A dust accumulation monitoring device

Abstract

The present application discloses a dust accumulation monitoring device, including: a first temperature sensor, an irradiation detector, the irradiation detector includes a base, a light-transmitting dome, and a photovoltaic cell; the effective irradiation received by the photovoltaic cell is consistent with the effective irradiation received by the photovoltaic component to be detected; an electrical detection device connected to the photovoltaic component to be detected and used to detect the electrical parameters of the photovoltaic component to be detected; a data processing device connected to the electrical detection device and the irradiation detector and used to obtain the SR of the photovoltaic component to be detected according to the temperature and electrical parameters of the photovoltaic component to be detected detected by the first temperature sensor and the effective irradiation detected by the irradiation detector. The above technical solution disclosed in the present application directly monitors the dust accumulation of the photovoltaic component to be detected through the dust accumulation monitoring device, so as to improve the accuracy of the dust accumulation monitoring of the photovoltaic component, and by setting the light-transmitting dome in the irradiation detector, the irradiation detector and the photovoltaic cell are in a clean state, thereby reducing the cost of dust accumulation monitoring of the photovoltaic component.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic power station monitoring, and more specifically, to a dust accumulation monitoring device. Background Art

[0002] The power generation of photovoltaic power stations is affected by many factors, and among these factors, dust shielding is an extremely important factor. At present, the impact of dust (dirt) shielding is often expressed by SR (Soiling Rate, pollution ratio), SR = 1 means no shielding, SR = 0 means complete shielding (PV module output is 0).

[0003] At present, dust accumulation monitoring of photovoltaic modules is usually achieved in the following three ways: the first is to configure two reference photovoltaic cells, one of which is cleaned regularly or kept clean by a movable dust shielding device as a comparison piece, and the other is not treated. The SR of the photovoltaic module is calculated by comparing the short-circuit current of the two cells. The second is to use an optical sensor to analyze the light transmittance of dust attached to a certain area on the glass surface of the photovoltaic module, and calculate the SR of the photovoltaic module based on this. The third is to use a small photovoltaic cell to measure the effective irradiation, and keep it clean through an automatic water spray cleaning system, and then use a power testing device to measure the maximum power of a large component that is not cleaned, and use this to calculate the SR.

[0004] In the above implementation methods, since the first method uses the dust accumulation condition of the photovoltaic cells to reflect the dust accumulation condition of the entire photovoltaic module, and the second method uses a local area of ​​the photovoltaic module to reflect the dust accumulation condition of the entire photovoltaic module, the accuracy of the photovoltaic module dust accumulation monitoring will be reduced. The third method requires the additional addition of an automatic water spray cleaning system, therefore, the cost of photovoltaic module dust accumulation monitoring will be relatively high.

[0005] In summary, how to improve the accuracy of photovoltaic module dust accumulation monitoring and reduce the cost of photovoltaic module dust accumulation monitoring is a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0006] In view of this, the purpose of the present application is to provide a dust accumulation monitoring device for improving the accuracy of dust accumulation monitoring of photovoltaic modules and reducing the cost of dust accumulation monitoring of photovoltaic modules.

[0007] In order to achieve the above objectives, this application provides the following technical solutions:

[0008] A dust accumulation monitoring device, comprising:

[0009] A first temperature sensor installed on the photovoltaic assembly to be detected and used to detect the temperature of the photovoltaic assembly to be detected;

[0010] An irradiation detector, the irradiation detector comprising a base, a light-transmitting dome arranged on the base, and a photovoltaic cell arranged on the base and located in the light-transmitting dome; wherein the effective irradiation received by the photovoltaic cell is consistent with the effective irradiation received by the photovoltaic assembly to be detected;

[0011] An electrical detection device connected to the photovoltaic assembly to be detected and used to detect electrical parameters of the photovoltaic assembly to be detected;

[0012] A data processing device connected to the electrical detection device and the irradiation detector, used to obtain the SR of the photovoltaic component to be detected based on the temperature of the photovoltaic component to be detected, the electrical parameters and the effective irradiation detected by the irradiation detector.

[0013] Preferably, the radiation detector and the photovoltaic assembly to be inspected are installed on the same plane.

[0014] Preferably, the radiation detector further comprises:

[0015] An optical diffuser is arranged on the base, located in the light-transmitting dome and above the photovoltaic cell, and has a light transmittance proportional to the cosine value of the incident angle of the light, and is used to simulate the incident angle response of the photovoltaic component to be tested.

[0016] Preferably, the radiation detector further comprises:

[0017] A second temperature sensor disposed on the base and used to detect the temperature of the photovoltaic cell;

[0018] A signal converter is arranged on the base and is used to use the temperature of the photovoltaic cell to perform temperature compensation on the current signal of the photovoltaic cell and convert it into a digital signal or an analog voltage value.

[0019] Preferably, the radiation detector is connected to the data processing equipment via a signal line.

[0020] Preferably, the photovoltaic cell is an N-type photovoltaic cell.

[0021] Preferably, the electrical detection device is an IV curve scanner.

[0022] Preferably, the light-transmitting dome is a glass dome.

[0023] Preferably, the radiation detector is connected to a DC power supply via a power cord.

[0024] The present application provides a dust accumulation monitoring device, comprising: a first temperature sensor installed on a photovoltaic component to be detected and used to detect the temperature of the photovoltaic component to be detected; an irradiation detector, the irradiation detector comprising a base, a light-transmitting dome arranged on the base, and a photovoltaic cell arranged on the base and located in the light-transmitting dome; wherein the effective irradiation received by the photovoltaic cell is consistent with the effective irradiation received by the photovoltaic component to be detected; an electrical detection device connected to the photovoltaic component to be detected and used to detect the electrical parameters of the photovoltaic component to be detected; a data processing device connected to the electrical detection device and the irradiation detector and used to obtain the SR of the photovoltaic component to be detected based on the temperature, electrical parameters of the photovoltaic component to be detected and the effective irradiation detected by the irradiation detector.

[0025] The above technical scheme disclosed in the present application measures the effective irradiation of the photovoltaic component to be detected by using an irradiation detector that includes a photovoltaic cell and the effective irradiation received by the photovoltaic cell is consistent with the effective irradiation received by the photovoltaic component to be detected as the detection object, and the data processing equipment obtains the SR of the photovoltaic component to be detected according to the temperature of the photovoltaic component to be detected detected by a first temperature sensor installed on the back of the photovoltaic component to be detected, the electrical parameters obtained by the electrical detection device connected to the photovoltaic component to be detected, and the effective irradiation obtained by the irradiation detector. That is, the dust accumulation of the photovoltaic component to be detected is directly monitored by the dust accumulation monitoring device of the present application. Since the photovoltaic component to be detected can truly reflect the dust accumulation situation of the photovoltaic component in the photovoltaic power station, the accuracy of the dust accumulation monitoring of the photovoltaic component can be improved. At the same time, since the irradiation detector is provided with a light-transmitting dome located outside the photovoltaic cell, it can minimize the risk of dust accumulation, so as to achieve the cleaning of the irradiation detector and the internal photovoltaic cell without the aid of additional cleaning equipment, thereby reducing the cost of dust accumulation monitoring of photovoltaic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application 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 embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of the structure of a dust accumulation monitoring device provided in an embodiment of the present application;

[0028] Figure 2 A schematic diagram of the structure of the radiation detector provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] See also Figure 1 and Figure 2 ,in, Figure 1 A schematic diagram of the structure of a dust accumulation monitoring device provided in an embodiment of the present application is shown. Figure 2 A dust accumulation monitoring device provided in an embodiment of the present application may include:

[0031] A first temperature sensor 5 installed on the photovoltaic component 4 to be detected and used to detect the temperature of the photovoltaic component 4 to be detected;

[0032] The irradiation detector 1 may include a base 11, a light-transmitting dome 12 disposed on the base 11, and a photovoltaic cell 13 disposed on the base 11 and located in the light-transmitting dome 12; wherein the effective irradiation received by the photovoltaic cell 13 is consistent with the effective irradiation received by the photovoltaic assembly 4 to be detected;

[0033] An electrical detection device 2 connected to the photovoltaic assembly 4 to be detected and used to detect electrical parameters of the photovoltaic assembly 4 to be detected;

[0034] A data processing device 3 connected to the electrical detection device 2 and the irradiation detector 1 and used for obtaining the SR of the photovoltaic component 4 to be detected according to the electrical parameters and the effective irradiation detected by the irradiation detector 1.

[0035] The dust accumulation monitoring device provided in the present application may include a first temperature sensor 5 installed on the photovoltaic assembly 4 to be detected, an irradiation detector 1, an electrical detection device 2 connected to the photovoltaic assembly 4 to be detected, and a data processing device 3 connected to the irradiation detector 1 and the electrical detection device 2. In addition, the dust accumulation monitoring device provided in the present application can use a photovoltaic assembly 4 to be detected of a conventional size as the detection object, and specifically a photovoltaic assembly used in a photovoltaic power station project can be selected as the photovoltaic assembly 4 to be detected, and it can be fully processed for light decay in advance. Since photovoltaic assemblies of conventional sizes can best reflect the dust accumulation of photovoltaic assemblies in photovoltaic power stations (including uniform dust accumulation and uneven dust accumulation), therefore, when the dust accumulation monitoring device of the present application is used to monitor the dust accumulation of the photovoltaic assembly 4 to be detected, the accuracy of the dust accumulation detection of the photovoltaic assembly can be improved. Among them, the first temperature sensor 5 is used to detect the temperature of the photovoltaic assembly 4 to be detected, and the first temperature sensor 5 can be specifically installed on the back of the photovoltaic assembly 4 to be detected, so as to reduce the influence on the power generation of the photovoltaic assembly 4 to be detected while detecting the temperature of the photovoltaic assembly 4 to be detected.

[0036] In the dust accumulation detection device provided in the present application, the irradiation detector 1 may specifically include a base 11, a light-transmitting dome 12 arranged on the base 11, and a photovoltaic cell 13 arranged on the base 11 and located in the light-transmitting dome 12, wherein the effective irradiation received by the photovoltaic cell 13 is consistent with the effective irradiation received by the photovoltaic component 4 to be detected, so that the irradiation detector 1 can be used to detect the effective irradiation received by the photovoltaic component 4 to be detected, and send the detected effective irradiation to the data processing equipment 3 connected thereto. It should be noted that the irradiation detector 1 may also include a power cord 14 arranged on the base 11, so as to be connected to the power supply through the power cord 14, so that the irradiation detector 1 can detect effective irradiation. Among them, the photovoltaic cell 13 in the irradiation detector 1 is the same as the photovoltaic cell in the photovoltaic assembly 4 to be detected, that is, when the photovoltaic cell in the photovoltaic assembly 4 to be detected is a silicon-based photovoltaic cell, the photovoltaic cell 13 in the irradiation detector 1 is also a silicon-based photovoltaic cell. Since the irradiation detector 1 uses the photovoltaic cell 13 consistent with the photovoltaic assembly 4 to be detected, its spectral response is basically consistent with the photovoltaic assembly 4 to be detected, and it is very suitable for measuring the effective irradiance of the photovoltaic assembly 4 to be detected. In addition, the light-transmitting dome 12 set on the outermost layer of the irradiation detector 1 can not only isolate dust, but also reduce the risk of dust accumulation to the maximum extent. Therefore, even if no additional cleaning equipment is installed, the irradiation detector 1 can be in a relatively clean state for a long time. Since no additional cleaning equipment is required, the cost of photovoltaic assembly dust accumulation detection can be reduced. At the same time, since the irradiation detector 1 can provide long-term and effective irradiation data, which is consistent with the basic requirements of the photovoltaic power station, the photovoltaic power station installed with the dust accumulation monitoring device does not need to configure an additional irradiator in the meteorological station, thereby reducing the dust accumulation monitoring cost.

[0037] In the dust accumulation detection device provided in the present application, the electrical detection device 2 connected to the photovoltaic assembly 4 to be detected can detect the electrical parameters of the photovoltaic assembly 4 to be detected, and specifically can monitor the open circuit voltage (Voc), short circuit current (Isc), IV curve, maximum output power and other electrical parameters of the photovoltaic assembly 4 to be detected, and can send the detected electrical parameters to the data processing device 3 connected thereto. Among them, the electrical detection device 2 can be operated at a set time (specifically, it can be set by irradiance, for example, from 10 am to 2 pm every day), and during operation, a test can be performed at regular intervals (for example, 10 minutes). At the same time, when performing the test, the open circuit voltage (Voc) can be measured first, and then the short circuit current (Isc) can be measured, and then the IV curve can be scanned (scanned by ramp voltage). In addition, during the non-test period, the photovoltaic assembly 4 to be detected can always be in an open circuit state to minimize the risk of attenuation.

[0038] In the dust accumulation detection device provided in the present application, the data processing device 3 can calculate the SR of the photovoltaic component 4 to be detected by combining the temperature of the photovoltaic component 4 to be detected detected by the first temperature sensor 5, the electrical parameters of the photovoltaic component 4 to be detected detected by the electrical detection device 2, and the effective irradiation detected by the irradiation detector 1 at the same time as the electrical parameters. Specifically, the SR of the photovoltaic component 4 to be detected can be calculated in combination with the IV curve of the photovoltaic component 4 to be detected on the day and the effective irradiation data at the corresponding time to analyze the influence of dust blocking, wherein the calculation process of SR is specifically: according to IEC60891, the IV value (I1, V1) of the component under a specific environment is converted to the IV value (I2, V2) under STC conditions, and the calculation formula is:

[0039]

[0040] V2=V1-R s .(I2-I1)-κ·(T2-T1)+β·(T2-T1)

[0041] In the present application, I1 is the current value in the IV curve of the photovoltaic module 4 to be detected obtained by the electrical detection device 2, V1 is the voltage value corresponding to I1 in the IV curve of the photovoltaic module 4 to be detected obtained by the electrical detection device 2, G1 is the effective irradiation measured by the irradiation detector 1, T1 is the temperature detected by the first temperature sensor 5, I2 is the current value converted from I1 to STC conditions, V2 is the voltage value converted from V1 to STC conditions, G1 is 1000 under STC conditions, T2 is 25 under STC conditions, α, β, R s , κ are component parameters of the photovoltaic component 4 to be tested, which can be obtained from the supplier of the photovoltaic component 4 to be tested.

[0042] After the IV curve detected by the electrical detection device 2 is converted to STC conditions in the above manner, the maximum power of the IV curve corresponding to the STC conditions can be found, that is, Pmpp=max(I2*V2). In addition, whenever the photovoltaic component 4 to be detected is thoroughly cleaned (just after a heavy rain or just after cleaning), if the weather is fine during the set time period (for example, the period from 10 am to 2 pm mentioned above), the maximum power of the photovoltaic component 4 to be detected can be calibrated, that is, Pnom=max(I2*V2). Then, the SR of the photovoltaic component 4 to be detected during each IV curve scan can be obtained according to SR(t)=Pmpp / Pnom. In addition, when the photovoltaic assembly 4 to be inspected is inspected every day, the data processing device 3 can output all SR values ​​of the photovoltaic assembly 4 to be inspected during the measurement period, or can output a median SR of the day, that is, SR(daily)=median(SR(t)), wherein SR(daily) represents the output of the day, SR(t) represents the SRs obtained on the day, and median(SR(t)) represents the median SR of the day.

[0043] After the data processing device 3 obtains the SR of the photovoltaic component 4 to be tested, relevant personnel can carry out a cleaning plan for the photovoltaic power station where the photovoltaic component 4 to be tested is located according to the SR. Specifically, when the SR (daily) is less than a threshold (for example, 0.8) and the possibility of rainfall in the near future is expected to be relatively low, a cleaning plan for the photovoltaic power station can be arranged to improve the cleanliness of the photovoltaic components in the photovoltaic power station, thereby facilitating the increase of the power generation of the photovoltaic power station.

[0044] The above technical scheme disclosed in the present application measures the effective irradiation of the photovoltaic component to be detected by using an irradiation detector that includes a photovoltaic cell and the effective irradiation received by the photovoltaic cell is consistent with the effective irradiation received by the photovoltaic component to be detected as the detection object, and the data processing equipment obtains the SR of the photovoltaic component to be detected according to the temperature of the photovoltaic component to be detected detected by a first temperature sensor installed on the back of the photovoltaic component to be detected, the electrical parameters obtained by the electrical detection device connected to the photovoltaic component to be detected, and the effective irradiation obtained by the irradiation detector. That is, the dust accumulation of the photovoltaic component to be detected is directly monitored by the dust accumulation monitoring device of the present application. Since the photovoltaic component to be detected can truly reflect the dust accumulation situation of the photovoltaic component in the photovoltaic power station, the accuracy of the dust accumulation monitoring of the photovoltaic component can be improved. At the same time, since the irradiation detector is provided with a light-transmitting dome located outside the photovoltaic cell, it can minimize the risk of dust accumulation, so as to achieve the cleaning of the irradiation detector and the internal photovoltaic cell without the aid of additional cleaning equipment, thereby reducing the cost of dust accumulation monitoring of photovoltaic components.

[0045] In an embodiment of the present application, a dust accumulation monitoring device is provided, wherein a radiation detector 1 and a photovoltaic assembly 4 to be detected are installed on the same plane.

[0046] In the dust accumulation monitoring device provided in the present application, the irradiation detector 1 can be installed on the same plane as the photovoltaic component 4 to be detected, so that the effective irradiation received by the irradiation detector 1 can be kept consistent as much as possible with the effective irradiation received by the photovoltaic component 4 to be detected, thereby facilitating the improvement of the accuracy of the effective irradiation detected by the irradiation detector 1, and further facilitating the improvement of the accuracy of the SR calculation.

[0047] The dust accumulation monitoring device provided in the embodiment of the present application, the radiation detector 1 may also include:

[0048] An optical diffuser 15 is arranged on the base 11, located in the light-transmitting dome 12 and above the photovoltaic cell 13, and has a light transmittance proportional to the cosine value of the incident angle of the light, and is used to simulate the incident angle response of the photovoltaic component 4 to be tested.

[0049] In the dust accumulation monitoring device provided in the present application, the irradiation detector 1 may further include an optical diffuser 15, wherein the optical diffuser may be arranged on the base 11, and it may be located in the light-transmitting dome 12 and may be specifically arranged above the photovoltaic cell 13. In addition, the transmittance of the optical diffuser 15 is proportional to the cosine value of the incident angle of the light, so as to simulate the incident angle response of the photovoltaic component 4 to be detected, so that the effective irradiation of the photovoltaic cell 13 in the irradiation detector 1 can be kept consistent with the effective irradiation of the photovoltaic component 4 to be detected, thereby enabling the irradiation detector 1 to accurately detect the effective irradiation of the photovoltaic component 4 to be detected, so as to improve the accuracy of the SR calculation.

[0050] The dust accumulation monitoring device provided in the embodiment of the present application, the radiation detector 1 may also include:

[0051] A second temperature sensor 16 disposed on the base 11 and used to detect the temperature of the photovoltaic cell 13;

[0052] A signal converter 17 is disposed on the base 11 and is used to use the temperature of the photovoltaic cell 13 to perform temperature compensation on the current signal of the photovoltaic cell 13 and convert the current signal into a digital signal or an analog voltage value.

[0053] In the dust accumulation monitoring device provided in the present application, the irradiation detector 1 may also include a second temperature sensor 16 and a signal converter 17, wherein the second temperature sensor 16 and the signal converter 17 are both arranged on the base 11, and the second temperature sensor 16 is specifically arranged at the photovoltaic cell 13, and is used to detect the temperature of the photovoltaic cell 13 for temperature compensation. The signal converter 17 is used to use the temperature of the photovoltaic cell 13 detected by the second temperature sensor 16 to perform temperature compensation on the acquired current signal of the photovoltaic cell 13 (corresponding to the effective irradiation detected by the irradiation detector 1), and convert the current signal obtained by temperature compensation into a digital signal or an analog voltage signal that can characterize the effective irradiation detected by the irradiation detector 1 and is easy to transmit and calculate, so that the data processing device 3 can perform SR calculation based on this.

[0054] In an embodiment of the present application, a dust accumulation monitoring device is provided, wherein a radiation detector 1 is connected to a data processing device 3 via a signal line 18 .

[0055] A signal line 18 connected to the signal converter 17 can be provided on the base 11 of the radiation detector 1, and the radiation detector 1 can be connected to the data processing device 3 through the signal line 18, so that the relevant data converted by the signal converter 17 can be sent to the data processing device 3 through the signal line 18, so that the data processing device 3 can perform processing and calculation.

[0056] In the dust accumulation monitoring device provided in the embodiment of the present application, the photovoltaic cell 13 is an N-type photovoltaic cell.

[0057] In the present application, the photovoltaic cell 13 in the irradiation detector 1 may specifically be an N-type photovoltaic cell to achieve the function of "stability and low attenuation", thereby facilitating improving the accuracy of effective irradiation measurement.

[0058] In an embodiment of the present application, a dust accumulation monitoring device is provided, wherein the electrical detection device 2 is an IV curve scanner.

[0059] The electrical detection device 2 included in the dust accumulation monitoring device of the present application can specifically be an IV curve scanner, and the IV curve scanner is connected to the (+)(-) of the photovoltaic component 4 to be detected, so as to obtain the electrical parameters of the photovoltaic component 4 to be detected by using the IV curve scanner.

[0060] In the dust accumulation monitoring device provided by the embodiment of the present application, the light-transmitting dome 12 is a glass dome.

[0061] In the dust accumulation monitoring device provided in the present application, the light-transmitting dome 12 arranged on the radiation detector 1 can specifically be a glass dome, so that it can withstand wind pressure, temperature difference changes, etc. while playing a light-transmitting role, thereby better protecting its internal components, and further facilitating improving the working reliability and detection accuracy of the radiation detector 1.

[0062] In an embodiment of the present application, a dust accumulation monitoring device is provided, wherein the radiation detector 1 is connected to a DC power supply via a power line 14 .

[0063] In the present application, the radiation detector 1 can be connected to a DC power supply via a power cord 14 arranged on the base 11, that is, a DC power supply can be used to power the radiation detector 1, wherein the DC power supply can specifically be a 24V DC power supply, that is, the radiation detector 1 can use a 24V DC power supply as input.

[0064] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the term "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment that includes a series of elements are inherent to the elements. In the absence of more restrictions, the elements limited by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or equipment that includes the elements. In addition, the above-mentioned technical solution provided in the embodiment of the present application is consistent with the corresponding technical solution in the prior art in principle, and the part is not described in detail, so as not to repeat too much.

[0065] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dust accumulation monitoring device, characterized in that: include: A first temperature sensor installed on the photovoltaic assembly to be detected and used to detect the temperature of the photovoltaic assembly to be detected; An irradiation detector, the irradiation detector comprising a base, a light-transmitting dome arranged on the base, and a photovoltaic cell arranged on the base and located in the light-transmitting dome; wherein the effective irradiation received by the photovoltaic cell is consistent with the effective irradiation received by the photovoltaic assembly to be detected; An electrical detection device connected to the photovoltaic assembly to be detected and used to detect electrical parameters of the photovoltaic assembly to be detected; A data processing device connected to the electrical detection device and the irradiation detector, used to obtain the contamination ratio of the photovoltaic assembly to be detected according to the temperature of the photovoltaic assembly to be detected, the electrical parameters and the effective irradiation detected by the irradiation detector; The irradiation detector includes an optical diffuser which is arranged on the base, located in the light-transmitting dome and above the photovoltaic cell, and whose transmittance is proportional to the cosine value of the incident angle of the light, and is used to simulate the incident angle response of the photovoltaic component to be detected, as well as a second temperature sensor and a signal converter. The second temperature sensor and the signal converter are both arranged on the base, and the second temperature sensor is specifically arranged at the photovoltaic cell to detect the temperature of the photovoltaic cell for temperature compensation. The signal converter is used to perform temperature compensation on the current signal of the photovoltaic cell obtained by using the temperature of the photovoltaic cell detected by the second temperature sensor, and convert the current signal obtained by temperature compensation into a digital signal or an analog voltage signal that can characterize the effective irradiation detected by the irradiation detector and is convenient for transmission and calculation, so that the data processing equipment can calculate the pollution ratio accordingly.

2. The dust accumulation monitoring device according to claim 1, characterized in that: The radiation detector and the photovoltaic assembly to be detected are installed on the same plane.

3. The dust accumulation monitoring device according to claim 1, characterized in that: The radiation detector is connected to the data processing device via a signal line.

4. The dust accumulation monitoring device according to claim 1, characterized in that: The photovoltaic cell is an N-type photovoltaic cell.

5. The dust accumulation monitoring device according to claim 1, characterized in that: The electrical detection device is an IV curve scanner.

6. The dust accumulation monitoring device according to claim 1, characterized in that: The light-transmitting dome is a glass dome.

7. The dust accumulation monitoring device according to claim 1, characterized in that: The radiation detector is connected to a direct current power source via a power line.

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