An intelligent centralized monitoring and management method and system for a photovoltaic power station

Abstract

The present invention provides an intelligent centralized monitoring and management method and system for a photovoltaic power station, which can simultaneously perform real-time data detection, status monitoring, and parameter adjustment on multiple individual photovoltaic power generation groups in the photovoltaic power station. The supervision effect is good, the collected data is highly reliable, the data error is small, and the detection accuracy is high, which helps to improve the management efficiency of the production equipment of the photovoltaic power station as a whole. It includes the following steps: detecting and collecting the data information of the photovoltaic power station, where the data information includes the basic status information and real-time working information of the photovoltaic power station; processing and storing the collected data information, and the processing includes sequentially classifying the collected data information, preprocessing the data, and calculating the power; establishing an associated data model based on the processed and stored data information; monitoring the working operation status of the photovoltaic power station through the associated data model and performing control and adjustment on the photovoltaic power station according to the output result of the associated data model.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and particularly to an intelligent centralized monitoring and management method and system for a photovoltaic power station. Background Art

[0002] A photovoltaic power station is a power generation system that directly converts solar radiant energy into electrical energy by utilizing the photovoltaic effect of solar cells. By connecting step-up substation equipment to the power grid, the photovoltaic power station can transmit electrical energy to the power grid. According to whether the output can be adjusted, it can be divided into a storage photovoltaic power station and a non-storage photovoltaic power station. According to whether the generated electrical energy is grid-connected, it can be divided into a grid-connected photovoltaic power station and an off-grid self-use photovoltaic power station.

[0003] Currently, photovoltaic power stations have been widely commercially promoted at home and abroad, especially in the following three major application scenarios: one is as a power source for equipment in areas without electricity, such as power supply for communication base stations in areas without electricity such as deserts, gobi, and the sea; the second is as self-use electricity for commercial and civil use in the city, such as distributed rooftop photovoltaic power stations for factory production, thin-film power generation systems on the outer facade of buildings, etc.; the third is as a clean power source for grid-connected power generation, such as large-scale ground, mountain, and water surface grid-connected photovoltaic power stations.

[0004] Currently, grid-connected photovoltaic power stations put into operation in China are usually composed of multiple independent photovoltaic power generation groups in terms of structure. Its typical feature is that the geographical installation positions of the photovoltaic power generation groups are scattered, which leads to the need for staff to conduct separate inspection tours for each power generation group at each site when supervising the operation of the photovoltaic power generation groups. In this way, the supervision effect of the photovoltaic power generation groups is poor, the on-site operation is complex, and it is not conducive to the efficient management of the photovoltaic power station. Summary of the Invention

[0005] In order to solve the problems existing in the prior art, the present invention provides an intelligent centralized monitoring and management method and system for a photovoltaic power station, which can simultaneously perform real-time data detection, status monitoring, and parameter adjustment on multiple individual photovoltaic power generation groups in a photovoltaic power station. The supervision effect is good, the collected data is highly reliable, the data error is small, the detection accuracy is high, and it helps to improve the management efficiency of the production equipment of the photovoltaic power station as a whole.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An intelligent centralized monitoring and management method for a photovoltaic power station includes the following steps:

[0008] Detect and collect the data information of the photovoltaic power station, where the data information includes the basic status information and real-time working information of the photovoltaic power station;

[0009] Process and store the collected data information, and the process includes successively classifying the collected data information, preprocessing the data, and calculating the power;

[0010] Establish an associated data model based on the data information stored after processing;

[0011] Monitor the working operation status of the photovoltaic power station through the associated data model and perform control adjustment on the photovoltaic power station according to the output result of the associated data model.

[0012] Preferably, the data classification includes,

[0013] Mark the currently operating power generation units and the non-operating power generation units in the photovoltaic power station according to the data information collected from the photovoltaic power station, and perform data preprocessing on the marked operating power generation units.

[0014] Preferably, the data preprocessing includes,

[0015] Correct the data information of the marked operating power generation units, interpolate the missing data information, obtain the corrected and interpolated valid data information and store it.

[0016] Preferably, before processing the collected data information, it further includes,

[0017] Compare the data information collected from the photovoltaic power station with the historical operation data of the photovoltaic power station, delete the data information that does not meet the set requirements, and retain the data information that meets the set requirements.

[0018] Preferably, the power calculation includes,

[0019] Transmit the data information of the marked operating power generation units to the power calculation system of the power station for power calculation. Among them, the data information transmitted to the power calculation system of the power station includes the output voltage and current of the power generation unit.

[0020] Preferably, the establishment of the associated data model according to the data information stored after processing includes,

[0021] Establish an associated data model according to the data information stored after processing, the collected environmental values and the historical operation data, and update the data in the associated data model according to the real-time working information of the photovoltaic power station collected in real time.

[0022] Preferably, the collected environmental values include irradiance, ambient temperature, relative humidity and wind speed.

[0023] Preferably, the control adjustment of the photovoltaic power station includes,

[0024] Adjust the working status of the photovoltaic power station in the station terminal system of the photovoltaic power station;

[0025] Or adjust the inside of the photovoltaic power station through the remote service system.

[0026] An intelligent centralized monitoring and management system for a photovoltaic power station, comprising a power station terminal system, a power station power calculation system and a remote service system;

[0027] The output end of the power station terminal system is respectively connected to the input end of the power station power calculation system and the input end of the remote service system, and the output end of the power station power calculation system is connected to the input end of the remote service system;

[0028] The power station terminal system is used to detect and collect the data information of the photovoltaic power station, and the data information includes the basic state information and real-time working information of the photovoltaic power station;

[0029] The power station power calculation system is used to process and store the collected data information, and the processing includes sequentially classifying the collected data information, preprocessing the data and calculating the power;

[0030] The remote service system is used to establish an associated data model according to the processed and stored data information, monitor the working operation state of the photovoltaic power station through the associated data model, and perform control and adjustment on the photovoltaic power station according to the output result of the associated data model.

[0031] Preferably, the power station power calculation system includes a data correction module, and the data correction module is used to correct the data information of the photovoltaic power station collected, and interpolate the missing data information, so as to obtain the corrected and interpolated valid data information and store it.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The present invention provides an intelligent centralized monitoring and management method for a photovoltaic power station. The basic information and working information of the photovoltaic power station are detected by the power station terminal system, and the power station terminal system sends the information to the power station power calculation system. The power station power system processes and analyzes the data, so that the power station power calculation system only calculates the working output power of the power station detected in the power station terminal system. The power station power calculation system sends the calculated result data to the remote service system. At the same time, the power station terminal system sends the basic data of the power station to the remote service system, and the remote service system outputs the information of the power station. By observing the associated data model generated by the remote service system, the working operation state of the photovoltaic power station can be monitored at any time, which is convenient for the staff to grasp the working condition of the power station in real time. At the same time, the working state of the power station can also be adjusted through the remote service system, achieving the effect of convenient monitoring and management of the power station. The intelligent centralized monitoring and management method for the photovoltaic power station described in the present invention can simultaneously perform real-time data detection, status monitoring and parameter adjustment on multiple individual photovoltaic power generation groups in the photovoltaic power station, with good supervision effect, strong reliability of the collected data, small data error and high detection accuracy, which helps to improve the management efficiency of the production equipment of the photovoltaic power station as a whole.

[0034] Furthermore, in the present invention, by separating the power calculation part of the photovoltaic power station from the remote service system and separately setting up a power calculation system, the burden on the remote service system is reduced, which facilitates the calculation of other parts by the remote service system, enables faster data update speed, better effect of model generation and maintenance, and achieves the effect of reducing data errors.

[0035] Furthermore, in the present invention, during the real-time data acquisition process, phenomena such as sensor drift, electromagnetic interference, and communication failures that may cause abnormalities, loss, errors, or deviations in the acquired data are corrected, and missing data is interpolated, thereby ensuring the reliability of the acquired data and the accuracy of power generation prediction. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a flowchart of the intelligent centralized monitoring and management method for the photovoltaic power station of the present invention;

[0037] Figure 2 is a flowchart of the steps of the monitoring and management method in the embodiment of the present invention;

[0038] Figure 3 is a schematic structural diagram of the intelligent centralized monitoring and management system for the photovoltaic power station of the present invention;

[0039] Figure 4 is a schematic internal module structure diagram of the power station terminal system of the present invention;

[0040] Figure 5 is a schematic internal module structure diagram of the power station power calculation system of the present invention;

[0041] Figure 6 is a schematic internal module structure diagram of the remote service system of the present invention;

[0042] Figure 7 is a schematic internal module structure diagram of the server database of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] The following further elaborates on the present invention in detail in conjunction with specific embodiments, which is an explanation rather than a limitation of the present invention.

[0044] As Figure 1 shown, an intelligent centralized monitoring and management method for a photovoltaic power station of the present invention includes the following steps:

[0045] Detect and collect data information of the photovoltaic power station, where the data information includes basic data information and real-time working information of the photovoltaic power station;

[0046] Process and store the collected data information, where the processing includes successively classifying the collected data information, preprocessing the data, and calculating the power;

[0047] Establish an associated data model based on the processed and stored data information;

[0048] Monitor the working operation status of the photovoltaic power station through the associated data model and perform control and adjustment on the photovoltaic power station according to the output result of the associated data model.

[0049] As Figure 2 shown, the specific implementation process of the present invention includes,

[0050] The first step: Detect and collect the data information of the photovoltaic power station, including detecting the real-time operation data of the power generation unit, inverter, and step-up transformer in the photovoltaic power station through the current detection module in the power station terminal system, as well as other status information of the photovoltaic power station;

[0051] The second step: Power control of the power station. The remote service system receives the data detected by the power station terminal system and displays it, and the staff controls the working conditions of the photovoltaic power station accordingly through the displayed data;

[0052] The third step: Power calculation of the power station. Send the detected data through the power station terminal system to the signal receiving module in the power station power calculation system, store the data sent by the power station terminal system through the data storage module in the power station power calculation system, and process the data sent by the power station terminal system, so that the power calculation module in the power station power calculation system only calculates the output voltage and current of the photovoltaic power station;

[0053] The fourth step: Data detection of the power station. Classify the data through the data inspection and processing module in the server database of the remote service system, judge its integrity and rationality, delete the invalid data and preprocess the valid data. The preprocessing is to correct the collected abnormal data and interpolate the missing data information, obtain the corrected and interpolated valid data information and store it to obtain the operation data information that meets the requirements;

[0054] Among them, the data collected by the power station terminal system includes the operation record data of the power station monitoring system. Since there may be phenomena such as sensor drift, electromagnetic interference, and communication failures during the real-time data collection process, resulting in abnormalities, losses, errors, or deviations in the collected data, these incorrect and untrue data are bad data. The present invention preprocesses the collected data, ensuring the reliability of the collected data and the effect of the power generation prediction accuracy.

[0055] Step 5: Power station data storage. Store the real-time operation data of each power generation unit of the photovoltaic power station and the professional numerical weather forecast obtained in the above steps in the data receiving and storage module of the server database.

[0056] Step 6: Model generation and expression. Based on the data stored in Step 5, establish an associated data model among irradiance, ambient temperature, relative humidity, wind speed, and power generation power, and update the records in the associated data model according to the latest collected real-time operation data.

[0057] The present invention provides an intelligent centralized monitoring and management method for a photovoltaic power station. The basic information and working information of the photovoltaic power station are detected through the power station terminal system. The power station terminal system sends the information to the power station power calculation system. The power station power system processes and analyzes the data, enabling the power station power calculation system to only calculate the working output power of the power station detected by the power station terminal system. The power station power calculation system sends the calculated result data to the remote service system. At the same time, the power station terminal system sends the basic data of the power station to the remote service system. The remote service system outputs the information of the power station. By observing the associated data model generated by the remote service system, the working operation status of the photovoltaic power station can be monitored at any time, facilitating the staff to grasp the working conditions of the power station in real time. At the same time, the working status of the power station can also be adjusted through the remote service system, achieving the effect of facilitating the monitoring and management of the power station.

[0058] Furthermore, in the present invention, by setting a power station control module in the remote service system, the photovoltaic power station can be controlled in two ways. The staff can directly adjust the working status of the photovoltaic power station in the power station terminal system, or adjust the inside of the photovoltaic power station in the remote service system. The staff can see the real-time working conditions of the photovoltaic power station in the remote service system, facilitating the staff to adjust the inside of the photovoltaic power station at any time according to the working status of the photovoltaic power station.

[0059] Furthermore, in the present invention, by separating the power calculation part of the photovoltaic power station from the remote service system and setting up a separate power calculation system, the burden on the remote service system is reduced, facilitating the calculation of other parts by the remote service system, making the data update speed faster, and achieving better effects in model generation and maintenance, thus achieving the effect of reducing data errors.

[0060] As Figure 3 shown, the present invention provides an intelligent centralized monitoring and management system for a photovoltaic power station, including a photovoltaic power station monitoring and management system. The photovoltaic power station monitoring and management system includes a power station terminal system, a power station power calculation system, and a remote service system.

[0061] In the present invention, the output end of the power station terminal system is electrically connected to the input end of the power station power calculation system, the output end of the power station power calculation system is electrically connected to the input end of the remote service system, and the remote service system and the power station terminal system are used in cooperation with each other.

[0062] As Figure 4 shown, wherein, the power station terminal system includes a current detection module, a data processing module and a signal sending module.

[0063] In the present invention, the output end of the current detection module is electrically connected to the input end of the data processing module, the output end of the data processing module is electrically connected to the input end of the signal sending module, and the signal sending module and the current detection module are used in cooperation with each other.

[0064] As Figure 5 shown, wherein, the power station power calculation system includes a signal receiving module, a power calculation module, a data storage module and a data correction module.

[0065] In the present invention, the input end of the signal receiving module is electrically connected to the output end of the signal sending module in the power station terminal system, and is used to receive the data information of the photovoltaic power station collected by the power station terminal system. The output end of the signal receiving module is electrically connected to the input end of the data storage module, and is used to store the collected data information of the photovoltaic power station and is interconnected with the server database in the remote service system to realize data information sharing; the output end of the data storage module is electrically connected to the input end of the power calculation module, and is used to perform power calculation according to the collected data information. The output end of the power calculation module is connected to the remote service system and is used to output the data processing result for the remote service system to model. Among them, there is also a data correction module, which is electrically connected to the data storage module and is used to correct the data information of the photovoltaic power station collected and stored in the data storage module, and interpolate the missing data information to obtain the corrected and interpolated valid data information and store it.

[0066] As Figure 6 shown, wherein, the remote service system includes a wireless receiving module, a power station control module and a server database.

[0067] In the present invention, the output end of the wireless receiving module is electrically connected to the input end of the power station control module, the output end of the power station control module is electrically connected to the server database, and the output end of the wireless receiving module is electrically connected to the input end of the server database.

[0068] Furthermore, as Figure 7As shown, the server database includes a data receiving and storing module, a data checking and processing module, and a data generating and maintaining module.

[0069] In the present invention, the input end of the data checking and processing module is electrically connected to the output end of the data receiving and storing module, and the output end of the data receiving and storing module is electrically connected to the input end of the data generating and maintaining module.

[0070] The data receiving and storing module is responsible for receiving data from the power station terminal system and storing it in the database. The data checking and preprocessing module is responsible for comparing the data output by the power station power calculation system with the data in the database, judging its integrity and rationality, deleting invalid data and preprocessing valid data to obtain historical operation data that meets the system format requirements. The associated data model generation and maintenance module establishes an associated data model with the data in the database based on the data in the database, and updates the records in the associated data model according to the latest collected real-time operation data for the prediction model to call. By observing the generated model, the staff can know the working state of the power station, achieving the effect of facilitating the supervision of the staff.

[0071] To achieve the above object, the main technical means adopted in the present invention should be clearly, completely and accurately described, and the essential content of the invention should be explained. The degree of disclosure should be such that those of ordinary skill in the art can understand and implement it.

[0072] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent centralized monitoring and management method for a photovoltaic power station, characterized in that, it includes the following steps, detect and collect the data information of the photovoltaic power station, and the data information includes the basic status information and real-time working information of the photovoltaic power station; process and store the collected data information, and the processing includes successively classifying the collected data information, preprocessing the data, and calculating the power; the data classification includes marking the currently operating power generation units and the non-operating power generation units in the photovoltaic power station according to the data information collected from the photovoltaic power station, and preprocessing the data information of the marked operating power generation units; the data preprocessing includes comparing the data information collected from the photovoltaic power station with the historical operation data of the photovoltaic power station, deleting the data information that does not meet the set requirements, retaining the data information that meets the set requirements, correcting the data information of the marked operating power generation units, and interpolating the missing data information to obtain the corrected and interpolated valid data information and store it; the power calculation includes sending the data information of the marked operating power generation units to the power calculation system of the power station for power calculation, wherein the data information sent to the power calculation system of the power station includes the output voltage and current of the power generation unit; establishing an associated data model according to the processed and stored data information includes establishing an associated data model according to the processed and stored data information, the collected environmental values and the historical operation data, and updating the data in the associated data model according to the real-time working information of the photovoltaic power station collected in real time; monitor the working state of the photovoltaic power station through the associated data model and control and adjust the photovoltaic power station according to the output result of the associated data model.

2. An intelligent centralized monitoring and management method for a photovoltaic power station according to claim 1, characterized in that, the collected environmental values include irradiance, ambient temperature, relative humidity and wind speed.

3. An intelligent centralized monitoring and management method for a photovoltaic power station according to claim 1, characterized in that, the control and adjustment of the photovoltaic power station includes, adjust the working state of the photovoltaic power station in the power station terminal system of the photovoltaic power station; or adjust the inside of the photovoltaic power station through the remote service system.

4. An intelligent centralized monitoring and management system for a photovoltaic power station, characterized in that, it includes a power station terminal system, a power station power calculation system and a remote service system; the output end of the power station terminal system is respectively connected to the input end of the power station power calculation system and the input end of the remote service system, and the output end of the power station power calculation system is connected to the input end of the remote service system; the power station terminal system is used to detect and collect the data information of the photovoltaic power station, and the data information includes the basic status information and real-time working information of the photovoltaic power station; the power station power calculation system is used to process and store the collected data information, and the processing includes successively classifying the collected data information, preprocessing the data, and calculating the power; the power station power calculation system includes a data correction module, and the data correction module is used to correct the data information collected from the photovoltaic power station and interpolate the missing data information to obtain the corrected and interpolated valid data information and store it; The remote service system is used to establish an associated data model based on the processed and stored data information, monitor the working operation status of the photovoltaic power station through the associated data model, and perform control and adjustment on the photovoltaic power station according to the output result of the associated data model.

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