TWI729295B - Method for monitoring solar power plant - Google Patents

Abstract

A solar power plant monitoring method has steps as follows: determining a region; according to electricity of an electricity buying data which solar power plants in the region sell, calculating a clear sky index of each solar power plant in the region, and according to the clear sky indices of the solar power plants in the region, calculating the a regional average clear sky index, wherein the clear sky index is defined as a ration between the electricity of an electricity buying data which the solar power plant in the region sells and the ideal generated electricity of the solar power plant, and the ideal generated electricity of the solar power plant corresponds to a location and time of the solar power plant; compare the clear sky index of each solar power plant in the region to the regional average clear sky index; and according a comparison result, determining whether each solar power plant in the region has abnormality.

Description

Solar power station monitoring method

The present invention relates to a solar power station monitoring method, in particular to a solar power station monitoring method that monitors whether the solar power station has an abnormal condition of low power generation efficiency or suspected power stealing according to power purchase data.

Generally speaking, in addition to supplying part of the electricity to the suppliers themselves, solar power stations will sell the excess electricity to the power company to make a profit. In the case of Taiwan Power Company, the electricity generated by purchasing solar power plants is 5 to 6 yuan per kilowatt-hour, while the electricity sold to consumers is 3 to 4 yuan per kilowatt-hour. Therefore, in order to avoid the possibility of unscrupulous operators stealing the electricity from the Taiwan Power Company and reselling it back to the Taiwan Power Company in order to obtain profits from the intermediate spread, or to avoid the low power generation efficiency of some solar power stations, it is necessary to provide a method that can know whether the solar power station is abnormal Solar power station monitoring method.

A solar power station monitoring method in the prior art is to upload the current power generation of the solar power station to the server platform that manages the solar power station, and compare the theoretical value or the previously uploaded power generation with the current power generation. The concept of using the power generation of other solar power stations in the area as the evaluation standard is not considered, so the solar power station monitoring method cannot accurately determine whether the solar power station is abnormal. Furthermore, the above-mentioned solar power station monitoring method must take the current power generation of the solar power station The amount is uploaded to the management platform of the solar power station, so additional communication equipment and measurement equipment are required, which increases the equipment cost relatively.

Various other solar power station monitoring methods in the prior art also include the method of judging whether the solar power station is abnormal by measuring the current generated by the installed current measuring device, and the power generation generated by the installed reference module with a clean surface. The method of comparing benchmarks to determine whether the solar power station is abnormal or not, and the method of determining whether the solar power station is abnormal or not through the conversion efficiency evaluated by the installed sensor module. However, the above-mentioned other various solar power station monitoring methods require additional measurement equipment, thereby relatively increasing equipment costs. In addition, the above-mentioned various solar power station monitoring methods have not considered the concept of using the power generation of other solar power stations in the area as the evaluation standard, so there is still a problem of inaccuracy.

Therefore, in order to overcome the shortcomings of the prior art, the embodiments of the present invention provide a solar power station monitoring method and device, which does not require additional measurement devices and communication devices in the solar power station, and considers the power generation of each solar power station in the area. The quantity is used as the evaluation standard (that is, the regional average clear sky index is used as the evaluation standard).

Based on at least one of the foregoing objectives, an embodiment of the present invention provides a solar power station monitoring method. A solar power station monitoring device performs the following steps, which includes: obtaining power purchase data of each solar power station in the area; Calculate the clear sky index of each solar power station in the area from the electricity purchase data in the power purchase data of each solar power station in the area, and calculate the regional average clear sky index based on the clear sky index of each solar power station in the area, The clear sky index is defined as the power purchase in the power purchase data of the solar power station and the power purchase of the solar power station. The ratio of the theoretical power generation, and the theoretical power generation of the solar power station is related to the location and time of the solar power station; comparing the clear sky index of each solar power station in the area with the regional average clear sky index; and According to the comparison result, determine whether each solar power station in the area is abnormal.

Optionally, in the embodiment of the present invention, the solar power plant monitoring method further includes: transmitting the abnormal information to a maintenance server or a notification server.

Optionally, in the embodiment of the present invention, the regional average clear sky index is an average value or a weighted average value of multiple clear sky indexes of multiple solar power stations in the area, and one or more of the standard deviations are too large The clear sky index of the solar power plant is excluded from the calculation of the regional average clear sky index.

Optionally, in the embodiment of the present invention, when the clear sky index of the solar power stations in the area is greater than the average clear sky index of the area, and the difference value is greater than the first abnormal threshold value, the abnormal information is transmitted to The notification server; when the clear sky index of the solar power stations in the area is less than the average clear sky index of the area, and the difference is greater than the second abnormality threshold, the abnormal information is sent to the maintenance server Device.

Optionally, in the embodiment of the present invention, the solar power station monitoring method further includes: judging the status of each solar power station in the area according to the clear sky index of each solar power station in the area and a plurality of historical clear sky indexes; And according to the judgment result, judge whether each solar power station in the area is abnormal.

Optionally, in the embodiment of the present invention, the solar power station monitoring method further includes: predicting the solar power station based on the clear sky index and multiple historical clear sky indexes of each solar power station in the area. The future power generation capacity of each solar power station in the area; and the dispatching rules are determined according to the future power generation capacity of each solar power station in the area.

Optionally, in the embodiment of the present invention, the first abnormality threshold is equal to the second abnormality threshold. .

Optionally, in the embodiment of the present invention, the regional average clear sky index is the weighted average value of the multiple clear sky indexes of the multiple solar power stations in the region, and the average clear sky index is the weighted average value of the multiple solar power stations in the region. A plurality of areas determines a plurality of weights, and an average value of the weights is calculated according to the plurality of weights and the plurality of clear sky indexes.

Optionally, in the embodiment of the present invention, the repair end server is a server of a solar energy equipment repairer, and the notification end server is a server of a power or energy audit unit.

Based on at least one of the foregoing objectives, an embodiment of the present invention also provides a solar monitoring device, which is configured to include: a power purchase data acquisition module, a clear sky index calculation module, a comparison module, and a decision-making module to perform the foregoing Solar power station monitoring method.

In short, the solar power station monitoring method and device provided by the embodiments of the present invention can not only reduce additional equipment costs, but also improve the monitoring accuracy of the solar power station.

1: Solar power system

111~11K: Solar power station

12: Power company

131~13N: power terminal

2: Solar power plant monitoring system

21: Power purchase server

221~22K: sales terminal device

23: Repair server

24: Notification server

3: Power purchase server

31: Processing Unit

32: storage unit

33: Communication unit

34: memory unit

35: input/output unit

4: Solar power station monitoring device

41: Purchase electricity data acquisition module

42: Clear sky index calculation module

43: Comparison module

44: Decision Module

S61~S69: Step flow

Fig. 1 is a schematic diagram of a solar power generation system according to an embodiment of the present invention.

Fig. 2 is a block diagram of a solar power plant monitoring system according to an embodiment of the present invention.

Fig. 3 is a block diagram of a power purchase server according to an embodiment of the present invention.

Fig. 4 is a block diagram of a solar power station monitoring device according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of a screen provided to a user by the solar power plant monitoring device according to an embodiment of the present invention.

Fig. 6 is a schematic flowchart of a solar power station monitoring method according to an embodiment of the present invention.

In order to fully understand the purpose, features and effects of the present invention, the following specific embodiments are used in conjunction with the accompanying drawings to give a detailed description of the present invention. The description is as follows.

The embodiment of the present invention provides a solar power plant monitoring method, which is based on the power purchase data of the power center from each solar power station (Note: The power purchase data of the solar power plant is defined as the purchase of electricity purchased by the power company from the solar power plant per unit of time. The amount of electricity data, and the unit time is for example a day), to calculate the clear sky index and regional average clear sky index of each solar power station in the determined area, where the clear sky index is the electricity purchased from the electricity purchase data (That is, the ratio of the amount of electricity sold by the solar station to the power company) and the theoretical power generation of this solar power station (Note: The theoretical power generation of the solar power station is related to the location and time). Then, the clear sky index of each solar power station in the area is compared with the regional average clear sky index to determine whether each solar power station is abnormal (such as low power generation efficiency or suspected electricity stealing) based on the comparison result.

Preferably, when the clear sky index of the solar power plants in the area is higher than the regional average clear sky index, and the difference value is greater than the first abnormality threshold, the abnormal information is further transmitted to the notification server of the power or energy inspection unit to To enable the power or energy inspection unit to further investigate whether the abnormal solar power stations in the area are really stealing electricity; when the clear sky index of the solar power stations in the area is lower than the regional average clear sky index, and the difference value is greater than the second abnormal threshold value, then go further Anomaly information Provide the repair end server of the solar equipment repairer, so that the solar equipment repairer can further contact the operators of abnormal solar power plants in the area and ask whether they need maintenance services.

The above-mentioned first abnormal threshold value may be the same or different from the second abnormal threshold value, and the present invention is not limited thereto. Furthermore, the above-mentioned solar energy equipment repairer may be the power company itself, or a solar energy equipment repairer that is outsourced or cooperated by the power company. In addition, the regional average clear sky index can be the average or weighted average of the clear sky indexes of all solar power stations in the area, and the clear sky index of solar power stations with excessive standard deviations is excluded from the calculation of the regional average clear sky index.

Furthermore, in order to improve the ability of abnormality monitoring, the solar power station monitoring method can compare the current clear sky index of the solar power stations in the area with the average value of the historical clear sky index to determine whether the solar power station is abnormal. In addition, the solar power plant monitoring method has other steps to predict the generation of electricity in the next few hours, days or months to determine the dispatch rules, so as to perform better power dispatch and make the entire power grid more stable.

On the other hand, embodiments of the present invention also provide a solar power plant monitoring device, which can be implemented by hardware circuits (for example, field programmable logic gate array (FPGA) or special application integrated circuit (ASIC)) or software with computing devices. Realize, to configure the purchase of electricity data acquisition module, clear sky index calculation module, comparison module and decision-making module, etc., so as to realize and execute the above-mentioned solar power station monitoring method. Hereinafter, the solar power station monitoring method and device according to the embodiments of the present invention will be further introduced.

First, please refer to FIG. 1, which is a schematic diagram of a solar power generation system according to an embodiment of the present invention. The solar power generation system 1 includes solar power stations 111-11K, power companies 12, and power users 131-13N, where K and N are integers greater than or equal to 2, and may be the same or different from each other. The solar power stations 111~11K are electrically connected to the power company 12 through multiple cables, and the solar power stations 111~11K can feed and sell the electricity they generate to the power company 12. The power company 12 is used for electrical connection through multiple cables The power terminals 131~13N are used by the power company 12 to feed and sell the purchased or self-generated electricity to the power users 131~13N, where the power terminals 131~13N can all be in the same power grid or dispersed in different power grids.

In the embodiment of FIG. 1, each of the solar power stations 111-11K is a solar power station constructed with solar panels and converting solar energy into electric energy, and it can be held by a private business owner. In Figure 1, the solar power stations 111~111K can be distributed in multiple areas or all in the same area. For example, solar power stations 111 and 112 are located in Taipei City, and solar power station 11K is located in Kaohsiung City. The power company 12 purchases electricity from the solar power station 111~11K, so it will have the power purchase data of the solar power station 111~11K, where the power purchase information is obtained from the scale change on the solar power meter 111~11K. For example, by manually or automatically copying the readings of the solar power meters from 111 to 11K, the daily electricity purchase data of each solar power station from 111 to 11K can be obtained. In addition, in other embodiments, the electricity purchase information may be the hourly, weekly, or monthly electricity purchase information of each solar power station 111-11K, and the present invention is not limited thereto.

Next, please refer to FIG. 2 at the same time. FIG. 2 is a block diagram of a solar power station monitoring system according to an embodiment of the present invention. The purchase end server 21 of the power company, the sales end devices 221-22K of multiple solar power stations, the repair end server 23 of the solar equipment repairer, and the notification end server 24 of the power or energy audit unit constitute a solar power station. Monitoring system 2. The power purchase server 21 is communicatively connected to the power selling devices 221-22K, the maintenance server 23 and the notification server 24, and the maintenance server 23 is communicatively connected to the power selling devices 221-22K.

The power selling terminal devices 221-22K may be servers or computer equipment constructed by the operators of solar power plants. When the power purchase server 21 determines that a solar power station is abnormal based on its power purchase data, the power purchase server 21 can send the abnormal information to the maintenance server 23 and the notification server according to the abnormal condition indicated by the abnormal information. 24, and selectively transmit the abnormality information to the power selling terminal device 22i of the solar power station corresponding to the abnormality (i is an integer from 1 to K).

The power purchase server 21 can determine a region (for example, a specific county, city, township, town, district, or a specific range of regions), where the region is selected by user input or automatically selected through a clustering algorithm, and uses The person can be the engineer of the electric power company or the operator of the solar power station 111~11K. The power purchase server 21 can calculate the clear sky index and the regional average clear sky index based on the power purchase data of each solar power station in the area.

Then, the power purchase server 21 compares the clear sky index of each solar power station with the regional average clear sky index. If the clear sky index of the solar power station is greater than the regional average clear sky index and exceeds the first abnormal threshold, the solar power station may be suspected of power theft. Therefore, the power purchase server 21 sends the notification server 24 of the power or energy inspection unit Send abnormal information to investigate abnormal solar power stations with power supply or energy inspection units. If the clear sky index of the solar power plant is less than the regional average clear sky index and exceeds the second abnormal threshold, the solar power plant may have solar equipment damaged or fouled resulting in low power generation efficiency, so the power purchase server 21 will repair the solar equipment The repair end server 23 of the supplier sends abnormal information for the solar equipment repairer to provide services of cleaning, repairing, angle correction of solar panels, or removing nearby shelters to operators of abnormal solar power stations.

Furthermore, as mentioned above, the abnormal information is selectively transmitted to the sales terminal device 22i of the solar power station corresponding to the abnormality. Therefore, if the design chooses not to transmit the abnormal information to the sales terminal device of the solar power station corresponding to the abnormality. 22i, there is no need to connect the power selling terminal device 221-22K to the power purchasing terminal server 21. In addition, the above-mentioned first and second difference thresholds can be designed to be the same or different, and the present invention is not limited thereto.

Next, the calculation details of the clear sky index will be further explained. The clear sky index is defined as the ratio of the power purchased from the power purchase data to the theoretical power generation of the solar power station. The electricity purchase information can be obtained by transcribing the electricity meter that the solar power station feeds to the power company every unit time (unit time can be hour, day, week or month). In other words, the electricity purchase information has the solar power station in each unit. Time Actual power generation. The theoretical power generation of a solar power station can be based on the air mass AM and the height h of the solar power station, the sun elevation angle α, the sun azimuth angle θ, the solar module inclination angle β, and the solar energy model. The azimuth angle ψ facing the group is determined.

Further, the amount of insolation received by the solar modules of the solar power station can be expressed as S _module =S _incident [cosα*sinβ*cos(ψ-θ)+sinα*cosβ], where the solar altitude angle α is related to the solar azimuth angle θ In terms of the latitude and time of the solar power station, and the azimuth angle ψ facing the solar module is related to the solar power station being located in the northern or southern hemisphere, S _incident is the total insolation I _G , which is the direct radiation intensity I _D (unit: kW/m ² ), and the direct irradiation intensity I _D can be expressed as I _D =1.353*[(1-ah)*0.7 ^EXP_AM +ah], where a is 0.14, h represents altitude (in kilometers), and EXP_AM=AM ^0.678 . The air quality AM can be expressed as AM=1/cosζ, where ζ is the zenith angle, that is, the angle between the sunlight and the normal to the ground.

In addition, the theoretical power generation of the solar power station _{is linearly related to the solar energy received by the solar modules of the solar power station S module} , so by calculating the solar energy received by the solar modules of the solar power station S _module , the solar power station can be calculated The theoretical power generation. Since the theoretical power generation of the solar power station has considered the factor of height h, and the power purchase corresponding to the power purchase data of the solar power station is also related to the height h, the clear sky index of the solar power station has evened out the influence of the height factor. Can be used as an accurate indicator of effectiveness evaluation.

Next, the calculation details of the regional average clear sky index are further explained. The regional average clear sky index can be the average of the clear sky indexes of all solar power stations in the area, but the clear sky index of solar power stations with too large standard deviation (or variance) is excluded from the calculation of the regional average clear sky index. In addition, the regional average clear sky index can also be the weighted average value of the clear sky indexes of all solar power stations in the region, where the weight value can be the area ratio of the solar power stations in the region. For example, if the determined area has four solar power stations (with clear sky index CSI ₁ ~ CSI ₄ ), and the area ratios occupied by the area are 0.25, 0.125, 0.125, and 0.5, the average clear sky index of the area is 0.25* CSI ₁ +0.125*CSI ₂ +0.125* CSI ₃ +0.5* CSI ₄ .

Then, please refer to FIG. 3, which is a block diagram of the power purchase server according to an embodiment of the present invention. The solar power plant monitoring method described in the embodiment of the present invention is mainly executed by the power purchase server 3, and without loss of generality, the power purchase server 3 may be a general computer device and cooperate with software code to realise. The power purchase server 3 includes a processing unit 31, a storage unit 32, a communication unit 33, a memory unit 34, and an input/output unit 35, wherein the storage unit 32, the communication unit 33, the memory unit 34 and the input/output unit 35 are electrically connected Processing unit 31. The storage unit 32 stores software program codes and electricity purchase data, and the processing unit 31 reads the program codes and obtains electricity purchase data, and uses the memory unit 34 as a temporary storage for program execution, so as to execute the aforementioned solar power plant monitoring method. The communication unit 33 is used to make the power purchase end server communicate with the sales end device, and the maintenance end server and the notification end server to communicate with each other. The input/output unit 35 may provide an input/output interface for users who use the power purchase server to perform operations, such as determining the selected area.

After that, please refer to FIG. 4, which is a block diagram of a solar power station monitoring device according to an embodiment of the present invention. Generally speaking, the power purchase server 3 can be configured to include the solar power station monitoring device 4 with software code. The solar power station monitoring device 4 includes the power purchase data acquisition module 41, the clear sky index calculation module 42, and the comparison module. The group 43 is connected to the decision-making module 44, wherein the clear sky index calculation module 42 is electrically connected to the electricity purchase data acquisition module 41 and the comparison module 43, and the decision-making module 44 is electrically connected to the comparison module 43. Please note here that the above-mentioned solar power station monitoring device 4 can be implemented by hardware circuits such as FPGA or ASIC, in addition to being executed by software in cooperation with general computer devices.

The electricity purchase data module 41 is used to obtain electricity purchase data of each solar power station in the area. The clear sky index calculation module 42 calculates the clear sky index of each solar power station in the area based on the electricity purchase data of each solar power station in the area, and according to the clear sky index of each solar power station in the area Calculate the regional average clear sky index. Then, the comparison module 43 compares the clear sky index of each solar power station in the area with the regional average clear sky index. Then, the decision-making module 44 determines whether there is an abnormality in the solar power plant in the area according to the comparison result, and transmits the abnormality information to the corresponding object, such as the maintenance server or the notification server.

Next, please refer to FIG. 5, which is a schematic diagram of a screen provided to a user by the solar power station monitoring device according to an embodiment of the present invention. The solar power station monitoring device also includes a screen providing module (not shown in the diagram), which can display the clear sky index of the solar power station in the area selected by the user, the power generation (corresponding to the power purchase data of the power purchase data) and the regional average Clear sky index, so that users can intuitively know whether the solar power station is abnormal. Taking the example in Figure 5, the clear sky index of the solar power station on February 11, 2018 is too much greater than the regional average clear sky index, which may indicate that the solar power station is suspected of stealing electricity; and the clear sky index of the solar power station on February 12, 2018 is less than If the regional average clear sky index is too high, it may indicate that the solar power station’s power generation efficiency is too low, and it may require cleaning, maintenance or removal of shelters.

Finally, please refer to FIG. 6, which is a schematic flowchart of a solar power station monitoring method according to an embodiment of the present invention. The solar power station monitoring method can be executed by the above-mentioned solar power station monitoring device, however, the embodiment of the present invention is not limited thereto. First, in step S61, an area is determined. The area can be manually input by the user or determined by the system through a clustering algorithm. That is, the method of determining the area is not intended to limit the present invention. Next, in step S62, the power purchase data of each solar power station in the area is obtained.

After that, in step S63, calculate the clear sky index of each solar power station in the area based on the power purchase data of each solar power plant in the corresponding area, and calculate the regional average clear sky index based on the clear sky index of each solar power station in the area . Next, in step S64, the area average clear sky index is compared with the clear sky index of each solar power station in the area. Then in step S65, Perform related actions based on the comparison results. For example, if the regional average clear sky index is much larger than the clear sky index of a certain solar power station in the area, it means that a certain solar power station in the area has a problem of low power generation efficiency, so the abnormal information needs to be further sent to the maintenance server. For example, if the regional average clear sky index is much smaller than the clear sky index of a certain solar power station in the area, it means that a certain solar power station in the area has a suspected electricity theft problem, so the abnormal information needs to be further sent to the notification server.

Furthermore, in order to improve the ability of abnormal monitoring, the solar power station monitoring method can further step S66 and S67. In step S66, the status of each solar power station in the area is judged according to the current clear sky index and the historical clear sky index of each solar power station in the area. For example, the average value of the historical clear sky index of the solar power station is calculated, and the average value is compared with the current clear sky index of the solar power station to judge the status of the solar power station. Next, in step S67, related actions are performed based on the judgment result. For example, if the current clear sky index of the solar power station is suddenly lower than the average value of the historical clear sky index of the solar power station, it may be that the solar power station has a problem of low power generation efficiency and requires further maintenance. By using the average of the regional average clear sky index and the historical clear sky index as the standard for monitoring whether the solar power station is abnormal, the monitoring accuracy of the solar power station monitoring method can be improved.

In addition, in order to perform better power dispatch and make the entire power grid more stable, the solar power station monitoring method further includes steps S68 and S69. In step S68, according to the current clear sky index and historical clear sky index of each solar power station in the area, predict the future power generation of each solar power station in the area in several time units (for example, hour, day, week, or month) in the future. In step S69, the dispatching rules are determined according to the future power generation of each solar power station in the area, so as to perform better power dispatch and make the entire power grid more stable.

Accordingly, the solar power station monitoring method and device provided by the embodiments of the present invention can eliminate the need for additional measurement devices and communication devices in the solar power station, and consider the power generation of each solar power station in the area as the evaluation standard (that is, , Using the regional average clear sky index as the evaluation standard), therefore, it can not only reduce additional equipment costs, but also improve the monitoring accuracy of solar power plants. Furthermore, the embodiment of the present invention further transmits the abnormal information of the solar power plant suspected of stealing electricity to the power or energy inspection unit for investigation, or transmits the abnormal information of the solar power plant with low power generation efficiency to the monitoring results. The solar equipment repairer, therefore, the present invention has the effect of reducing losses and avoiding fraud by the power company, and provides an opportunity for the solar equipment repairer to provide services to customers.

The present invention has been disclosed in preferred embodiments above, but those skilled in the art should understand that the above-mentioned embodiments are only used to describe the present invention and should not be construed as limiting the scope of the present invention. It should be noted that all changes and substitutions equivalent to the foregoing embodiments should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be defined by the scope of the patent application.

2: Solar power plant monitoring system

21: Power purchase server

221~22K: sales terminal device

23: Repair server

24: Notification server

Claims (8)

A solar power station monitoring method is performed by a solar power station monitoring device, which includes: obtaining power purchase data of each solar power station in the area; according to the power purchase information corresponding to the power purchase information of each solar power station in the area Electricity calculates the clear sky index of each solar power station in the region, and calculates the regional average clear sky index based on the clear sky index of each solar power station in the region, where the clear sky index is defined as the power purchase of the solar power station The ratio of the purchased power in the data to the theoretical power generation of the solar power station, and the theoretical power generation of the solar power station is related to the location and time of the solar power station; the clear sky index of each solar power station in the area Comparing with the average clear sky index of the area; and judging whether each solar power station in the area is abnormal according to the comparison result. The solar power plant monitoring method as described in claim 1, further comprising: transmitting the abnormal information to the maintenance server of the equipment maintenance company or the notification server of the audit unit. The solar power station monitoring method according to claim 1, wherein the regional average clear sky index is the average value or weighted average value of multiple clear sky indexes of multiple solar power stations in the area, wherein one or more standard deviations are too large The clear sky index of each solar power station is excluded from the calculation of the regional average clear sky index. The solar power station monitoring method according to claim 2, wherein when the clear sky index of the solar power stations in the area is greater than the average clear sky index of the area, and the difference is large At the first abnormal threshold value, the abnormal information is sent to the notification server to enable the notification server to check for electricity theft; when the clear sky index of the solar power stations in the area is less than the average clear sky index of the area, And the difference value is greater than the second abnormal threshold value, the abnormal information is sent to the maintenance server, so that the maintenance server informs the maintenance service. The solar power station monitoring method as described in claim 1, further comprising: judging the condition of each solar power station in the area according to the clear sky index of each solar power station in the area and multiple historical clear sky indexes; and according to the judgment result, Determine whether each solar power station in the area is abnormal. The solar power plant monitoring method according to claim 4, wherein the first abnormality threshold is equal to the second abnormality threshold. The solar power station monitoring method according to claim 3, wherein the regional average clear sky index is the weighted average value of the multiple clear sky indexes of the multiple solar power stations in the region, and the average clear sky index is based on the multiple solar power stations in the region. The multiple areas of determines multiple weights, and calculates the average value of the weights according to the multiple weights and the multiple clear sky indexes. The solar power plant monitoring method according to claim 2, wherein the maintenance end server is a server of a solar energy equipment repairer, and the notification end server is a server of a power or energy audit unit.

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