP1; the other end of the first resistor R1, the other end of the first capacitor C1, and the output end of the first amplifier OP1 are electrically connected to one end of the second resistor R2, and the other end of the second resistor R2, one end of the second capacitor C2 are electrically connected to one end of the third resistor R3; the other end of the third resistor R3, one end of the fourth resistor R4, and one end of the third capacitor C3 are electrically connected to the input end of the analog-to-digital converter; the positive input end of the first amplifier OP1, the other end of the second capacitor C2, the other end of the fourth resistor R4, and the other end of the third capacitor C3 are grounded; the output end of the analog-to-digital converter is electrically connected to the controller.

[0096] In this embodiment, the first amplifier OP1 can amplify the water quality signal, and the first capacitor C1 and the first resistor R1 together with the first amplifier OP1 constitute the feedback circuit of the amplifier, which can adjust the gain of the first amplifier OP1. The second resistor R2 and the second capacitor C2 constitute a low-pass filter, which can filter out high-frequency components to reduce high-frequency noise or interference in the water quality signal, and help improve the anti-interference ability of the signal. The third resistor R3, the fourth resistor R4, and the third capacitor C3 constitute a sampling and holding circuit, and the sampling and holding circuit can convert the water quality signal into a form that can be processed by the analog-to-digital converter. The resistance values ​​of the third resistor R3 and the fourth resistor R4 can be adjusted according to the acquisition range of the analog-to-digital converter. Among them, the voltage value at both ends of the fourth resistor R4 changes according to the voltage change of the water quality signal, the third capacitor C3 can play a role of filtering, and the analog-to-digital converter can convert the input analog signal into a digital signal output. In this way, the present embodiment can obtain the water quality signal, and convert the sampled water quality signal into a digital signal output, so that the controller sends it to the control circuit 61 of the central control platform 60 for analysis.

[0097] See also Figure 6 In one embodiment of the utility model, the steering drive circuit includes a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a fourth capacitor C4, a first switch tube Q1, a first diode D1 and a motor M;

[0098] Among them, one end of the fifth resistor R5 is electrically connected to the main control board, and the other end of the fifth resistor R5 and one end of the sixth resistor R6 are electrically connected to the controlled end of the first switch tube Q1; the first end of the first switch tube Q1, one end of the motor M, and one end of the fourth capacitor C4 are connected to the cathode of the first diode D1; the other end of the motor M, the other end of the fourth capacitor C4, and the anode of the first diode D1 are connected to the power input end of the steering drive circuit; the second end of the first switch tube Q1 is connected to one end of the seventh resistor R7; the other end of the sixth resistor R6 and the other end of the seventh resistor R7 are grounded.

[0099] In this embodiment, the first switch tube Q1 can be an NMOS tube, and the main control board can output PWM control signals with different duty ratios to control the conduction period of the NMOS tube to adjust the rotation power of the motor M. Among them, the fifth resistor R5, the sixth resistor R6 and the seventh resistor R7 can be used for current limiting, the first diode D1 can prevent the reverse voltage from damaging the motor M, the fourth capacitor C4 can play a role in voltage stabilization, and the first switch tube Q1 can control the power supply of the motor M to be on and off, thereby controlling the working state of the motor M.

[0100] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A digital safety intelligent protection device, characterized in that: include: Energy storage equipment; A plurality of photovoltaic power generation panels, wherein power output ends of the plurality of photovoltaic power generation panels are electrically connected to the energy storage device, and the photovoltaic power generation panels are used to convert light energy into electrical energy and store it in the energy storage device; A rectifier, wherein the input end of the rectifier is electrically connected to the input end of the external AC power supply, and the rectifier is used to convert the external AC power supply into a DC power supply output; A switch circuit, wherein a first input end of the switch circuit is electrically connected to the energy storage device, and a second input end of the switch circuit is electrically connected to an output end of the rectifier; a plurality of output ends of the switch circuit are electrically connected to a plurality of electrical devices; the switch circuit is used to control the on / off of the circuit between the energy storage device and the plurality of electrical devices, and is used to control the on / off of the circuit between the rectifier and the plurality of electrical devices; An image acquisition device, the image acquisition device is used to acquire image information of the plurality of photovoltaic panels; A central control platform, the central control platform is electrically connected to the detection end of the energy storage device and the controlled end of the switch circuit respectively, and the central control platform is also communicatively connected to the image acquisition device; the central control platform is used to detect the voltage state of the energy storage device and receive the image information, and control the operation of the switch circuit according to the voltage state of the energy storage device and the image information.

2. The digital safety intelligent protection device according to claim 1, characterized in that: Also includes: A plurality of DC circuit breakers, wherein the first ends of the plurality of DC circuit breakers are electrically connected to the plurality of photovoltaic power generation panels, the second ends of the plurality of DC circuit breakers are electrically connected to the energy storage device, and the controlled ends of the plurality of DC circuit breakers are electrically connected to the central control platform; An AC circuit breaker, wherein a first end of the AC circuit breaker is electrically connected to an external AC power input end, a second end of the AC circuit breaker is electrically connected to the switch circuit, and a controlled end of the AC circuit breaker is electrically connected to the central control platform.

3. The digital safety intelligent protection device according to claim 2, characterized in that: It also includes a voltage conversion circuit, wherein multiple input terminals of the voltage conversion circuit are connected to multiple output terminals of the switch circuit, and multiple output terminals of the voltage conversion circuit are electrically connected to multiple electrical devices.

4. The digital safety intelligent protection device according to claim 3, characterized in that: The central control platform includes a control circuit, a display component, an alarm component and a first wireless communication circuit; the control circuit is electrically connected to the display component, the alarm component and the first wireless communication circuit respectively.

5. The digital safety intelligent protection device according to claim 4, characterized in that: The image acquisition device comprises: A camera component, wherein a controlled end of the camera component is communicatively connected to the first wireless communication circuit, and the camera component is disposed at a plurality of inspection points of the photovoltaic panels to obtain first image information of the inspection point area; An inspection drone, the inspection drone comprising a drone body and a main control board, a flight control component, a camera component and a second wireless communication circuit arranged on the drone body; the main control board is electrically connected to the flight control component, the camera component and the second wireless communication circuit respectively; the second wireless communication circuit is communicatively connected to the first wireless communication circuit; the inspection drone is used to obtain second image information of the flight inspection area.

6. The digital safety intelligent protection device according to claim 4, characterized in that: It also includes a water quality detection device; wherein the water quality detection device is arranged at the water supply network management, and the water quality detection device includes a water quality sensor, a signal modulation circuit, an analog-to-digital conversion circuit, a controller and a third wireless communication circuit; wherein the output end of the water quality sensor is electrically connected to the input end of the signal modulation circuit, the output end of the signal modulation circuit is electrically connected to the input end of the analog-to-digital conversion circuit, the output end of the analog-to-digital conversion circuit is electrically connected to the controller, and the controller is electrically connected to the third wireless communication circuit; the third wireless communication circuit is communicatively connected to the first wireless communication circuit; the water quality sensor is used to collect water quality signals; The control circuit is also used to control the operation of the display component and the alarm component according to the water quality signal.

7. The digital safety intelligent protection device according to claim 1, characterized in that: The switch circuit comprises: A first electronic switch, wherein an input end of the first electronic switch is electrically connected to the energy storage device; and a controlled end of the first electronic switch is electrically connected to the central control platform; a second electronic switch, wherein an input end of the second electronic switch is electrically connected to the rectifier; and a controlled end of the second electronic switch is electrically connected to the central control platform; A multi-way selection switch, wherein the first input end of the multi-way selection switch is electrically connected to the output end of the first electronic switch, the second input end of the multi-way selection switch is electrically connected to the output end of the second electronic switch, and the multiple output ends of the multi-way selection switch are used for electrical connection of multiple electrical devices; the controlled end of the multi-way selection switch is electrically connected to the central control platform.

8. The digital safety intelligent protection device according to claim 5, characterized in that: The flight control assembly includes a positioner, an angle sensor, an acceleration sensor, a wind speed sensor, an altitude sensor and a flight controller, and the flight controller is electrically connected to the main control board, the positioner, the angle sensor, the acceleration sensor, the wind speed sensor and the altitude sensor respectively; The camera assembly includes an infrared thermal imaging camera, a color visible light camera, a black and white visible light camera and a steering drive circuit; the infrared thermal imaging camera, the color visible light camera, the black and white visible light camera and the steering drive circuit are electrically connected to the main control board respectively; the steering drive circuit is mechanically connected to the rotating mechanism of the inspection drone, and is used to drive the rotation of the rotating mechanism of the inspection drone to adjust the shooting angles of the infrared thermal imaging camera, the color visible light camera and the black and white visible light camera.

9. The digital safety intelligent protection device according to claim 6, characterized in that: The signal modulation circuit includes a first amplifier, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor and a third capacitor; the analog-to-digital conversion circuit includes an analog-to-digital converter; Among them, the output end of the water quality sensor, one end of the first resistor, and one end of the first capacitor are electrically connected to the inverting input end of the first amplifier; the other end of the first resistor, the other end of the first capacitor, and the output end of the first amplifier are electrically connected to one end of the second resistor, and the other end of the second resistor and one end of the second capacitor are electrically connected to one end of the third resistor; the other end of the third resistor, one end of the fourth resistor, and one end of the third capacitor are electrically connected to the input end of the analog-to-digital converter; the positive input end of the first amplifier, the other end of the second capacitor, the other end of the fourth resistor, and the other end of the third capacitor are grounded; the output end of the analog-to-digital converter is electrically connected to the controller.

10. The digital safety intelligent protection device according to claim 8, characterized in that: The steering drive circuit includes a fifth resistor, a sixth resistor, a seventh resistor, a fourth capacitor, a first switch tube, a first diode and a motor; Among them, one end of the fifth resistor is electrically connected to the main control board, and the other end of the fifth resistor and one end of the sixth resistor are electrically connected to the controlled end of the first switch tube; the first end of the first switch tube, one end of the motor, and one end of the fourth capacitor are connected to the cathode of the first diode; the other end of the motor, the other end of the fourth capacitor, and the anode of the first diode are connected to the power input end of the steering drive circuit; the second end of the first switch tube is connected to one end of the seventh resistor; the other end of the sixth resistor and the other end of the seventh resistor are grounded.

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