Intelligent distributed power supply access device and data processing method thereof

Abstract

The invention provides an intelligent distributed power supply access device and a data processing method thereof, and belongs to the technical field of distributed power supplies. Comprising the following steps: S1, when the intelligent distributed power supply access device accesses photovoltaic equipment, acquiring an equipment model of the photovoltaic equipment; s2, searching whether the equipment model is in a first data set, wherein the first data set is a data set which is pre-stored by the intelligent distributed power supply access device and comprises the equipment model of the photovoltaic equipment and a corresponding communication protocol; s3, if the equipment model is not in the first data set, acquiring a second data set from the terminal system through the Beidou positioning module and the first communication module, and searching whether the equipment model is in the second data set; and S4, if the equipment model is in the second data set, the intelligent distributed power supply access device obtains a communication protocol corresponding to the equipment model from the terminal system, and establishes communication with the photovoltaic equipment based on the communication protocol. Therefore, the communication protocol of the photovoltaic equipment is accurately obtained by retrieving the remote terminal system database, and communication is quickly realized.

Description

Technical Field

[0001] The present invention relates to the technical field of distributed power supply, and in particular to an intelligent distributed power supply access device and a data processing method thereof. Background Art

[0002] At present, the traditional distributed power access device is mainly designed by designers who pre-count the photovoltaic inverters, AC and DC charging piles, air conditioners and energy storage equipment in the market, search for relevant product information and communication protocols, and design a series of supporting products that may be encountered in the early stage of product formation. Although this design method can solve most of the popular photovoltaic inverters, charging piles, air conditioners and energy storage equipment to a certain extent, the distributed power market environment is changeable and the types of equipment are diverse. Often this single design method will have defects. Technical installers are required during installation. If different equipment models are encountered on site, the support of designers is required, remote debugging communication, and sometimes technical personnel are required to go to the site for debugging. Therefore, the use of this design method is not only inefficient and has poor portability, but also difficult to install on site and later operation and maintenance, and is more likely to be replaced by the market. Summary of the invention

[0003] In view of this, the present invention provides an intelligent distributed power access device and a data processing method thereof to solve the technical problems of low access efficiency, poor portability and difficult subsequent operation and maintenance of existing distributed power access devices.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A data processing method for an intelligent distributed power supply access device comprises the following steps:

[0006] S1. When the intelligent distributed power access device is connected to a photovoltaic device, the device model of the photovoltaic device is obtained;

[0007] S2. Search whether the device model is in a first data set, where the first data set is a data set containing device models of photovoltaic devices and their corresponding communication protocols pre-stored in the intelligent distributed power access device;

[0008] S3. If the device model is not in the first data set, obtain a second data set from the remote terminal system through the Beidou positioning module and the first communication module, and search whether the device model is in the second data set;

[0009] S4. If the device model is in the second data set, the intelligent distributed power access device obtains the communication protocol corresponding to the device model from the remote terminal system, and establishes communication with the photovoltaic device based on the communication protocol.

[0010] Preferably, in step S3, if the device model is not in the first data set, a second data set is obtained from the remote terminal system through the Beidou positioning module and the first communication module, and a search is performed to determine whether the device model is in the second data set, specifically including the following steps:

[0011] The intelligent distributed power access device obtains Beidou positioning data containing its position information through a Beidou positioning module;

[0012] The Beidou positioning data is sent to the remote terminal system through the first communication module, and the remote terminal system parses the area where the intelligent distributed power access device is located according to the Beidou positioning data;

[0013] The remote terminal system searches for a second data set according to the area where the intelligent distributed power access device is located. The second data set is a device model data set of photovoltaic devices existing in the area where the intelligent distributed power access device is located.

[0014] Preferably, after step S4, the method further comprises:

[0015] S41. Store the device model of the photovoltaic device and its corresponding communication protocol in the first data set.

[0016] Preferably, the method further comprises:

[0017] S42, comparing the photovoltaic equipment model of the first data set with the photovoltaic equipment model of the second data set;

[0018] S43. When the second data set contains a photovoltaic device model that is not present in the first data set, the intelligent distributed power access device obtains a communication protocol corresponding to the photovoltaic device model that is not present in the first data set from the remote terminal system;

[0019] S44: storing photovoltaic equipment models and their corresponding communication protocols that are not in the first data set in the first data set.

[0020] Preferably, a Bloom filter is used to search whether the device model is in the first data set or the second data set.

[0021] Preferably, the method further comprises:

[0022] When the intelligent distributed power access device successfully communicates with the photovoltaic equipment, the intelligent distributed power access device collects current voltage data and temperature and humidity data through the voltage acquisition module and the temperature and humidity sensor module;

[0023] If the voltage data and the temperature and humidity data are abnormal, the abnormal information is reported to the remote terminal system through the first communication module.

[0024] Preferably, the method further comprises:

[0025] The intelligent distributed power access device obtains location information in real time through the Beidou positioning module;

[0026] When the location information changes abnormally, the abnormal change is uploaded to the remote terminal system through the first communication module;

[0027] The remote terminal system prompts the technician to check the on-site status of the intelligent distributed power supply access device.

[0028] The present invention also provides an intelligent distributed power access device, which adopts the data processing method of the intelligent distributed power access device as described above, including a first communication module, a Beidou positioning module, an ARM chip, and a second communication module; the first communication module is used for data communication between the intelligent distributed power access device and the remote terminal system, the Beidou positioning module is used to obtain the location information of the intelligent distributed power access device, and the ARM chip is used for the data obtained by the intelligent distributed power access device; the second communication module is used for data communication between the intelligent distributed power access device and the photovoltaic equipment.

[0029] Preferably, the intelligent distributed power supply access device also includes a temperature and humidity sensing module and a voltage sampling module.

[0030] Preferably, the first communication module includes a 4G communication module, and the second communication module includes an HPLC module, a Bluetooth module, and a 485 communication module.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The intelligent distributed power access device of the present invention can actively and accurately obtain the communication protocol of the photovoltaic equipment that is not stored in it through the remote terminal system. When encountering different equipment models, there is no need for technical personnel to communicate and debug remotely, thereby improving the working efficiency of the intelligent distributed power access device, allowing the intelligent distributed power access device to quickly communicate and collect data with the photovoltaic equipment, and then can help design companies quickly seize the market in the early stage, greatly improve the efficiency of later maintenance and reduce maintenance costs, make the product have a certain degree of intelligence, reduce the risk of equipment being replaced by the market in a short time, and enhance management relative to traditional distributed power access devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The present invention is a method flow chart of the data processing method of the intelligent distributed power supply access device.

[0034] Figure 2 It is a working schematic diagram of the intelligent distributed power supply access device in the present invention.

[0035] Figure 3This is a schematic diagram of the supporting work of the intelligent distributed power supply access device and system in the present invention. DETAILED DESCRIPTION

[0036] The technical solutions and technical effects of the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings of the present invention.

[0037] Please see Figure 1 , a data processing method for an intelligent distributed power access device, comprising the following steps:

[0038] S1. When the intelligent distributed power access device is connected to a photovoltaic device, the device model of the photovoltaic device is obtained;

[0039] S2. Search whether the device model is in the first data set, where the first data set is a data set containing the device model of the photovoltaic device and its corresponding communication protocol pre-stored in the intelligent distributed power access device;

[0040] S3. If the device model is not in the first data set, obtain a second data set from the remote terminal system through the Beidou positioning module and the first communication module, and search whether the device model is in the second data set;

[0041] S4. If the device model is in the second data set, the intelligent distributed power access device obtains the communication protocol corresponding to the device model from the remote terminal system, and establishes communication with the photovoltaic device based on the communication protocol.

[0042] At the initial stage of powering on the intelligent distributed power access device, the photovoltaic device is connected through the adapter cable. At the same time, the intelligent distributed power access device needs to find the communication protocol of the photovoltaic device to communicate with the photovoltaic device. When designing the intelligent distributed power access device, the technicians will pre-count the photovoltaic devices existing in the market, search for relevant product information and communication protocols, and store them in the first data set in advance. The intelligent distributed power access device can find the communication protocol of the photovoltaic device to be connected by searching whether there is the device model of the photovoltaic device in the first data set. If the device model is not in the first data set, the intelligent distributed power access device obtains the second data set through the remote terminal system for search. If the device model is in the second data set, the intelligent distributed power access device obtains the communication protocol corresponding to the device model from the remote terminal system, and establishes communication with the photovoltaic device based on the communication protocol. The intelligent distributed power access device of the present invention can actively and accurately obtain the communication protocol of the photovoltaic equipment that is not stored in it through the remote terminal system. When encountering different equipment models, there is no need for technical personnel to communicate and debug remotely, thereby improving the working efficiency of the intelligent distributed power access device, allowing the intelligent distributed power access device to quickly communicate and collect data with the photovoltaic equipment, and then can help design companies quickly seize the market in the early stage, greatly improve the efficiency of later maintenance and reduce maintenance costs, make the product have a certain degree of intelligence, reduce the risk of equipment being replaced by the market in a short time, and enhance management relative to traditional distributed power access devices.

[0043] Further, in step S3, if the device model is not in the first data set, a second data set is obtained from the remote terminal system through the Beidou positioning module and the first communication module, and a search is performed to determine whether the device model is in the second data set, specifically including the following steps:

[0044] The intelligent distributed power access device obtains Beidou positioning data containing its location information through the Beidou positioning module;

[0045] The Beidou positioning data is sent to the remote terminal system through the first communication module, and the remote terminal system parses the area where the intelligent distributed power access device is located according to the Beidou positioning data;

[0046] The remote terminal system searches for a second data set according to the area where the intelligent distributed power access device is located. The second data set is a device model data set of photovoltaic devices existing in the area where the intelligent distributed power access device is located.

[0047] Specifically, at the initial stage of power-on of the intelligent distributed power access device, the photovoltaic device is connected through the adapter cable, and the Beidou positioning module starts to work. The GNGGA data type based on the NMEA-0183 protocol sent by the Beidou positioning module can be parsed to obtain the current specific location information of the intelligent distributed power access device, and the current specific location information of the intelligent distributed power access device is used as Beidou positioning data. The intelligent distributed power access device sends Beidou positioning data to the remote terminal system through the 4G communication module, and the remote terminal system parses the area where the intelligent distributed power access device is located according to the location information in the Beidou positioning data. Among them, the database of the remote terminal system stores photovoltaic equipment model data sets of multiple regions, and the remote terminal system can retrieve the equipment model data set of photovoltaic equipment in the area where the intelligent distributed power access device is located in the database according to the regional information parsed by the Beidou positioning data, that is, the second data set. Among them, the second data set can be when the photovoltaic equipment is installed, the equipment model, equipment protocol and equipment location of the photovoltaic equipment are uploaded to the remote terminal device for storage. Therefore, by determining an accurate second data set based on the location information of the intelligent distributed power access device, the search volume of the intelligent distributed power access device can be reduced, the efficiency of the intelligent distributed power access device in finding the communication protocol of the photovoltaic device can be improved, and communication with the photovoltaic device can be quickly achieved.

[0048] Further, after step S4, the method further includes:

[0049] S41. Store the device model of the photovoltaic device and its corresponding communication protocol in the first data set to update the first data set, so that when the photovoltaic device is accessed next time, the communication protocol of the photovoltaic device can be obtained by retrieving the first data set, so that the intelligent distributed power supply access device can quickly communicate with the photovoltaic device.

[0050] Furthermore, the method further comprises:

[0051] S42, comparing the photovoltaic equipment model of the first data set with the photovoltaic equipment model of the second data set;

[0052] S43. When the second data set contains a photovoltaic device model that is not present in the first data set, the intelligent distributed power access device obtains a communication protocol corresponding to the photovoltaic device model that is not present in the first data set from the remote terminal system;

[0053] S44: Store the photovoltaic equipment models and their corresponding communication protocols that are not in the first data set in the first data set.

[0054] When the device model of a photovoltaic device is not in the first data set, but in the second data set, it indicates that the device model stored in the first data set does not cover all photovoltaic devices in the area where it is located. In order to improve the access efficiency of the intelligent distributed power access device and the photovoltaic device, the intelligent distributed power access device can actively learn the communication protocol of the photovoltaic device it lacks. Specifically, the intelligent distributed power access device first compares the photovoltaic device model of the first data set with the photovoltaic device model of the second data set, wherein a Bloom filter can be used to search whether each photovoltaic device model in the second data set is in the first data set. If a photovoltaic device model A is not in the first data set, the remote terminal system is asked for the relevant photovoltaic device protocol that the photovoltaic device model A lacks. Photovoltaic device model A and its corresponding communication protocol are stored in the first data set to update the first data set. Thus, by comparing the differences between the two data sets, it is confirmed whether there is photovoltaic device information that does not exist in the intelligent distributed power access device. When inconsistency occurs, the intelligent distributed power access device determines to ask the terminal for the missing relevant photovoltaic device protocol, and adds the newly obtained data subset to data set B. The intelligent distributed power access device quickly adapts according to data set B to achieve communication with the photovoltaic device.

[0055] Furthermore, a Bloom filter is used to search whether the device model is in the first data set or the second data set.

[0056] Specifically, a Bloom Filter is constructed to effectively and quickly search for photovoltaic equipment models and communication protocols existing in the intelligent distributed power access device. The intelligent distributed power access device confirms the expected number of elements n of the Bloom Filter based on the data set.

[0057] According to the training effect, the acceptable misjudgment rate P is determined as:

[0058]

[0059] Where e is the base of the natural logarithm (approximately equal to 2.71828), k is the number of hash functions, n is the number of elements, and m is the size of the bit array. The required bit array size can be calculated based on the given false positive rate P and the expected number of elements to be inserted n, and the size of the bit array m, as follows:

[0060]

[0061] Finally, the optimal number of hash functions is determined. This calculation method is when the misjudgment rate of Bloom Filter is the lowest. The calculation formula is as follows:

[0062]

[0063] Furthermore, the method further comprises:

[0064] When the intelligent distributed power access device successfully communicates with the photovoltaic equipment, the intelligent distributed power access device collects current voltage data and temperature and humidity data through the voltage acquisition module and the temperature and humidity sensor module;

[0065] If the voltage data and the temperature and humidity data are abnormal, the abnormal information is reported to the remote terminal system through the first communication module.

[0066] Specifically, the voltage acquisition module and the temperature and humidity sensing module of the intelligent distributed power access device can collect the temperature and humidity data of the intelligent distributed power access device and the voltage data of the connected photovoltaic equipment in real time. When the voltage data or the temperature and humidity data is abnormal, one is that the difference between the currently collected temperature and humidity data or voltage data and the temperature and humidity data or voltage data collected in the previous times exceeds the safety threshold, and the other is that when the currently collected temperature and humidity data or voltage data exceeds the safety value, it indicates that the current intelligent distributed power access device or the connected photovoltaic equipment has an abnormality. Therefore, it is necessary to report the abnormal information to the remote terminal system through the first communication module, so as to prompt the technicians to handle the abnormal information through the remote terminal system, thereby ensuring the normal operation of the intelligent distributed power access device and improving the abnormality handling efficiency of the intelligent distributed power access device.

[0067] In some embodiments, the following method can be used to determine whether the voltage data and the temperature and humidity data are abnormal: Based on the distance method (K-Nearest Neighbors, KNN), a suitable k value is selected for each data. Here, k is a parameter indicating the number of nearest neighbors to be referenced when calculating the average distance of each point. For each point x in the data set i , calculate its difference with all other points x j Here we use the Euclidean distance calculation method, and the calculation formula is as follows:

[0068]

[0069] Among them, x i,k and x j,k They are point x i and x j The value of the kth feature.

[0070] For each point x i Find the k points closest to it, the calculation formula is as follows:

[0071]

[0072] Where NN(x i ) is the point xi The set of k nearest neighbor points.

[0073] A distance threshold τ is determined, which is used to judge whether a point is an abnormal point. If the average distance of a point exceeds the threshold, it is identified as an abnormal point, and the intelligent distributed power access device reports to the terminal through the 4G communication module.

[0074] Furthermore, the method further comprises:

[0075] The intelligent distributed power access device obtains location information in real time through the Beidou positioning module;

[0076] When the location information changes abnormally, the abnormal change is uploaded to the remote terminal system through the first communication module;

[0077] The remote terminal system prompts the technician to check the on-site status of the intelligent distributed power supply access device.

[0078] The intelligent distributed power access device of the present invention also has an anti-theft function. Specifically, the intelligent distributed power access device obtains location information in real time through the Beidou positioning module. When the location information changes abnormally, the abnormal change is uploaded to the remote terminal system through the first communication module. Among them, the abnormal change in location information may be that the real-time acquired location information is different from the last acquired location information, or the real-time acquired location information is far away from the last acquired location information, indicating that the intelligent distributed power access device may be in an abnormal moving state. For abnormal location information changes, data can be uploaded through the 4G module. The remote terminal can prompt the technician to contact the relevant regional personnel for inspection on the status of the current equipment number, and the equipment on-site status can be checked in a short time. At the same time, when the intelligent distributed power access device obtains location information in real time through the Beidou positioning module, the location information can also be displayed in real time on the remote terminal system, so that the technician can locate the location of the intelligent distributed power access device in time.

[0079] In some embodiments, the intelligent distributed power access device can not only achieve flexible control of photovoltaics through its own computing power, but also achieve flexible control through fixed-point and directional control of the remote terminal system.

[0080] Please see Figure 2In order to achieve the purpose of the present invention, the present invention also provides an intelligent distributed power access device, which adopts the data processing method of the intelligent distributed power access device as described above, including a first communication module, a Beidou positioning module, an ARM chip, and a second communication module; the first communication module is used for data communication between the intelligent distributed power access device and the remote terminal system, the Beidou positioning module is used to obtain the location information of the intelligent distributed power access device, and the ARM chip is used for the data obtained by the intelligent distributed power access device; the second communication module is used for data communication between the intelligent distributed power access device and the photovoltaic device.

[0081] Furthermore, the intelligent distributed power supply access device also includes a temperature and humidity sensor module and a voltage sampling module.

[0082] Furthermore, the first communication module includes a 4G communication module, and the second communication module includes an HPLC module, a Bluetooth module, and a 485 communication module.

[0083] Among them, the voltage sampling module realizes real-time monitoring of the power supply system of the intelligent distributed power access device, which is used to detect its own working status and realize real-time reporting, and provide data on the on-site operating environment. The HPLC module, Bluetooth module, and 485 communication module are communication modules of the intelligent distributed power access device. They can realize multiple communication methods according to the distance of the photovoltaic equipment and actively copy the interactive equipment data information, and finally upload it to the remote terminal system through the 4G communication module. The Beidou positioning module realizes real-time positioning of the product, ensures that the product works in the appropriate area and provides geographic location information. The ARM chip is the core component of the intelligent distributed power access device, which is used for program execution. The compiled program is locally burned or remotely upgraded to the ARM chip. The ARM chip controls the operation of each module function, has a certain computing power, and can process data under abnormal conditions and active learning and reporting capabilities.

[0084] Please see Figure 3 , the intelligent distributed power access device can access multiple photovoltaic devices, communicate with multiple photovoltaic devices and collect data separately. Among them, photovoltaic inverters, charging piles, air conditioners and energy storage equipment are collectively referred to as photovoltaic equipment. The remote terminal system can communicate with multiple intelligent distributed power access devices. Among them, the remote terminal system can realize the main station of 4G communication to ensure the uniformity of one-to-many intelligent distributed power access device management. At the same time, it stores a large number of databases about photovoltaic equipment, updates data information in real time, and ensures the advancement of data received by the intelligent distributed power access device; the remote terminal system can also remotely control the intelligent distributed power access device to realize the active and passive execution of the intelligent distributed power access device. Therefore, the intelligent management of the intelligent distributed power access device can be realized through the remote terminal system, making the intelligent distributed power access device more intelligent.

[0085] What is disclosed above is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A data processing method for an intelligent distributed power access device, characterized in that: The following steps are involved: S1. When the intelligent distributed power access device is connected to a photovoltaic device, the device model of the photovoltaic device is obtained; S2. Search whether the device model is in a first data set, where the first data set is a data set containing device models of photovoltaic devices and their corresponding communication protocols pre-stored in the intelligent distributed power access device; S3. If the device model is not in the first data set, obtain a second data set from the terminal system through the Beidou positioning module and the first communication module, and search whether the device model is in the second data set; S4. If the device model is in the second data set, the intelligent distributed power access device obtains the communication protocol corresponding to the device model from the terminal system, and establishes communication with the photovoltaic device based on the communication protocol.

2. The data processing method of the intelligent distributed power access device according to claim 1 is characterized in that: In step S3, if the device model is not in the first data set, a second data set is obtained from the terminal system through the Beidou positioning module and the first communication module, and a search is performed to determine whether the device model is in the second data set, specifically including the following steps: The intelligent distributed power access device obtains Beidou positioning data containing its location information through a Beidou positioning module; The Beidou positioning data is sent to the terminal system through the first communication module, and the terminal system parses the area where the intelligent distributed power access device is located according to the Beidou positioning data; The terminal system searches for a second data set according to the area where the intelligent distributed power access device is located. The second data set is a device model data set of photovoltaic devices existing in the area where the intelligent distributed power access device is located.

3. The data processing method of the intelligent distributed power access device according to claim 2 is characterized in that: After step S4, the method further comprises: S41. Store the device model of the photovoltaic device and its corresponding communication protocol in the first data set.

4. The data processing method of the intelligent distributed power access device according to claim 3 is characterized in that: The method further comprises: S42, comparing the photovoltaic equipment model of the first data set with the photovoltaic equipment model of the second data set; S43. When the second data set contains a photovoltaic device model that is not present in the first data set, the intelligent distributed power access device obtains a communication protocol corresponding to the photovoltaic device model that is not present in the first data set from the terminal system; S44: storing photovoltaic equipment models and their corresponding communication protocols that are not in the first data set in the first data set.

5. The data processing method of the intelligent distributed power access device according to claim 4 is characterized in that: A Bloom filter is used to search whether the device model is in the first data set or the second data set.

6. The data processing method of the intelligent distributed power access device according to any one of claims 1 to 5, characterized in that: The method further comprises: When the intelligent distributed power access device successfully communicates with the photovoltaic equipment, the intelligent distributed power access device collects current voltage data and temperature and humidity data through the voltage acquisition module and the temperature and humidity sensor module; If the voltage data and the temperature and humidity data are abnormal, the abnormal information is reported to the terminal system through the first communication module.

7. The data processing method of the intelligent distributed power access device according to any one of claims 1 to 5, characterized in that: The method further comprises: The intelligent distributed power access device obtains location information in real time through the Beidou positioning module; When the location information changes abnormally, the abnormal change is uploaded to the terminal system through the first communication module; The terminal system prompts the technician to check the on-site status of the intelligent distributed power supply access device.

8. An intelligent distributed power access device, using the data processing method of the intelligent distributed power access device according to any one of claims 1 to 7, characterized in that: It includes a first communication module, a Beidou positioning module, an ARM chip, and a second communication module; the first communication module is used for data communication between the intelligent distributed power access device and the terminal system, the Beidou positioning module is used to obtain the location information of the intelligent distributed power access device, and the ARM chip is used for the data obtained by the intelligent distributed power access device; the second communication module is used for data communication between the intelligent distributed power access device and the photovoltaic equipment.

9. The intelligent distributed power access device according to claim 8, characterized in that: The intelligent distributed power supply access device also includes a temperature and humidity sensor module and a voltage sampling module.

10. The intelligent distributed power access device according to claim 9, characterized in that: The first communication module includes a 4G communication module, and the second communication module includes an HPLC module, a Bluetooth module, and a 485 communication module.

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