CN203149765U - Photovoltaic system alarm equipment - Google Patents

Abstract

The utility model provides a photovoltaic system alarm device, comprising: a first photovoltaic component, a second photovoltaic component, a cleaning device, a controller, a memory and an alarm device, wherein the memory stores a preset alarm value, compares the first component and the power generation of the second component, calculate the difference between the power generation of the first component and the second component, and when the difference is greater than the preset alarm value, the alarm device sends an alarm signal instruction, and the controller executes the instruction in the memory. By setting up two modules with the same specifications, one module keeps the surface clean and the other module does not clean, so that dust shielding becomes the only factor that causes the difference in power generation of the two modules. Comparing the power generation of the two modules, two The difference between the power generation of the PV system and the optimal cleaning time of the photovoltaic system components can be judged, which improves the power generation of the photovoltaic system and reduces the maintenance cost of the photovoltaic system.

Description

A photovoltaic system alarm device

technical field

The utility model relates to the technical field of solar cells, in particular to a photovoltaic system alarm device. the

Background technique

Photovoltaic power generation is a power generation technology that converts solar energy into electrical energy. It is environmentally friendly, does not cause environmental pollution, and uses renewable resources. In today's energy shortage situation, photovoltaic power generation has broad development prospects. the

Photovoltaic power generation is mainly used in two fields: one is building integrated photovoltaic projects combined with buildings; the other is for large ground power stations. In these two application areas, the power generation of photovoltaic power generation systems is undoubtedly the fundamental issue that manufacturers, end users, and governments are all concerned about. Factors that affect power generation include internal factors such as components and photovoltaic system products, and other factors. Including external factors such as climate, ambient temperature, dust shielding, etc. Among them, the dust shielding on the surface of the module is a very important reason for reducing the power generation of the photovoltaic system. the

Modules Whether the components of a photovoltaic system need to be cleaned is usually judged by the staff based on personal experience, the actual impact of dust on the appearance of the components, and the power generation status of the photovoltaic system for which the cause cannot be finally determined. The judgment results are not accurate and reliable. The components of the photovoltaic system are not cleaned in time or are cleaned too much, resulting in a decrease in the power generation of the photovoltaic system or a waste of cost. the

Utility model content

The utility model provides an alarm device for a photovoltaic system, so that the components of the photovoltaic system can be cleaned in time and accurately, the power generation of the photovoltaic system can be increased, and cost waste can be avoided. the

In order to achieve the above object, the embodiment of the utility model provides the following technical solutions:

A photovoltaic system alarm device, characterized in that it comprises:

The first photovoltaic component and the second photovoltaic component, and the cleaning device connected with the first photovoltaic component, the specifications of the first photovoltaic component and the second photovoltaic component are the same, located on the same plane, and the two photovoltaic components The corresponding positions are located on the same level, and the cleaning device cleans the first photovoltaic module;

A controller connected to the first photovoltaic component and the second photovoltaic component, a memory and an alarm device respectively connected to the controller, wherein the memory stores a preset alarm value and compares the first The power generation of the photovoltaic component and the second photovoltaic component, and an instruction to calculate the difference between the power generation of the first photovoltaic component and the second photovoltaic component, and when the difference is greater than the preset alarm value, the alarm device sends out instructions of the alarm signal, the controller executes the instructions in the memory. the

Preferably, the memory also stores instructions for recording and displaying the power generation data of the first photovoltaic module and the second photovoltaic module;

The photovoltaic system alarm device also includes: a display device connected to the controller and displaying the data of the power generation of the first photovoltaic module and the second photovoltaic module;

A battery that is connected to the controller, memory, display device, alarm device and cleaning device and stores electric energy generated by the first photovoltaic component and the second photovoltaic component. the

Preferably, the device further includes: a casing, the controller, memory, display device and storage battery are located inside the casing, and the first photovoltaic assembly, the second photovoltaic assembly and the cleaning device are located on the top of the casing. the

Preferably, the controller and the memory are integrated together. the

Preferably, the controller and the display device are integrated together. the

Preferably, the device further includes: a light intensity tester connected with the storage battery to test the light intensity. the

Preferably, the angle between the plane where the first photovoltaic component and the second photovoltaic component are located and the horizontal plane is 0° to 90°, inclusive. the

Compared with the prior art, the technical solution provided by the utility model has the following advantages:

The photovoltaic system alarm equipment provided by the utility model, by arranging two photovoltaic modules with the same specifications, makes the two photovoltaic modules on the same plane, and the corresponding positions are on the same horizontal plane, and one of the photovoltaic modules is connected to the cleaning device , in order to keep the surface clean, the impact of dust on the photovoltaic module is almost non-existent, and the other photovoltaic module is not cleaned, and the surface is covered by dust, thereby excluding other factors that cause the power generation of the two photovoltaic modules to be different, so that the dust is blocked become the only factor that causes the power generation of two photovoltaic modules to be different, and then compare the power generation of the two photovoltaic modules to obtain the difference between the two power generation, and then compare the difference with the preset alarm value. If the alarm value is set, the alarm device will alarm and prompt the staff to clean the on-site components of the photovoltaic system; therefore, the equipment provided by the utility model can accurately determine the optimal cleaning time of the components of the photovoltaic system, and improve the efficiency of the photovoltaic system. The power generation capacity reduces the maintenance cost of the photovoltaic system. the

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work. the

Fig. 1 is the connection diagram between the various parts of the photovoltaic system alarm equipment provided by the utility model embodiment one;

Fig. 2 is the connection diagram between the various parts of the photovoltaic system alarm equipment provided by the second embodiment of the utility model;

Fig. 3 is a perspective view of the photovoltaic system alarm device provided by the second embodiment of the utility model. the

Detailed ways

As mentioned in the background art, in the prior art, a combination of personal experience, the actual impact of dust on the appearance of the module, and the power generation of the photovoltaic system is usually used to judge whether to clean the module, and the judgment result is not accurate and reliable. This is due to the uncertainty of personal experience itself, and everyone has a different perception when observing things with the human eye. It is not reliable to judge whether to clean the components only through the influence of dust on the appearance of the components. In addition, factors that affect the power generation of photovoltaic systems In addition to dust shielding, there are also many factors such as climate, temperature, and the condition of the module itself. Therefore, even if the combination of personal experience, the actual impact of dust on the appearance of the module, and the power generation status of the photovoltaic system cannot completely rule out the impact of other factors on Therefore, it is impossible to get the exact best time to clean the photovoltaic system, resulting in two consequences: one is that the components of the photovoltaic system cannot be cleaned in time, and the dust blocking seriously affects the power generation , The second is that the components are frequently cleaned, resulting in a waste of manpower and material costs. the

Based on the above reasons, the utility model provides a photovoltaic system alarm device, including:

The first photovoltaic component and the second photovoltaic component, and the cleaning device connected with the first photovoltaic component, the specifications of the first photovoltaic component and the second photovoltaic component are the same, they are located on the same plane, and the two photovoltaic components The corresponding positions are located on the same level, and the cleaning device cleans the first photovoltaic module;

A controller connected to the first photovoltaic component and the second photovoltaic component, a memory and an alarm device respectively connected to the controller, wherein the memory stores a preset alarm value and compares the first The power generation of the photovoltaic component and the second photovoltaic component, and an instruction to calculate the difference between the power generation of the first photovoltaic component and the second photovoltaic component, and when the difference is greater than the preset alarm, the alarm device issues an alarm signal instructions, the controller executes the instructions in the memory. the

The photovoltaic system alarm equipment provided by the utility model, by setting two photovoltaic components with the same specifications, makes the two photovoltaic components on the same plane, and the corresponding positions are on the same horizontal plane, one of the components is connected with the cleaning device, In order to keep the surface clean, the impact of dust on the component is almost non-existent. The other component is not cleaned, and the surface is covered by dust, thereby excluding other factors that cause the power generation of the two components to be different, so that the dust is the cause of the two components. The only factor for the difference in power generation, and then compare the power generation of the two components to obtain the difference between the two power generation, and then compare the difference with the preset alarm value, if the difference is greater than the preset alarm value, the alarm device will alarm, prompting the staff to clean the components of the photovoltaic system on site; therefore, the equipment provided by the utility model can accurately determine the best cleaning time of the components of the photovoltaic system, which improves the power generation of the photovoltaic system and reduces the System maintenance costs. the

The above is the core idea of the utility model. In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model will be described in detail below in conjunction with the accompanying drawings. the

In the following description, a lot of specific details have been set forth so as to fully understand the utility model, but the utility model can also be implemented in other ways that are different from those described here, and those skilled in the art can do without violating the connotation of the utility model Under the circumstances, similar promotion is done, so the utility model is not limited by the specific embodiments disclosed below. the

Secondly, the utility model is described in detail in conjunction with the schematic diagram. When describing the embodiment of the utility model in detail, for the convenience of explanation, the cross-sectional view showing the equipment structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which is not shown here. The protection scope of the utility model should be limited. In addition, the three-dimensional space dimensions of length, width and depth should be included in actual production. the

Embodiment one

The utility model provides a photovoltaic system alarm equipment, as shown in Figure 1, the equipment specifically includes: a first photovoltaic assembly 101 and a second photovoltaic assembly 102, and a cleaning device 103 connected with the first photovoltaic assembly 101 , the specifications of the first photovoltaic component 101 and the second photovoltaic component 102 are the same, they are located on the same plane, and the corresponding positions of the two components are located on the same horizontal plane; A connected controller 104; a memory 105 and an alarm device 106 respectively connected to the controller 104, wherein the memory 105 stores a preset alarm value, compares the first photovoltaic assembly 101 and the second photovoltaic assembly 102 power generation, and an instruction to calculate the difference between the first photovoltaic component 101 and the second photovoltaic component 102 power generation, and when the difference is greater than the preset alarm, the alarm device 106 sends an alarm signal , the controller 104 executes the instructions in the memory. the

Wherein, the specifications of the first photovoltaic module 101 and the second photovoltaic module 102 are the same, which mainly means that the size, power, type, etc. of the two photovoltaic modules are the same. The first photovoltaic module 101 and the second photovoltaic module 102 can adopt any type of photovoltaic module, including: polycrystalline silicon photovoltaic module, monocrystalline silicon photovoltaic module, thin film battery module, etc., which are not limited in this embodiment; the size of the two photovoltaic modules It can also be selected according to actual needs, such as: 1636mm*992mm, 1956mm*992mm, etc.; the same power of the first photovoltaic module 101 and the second photovoltaic module 102 refers to the initial test power measured under standard test conditions when the photovoltaic module is just produced same. the

Since the equipment provided in this embodiment is applied to the field of the photovoltaic system, the obtained judgment result is a reference for whether to clean the photovoltaic system, so the specifications of the first photovoltaic module 101 and the second photovoltaic module 102 are preferably the same as those of the photovoltaic system. The specifications of the photovoltaic modules on site are consistent to make the results judged by the equipment more accurate. the

The equipment provided in this embodiment makes the specifications and positions of the first photovoltaic module 101 and the second photovoltaic module 102 the same (on the same plane, and the corresponding positions of the two photovoltaic modules are on the same horizontal plane), unique The difference is that the first photovoltaic module 101 is connected with a cleaning device 103 to keep the surface clean. That is to say, when the first photovoltaic module 101 and the second photovoltaic module 102 are working normally, other conditions are exactly the same except that the cleanliness of the surface is inconsistent. The power generation of the first photovoltaic module 101 is almost free from dust due to the clean surface The impact of shading, while the surface of the second photovoltaic module 102 is covered by dust, the power generation is affected. the

By comparing the power generation of the first photovoltaic component 101 and the second photovoltaic component 102, the difference between the power generation of the first photovoltaic component 101 and the second photovoltaic component 102 can be obtained. If the difference is greater than the preset alarm value, it means dust is blocked The impact on the power generation of the second photovoltaic module 102 is relatively large, and the specifications and environmental conditions of the second photovoltaic module 102 are exactly the same as those of the photovoltaic system on site, so the impact of dust shading on the power generation of the photovoltaic system at this time Larger, it is necessary to clean the components on the photovoltaic system site. the

It should be noted that the reason why dust occlusion will affect the power generation of photovoltaic modules is mainly because dust adheres to the light-receiving surface of photovoltaic modules and blocks the light-receiving surface, reducing the light-receiving area of photovoltaic modules and affecting the photovoltaic module. The utilization rate of light energy will reduce the photoelectric conversion efficiency of photovoltaic modules and reduce the power generation of photovoltaic modules. the

In addition, the power generation amounts of the first photovoltaic module 101 and the second photovoltaic module 102 to be compared are the power generation amounts of each unit time or within the same time period. the

Specifically, this embodiment provides experimental data for verifying that dust occlusion reduces the power generation of photovoltaic modules. the

The following table 1 shows the initial data of 16 photovoltaic modules with the same specifications of 235 watts used in the experiment when they were just produced. Among them, 1-8 are the wiped groups, and 9-16 are the unwiped groups. It can be seen that the total initial test power of the two groups It is exactly the same as the mean value, thus excluding the factors that cause the power generation of photovoltaic modules of the two groups to be different due to the photovoltaic modules themselves. the

Table 1

The data in Table 2 are the wiping group and the non-wiping group under the same environmental conditions, the photovoltaic modules of the wiping group are cleaned every 7 days, while the photovoltaic modules of the non-wiping group are never cleaned, the measured total of each group Power generation and comparison results, since the photovoltaic modules of the two groups are under the same environmental conditions, the difference in environmental conditions is not the cause of the difference in the power generation of the photovoltaic modules of the two groups. The percentages in Table 2 refer to the ratio of the difference between the power generation of the wiped group and the power generation of the non-wiped group to the power generation of the wiped group. the

Table 2

It can be seen from the above table that the initial test power of the photovoltaic modules in the wiped group and the unwiped group is the same, and under the same environmental conditions, the wiped group is wiped regularly, and the unwiped group is never wiped. The average power generation power is 3.12% higher, so dust occlusion is a factor that reduces the power generation of photovoltaic system components. the

In this embodiment, the first photovoltaic component 101 and the second photovoltaic component 102 convert the absorbed light energy into electrical energy. Since the first photovoltaic component 101 is cleaned by the cleaning device 103 connected to it, it is not affected by surface dust, so the first The power generation of the photovoltaic assembly 101 and the second photovoltaic assembly 102 are different; the electric energy generated by the two is output to the controller 104, and the controller 104 executes the instructions of the memory 105 connected to it, comparing the first photovoltaic assembly 101 and the second photovoltaic assembly 101 The power generation of the photovoltaic module 102, calculate the difference between the two, and compare the difference with the preset alarm value preset in the memory 105, if the difference is greater than the preset alarm value, the controller 104 controls the alarm device 106 Send an alarm signal to remind the staff that the photovoltaic modules on the photovoltaic system site need to be cleaned. the

It should be noted that, if the difference is greater than the preset alarm value, the on-site photovoltaic modules need to be cleaned, because the difference is greater than the preset alarm value, which means that the influence of dust on the second photovoltaic module 102 is greater. The equipment in this example is located at the site of the photovoltaic system, and the environment where the second photovoltaic module 102 is located is the same as that of the photovoltaic modules at the site of the photovoltaic system. Therefore, it can be deduced that dust shielding has a great impact on the overall power generation of the photovoltaic system, and it is necessary to control the site of the photovoltaic system. Components are cleaned. the

Moreover, this embodiment only judges whether the photovoltaic module needs to be cleaned by comparing the preset alarm value with the difference between the power generation of the first photovoltaic module 101 and the second photovoltaic module 102, but the utility model is not limited thereto, and can also use The following method: through calculation, the percentage of the difference between the two photovoltaic modules accounting for the power generation of the first photovoltaic module 101 is obtained. Correspondingly, the preset alarm value is also changed to a percentage obtained by using the same calculation method. By comparing the two percentages, the same It can be judged whether to clean the photovoltaic modules on the site of the photovoltaic system; based on the idea of the above comparison of the utility model, the expansion and extension of the idea are all within the protection scope of the utility model. the

In addition, the equipment provided in this embodiment is applied to the site of the photovoltaic system, and the number and distribution of the equipment can be selected according to the actual situation of the site. When the area of the photovoltaic system site is small, only one measuring device can be installed. When the site area is large, multiple devices can be set up and evenly distributed on the site to ensure the accuracy of the judgment results. the

After cleaning the entire photovoltaic module on site, it is necessary to clean the second photovoltaic module 102 of the device in this embodiment, so that the device can re-record the power generation of the two modules to ensure the accuracy of the judgment result. the

The preset alarm value of the memory 105 can be set according to comprehensive considerations such as the photovoltaic system owner's requirements for power generation, air quality, and climate conditions. For example, if the demand for power generation is large, the preset alarm value can be set to The alarm value is set lower, so that when the degree of dust cover is low, the device will send out an alarm signal, prompting to wipe, so as to ensure a higher power generation; if you want to save costs, you can set the preset alarm value higher High, the number of cleanings is less, which can reduce the cost of cleaning and maintenance of photovoltaic systems. the

Moreover, in order to facilitate different regions and end users to more flexibly set the preset alarm value according to the actual situation, the memory 105 preferably incorporates an alarm automation system in parallel with manual setting and computer setting. Among them, the advantage of manual setting is that it can be manually set according to the climate and weather conditions in different periods, as well as the income of photovoltaic system power stations. If the impact on the overall power generation is small, the preset alarm value can be manually set larger; computer setting means that the preset alarm value is a fixed parameter, and its advantage is that it can save labor costs. the

In addition, the cleaning device 103 can clean the first photovoltaic module 101 regularly or irregularly according to the actual weather conditions, as long as the surface of the first photovoltaic module 101 is kept clean. the

In this embodiment, the cleaning device 103 is preferably an automatically controlled component cleaning device, which realizes the automation of the cleaning process and does not require manual operation during cleaning, thereby ensuring the safety, stability and accuracy of the equipment. the

More preferably, the cleaning device 103 can intelligently clean the first photovoltaic module 101. The specific implementation method is: the cleaning device includes a brush body, a water pipe and a water storage device, and the brush body and the water storage device are connected together through a water pipe. And the cleaning device should be connected with the controller; the power generation data per unit time when the surface of the first photovoltaic module is cleaned and the preset cleaning value are stored in the memory, and there is also stored a comparison between the power generation per unit time of the first photovoltaic module and its surface cleaning time. The power generation data per unit time, calculate the difference between the two, and compare the difference with the preset cleaning value. If the difference is greater than the preset cleaning value, then the command to clean the first photovoltaic module will be executed by the controller. The cleaning device is controlled to clean the first photovoltaic module to keep its surface clean, and the power generation will not be affected by dust. the

Example two

In order to make the function of the equipment more perfect and the operation more convenient, on the basis of the structure provided in the first embodiment, this embodiment selectively adds devices such as a display device, a storage battery, a casing, and a light intensity tester. the

As shown in Figure 2, it is a diagram of the connection relationship between the various parts of the photovoltaic system alarm equipment provided by this embodiment. The equipment also includes: connecting with the controller 104, displaying the 2. A display device 207 for the data of the power generation of the photovoltaic module 102;

Connected with the controller 104 , memory 105 , display device 207 , alarm device 106 and cleaning device 103 , is a storage battery 208 for storing electric energy generated by the first photovoltaic assembly 101 and the second photovoltaic assembly 102 . the

The memory 105 of the device provided in this embodiment also stores instructions for recording and displaying the power generation data of the first photovoltaic module 101 and the second photovoltaic module 102; the controller 104 executes the instructions of the memory 105 to record the first photovoltaic Component 101 and the second photovoltaic component 102 power generation data, and control the display device 207 to display the recorded data;

Further, the display device can not only be used to display the data of power generation, but also can be used to display the comparison result of the power generation of two components. To realize this function, it is necessary to store and display the first photovoltaic component 101 and the second photovoltaic component in the memory 105. 102, and the controller 104 controls the display device 207 to display; the staff can know the power generation of the first photovoltaic module 101 and the second photovoltaic module 102 in real time by observing the data displayed by the display device, so that the equipment The use is more intuitive and convenient. the

In this embodiment, the storage battery 208 can store the electric energy generated by the first photovoltaic assembly 101 and the second photovoltaic assembly 102, and through its own connection with the controller 104, memory 105, display device 207, alarm device 106 and cleaning device 103 , deliver electric energy to them, make controller 104, memory 105, display device 207, alarm device 106 and cleaning device 103 need not additionally connect external power supply;

It can be seen that the photovoltaic system alarm device provided in this embodiment is an independent system, and the electric energy generated by the two components provides electric energy for the controller 104, memory 105, display device 207, alarm device 106 and cleaning device 103 of the device, Make sure they work smoothly;

In addition, in order to make the voltage of the electric energy supplied by the storage battery more stable and ensure the safe and stable operation of each component of the equipment, a voltage stabilizer can also be installed in the controller 104, and the voltage stabilizer can adjust the current flowing through the controller 104, so that The voltage maintains a stable output and is stored in the battery; the voltage regulator is composed of a voltage regulating circuit, a control circuit and a servo motor, etc. When the voltage of the electric energy generated by the first photovoltaic module 101 and the first photovoltaic module 102 changes, the control circuit performs Sampling, comparison, amplification, and then drive the servo motor to rotate, so that the position of the carbon brush of the voltage regulating circuit is changed, and the output voltage is kept stable by automatically adjusting the coil turns ratio. the

In order to maximize the elimination of other factors that cause the power generation of the two components to be different, as shown in Figure 3, it is a perspective view of the device provided in this embodiment. The device preferably also includes: a housing 209, the controller 104, the memory 105, The display device 207 and the storage battery 208 are located in the casing 209 , and the first photovoltaic assembly 101 , the second photovoltaic assembly 102 and the cleaning device 103 are located on the top of the casing 209 . the

The casing 209 encloses the controller 104, memory 105, display device 207 and storage battery 208 of the device inside, and is the first photovoltaic module 101, the second photovoltaic module 102, the cleaning device 103, the controller 104, the memory 105, the display device The components such as 207 and battery 208 provide fixed brackets and connecting cables, etc., which ensure the safe and stable operation of each component of the equipment, and eliminate the influence of other factors on the power generation of the two components. the

In this embodiment, the housing 209 is preferably a three-dimensional device whose upper surface is an inclined plane. The first photovoltaic assembly 101 and the second photovoltaic assembly 102 are fixed side by side on the upper inclined plane. Angle) ranges from 0° to 90°, including the endpoint values; in order to make the light-receiving surfaces of the two components receive light energy to the maximum, it is necessary to make the slope where the two components are located be as perpendicular as possible to the direction of light incidence, so the first photovoltaic component The included angle between the plane where 101 and the second photovoltaic component 102 are located and the horizontal plane is more preferably 20 degrees to 70 degrees, inclusive. the

Since the device provided in this embodiment is an independent system without connecting components such as external power supply or cables, the device is easy to move, and the movement of the device will not change the system parameters. The so-called system parameter change means that if the device needs to be connected to an external cable, etc., when the device is moved, the cable needs to be disassembled and installed again, or the length of the cable should be increased, which will inevitably lead to equipment errors and operational errors. etc., which affect the final judgment result of the device. Therefore, the device provided by this embodiment is moved to another location without disassembly and reinstallation, which ensures the reliability of the measured data. the

In addition, in this embodiment, preferably, the controller 104 and the memory 105 can be integrated together, and the controller 104 and the display device 207 can be integrated together. the

Utilizing the independence of the equipment provided by this embodiment, the functions of the equipment can be expanded according to the actual situation, for example: installing a light intensity tester for measuring light intensity, a wind direction tester for measuring wind direction, and a wind force tester for measuring wind force on the equipment Such devices can detect the light intensity, wind direction, and wind force of the photovoltaic system on site, and provide more data for analyzing the power generation of the photovoltaic system; the installed device is connected to the battery, that is, the power is provided by the equipment itself without consumption External energy, so as to achieve multi-purpose, cost saving; and, the added components are provided by the shell 209 to support and fix the bracket and so on. the

The photovoltaic system alarm equipment provided by the embodiment of the utility model, by setting two photovoltaic modules with the same specifications, makes the two photovoltaic modules on the same plane, and the corresponding positions are on the same horizontal plane, one of the photovoltaic modules and the cleaning device If the other photovoltaic module is not cleaned, the surface is covered by dust, which eliminates other factors that cause the power generation of the two photovoltaic modules to be different, so that the dust is blocked Become the only factor that causes the power generation of two photovoltaic modules to be different, and then compare the power generation of the two modules, calculate the difference between the two, and compare the difference with the preset alarm value, if the difference is greater than the preset alarm value, the alarm device of the equipment will alarm and prompt the staff to clean; therefore, the equipment provided by the utility model can accurately judge the best cleaning time of the components of the photovoltaic system, improve the power generation of the photovoltaic system, and reduce the cost of the photovoltaic system. maintenance costs. the

Further, the equipment provided in this embodiment is an independent system without connecting external power supply or cables and other components, so the equipment is easy to move. The system parameters are changed to ensure the reliability of the measured data. the

At the same time, the equipment provided by this embodiment also has rich expandability, installs equipment with other functions, and provides power for the installed equipment by itself, without consuming external energy, and has the advantages of multi-purpose and cost-saving. the

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person familiar with the art, without departing from the scope of the technical solution of the utility model, can use the method and technical content disclosed above to make many possible changes and modifications to the technical solution of the utility model, or modify it into an equivalent change, etc. effective example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are still within the protection scope of the technical proposal of the present invention. the

Claims (7)

1. A photovoltaic system alarm device, characterized in that, comprising: The first photovoltaic component and the second photovoltaic component, and the cleaning device connected with the first photovoltaic component, the specifications of the first photovoltaic component and the second photovoltaic component are the same, they are located on the same plane, and the two photovoltaic components The corresponding positions are located on the same level, and the cleaning device cleans the first photovoltaic module; A controller connected to the first photovoltaic component and the second photovoltaic component, a memory and an alarm device respectively connected to the controller, wherein the memory stores a preset alarm value and compares the first The power generation of the photovoltaic component and the second photovoltaic component, and an instruction to calculate the difference between the power generation of the first photovoltaic component and the second photovoltaic component, and when the difference is greater than the preset alarm value, the alarm device sends out instructions of the alarm signal, the controller executes the instructions in the memory. the 2. The device according to claim 1, wherein the memory also stores instructions for recording and displaying the power generation data of the first photovoltaic module and the second photovoltaic module; The photovoltaic system alarm device also includes: a display device connected to the controller and displaying the data of the power generation of the first photovoltaic module and the second photovoltaic module; A battery that is connected to the controller, memory, display device, alarm device and cleaning device and stores electric energy generated by the first photovoltaic component and the second photovoltaic component. the 3. The device according to claim 2, further comprising: a casing, the controller, the memory, the display device and the storage battery are located in the casing, the first photovoltaic assembly, the second photovoltaic assembly and the cleaning The device is located on top of the housing. the 4. The device of claim 3, wherein the controller and the memory are integrated. the 5. The device according to claim 4, wherein the controller and the display device are integrated together. the 6 . The device according to claim 5 , further comprising: a light intensity tester connected with the storage battery to test the light intensity. 7 . the 7 . The device according to claim 1 , wherein the angle between the plane where the first photovoltaic component and the second photovoltaic component are located and the horizontal plane is 0° to 90°, inclusive. the

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