Photovoltaic current collection line icing monitoring device

Abstract

The utility model provides a photovoltaic current collection line icing monitoring device comprising an image monitoring module used for collecting lead icing images through a visible light camera and a black light level camera, the visible light camera works in a first image collection mode, and the black light level camera works in a second image collection mode; the sensor module comprises a temperature and humidity sensor and a light sensing unit and is used for collecting temperature and humidity environment data and environment light intensity; the energy taking module is used for taking energy and supplying power; the communication module is used for establishing data transmission with a terminal; and the processor is electrically connected with the image monitoring module, the sensor module and the energy taking module, and is also used for switching a first image acquisition mode and a second image acquisition mode. According to the utility model, the icing condition can be effectively and accurately evaluated, the icing accident can be early warned, and the harm caused by icing can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power equipment detection, in particular to a monitoring device for icing on a photovoltaic power collection line. Background Art

[0002] With the rapid development of the photovoltaic new energy power generation industry, the power collection lines of the outgoing lines in the photovoltaic power station area are also facing increasing operation and maintenance pressures. Among them, icing is one of the main disasters suffered by power lines. Icing can cause accidents such as conductor galloping, pole inclination, collapse, wire breakage, insulator flashover, and communication interruption, greatly threatening the safe operation of the power system and bringing huge economic losses to society. Therefore, icing monitoring and early warning have important prevention and control significance.

[0003] At present, icing monitoring systems have been widely used. For example, a monitoring and early warning device and method for the icing thickness of a high-voltage transmission line shown in the patent number 201910471831.X directly calculates the icing thickness through the measurement angle and measurement distance of a laser ranging instrument, and uses a high-definition camera and an infrared camera to assist in image processing to determine the specific morphology of icing, realizing 24-hour real-time online monitoring. However, the infrared camera is limited by the irradiation distance of the infrared lamp. In many cases, it cannot help to judge whether the current image is the icing thickness or other foreign objects, and the analysis result is unreliable. Summary of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a monitoring device for icing on a photovoltaic power collection line, which solves the problems that the existing icing monitoring system cannot effectively and accurately evaluate the icing situation, early warn of icing accidents, and reduce the harm caused by icing.

[0005] According to an embodiment of the utility model, a monitoring device for icing on a photovoltaic power collection line is characterized by comprising:

[0006] An image monitoring module for collecting images of icing on a conductor, including a visible light camera and a black light level camera. The visible light camera works in a first image acquisition mode, and the black light level camera works in a second image acquisition mode;

[0007] A sensor module including a temperature and humidity sensor and a light sensing unit. The temperature and humidity sensor collects temperature and humidity environment data, and the light sensing unit collects the ambient light intensity;

[0008] An energy taking module for taking energy and supplying power;

[0009] A processor is electrically connected to the image monitoring module, the sensor module, and the energy taking module respectively, and is also used for switching the first image acquisition mode and the second image acquisition mode.

[0010] Optionally, the processor includes a USB port, a UART port, an I2C bus port, and an I / O port;

[0011] The visible light camera and the black light level camera are connected to the processor through the USB port, the environmental temperature and humidity sensor and the light sensing unit are connected to the processor through the I2C bus port, the energy harvesting module is connected to the processor through the I / O port, and the communication module is connected to the processor through the UART port.

[0012] Optionally, the environmental temperature and humidity sensor is an SHT30 model sensor.

[0013] Optionally, the energy harvesting module includes a BMS power management unit, a storage battery connected to the BMS power management unit, a solar energy harvesting unit, and an inductive energy harvesting unit.

[0014] Optionally, the communication module is a CAT4 broadband data transmission module.

[0015] Optionally, the processor further includes an SPI port;

[0016] The SPI port accesses a data storage module.

[0017] Optionally, the data storage module is a W25Q254 storage chip.

[0018] Optionally, the processor is an STM32H743 microcontroller,

[0019] Optionally, it further includes a clock module connected to the processor through the I2C bus port, and the clock module wakes up the processor at preset intervals.

[0020] The embodiment of the present utility model provides an ice covering monitoring device with an integrated design. It adopts a monitoring scheme combining a visible light lens and a black light level lens, and can automatically switch to the second image acquisition mode at extremely low brightness to collect the ice covering image of the wire through the black light level camera. The ice covering image of the wire collected by it has the same image quality as the ice covering image of the wire collected by selecting to turn on the visible light camera when the environmental light intensity is sufficient. Under this condition, the embodiment of the present utility model can achieve effective and accurate ice covering situation assessment and ice covering accident warning for 24 hours, thereby reducing the harm caused by ice covering. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the composition structure of the photovoltaic collector line ice covering monitoring device according to the embodiment of the present utility model;

[0022] Figure 2 is Figure 1 a schematic diagram of the composition structure of the energy harvesting module in

[0023] Figure 3 Schematic diagram of the composition structure of the icing monitoring device for a photovoltaic power collection line according to another embodiment of the present utility model.

[0024] In the above-mentioned drawings: 1. Image monitoring module, 11. Visible light camera, 12. Black light level camera; 2. Sensor module, 21. Temperature and humidity sensor, 22. Light sensing unit; 3. Energy harvesting module, 31. BMS power management unit, 32. Battery, 33. Solar energy harvesting unit, 34. Inductive energy harvesting unit; 4. Communication module; 5. Processor; 6. Data storage module; 7. Clock module. Specific embodiments

[0025] The technical solutions in the present utility model will be further described below with reference to the drawings and embodiments.

[0026] As Figure 1 shown, an embodiment of the present utility model provides an icing monitoring device for a photovoltaic power collection line, including an image monitoring module 1, a sensor module 2, an energy harvesting module 3, a communication module 4, and a processor 5. Among them, the processor 5 is electrically connected to the image monitoring module 1, the sensor module 2, and the energy harvesting module 3 respectively.

[0027] Please refer to Figure 1 , the functions that can be realized by each module in the icing monitoring device for a photovoltaic power collection line and the detailed composition structure are as follows:

[0028] The image monitoring module 1 includes a visible light camera 11 and a black light level camera 12. Among them, the visible light camera 11 operates in the first image acquisition mode, and the black light level camera 12 operates in the second image acquisition mode, both of which are used to collect images of wire icing.

[0029] The sensor module 2 includes a temperature and humidity sensor 21 and a light sensing unit 22. The temperature and humidity sensor 21 collects temperature and humidity environment data, and the light sensing unit 22 collects ambient light intensity.

[0030] The energy harvesting module 3 is used to realize energy harvesting and power supply.

[0031] The communication module 4 is used to establish data transmission with the terminal.

[0032] The processor 5 is electrically connected to the image monitoring module 1, the sensor module 2, and the energy harvesting module 3 respectively. It can be understood that in practical applications, the processor 5 includes an application program for realizing icing monitoring. In the embodiment of the present utility model, the processor 5 is also used to switch between the first image acquisition mode and the second image acquisition mode.

[0033] The ice-covering monitoring device for a photovoltaic power collection line provided by an embodiment of the present utility model has the following detailed working process: First, the ice-covering monitoring device for a photovoltaic power collection line is installed on the conductor of the photovoltaic power collection line. Second, after the energy-taking module 3 takes energy, it supplies power to the processor 5, and then supplies power to the image monitoring module 1, the sensor module 2, and the communication module 4 connected to the processor 5. During operation, the light-sensing unit 22 of the sensor module 2 collects the current ambient light intensity, so that the processor 5 automatically switches between the first image acquisition mode and the second image acquisition mode according to the light intensity. For example, when the ambient light intensity is sufficient, the visible light camera 11 is selected to be turned on, and when the ambient light intensity is insufficient, the black light-level camera 12 is selected to be turned on, and finally the acquisition of the conductor ice-covering image is realized; at the same time, the ambient temperature and humidity data are collected through the temperature and humidity sensor 21. The processor 5 judges whether there is ice-covering on the conductor of the photovoltaic power collection line according to the above-mentioned conductor ice-covering image and the ambient temperature and humidity data, and sends the conductor ice-covering image and the ambient temperature and humidity data to the terminal through the communication module 4, such as the terminal device of the monitoring master station, to notify the operation and maintenance personnel of the power collection line.

[0034] The embodiment of the present utility model provides an ice-covering monitoring device with an integrated design. It adopts a monitoring scheme combining a visible light lens and a black light-level lens, and can automatically switch to the second image acquisition mode at extremely low brightness to collect the conductor ice-covering image through the black light-level camera 12. The quality of the conductor ice-covering image collected by it is the same as that of the conductor ice-covering image collected by turning on the visible light camera 11 when the ambient light intensity is sufficient. Under this condition, the embodiment of the present utility model can realize an effective and accurate assessment of the ice-covering situation and an early warning of ice-covering accidents for 24 hours, thereby reducing the harm caused by ice-covering. In addition, a hybrid energy-taking method of solar energy taking and inductive energy taking is adopted to improve the reliability of the device power supply.

[0035] Please refer to Figure 1 , in the embodiment of the present utility model, the processor 5 includes a USB (Universal Serial Bus) port, a UART (Universal Asynchronous Receiver / Transmitter) port, an I2C bus port, and an I / O port; based on this, the connection relationship between the image monitoring module 1, the sensor module 2, the energy-taking module 3, and the communication module 4 and the processor 5 is as follows: the visible light camera 11 and the black light-level camera 12 are connected to the processor 5 through the USB port, the ambient temperature and humidity sensor 21 and the light-sensing unit 22 are connected to the processor 5 through the I2C bus port, the energy-taking module 3 is connected to the processor 5 through the I / O port, and the communication module 4 is connected to the processor 5 through the UART port.

[0036] In specific applications, the environmental temperature and humidity sensor 21 can be any sensor capable of collecting temperature and humidity data, such as a DHT11 model sensor, an SHT11 model sensor, an M2301 model sensor, etc. In a preferably implemented manner, the environmental temperature and humidity sensor 21 is an SHT30 model sensor.

[0037] Figure 2 Also shown is a structure of the energy harvesting module 3, which includes a BMS power management unit 31, a storage battery 32, a solar energy harvesting unit 33, and an inductive energy harvesting unit 34 connected to the BMS power management unit 31. Among them, the solar energy harvesting unit 33 and the inductive energy harvesting unit 34 respectively implement solar energy harvesting and electromagnetic induction energy harvesting, and the charging control and status management of the storage battery 32 are realized through the BMS control unit, improving the reliability of the device power supply.

[0038] In specific applications, the communication module 4 can be any chip or other electronic component capable of establishing data communication, such as a 4G transmission module, a 5G transmission module, a GPRS wireless data transmission module, etc. In a preferably implemented manner, the communication module 4 is a CAT4 broadband data transmission module.

[0039] Such as Figure 3 shown, according to another embodiment of the present invention, another component structure of the photovoltaic collector line icing monitoring device is provided. On the basis of Figure 1 , the processor 5 further includes an SPI (serial peripheral interface) port for accessing the data storage module 6. The I2C bus port of the processor 5 can also be connected to the clock module 7, and the clock module 7 is used to wake up the processor 5 at every preset time interval.

[0040] The detailed working process of the photovoltaic collector line icing monitoring device provided by the embodiment of the present invention is as follows: First, the photovoltaic collector line icing monitoring device is installed on the photovoltaic collector line conductor, and to reduce the overall power consumption of the system, the conductor icing monitoring device is in a sleep state. Then, the clock module wakes up the processor 5 at every preset time interval. After waking up, the device is in a working state, and when working, it realizes the working process as Figure 1 shown, which will not be elaborated here. In addition, the image data and the device working state data are stored through the data storage module.

[0041] In specific applications, the data storage module can be any suitable integrated memory or storage chip. In a preferably implemented manner, the data storage module is a W25Q254 storage chip, and adopts a cyclic storage method, with a maximum support for 30-day data storage.

[0042] In a specific application, the processor 5 is an arbitrary microprocessor capable of providing multiple expansion ports. In a preferred implementation, the processor 5 is an STM32H743 microcontroller.

[0043] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0044] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A photovoltaic power collection line icing monitoring device, characterized in that, Including: An image monitoring module for collecting conductor icing images, including a visible light camera and an ultraviolet camera. The visible light camera operates in a first image acquisition mode, and the ultraviolet camera operates in a second image acquisition mode; A sensor module including an environmental temperature and humidity sensor and a light sensing unit. The environmental temperature and humidity sensor collects temperature and humidity environmental data, and the light sensing unit collects environmental light intensity; An energy harvesting module for energy harvesting and power supply; A communication module for establishing data transmission with a terminal; A processor electrically connected to the image monitoring module, the sensor module, and the energy harvesting module respectively, and further configured to switch between the first image acquisition mode and the second image acquisition mode.

2. The ice accretion monitoring device for a photovoltaic power collection line according to claim 1, wherein The processor includes a USB port, a UART port, an I2C bus port, and an I / O port; The visible light camera and the ultraviolet camera are connected to the processor through the USB port. The environmental temperature and humidity sensor and the light sensing unit are connected to the processor through the I2C bus port. The energy harvesting module is connected to the processor through the I / O port. The communication module is connected to the processor through the UART port.

3. The ice coating monitoring device for a photovoltaic power collection line according to claim 2, characterized in that, The environmental temperature and humidity sensor is an SHT30 model sensor.

4. The ice coating monitoring device for a photovoltaic power collection line according to claim 2, characterized in that, The energy harvesting module includes a BMS power management unit, a battery connected to the BMS power management unit, a solar energy harvesting unit, and an inductive energy harvesting unit.

5. The ice covering monitoring device for a photovoltaic power collection line according to claim 2, wherein The communication module is a CAT4 broadband data transmission module.

6. The photovoltaic power collection line icing monitoring device according to claim 1 or 2, characterized in that, The processor further includes an SPI port; The SPI port is connected to a data storage module.

7. The ice accretion monitoring device for a photovoltaic power collection line according to claim 6, wherein, The data storage module is a W25Q254 storage chip.

8. The ice accretion monitoring device for a photovoltaic power collection line according to claim 6, characterized in that, The processor is an STM32H743 microcontroller.

9. The ice coating monitoring device for a photovoltaic power collection line according to claim 2, wherein It further includes a clock module connected to the processor through the I2C bus port. The clock module wakes up the processor at preset intervals.

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