Management method for realizing automatic access of substation of power system to front-end system

Abstract

The invention provides a management method for realizing automatic access of a power system substation to a front-end system, and relates to the technical field of power monitoring systems, the method comprises the following steps: the communication state of the power system substation and the front-end system is configured, and the power system substation sends a connection request to the front-end system according to the communication state; the front-end system receives a connection request of the power system substation, updates a configuration library through information verification of the power system substation, and executes a communication response after the configuration library is updated; the front-end system obtains topological information and a sub-device model of the substation of the power system and suggests a communication link, and the substation of the power system executes configuration adjustment of a configuration library based on the communication link; the front-end system issues a control command to the power system substation, and the power system substation executes the control command and reports an execution result to the front-end system. According to the method, configuration library automatic modeling is carried out based on substation and sub-equipment information, and a corresponding protocol program is called to establish a data communication link with the substation.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power monitoring systems, and in particular to a management method for realizing automatic access of a substation of an electric power system to a front-end system. Background Art

[0002] The power monitoring system uses computers, communication equipment, and measurement and control units as basic tools, providing a basic platform for real-time data collection, switch status detection, and remote control of the power distribution system. It can form an arbitrarily complex monitoring system with detection and control equipment, and plays a core role in power distribution monitoring. It can help companies eliminate islands, reduce operating costs, improve production efficiency, and speed up the response to abnormalities in the power distribution process.

[0003] Data access to the front-end system is one of the important tasks in the field of power monitoring. When a substation is connected to the front-end system, the engineering personnel need to manually create a point table for the substation, and then send the point table of the substation and the communication method and communication link information of the substation to the front-end system configuration personnel through email or other external communication methods. The configuration personnel then manually add the information of the substation to the front-end system configuration library based on this information and create the corresponding data point model. Only then can the front-end system and the substation establish communication normally. Moreover, when the substation needs to add or delete sub-devices or change the point table, it is necessary to provide the point table file to the front-end system configuration personnel again, and the configuration personnel need to modify the configuration library again. This results in a large workload and high error rate when the substation is connected to the front-end system.

[0004] As the center of real-time data input and output in the power monitoring system, the front-end system mainly undertakes the real-time data communication processing task between the dispatch center and its substations. Therefore, the reliable operation of the front-end system is a prerequisite for the normal operation of the power monitoring system. Since the substation access to the front-end system has always relied on manual transmission and configuration of point meter information, the automation of access work is an urgent task.

[0005] For example, patent application number CN105871948A discloses a management method for automatic access and data authorization of the industrial Internet of Things, which includes substation monitoring centers distributed in different areas and a main monitoring center, and includes the following steps: the substation monitoring center collects industrial data in the area, and when data reporting is required, broadcasts the IP address of the substation monitoring center and the data source information corresponding to the substation monitoring center on a pre-agreed broadcast channel; the main monitoring center receives the IP address of the substation monitoring center through the broadcast channel, saves the IP address, and the data source information corresponding to the substation monitoring center; when the main monitoring center receives a data subscription request, it finds the IP address of the corresponding substation monitoring center according to the requested data source information, and sends a data transmission instruction to the corresponding substation monitoring center through the communication connection between the main monitoring center and the IP address, instructing the substation monitoring center to upload the data currently required by the main monitoring center.

[0006] The above method designs a management method for automatic access and data authorization of the industrial Internet of Things. This method stipulates the way in which the substation and the main control center transmit the substation communication address and data upload request and response. The premise of this method is that the substation equipment is completely unified, that is, the communication protocol and data point table definition of each substation are fixed, but the substation table of the actual power system is different, and this method has limitations.

[0007] For example, patent application number CN107945052A discloses a method for automatic access to distribution automation terminal information throughout the entire process. The implementation method includes the following steps: establishing a distribution terminal equipment information collection specification, unifying the modeling of the collection information of IED intelligent distribution terminals of different manufacturers and models, that is, distribution terminals with self-describing functions, and formulating a unified specification for the "three remote" collection information to achieve the purpose of interoperability; configuring a distribution terminal equipment information table template at the distribution automation master station, extending the modeling of primary equipment and secondary terminal equipment, and generating corresponding telesignaling / telemetry information, and the relationship between related protection signals; the distribution automation master station automatically generates an information point table that needs to be collected by the distribution terminal according to the information table template of the distribution terminal, and completes the fully automatic access of the distribution terminal information.

[0008] The above method formulates a unified standard for the collection of distribution terminal information, models the distribution terminal equipment, establishes a standardized template for distribution terminal information, and automatically generates and maintains the point table of terminal information based on the template. This method is mainly for automated management of the master station. The premise of this method is to manually provide the terminal information template to the master station. The master station imports the template to automatically add the corresponding configuration and modeling on the master station. This method does not achieve fully automated access to the terminal.

[0009] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0010] In view of this, the present invention provides a management method for realizing automatic access of a power system substation to a front-end system, so as to solve the above-mentioned problem.

[0011] In order to solve the above problems, the specific technical solutions adopted by the present invention are as follows:

[0012] A management method for realizing automatic access of a power system substation to a front-end system, the method comprising the following steps:

[0013] S1. Configure the communication status between the power system substation and the front-end system. The power system substation sends a connection request to the front-end system according to the communication status.

[0014] S2, the front-end system receives the connection request from the power system substation, verifies and updates the configuration library through the information of the power system substation, and executes the communication response after the configuration library is updated;

[0015] S3, the front-end system obtains the power system substation topology information and sub-equipment model, and recommends a communication link. The power system substation performs configuration adjustment of the configuration library based on the communication link;

[0016] S4. The front-end system sends a control command to the power system substation, and the power system substation executes the control command and reports the execution result to the front-end system.

[0017] Preferably, configuring the communication status between the power system substation and the front-end system, wherein the power system substation sends a connection request to the front-end system according to the communication status comprises the following steps:

[0018] S11, based on the message bus telemetry transmission protocol, the power system substation and the front-end system are connected to subscribe and publish;

[0019] S12. Configure the interaction topic and response message format between the power system substation and the front-end system;

[0020] S13. The power system substation publishes a connection request message to the front system and subscribes to a connection response.

[0021] Preferably, the front-end system receives the request from the power system substation, verifies and updates the configuration library through information of the power system substation, and executes the communication response after the configuration library is updated, including the following steps:

[0022] S21, after receiving the request from the power system substation, the front-end system identifies the equipment information of the power system substation;

[0023] S22, field matching the equipment information of the power system substation with the substation equipment information in the configuration library of the front-end system. If the match is successful, it means that the substation equipment information of the power system substation equipment exists in the configuration library, and the substation equipment information of the power system substation equipment is updated. Otherwise, the substation equipment information of the power system substation is added and updated in the configuration library;

[0024] S23. After the configuration library of the front-end system is updated, the communication compliance verification is performed on the request of the power system substation, and a connection response message is sent to the power system substation based on the verification result;

[0025] S24. The power system substation receives the response message from the front-end system and performs a response operation according to the content of the message.

[0026] Preferably, the field matching of the equipment information of the power system substation with the substation equipment information in the configuration library of the front-end system comprises the following steps:

[0027] S221, based on the equipment information of the power system substation, classify the equipment information using a progressive text classification method;

[0028] S222, based on the classification result, sort the equipment information of the power system substation and the substation equipment information in the configuration library according to the preset sorting rules to obtain a sorting result;

[0029] S223, based on the sorting result, sequentially combine the equipment information of the power system substation and the substation equipment information in the configuration library to obtain a combination result;

[0030] S224. Based on the combination result, the device information of the power system substation and the substation device information in the configuration library are matched using a character matching method.

[0031] Preferably, the classification process of the equipment information based on the equipment information of the power system substation using a progressive text classification method comprises the following steps:

[0032] S2211. Perform text segmentation processing on the equipment information of the power system substation, and convert the equipment information into a feature vector using feature extraction technology;

[0033] S2212. For each piece of device information, determine the K neighbors that are most similar to it using the KNN algorithm based on the feature vector, and calculate the degree of membership of each piece of device information;

[0034] S2213, performing preliminary classification of the device information according to the calculated membership degree;

[0035] S2214. Iteratively optimize the preliminary classification results to obtain the final classification results.

[0036] Preferably, for each piece of device information, determining the K most similar neighbors thereof by using a KNN algorithm based on a feature vector, and calculating the degree of membership of each piece of device information comprises the following steps:

[0037] S22121. Collect equipment sample information of the power system substation, perform text segmentation and feature extraction, and establish a sample feature vector set;

[0038] S22122. For each feature vector of device information, calculate its distance from all feature vectors in the sample feature vector set.

[0039] S22123. Sort the sample feature vectors in the sample feature vector set according to the calculated distance, and select the first K samples as neighbors;

[0040] S22124. Calculate the membership of each device information using the membership calculation formula.

[0041] Preferably, the preliminary classification of the device information according to the calculated membership degree comprises the following steps:

[0042] S22131, presetting a first membership threshold and a second membership threshold for classifying device information, wherein the first membership threshold is greater than the second membership threshold;

[0043] S22132. For each piece of device information, if the membership calculated for the device information is greater than the first membership threshold, it indicates that the device information definitely belongs to the category; if the membership calculated for the device information is less than the second membership threshold, it indicates that the device information definitely does not belong to the category; if the membership calculated for the device information is between the first membership threshold and the second membership threshold, it indicates that the device information is of an uncertain category.

[0044] Preferably, the iterative optimization of the preliminary classification results to obtain the final classification results comprises the following steps:

[0045] S22141. For device information of uncertain categories in the preliminary classification results, randomly add new feature vectors to form new feature vectors;

[0046] S22142. Recalculate the membership degree of the device information of the uncertain category based on the new feature vector;

[0047] S22143. Reclassify the uncertain category of device information according to the new degree of membership, and return to step S22141 until there is no uncertain category of device information, and obtain the final classification result.

[0048] Preferably, the matching of the equipment information of the power system substation and the substation equipment information in the configuration library by using a character matching method based on the combination result comprises the following steps:

[0049] S2241, comparing the combined result of the equipment information of the power system substation with the combined result of the equipment information of the substation in the configuration library character by character;

[0050] S2242. Analyze the comparison result. If there are more than a preset number of characters that do not match, it means that the match fails. Otherwise, it means that the match is successful.

[0051] Preferably, after the configuration library of the front-end system is updated, the communication compliance verification of the request of the power system substation is performed, and based on the verification result, a connection response message is sent to the power system substation, including the following steps:

[0052] S231, based on a preset communication protocol, the front-end system verifies the communication protocol of the request to the power system substation;

[0053] S232. If the communication protocol verification result of the power system substation's request is satisfied, the front-end system sends a success response message to the power system substation; otherwise, the front-end system sends a failure response message to the power system substation.

[0054] Preferably, the operation of the power system substation receiving a response message from the front-end system and executing a response according to the message content includes:

[0055] If a successful response message is received, it means that the connection is successful, and the subscription connection is executed between the power system substation and the front-end system;

[0056] If a failure response message is received, it means that the connection has failed. The power system substation performs modification and adjustment of the communication protocol and resends a connection request to the front-end system.

[0057] Preferably, the front-end system obtains the power system substation topology information and sub-device model, and recommends a communication link, and the power system substation performs configuration adjustment of the configuration library based on the communication link, including the following steps:

[0058] S31, the front-end system issues an information acquisition request to the power system substation, and the power system substation sends information to the front-end system according to the information acquisition request; the information acquisition request includes topology information acquisition and sub-device model acquisition;

[0059] S32, the front-end system establishes a communication link according to the communication status of the power system substation;

[0060] S33, based on the communication link, the power system substation initiates a configuration library adjustment request to the front system;

[0061] S34. The front-end system adjusts the information of the configuration library according to the configuration library adjustment request.

[0062] Preferably, the front-end system establishes a communication link according to the communication status of the power system substation, including the following steps:

[0063] S321. Based on the communication status of the power system substation, the front-end system queries the communication device type from the configuration library;

[0064] S322, the front-end system searches and calls the corresponding link management module in the communication mode call association table in the preset database according to the queried communication device type;

[0065] S323, the front-end system then searches the communication protocol from the configuration library, and searches and calls the corresponding communication program module in the communication program call association table in the database according to the communication protocol;

[0066] S324. The front-end system uses the link management module and the communication program module to establish a stable communication link with the substation.

[0067] The beneficial effects of the present invention are:

[0068] 1. The present invention adopts a communication method to transmit the substation communication configuration and sub-device information to the front-end system. Based on the information, the front-end system automatically models and establishes a data communication link with the main station. First, there is no manual intervention in the management of the substation information, including operations such as adding, deleting, and updating sub-devices of the substation and updating the sub-device point table information; secondly, the front-end system automatically models the configuration library based on the substation and sub-device information, and calls the corresponding protocol program to establish a data communication link with the substation.

[0069] 2. The present invention can take into account the differences in communication protocols and sub-equipment point tables of each substation, and send all substation information to the front-end system through communication. At the same time, the front-end system will automatically establish a substation model in the configuration library based on the substation information, and call the protocol program matching the substation to establish a data communication link with the substation. In addition, the present invention also takes into account that the substation information will be adjusted during actual on-site operation, and a series of management methods have been formulated for these adjustment operations to deal with various scenarios.

[0070] 3. The present invention can ensure that the information in the configuration library is the latest and accurate by matching the equipment information of the power system substation with the information in the configuration library of the front-end system, thereby avoiding communication failures or data errors caused by inconsistent information. The use of a progressive text classification method to classify and process the equipment information can improve the efficiency and accuracy of matching. In particular, when processing a large amount of equipment information, this method can significantly reduce the time and resources required for matching. In the process of equipment information classification and matching, iterative optimization and membership calculation methods are used to continuously improve the accuracy and efficiency of classification, thereby further improving the performance and stability of the entire system. In the process of equipment information matching, the character comparison method is used to compare the combination results character by character, which can ensure the accuracy of the match and avoid matching failures caused by character errors or omissions. By analyzing the comparison results and setting a preset number of character mismatch thresholds, it is possible to more accurately determine whether the match is successful, thereby improving the reliability and robustness of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0072] Figure 1 is a flow chart of a management method for realizing automatic access of a power system substation to a front-end system according to an embodiment of the present invention;

[0073] Figure 2 It is a schematic diagram of the principle of modeling a front-end system in a management method for realizing automatic access of a power system substation to a front-end system according to an embodiment of the present invention;

[0074] Figure 3 A flow chart of automatic access of a substation to a front-end system in a management method for realizing automatic access of a substation of a power system to a front-end system according to an embodiment of the present invention;

[0075] Figure 4 A timing diagram of a substation accessing a front-end system in a management method for realizing automatic access of a substation of a power system to a front-end system according to an embodiment of the present invention;

[0076] Figure 5 A substation model management timing diagram in a management method for realizing automatic access of a power system substation to a front-end system according to an embodiment of the present invention;

[0077] Figure 6The present invention is a timing diagram of substation equipment control in a management method for realizing automatic access of a power system substation to a front-end system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0078] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0079] According to an embodiment of the present invention, a management method for realizing automatic access of a power system substation to a front-end system is provided.

[0080] It should be noted that when a substation is connected to the front-end system, it is necessary to first establish the substation model in the front-end system configuration library. According to the substation model, the front-end system calls the corresponding protocol program to establish a data communication link with the substation and collect substation data. If there is an error in the establishment of the substation model, it will directly lead to the substation being unable to connect to the front-end system or the substation data being incompletely uploaded. Figure 2 shown.

[0081] The present invention is further described with reference to the accompanying drawings and specific embodiments. Figure 1 As shown, according to an embodiment of the present invention, a management method for realizing automatic access of a power system substation to a front-end system comprises the following steps:

[0082] S1. Configure the communication status between the power system substation and the front-end system. The power system substation sends a connection request to the front-end system according to the communication status.

[0083] As a preferred implementation, the configuration of the communication status between the power system substation and the front-end system, wherein the power system substation sends a connection request to the front-end system according to the communication status, comprises the following steps:

[0084] S11, based on the message bus telemetry transmission protocol, the power system substation and the front-end system are connected to subscribe and publish;

[0085] S12. Configure the interaction topic and response message format between the power system substation and the front-end system;

[0086] S13. The power system substation publishes a connection request message to the front system and subscribes to a connection response.

[0087] Specifically, if Figure 3As shown in the figure, the front-end system and each substation use the MQTT (message bus telemetry transmission protocol) protocol to complete message interaction. The MQTT-Broker (MQTT service agent) is deployed on the front-end system. Each substation only needs to configure the front-end system IP to publish messages to the front-end system based on MQTT. After the front-end system subscribes to the corresponding message topic, it can receive messages from each substation. This mechanism can provide many-to-many message distribution and can meet the needs of multiple substations accessing the front-end system at the same time.

[0088] The front-end system and each substation communicate using the MQTT publish / subscribe mode, and subscription and publishing are based on topics. The topic format is: / topic version / front-end system ID or substation ID / message execution category / message action ( / {v1} / {fepServerId / stationId} / {Mess Type} / {Mess Command}). At the same time, the front-end system and substation can be expanded to realize business-specific functions, including:

[0089] {v1}: indicates that the currently defined theme version is v1, and v2, v3 and other versions will be developed later according to business needs;

[0090] {fepServerId / stationId}: indicates the front-end system ID or substation ID used when the substation establishes an MQTT persistent connection with the front-end system. This ID is unique within the system. fepServerId indicates the front-end system ID, and stationId indicates the substation ID.

[0091] {Mess Type}: indicates the execution category of the message, which mainly includes station, device, model, and topo. Station indicates that the topic is a substation message, device indicates a device control message, model indicates a substation model message, and topo indicates a substation topology message;

[0092] {Mess Command}: indicates the action of the message, such as control, data sending, request or response. The main types are command, data, request, response, update and reply.

[0093] The main contents and uses of Topic are shown in Table 1, where the direction values ​​are up and down. When it is up, it means the topic is published by the substation and subscribed by the front-end system; when it is down, it means the topic is published by the front-end system and subscribed by the substation.

[0094] Table 1 Topic summary

[0095]

[0096]

[0097] In addition, the functions of the substation and the front-end system interaction include connection management, topology management, model management, device control, etc. Connection management includes substation request for connection, response to connection request, etc. Topology management includes request and response of topology information, request and response of topology update, etc. Model management includes request and upload of substation device model, etc. Device control includes device restart, component program restart, etc.

[0098] The messages that the substation interacts with the front-end system are described in JSON format, and their common message fields are shown in Table 2 and Table 3.

[0099] Table 2 General format of request message

[0100]

[0101] Table 3 General format of response message

[0102]

[0103] Among them, the values ​​that can be selected in the "code" field of the response are shown in Table 4;

[0104] Table 4 Response code encoding format

[0105]

[0106]

[0107] S2, the front-end system receives the connection request from the power system substation, verifies and updates the configuration library through the information of the power system substation, and executes the communication response after the configuration library is updated;

[0108] It is necessary to add that, if Figure 4 As shown, the front-end system subscribes to the Topic: / v1 / {fepServerId} / station / request through a long connection, waiting for the substation connection request.

[0109] When a substation needs to access, it publishes a connection request message to Topic: / v1 / {fepServerId} / station / request and subscribes to the connection response Topic: / v1 / {fepServerId} / station / response to wait for the response message from the front-end system. The fields are described as follows:

[0110] 1) The value of the type field is: EVENT_LINKUP;

[0111] 2) The param field is defined as shown in Table 5 below;

[0112] Table 5 Substation access param field description

[0113]

[0114]

[0115] In the table, IEC stands for International Electrotechnical Commission.

[0116] As a preferred implementation, the front-end system receives a request from a power system substation, verifies and updates the configuration library through information of the power system substation, and executes a communication response after the configuration library is updated, including the following steps:

[0117] S21, after receiving the request from the power system substation, the front-end system identifies the equipment information of the power system substation;

[0118] It should be noted that the front-end system will continue to monitor a specific topic in order to capture connection requests from power system substations in real time. When new requests are published to this topic, the front-end system will immediately receive these requests.

[0119] After receiving the request, the front-end system will parse its content to extract key device information. This information usually includes the substation serial number (stationSN), type (stationType), name (stationName), manufacturer information (mfgInfo), communication protocol (commProtocol), communication device type (commType), communication IP address (commIP) and communication port number (commPort).

[0120] S22, field matching the equipment information of the power system substation with the substation equipment information in the configuration library of the front-end system. If the match is successful, it means that the substation equipment information of the power system substation equipment exists in the configuration library, and the substation equipment information of the power system substation equipment is updated. Otherwise, the substation equipment information of the power system substation is added and updated in the configuration library;

[0121] As a preferred implementation, the field matching of the equipment information of the power system substation with the substation equipment information in the configuration library of the front-end system includes the following steps:

[0122] S221, based on the equipment information of the power system substation, classify the equipment information using a progressive text classification method;

[0123] Specifically, the classification process of the equipment information based on the equipment information of the power system substation using the progressive text classification method includes the following steps:

[0124] S2211. Perform text segmentation processing on the equipment information of the power system substation, and convert the equipment information into a feature vector using feature extraction technology;

[0125] It should be noted that text segmentation is the process of dividing a continuous text string into independent vocabulary units. For the equipment information of the power system substation, the purpose of word segmentation is to extract key fields such as equipment name, model, serial number, manufacturer information, etc. from the text for subsequent processing and analysis.

[0126] Feature extraction is the process of converting text data into numerical feature vectors for subsequent calculation and comparison. For the equipment information of power system substations, the purpose of feature extraction is to convert the word units after segmentation into numerical features that can reflect the characteristics of the equipment.

[0127] Commonly used feature extraction methods include:

[0128] Bag of Words model: Each word in the text is used as a feature, and the number of times each word appears in the text is counted to form a feature vector. This method is simple and easy to understand, but it ignores the order and context information of the words.

[0129] Term frequency-inverse document frequency: Based on the bag-of-words model, this method considers the frequency of occurrence of a word in the entire corpus and weights the features. It can reflect the importance of a word, but it also ignores the order and context of the words.

[0130] For the equipment information of the power system substation, the bag-of-words model or the word frequency-inverse document frequency method can be selected to use the segmented vocabulary units as features, count their occurrence times or weighted values ​​in the equipment information, and form a feature vector of fixed length.

[0131] If the device information contains some special fields, such as serial number, IP address, etc., these fields can be processed and features extracted separately. For example, the serial number can be used as an independent feature, or the IP address can be split into four numerical features.

[0132] S2212. For each piece of device information, determine the K neighbors that are most similar to it using the KNN algorithm based on the feature vector, and calculate the degree of membership of each piece of device information;

[0133] Specifically, for each piece of device information, determining the K neighbors most similar to it by using the KNN algorithm based on the feature vector, and calculating the membership degree of each piece of device information includes the following steps:

[0134] S22121. Collect equipment sample information of the power system substation, perform text segmentation and feature extraction, and establish a sample feature vector set;

[0135] S22122. For each feature vector of device information, calculate its distance from all feature vectors in the sample feature vector set.

[0136] It should be noted that, for each feature vector of the device information to be classified, its distance from all feature vectors in the sample feature vector set can be calculated by Euclidean distance.

[0137] S22123. Sort the sample feature vectors in the sample feature vector set according to the calculated distance, and select the first K samples as neighbors;

[0138] S22124. Calculate the membership of each device information using the membership calculation formula.

[0139] It should be noted that membership is a core concept in fuzzy set theory, which indicates the degree to which an element belongs to a fuzzy set. In classification problems, membership can be understood as the possibility or probability that a device information belongs to a certain category. For the KNN algorithm, the calculation of membership is usually based on distance measurement. The smaller the distance, the greater the influence of the neighbor on the current device information, so its membership will be correspondingly higher.

[0140] In which, assume that x is the feature vector of the current device information, x i is the feature vector of the i-th sample in the sample feature vector set, d(x,x i ) is x and x i The distance between them. Then x belongs to category C j The membership degree u(x,C j ) can be calculated as:

[0141]

[0142] Among them, N j It belongs to category C j The neighbor set of M is the total number of categories. This formula evaluates the degree of membership of the current device information to each category by calculating the proportion of the sum of the reciprocals of the distances between the current device information and its neighbors belonging to each category.

[0143] S2213, performing preliminary classification of the device information according to the calculated membership degree;

[0144] Specifically, the preliminary classification of the device information according to the calculated membership degree includes the following steps:

[0145] S22131, presetting a first membership threshold and a second membership threshold for classifying device information, wherein the first membership threshold is greater than the second membership threshold;

[0146] It should be noted that 1>first membership threshold>second membership threshold>0.

[0147] S22132. For each piece of device information, if the membership calculated for the device information is greater than the first membership threshold, it indicates that the device information definitely belongs to the category; if the membership calculated for the device information is less than the second membership threshold, it indicates that the device information definitely does not belong to the category; if the membership calculated for the device information is between the first membership threshold and the second membership threshold, it indicates that the device information is of an uncertain category.

[0148] S2214. Iteratively optimize the preliminary classification results to obtain the final classification results.

[0149] Specifically, the iterative optimization of the preliminary classification results to obtain the final classification results includes the following steps:

[0150] S22141. For device information of uncertain categories in the preliminary classification results, randomly add new feature vectors to form new feature vectors;

[0151] It should be noted that after the initial classification, some device information may be encountered whose membership value is between the preset first membership threshold and the second membership threshold, and these device information are classified as uncertain categories. This uncertainty may be caused by the insufficiency of feature vectors, the limitations of the classification model, or the ambiguity of the data itself.

[0152] In order to reduce this uncertainty, new feature vectors are added to the device information of these uncertain categories. These new features can be:

[0153] Transformation based on existing data: For example, mathematical transformation (such as logarithmic transformation, standardization, etc.) is performed on existing features to generate new features.

[0154] Combining features: Combining multiple existing features into new features to capture the potential relationships between them.

[0155] Expert knowledge: Add new descriptive or quantitative features to device information based on the knowledge or experience of domain experts.

[0156] External Data Sources: Extract additional features from other relevant data sources to supplement the existing feature set.

[0157] Once the new features to be added are determined, they are merged with the original feature vector to form a new feature vector containing more information. This new feature vector will be used for subsequent membership calculations and classification decisions.

[0158] S22142. Recalculate the membership degree of the device information of the uncertain category based on the new feature vector;

[0159] S22143. Reclassify the uncertain category of device information according to the new degree of membership, and return to step S22141 until there is no uncertain category of device information, and obtain the final classification result.

[0160] It should be noted that the device information of the uncertain category is reclassified according to the new membership degree, which may involve moving the device information from the uncertain category to a certain category, or keeping it in the uncertain category (but the membership degree may change).

[0161] If there is still device information of uncertain categories, return to step S22141, continue to add new feature vectors and recalculate the membership. This process will be iterated until all device information is classified into certain categories, that is, there is no device information of uncertain categories. When all device information is classified into certain categories, the iterative optimization process ends and the final classification result is obtained.

[0162] S222, based on the classification result, sort the equipment information of the power system substation and the substation equipment information in the configuration library according to the preset sorting rules to obtain a sorting result;

[0163] Specifically, the sorting rules can be set according to actual needs. Common sorting rules include:

[0164] Sort by category: Sort the device information by the category it belongs to, for example, sort by major category first, then by minor category.

[0165] Sort by attributes: Sort by one or more attributes of device information, such as device name, device model, installation date, etc.

[0166] Sort by importance: Sort the equipment information according to its importance in the power system, for example, key equipment is placed first and non-key equipment is placed last.

[0167] S223, based on the sorting result, sequentially combine the equipment information of the power system substation and the substation equipment information in the configuration library to obtain a combination result;

[0168] S224. Based on the combination result, the device information of the power system substation and the substation device information in the configuration library are matched using a character matching method.

[0169] Specifically, the method of matching the device information of the power system substation and the substation device information in the configuration library by using a character matching method based on the combination result includes the following steps:

[0170] S2241, comparing the combined result of the equipment information of the power system substation with the combined result of the equipment information of the substation in the configuration library character by character;

[0171] S2242. Analyze the comparison result. If there are more than a preset number of characters that do not match, it means that the match fails. Otherwise, it means that the match is successful.

[0172] Specifically, when there is more than or equal to one character mismatch in the comparison result, it can be determined that the match fails.

[0173] S23. After the configuration library of the front-end system is updated, the communication compliance verification is performed on the request of the power system substation, and a connection response message is sent to the power system substation based on the verification result;

[0174] As a preferred implementation, after the configuration library of the front-end system is updated, the communication compliance verification of the request of the power system substation is performed, and based on the verification result, a connection response message is sent to the power system substation, including the following steps:

[0175] S231, based on a preset communication protocol, the front-end system verifies the communication protocol of the request to the power system substation;

[0176] It should be noted that the front-end system performs communication protocol verification on the request sent by the power system substation based on the pre-set communication protocol. The verification content includes but is not limited to the communication protocol, communication equipment type, data format, check code, etc.

[0177] S232. If the communication protocol verification result of the power system substation's request is satisfied, the front-end system sends a success response message to the power system substation; otherwise, the front-end system sends a failure response message to the power system substation.

[0178] After the front-end system adds / updates the substation information, it sends a connection response message to the substation, publishes the Topic: / v1 / {fepServerId} / station / response, and subscribes to the Topic in the Topic table whose direction is up and contains the stationId. The fields are described as follows:

[0179] 1) The value of the type field is: EVENT_LINKUP;

[0180] 2) Code field: When the communication protocol or communication device type requested by the slave station does not match, the response failure return code is returned, otherwise the response is 200 success;

[0181] 3)param field: None.

[0182] S24. The power system substation receives the response message from the front-end system and performs a response operation according to the content of the message.

[0183] As a preferred implementation, the operation of the power system substation receiving a response message from the front-end system and executing a response according to the message content includes:

[0184] If a successful response message is received, it means that the connection is successful, and the subscription connection is executed between the power system substation and the front-end system;

[0185] If a failure response message is received, it means that the connection has failed. The power system substation performs modification and adjustment of the communication protocol and resends a connection request to the front-end system.

[0186] It should be noted that when the substation receives the response message of Topic: / v1 / {fepServerId} / station / response, if the return code in the code field is failure, it means that the request connection failed. The substation makes corresponding modifications. When the return code in the code field is 200 / 202, it means success. The substation subscribes to the Topic summary table with the direction down and containing the Topic of the substation's stationId.

[0187] S3. The front-end system obtains the power system substation topology information and sub-equipment model, and recommends a communication link. The power system substation performs configuration adjustments of the configuration library based on the communication link.

[0188] It should be noted that for the substation that has agreed to the connection request, the front-end system needs to further obtain the substation's topology information and sub-device model. The substation can also actively initiate operations such as adding, deleting, and updating sub-devices. The timing diagram is as follows Figure 5 shown.

[0189] As a preferred implementation, the front-end system obtains the power system substation topology information and sub-device model, and recommends a communication link. The power system substation performs configuration adjustment of the configuration library based on the communication link, including the following steps:

[0190] S31, the front-end system issues an information acquisition request to the power system substation, and the power system substation sends information to the front-end system according to the information acquisition request; the information acquisition request includes topology information acquisition and sub-device model acquisition;

[0191] S32, the front-end system establishes a communication link according to the communication status of the power system substation;

[0192] Specifically, the front-end system establishes a communication link according to the communication status of the power system substation, including the following steps:

[0193] S321. Based on the communication status of the power system substation, the front-end system queries the communication device type from the configuration library;

[0194] S322, the front-end system searches and calls the corresponding link management module in the communication mode call association table in the preset database according to the queried communication device type;

[0195] S323, the front-end system then searches the communication protocol from the configuration library, and searches and calls the corresponding communication program module in the communication program call association table in the database according to the communication protocol;

[0196] S324. The front-end system uses the link management module and the communication program module to establish a stable communication link with the substation.

[0197] S33, based on the communication link, the power system substation initiates a configuration library adjustment request to the front system;

[0198] S34. The front-end system adjusts the information of the configuration library according to the configuration library adjustment request.

[0199] Specifically, the front-end system needs to obtain the topology information of the substation.

[0200] Publish request information to Topic: / v1 / {stationId} / topo / request. The data format refers to the general message format. The fields are described as follows:

[0201] 1) The value of the type field is: TOPE_STATION;

[0202] 2)param field: none;

[0203] The substation responds to the request for device topology information. The response message of the substation topology information is published to Topic: / v1 / {stationId} / topo / response. The data format refers to the general format of the message. The fields are described as follows:

[0204] 1) The value of the type field is: TOPE_STATION;

[0205] 2) Code field: When the substation device topology information is ready, it will reply 200 success, otherwise it will reply 400 failure;

[0206] 3) param field: the definition is shown in Table 6 below;

[0207] Table 6 Topic response substation topology information param field description

[0208] Fields type Required describe nodeInfos array yes Substation device information list, list size 1 to 100

[0209] Among them, array <nodeinfos>The field description is shown in Table 7 below;

[0210] Table 7array <nodeinfos>Field Description

[0211] Fields type Required describe nodeId string yes Sub-device unique identifier name string yes Sub-device name description string yes Sub-device description mfgInfo string yes Sub-device manufacturer information nodeModel string yes Sub-device model modelId string no Sub-device model number

[0212] After the front-end system successfully receives the substation topology information (code return code 200), it first finds the "substation" object in the configuration library, and adds a "sub-device" object list under the "substation" object according to the sub-device list information contained in the nodeInfos field. Before adding, "whether the nodeId sent is equal to the nodeId field value in the existing sub-device object" is used as the identification condition for whether the "sub-device" exists. If the "sub-device" object already exists, the nodeId, nodename, modelId and other field values ​​under the object are updated. Otherwise, a new "sub-device" is added and the field values ​​are entered. The object structure is as follows: Figure 2 As shown in the front-end system modeling, each sub-device object will generate a unique identifier deviceObid for the front-end system.

[0213] The front-end system requests the sub-device model. The front-end system also needs to obtain the model point table information of each sub-device from the substation, and publish the sub-device model request message to Topic: / v1 / {stationId} / model / request. The data format refers to the general format of the message, and its fields are described as follows:

[0214] 1) The value of the type field is: MODEL_DATAINFO;

[0215] 2) The param field is defined as shown in Table 8 below;

[0216] Table 8 Request sub-device model param field description

[0217] Fields type Required describe nodeId string yes Sub-device unique identifier name string yes Sub-device name modelId string no Sub-device model number deviceObid string yes Unique device identifier generated by the front-end system

[0218] When a substation responds to a request from a sub-device model, it publishes a response message of the sub-device model to Topic: / v1 / {stationId} / model / data. The data format is based on the general format. The fields are described as follows:

[0219] 1) The value of the type field is: MODEL_DATAINFO;

[0220] 2) Code field: When the sub-device model information is ready, it will reply 200 success, otherwise it will reply 400 failure;

[0221] 3) param field: the definition is shown in Table 9 below;

[0222] Table 9 Request sub-device model param field description

[0223] Fields type Required describe nodeId string yes Sub-device unique identifier name string yes Sub-device name modelId string no Sub-device model number deviceObid string yes Unique device identifier generated by the front-end system

[0224] Among them, array <dotinfos>The field description is shown in Table 10 below;

[0225] Table 10array <dotinfos>Field Description

[0226]

[0227]

[0228] After the front-end system receives the successful response from the sub-device model, it adds the corresponding "data model" object under the "sub-device" object in the front-end system configuration library, and creates various data point objects as the front-end system data access points. After all sub-device models are fully stored in the library, the substation information has been automatically imported into the front-end system. The object structure is as follows: Figure 2 The front-end system modeling is shown. Then, according to the properties of the "communication configuration" object, the front-end system can establish a communication link with the substation, collect substation data and store the collected data in the real-time library. The properties of "communication configuration" include: "communication protocol", "communication device type", "communication IP", "communication port number", and the process of establishing a communication link is as follows:

[0229] 1) According to the "communication device type", the corresponding link management module is called based on the "communication method call association table" in the database (as shown in Table 11 below). For example, if it is TCPServer, the Net_tcpServer link management module is called, and the "communication IP" and "communication port number" are used as input parameters during the call;

[0230] 2) According to the "communication protocol", the corresponding communication program is called based on the "communication program call association table" in the database (as shown in Table 13 below). For example, for the IEC104 protocol, the IEC104 communication program module Protocol_IEC104 of the front-end system is called. The communication program module is responsible for processing the data sent by the substation and issuing corresponding control commands.

[0231] Table 11 Communication method call association table

[0232] Communication equipment type Link management module name TCPServer Net_tcpServer TCPClient Net_tcpClient UDP Net_UDP

[0233] Table 12 Communication program call association table

[0234] Communication Protocol Communication program name IEC104 Protocol_IEC104 IEC101 Protocol_IEC101 Modbus Protocol_Modbus … …

[0235] When a substation initiates a request to add a sub-device to the front-end system, when a new sub-device needs to be connected to the substation, it should publish a request message to add a sub-device to Topic: / v1 / {stationId} / topo / update. The data format refers to the general format of the message, and its fields are described as follows:

[0236] 1) The value of the type field is: TOPE_ADD;

[0237] 2) param field: defined as shown in Table 13 below, array <nodeinfos>The field definitions are the same as those in Table 7.

[0238] Table 13 Description of the param field of the add sub-device request

[0239]

[0240] The front-end system responds to the substation's request to add a sub-device and publishes a response message to Topic: / v1 / {stationId} / topo / reply to add a sub-device. The data format refers to the general format of the message. The fields are described as follows:

[0241] 1) The value of the type field is: TOPE_ADD;

[0242] 2) code field: If the current system allows the addition of the sub-device, it will reply 200 success, otherwise it will reply with the corresponding failure code. For example, if the nodeId of the sub-device information applied for addition already exists, it will reply 402 failure;

[0243] 3)param field: none;

[0244] When the front-end system allows the addition of the sub-device, the new sub-device model is summoned, and the sub-device information and model point table information are added to the configuration library.

[0245] When the substation initiates a request to delete a sub-device to the front-end system, it should publish a sub-device deletion request message to Topic: / v1 / {stationId} / topo / update. The data format refers to the general format of the message, and the fields are described as follows:

[0246] 1) The value of the type field is: TOPE_DELETE;

[0247] 2) param field: defined as shown in Table 14 below, array <nodeinfos>The field definitions are the same as those in Table 7.

[0248] Table 14 Param field description of the request to delete a sub-device

[0249]

[0250] When the front-end system responds to the substation's request to delete a sub-device, the front-end system publishes a response message to delete the sub-device to Topic: / v1 / {stationId} / topo / reply. The fields are described as follows:

[0251] 1) The value of the type field is: TOPE_DELETE;

[0252] 2) Code field: If the current system allows the deletion of the sub-device, it will reply with 200 success, otherwise it will reply with the corresponding failure code. For example, if the sub-device to be deleted does not exist, it will reply with 404 failure.

[0253] 3)param field: none;

[0254] When the front-end system recognizes the substation's request to delete a sub-device, it deletes the sub-device object in the configuration library and releases the sub-device object's deviceObid and other information.

[0255] The substation initiates a request to the front-end system to update the sub-device; when the substation has a sub-device model that needs to be changed, it should publish a request message to update the sub-device to Topic: / v1 / {stationId} / topo / update. The data format refers to the general format of the message, and its fields are described as follows:

[0256] 1) The value of the type field is: TOPE_AMEND;

[0257] 2) param field: defined as shown in Table 1-15 below, array <nodeinfos>The field definitions are the same as those in Table 7.

[0258] Table 15 Param field description of the sub-device update request

[0259]

[0260] The front-end system responds to the substation's request to update the sub-device; it publishes a response message to update the sub-device to Topic: / v1 / {stationId} / topo / reply. The data format refers to the general format of the message, and its fields are described as follows:

[0261] 1) The value of the type field is: TOPE_AMEND;

[0262] 2) code field: if the current system allows the sub-device to be updated, it will reply with 200 success, otherwise it will reply with the corresponding failure code. For example, if the sub-device information nodeId requested for update already exists, it will reply with 402 failure;

[0263] 3)param field: none;

[0264] When the front-end system allows the sub-device to be updated, the sub-device model is re-summoned, and the sub-device information and the model point table information are updated in the configuration library.

[0265] S4. The front-end system sends a control command to the power system substation, and the power system substation executes the control command and reports the execution result to the front-end system.

[0266] Specifically, the front-end system can send control commands to the substation, including equipment restart, component program restart, etc. The timing diagram is as follows Figure 6 As shown, the specific steps are as follows:

[0267] When the front-end system sends a control command to the substation, it sends the control command to Topic: / v1 / {stationId} / device / command. The data format refers to the general format of the message. The fields are described as follows:

[0268] 1) The value of the type field is: CMD_CTRL;

[0269] 2) param field: the definition is shown in Table 16 below;

[0270] Table 16 Device control command param field description

[0271]

[0272] The substation reports the result of the device control command execution to the front-end system and publishes the Topic: / v1 / {stationId} / device / reply. The data format refers to the general format of the message. The fields are described as follows:

[0273] 1) The value of the type field is: CMD_CTRL;

[0274] 2) Code field: If the control command is executed successfully, it will reply 200 success, otherwise it will reply 400 failure;

[0275] 3)param field: None.

[0276] In summary, with the help of the above technical solution of the present invention, the present invention adopts a communication method to transmit the substation communication configuration and sub-device information to the front-end system, and the front-end system automatically builds models based on the information and establishes a data communication link with the main station. First, there is no manual intervention in the management of substation information, including operations such as adding, deleting, and updating sub-devices of the substation and updating the sub-device point table information; secondly, the front-end system automatically builds a configuration library based on the substation and sub-device information, and calls the corresponding protocol program to establish a data communication link with the substation. The present invention can take into account the differences in the communication protocols and sub-device point tables of each substation, and send all the information of the substation to the front-end system through communication. At the same time, the front-end system will automatically establish a substation model in the configuration library according to the substation information, and call the protocol program matching the substation to establish a data communication link with the substation. In addition, the present invention also takes into account that the information of the substation will be adjusted during actual operation on site, and a series of management methods have been formulated for these adjustment operations to deal with various scenarios. The present invention can ensure that the information in the configuration library is the latest and accurate by matching the equipment information of the power system substation with the information in the configuration library of the front-end system by field, thereby avoiding communication failures or data errors caused by inconsistent information. The progressive text classification method is used to classify the equipment information, which can improve the efficiency and accuracy of matching. Especially when processing a large amount of equipment information, this method can significantly reduce the time and resources required for matching. In the process of equipment information classification and matching, iterative optimization and membership calculation methods are used to continuously improve the accuracy and efficiency of classification, thereby further improving the performance and stability of the entire system. In the process of equipment information matching, the character comparison method is used to compare the combination results character by character, which can ensure the accuracy of the matching and avoid matching failures caused by character errors or omissions. By analyzing the comparison results and setting a preset number of character mismatch thresholds, it is possible to more accurately determine whether the match is successful, thereby improving the reliability and robustness of the entire system.

[0277] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program code.

[0278] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.< / nodeinfos> < / nodeinfos> < / nodeinfos> < / dotinfos> < / dotinfos> < / nodeinfos> < / nodeinfos>

Claims

1. A management method for realizing automatic access of a power system substation to a front-end system, characterized in that: The method comprises the following steps: S1. Configure the communication status between the power system substation and the front-end system. The power system substation sends a connection request to the front-end system according to the communication status. S2, the front-end system receives the connection request from the power system substation, verifies and updates the configuration library through the information of the power system substation, and executes the communication response after the configuration library is updated; S3, the front-end system obtains the power system substation topology information and sub-equipment model, and recommends a communication link. The power system substation performs configuration adjustment of the configuration library based on the communication link; S4. The front-end system sends a control command to the power system substation, and the power system substation executes the control command and reports the execution result to the front-end system.

2. A management method for realizing automatic access of a power system substation to a front-end system according to claim 1, characterized in that: The configuration of the communication status between the power system substation and the front-end system, wherein the power system substation sends a connection request to the front-end system according to the communication status, comprises the following steps: S11, based on the message bus telemetry transmission protocol, the power system substation and the front-end system are connected to subscribe and publish; S12. Configure the interaction topic and response message format between the power system substation and the front-end system; S13. The power system substation publishes a connection request message to the front system and subscribes to a connection response.

3. A management method for realizing automatic access of a power system substation to a front-end system according to claim 1, characterized in that: The front-end system receives a connection request from a power system substation, verifies and updates a configuration library through information of the power system substation, and executes a communication response after the configuration library is updated, including the following steps: S21, after receiving the request from the power system substation, the front-end system identifies the equipment information of the power system substation; S22, field matching the equipment information of the power system substation with the substation equipment information in the configuration library of the front-end system. If the match is successful, it means that the substation equipment information of the power system substation equipment exists in the configuration library, and the substation equipment information of the power system substation equipment is updated. Otherwise, the substation equipment information of the power system substation is added and updated in the configuration library; S23. After the configuration library of the front-end system is updated, the communication compliance verification is performed on the request of the power system substation, and a connection response message is sent to the power system substation based on the verification result; S24. The power system substation receives the response message from the front-end system and performs a response operation according to the content of the message.

4. A management method for realizing automatic access of a power system substation to a front-end system according to claim 3, characterized in that: The field matching of the equipment information of the power system substation with the equipment information of the substation in the configuration library of the front-end system comprises the following steps: S221, based on the equipment information of the power system substation, classify the equipment information using a progressive text classification method; S222, based on the classification result, sort the equipment information of the power system substation and the substation equipment information in the configuration library according to the preset sorting rules to obtain a sorting result; S223, based on the sorting result, sequentially combine the equipment information of the power system substation and the substation equipment information in the configuration library to obtain a combination result; S224. Based on the combination result, the device information of the power system substation and the substation device information in the configuration library are matched using a character matching method.

5. A management method for realizing automatic access of a power system substation to a front-end system according to claim 4, characterized in that: The method of classifying the equipment information based on the equipment information of the power system substation by using a progressive text classification method comprises the following steps: S2211. Perform text segmentation processing on the equipment information of the power system substation, and convert the equipment information into a feature vector using feature extraction technology; S2212. For each piece of device information, determine the K neighbors that are most similar to it using the KNN algorithm based on the feature vector, and calculate the degree of membership of each piece of device information; S2213, performing preliminary classification of the device information according to the calculated membership degree; S2214. Iteratively optimize the preliminary classification results to obtain the final classification results.

6. A management method for realizing automatic access of a power system substation to a front-end system according to claim 5, characterized in that: For each piece of device information, determining the K neighbors most similar to it by using the KNN algorithm based on the feature vector, and calculating the membership degree of each piece of device information includes the following steps: S22121. Collect equipment sample information of the power system substation, perform text segmentation and feature extraction, and establish a sample feature vector set; S22122. For each feature vector of device information, calculate its distance from all feature vectors in the sample feature vector set. S22123. Sort the sample feature vectors in the sample feature vector set according to the calculated distance, and select the first K samples as neighbors; S22124. Calculate the membership of each device information using the membership calculation formula.

7. A management method for realizing automatic access of a power system substation to a front-end system according to claim 6, characterized in that: The preliminary classification of the device information according to the calculated membership degree includes the following steps: S22131, presetting a first membership threshold and a second membership threshold for classifying device information, wherein the first membership threshold is greater than the second membership threshold; S22132. For each piece of device information, if the membership calculated for the device information is greater than the first membership threshold, it indicates that the device information definitely belongs to the category; if the membership calculated for the device information is less than the second membership threshold, it indicates that the device information definitely does not belong to the category; if the membership calculated for the device information is between the first membership threshold and the second membership threshold, it indicates that the device information is of an uncertain category.

8. A management method for realizing automatic access of a power system substation to a front-end system according to claim 7, characterized in that: The iterative optimization of the preliminary classification results to obtain the final classification results includes the following steps: S22141. For device information of uncertain categories in the preliminary classification results, randomly add new feature vectors to form new feature vectors; S22142. Recalculate the membership degree of the device information of the uncertain category based on the new feature vector; S22143. Reclassify the uncertain category of device information according to the new degree of membership, and return to step S22141 until there is no uncertain category of device information, and obtain the final classification result.

9. A management method for realizing automatic access of a power system substation to a front-end system according to claim 8, characterized in that: Based on the combination result, matching the equipment information of the power system substation with the substation equipment information in the configuration library by using the character matching method comprises the following steps: S2241, comparing the combined result of the equipment information of the power system substation with the combined result of the equipment information of the substation in the configuration library character by character; S2242. Analyze the comparison result. If there are more than a preset number of characters that do not match, it means that the match fails. Otherwise, it means that the match is successful.

10. A management method for realizing automatic access of a power system substation to a front-end system according to claim 3, characterized in that: After the configuration library of the front-end system is updated, the communication compliance verification of the request of the power system substation is performed, and a connection response message is sent to the power system substation based on the verification result, including the following steps: S231, based on a preset communication protocol, the front-end system verifies the communication protocol of the request to the power system substation; S232. If the communication protocol verification result of the power system substation's request is satisfied, the front-end system sends a success response message to the power system substation; otherwise, the front-end system sends a failure response message to the power system substation.

11. A management method for realizing automatic access of a power system substation to a front-end system according to claim 10, characterized in that: The operation of the power system substation receiving the response message from the front-end system and executing the response according to the message content includes: If a successful response message is received, it means that the connection is successful, and the subscription connection is executed between the power system substation and the front-end system; If a failure response message is received, it means that the connection has failed. The power system substation performs modification and adjustment of the communication protocol and resends a connection request to the front-end system.

12. A management method for realizing automatic access of a power system substation to a front-end system according to claim 1, characterized in that: The front-end system obtains the power system substation topology information and sub-equipment model, and recommends a communication link. The power system substation performs configuration adjustment of the configuration library based on the communication link, including the following steps: S31, the front-end system issues an information acquisition request to the power system substation, and the power system substation sends information to the front-end system according to the information acquisition request; the information acquisition request includes topology information acquisition and sub-device model acquisition; S32, the front-end system establishes a communication link according to the communication status of the power system substation; S33, based on the communication link, the power system substation initiates a configuration library adjustment request to the front system; S34. The front-end system adjusts the information of the configuration library according to the configuration library adjustment request.

13. A management method for realizing automatic access of a power system substation to a front-end system according to claim 12, characterized in that: The front-end system establishes a communication link according to the communication status of the power system substation, including the following steps: S321. Based on the communication status of the power system substation, the front-end system queries the communication device type from the configuration library; S322, the front-end system searches and calls the corresponding link management module in the communication mode call association table in the preset database according to the queried communication device type; S323, the front-end system then searches the communication protocol from the configuration library, and searches and calls the corresponding communication program module in the communication program call association table in the database according to the communication protocol; S324. The front-end system uses the link management module and the communication program module to establish a stable communication link with the substation.

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