A configuration-free and maintenance-free method and system for relay protection fault information substation

Abstract

The present invention discloses a configuration-free and maintenance-free method and system for a relay protection fault information substation, which relates to the technical field of computer platform load balancing, including: obtaining all network node information through a security main station and constructing a network topology diagram; marking the newly added nodes in the network topology diagram; establishing communication with the marked network nodes, and sending all data originals of the marked network nodes to the safety zone I through the dispatching data network; performing ledger configuration on the security substation at the plant station end, and downloading configuration file data to the security substation; parsing the message at the security main station; establishing a protocol library at the security main station, and performing protocol conversion and data parsing on the original message sent by the newly added node. The configuration-free and maintenance-free method for a relay protection fault information substation provided by the present invention realizes that the data received by the relay protection fault information main station is completely consistent with the original data at the plant station end, thereby improving work efficiency and reducing work costs.

Description

Technical Field

[0001] The present invention relates to the technical field of computer platform load balancing, and in particular to a configuration-free and maintenance-free method and system for a relay protection fault information substation. Background Art

[0002] The relay protection fault information management system collects the real-time / non-real-time operation, configuration and fault information of the relay protection devices and other equipment in the substation, and provides a unified analysis platform for the relay protection devices, which is conducive to the dispatching department to quickly grasp the actual fault status of the power grid and the relay protection action behavior, timely analyze the power grid accidents, timely and correctly judge and quickly restore the system, and grasp the status of the relay protection equipment, effectively analyze the relay protection action, and improve the dispatching management and operation management level. The relay protection fault information substation is arranged at the plant station end, which can collect the real-time or non-real-time operation, configuration and fault information of the relay protection, recorder and other intelligent devices in the substation, and realize the functions of model analysis, protocol conversion, information upload and so on for different manufacturers.

[0003] The traditional method of configuring a relay protection fault information substation is to call up the configuration file of the protection substation at the plant station end, and modify the configuration file through the configuration tools and configuration models of each protection substation manufacturer. The configuration content includes but is not limited to standardized configurations such as IP address, protocol type, data type, and unit. The staff will modify and download it to the relay protection fault information substation. After restarting, the configuration file of the relay protection fault information substation can be updated and applied.

[0004] The traditional maintenance method of the relay protection fault information substation mainly consists of inspecting the appearance and operating status of the relay protection fault information substation and regularly backing up the configuration files.

[0005] The above-mentioned traditional relay protection fault information substation configuration and maintenance method mainly has the following problems:

[0006] 1. In the process of modifying the configuration file of the relay protection fault information substation, it is very easy to cause configuration errors, non-standard and non-uniform configurations due to manual errors on site, resulting in distortion of the data sent to the relay protection fault information master station. After the data sent from the plant station is configured in the relay protection fault information substation, there is a certain difference between the data received by the relay protection fault information master station and the original data at the plant station, and the data fidelity rate is only 90%.

[0007] 2. The maintenance and configuration tools of relay protection fault information substations from different manufacturers are not the same, and the maintenance and configuration tools cannot be used interchangeably.

[0008] 3. When configuring the 103 communication protocol, unified modeling is required through the relay protection fault information substation. However, the modeling capabilities of relay protection fault information substations from different manufacturers vary. The data format, data authenticity, bit error rate, etc. after modeling vary according to the equipment hardware parameters and software iterations, resulting in serious deficiencies or even inability to carry out advanced application development of the data.

[0009] 4. When the Baoxin substation fails or encounters an abnormal situation, the master station cannot configure the data sent from the plant station. When the data is interrupted, the master station cannot quickly check the entire link and cannot quickly determine the cause of the communication interruption. During daily maintenance, the master station cannot monitor the accuracy of data sent to the substation.

[0010] In summary, there is an urgent need for a configuration-free and maintenance-free method for a relay protection fault information substation, in which the data of the relay protection device in the plant station is sent as is through the relay protection fault information substation, so that the data fidelity rate reaches 100%. Summary of the invention

[0011] In view of the above-mentioned problems, the present invention is proposed.

[0012] Therefore, the technical problem solved by the present invention is: solving the problem of different configuration tools of substations from different manufacturers, and at the same time realizing data normalization processing for all protocols, checking the entire link at the main station end, and realizing monitoring of the data accuracy of the substation.

[0013] In order to solve the above technical problems, the present invention provides the following technical solutions: a configuration-free and maintenance-free method for a relay protection fault information substation, comprising:

[0014] Obtain all network node information through the Baoxin main station and build a network topology map;

[0015] Mark the newly added nodes in the network topology diagram;

[0016] Establish communication with the marked network node, and send all the original data of the marked network node to the safe I zone through the dispatching data network;

[0017] Configure the ledger of the Baoxin substation at the plant end and download the configuration file data to the Baoxin substation;

[0018] Parse the message at the Baoxin master station;

[0019] Establish a protocol library at the Baoxin master station to perform protocol conversion and data analysis on the original messages sent by the newly added nodes;

[0020] The acquisition of all network node information includes automatically discovering new network nodes, aggregating all network nodes and their neighbor information of the information security system through a message passing mechanism, and updating the feature representation of the node, using the feature of each known node to represent the information of its adjacent nodes;

[0021] The construction of the network topology diagram includes constructing a node feature matrix H (l) , represents the initial characteristics of each node in the security system, l represents the number of layers, the station-side interval layer is the 0th layer, the station-side security substation is the 1st layer, and the security master station is the 2nd layer, l≤2 and is an integer;

[0022] Establish an adjacency matrix A, and use the adjacency matrix to represent the connection relationship between nodes in the graph;

[0023] Aggregate the information of neighbor nodes through the aggregation graph convolution layer and update the node features, which is expressed as,

[0024]

[0025] Among them, I N represents the N-dimensional identity matrix, A represents the adjacency matrix, Represents the adjacency matrix A and the identity matrix I N of and, yes The degree matrix of for Element-wise application, i is the horizontal element in the matrix, j is the vertical element in the matrix, H (l) is the feature matrix of the l-th layer node, W (l) represents the weight matrix of the lth layer, N represents the dimension of the matrix, D represents the standard value of the adjacency matrix A, and H (0) =X,H (2) =Z, X represents the basic features of the nodes of the relay protection device at the 0th layer, Z represents the features received by the second layer protection master station after the first layer, and ReLU is the activation function;

[0026] By H (l+1) Represent the activation matrix of the newly added nodes and output the information of the newly added nodes.

[0027] As a preferred solution of the configuration-free and maintenance-free method for relay protection fault information substation of the present invention, wherein: the marking of the newly added nodes in the network topology diagram includes collecting and determining the information of the newly added nodes to be marked, and distinguishing them from the original network nodes by color coding and text labels;

[0028] The information of the newly added node is expressed as:

[0029]

[0030] Among them, X represents the basic features of the nodes of the relay protection device at the 0th layer, Z represents the features received by the second layer protection signal master station after the first layer, Y represents the label of the newly added node, and softmax and ReLU represent activation functions respectively;

[0031] The color coding includes marking the newly added nodes in red and the original nodes in green; the text label mainly includes parsing the IP of the newly added node, confirming the network path of the plant to which it belongs by looking up the information of the plant-side Baoxin substation routing protocol, and determining the plant to which it belongs by looking up the corresponding records in the routing table, and labeling the newly added network node with the corresponding plant name.

[0032] As a preferred solution of the configuration-free and maintenance-free method for relay protection fault information substation of the present invention, wherein: the communication with the marked network node includes adopting the TCP message format, adding a TCP message header and a message tail;

[0033] The TCP message includes a preparatory message segment and a data message segment. The preparatory message segment is a parameter used in the TCP message header to establish communication transmission between the master station, the slave station and the marked node. The target IP address in the TCP message is represented by dotted decimal, and each 8 bits is divided into a segment, with a total of 4 segments. Each byte in the message represents a segment, the lowest byte represents 25-32 bits, and the highest byte represents 1-8 bits. When it is necessary to record messages of all target IP addresses, the target IP is filled with 0;

[0034] In the target port number, the low bit is in front and the high bit is in the back. When it is necessary to record the messages of all target port numbers, the target port number is filled with 0;

[0035] The TCP message header includes the source port number, destination port number, sequence number, confirmation number, receive window, header field, and option field. The message length is specified while establishing communication. The data segment message contains the direct data interaction between the marked new node and the security master station. The data segment message contains all the data information of the protection device of the marked new node. The data is added to the TCP message header and then sent in its original version. The TCP message header is applicable to all relay protection protocols.

[0036] As a preferred solution of the configuration-free and maintenance-free method for relay protection fault information substation described in the present invention, wherein: the ledger configuration of the plant-side security substation includes configuring the port number and IP information of the newly added node at the plant-side according to the source port number, destination port number, and IP address option field information in the TCP preparatory segment message, configuring the interval name, protection model, and protection type information for the newly added node in combination with the work ticket information and the maintenance application data information in the OMS system, and finally configuring the security substation ledger at the security master station;

[0037] The downloading of the configuration file data to the Baoxin substation is to adopt the dynamic negotiation of the sliding window size between the two communicating parties based on the flow control technology. During the TCP connection establishment phase, the Baoxin main station and the Baoxin substation negotiate the window size, and the Baoxin main station reserves a data buffer area;

[0038] The main station of the security information system fills in the window size size1 in the transmission mark of the ASDU105 message, and the sub-station of the security information system fills in the acceptable size size2 in the transmission mark of the reply ASDU106 message, but it must not exceed the size given by the main station of the security information system; the main station of the security information system sends size2 ASDU107 messages at a time, and waits for the confirmation of the ASDU108 message from the sub-station of the security information system;

[0039] Based on the negotiation results, the trustworthy substation sends a data byte stream that meets the window size, applies the Markov decision process model to obtain the congestion degree n, and determines whether a congestion state occurs. If it is determined to be a congestion state, the sending window is reduced to 0.1×(10-n) times the original size, where n is the congestion degree of the data, and the time interval for timeout retransmission is expanded by 0.2n times.

[0040] As a preferred solution of the configuration-free and maintenance-free method for relay protection fault information substation described in the present invention, wherein: the parsing of the message at the security master station includes parsing the message at the security master station, removing the TCP message header and tail, and obtaining the original data message of the newly added node, wherein the original data message refers to the original data of the protection device that has not been configured;

[0041] The protocol library includes parsing the protocols of all relay protection manufacturers at each stage at the master station, using protocol conversion technology to classify, model and uniformly configure the data of relay protection devices.

[0042] Another object of the present invention is to provide a relay protection fault information substation configuration-free and maintenance-free system, which can solve the problem that the maintenance and configuration tools of relay protection fault information substations of different manufacturers are different in the traditional relay protection fault information substation maintenance system and the various maintenance and configuration tools cannot be used interchangeably.

[0043] In order to solve the above technical problems, the present invention provides the following technical solutions: a configuration-free and maintenance-free system for a relay protection fault information substation, comprising: a data acquisition module, a node marking module, a node communication module, a ledger configuration module, a message parsing module and a protocol parsing module; the data acquisition module is used to obtain all network node information through the Baoxin main station and construct a network topology map; the node marking module is used to mark the newly added nodes in the network topology map; the node communication module is used to establish communication with the marked network nodes, and the marked network nodes send all data originals of the marked network nodes to the safety zone I through the scheduling data network through TCP messages, adding TCP message headers and tails; the ledger configuration module is used to perform ledger configuration on the Baoxin substation at the plant station end, and download configuration file data to the Baoxin substation; the message parsing module is used to parse messages at the Baoxin main station; the protocol parsing module is used to establish a protocol library at the Baoxin main station, and perform protocol conversion and data parsing on the original messages sent from the newly added nodes.

[0044] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the above-mentioned method for configuration-free and maintenance-free relay protection fault information substation are implemented.

[0045] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the above-mentioned method for configuration-free and maintenance-free relay protection fault information substation.

[0046] Beneficial effects of the present invention: The configuration-free and maintenance-free method for the relay protection fault information substation provided by the present invention avoids the problem of distorted data sent to the relay protection fault information master station due to configuration errors, non-standard and non-uniform configurations caused by manual errors on site during the modification of the relay protection fault information substation configuration file at the plant site. By converting and configuring the data sent from the plant site in the relay protection fault information master station, the data received by the relay protection fault information master station is completely consistent with the original data at the plant site, and the data fidelity and data standardization rate reach 100%.

[0047] By making the plant station configuration-free and maintenance-free, the problem of different maintenance and configuration tools for relay protection fault information substations from different manufacturers is eliminated. A unified protocol conversion library is used at the master station, which is more efficient.

[0048] By eliminating configuration and maintenance at the plant and station end, and establishing a regular transfer library at the master station end, the requirements for equipment performance at the plant and station end are reduced, avoiding the high data format, data authenticity, and bit error rate after modeling caused by differences in modeling capabilities of relay protection fault information substations from different manufacturers, thereby ensuring that advanced application development of the data can be carried out.

[0049] The maintenance-free Baoxin substation on the plant side can automatically discover and add network nodes in the Baoxin network, avoiding the troubles of relevant staff. The large protocol library on the main station side eliminates the problems of different protocols of multiple relay protection manufacturers, different communications, complex substation configurations, and difficulty in unifying configuration tools, thereby improving work efficiency and reducing work costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0051] Figure 1 An overall flow chart of a configuration-free and maintenance-free method for a relay protection fault information substation provided by an embodiment of the present invention.

[0052] Figure 2 This is an overall structural diagram of a relay protection fault information substation configuration-free and maintenance-free system provided in the second embodiment of the present invention. DETAILED DESCRIPTION

[0053] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0054] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0055] Example 1

[0056] Reference Figure 1 , as an embodiment of the present invention, provides a configuration-free and maintenance-free method for a relay protection fault information substation, comprising:

[0057] When a new interval is added to the security substation, the configuration-free and maintenance-free method of the relay protection fault information substation mainly includes: the configuration-free and maintenance-free method of the relay protection fault information substation for daily operation and newly added nodes;

[0058] The configuration-free method of the relay protection fault information substation of the newly added node includes:

[0059] S1: Obtain all network node information through the Baoxin master station and build a network topology map.

[0060] The network node is the relay protection device connected to the power plant end security substation in the power system. Each relay protection device has an IP, which is a separate network node, and each network node is unique.

[0061] The acquisition of all network node information includes automatically discovering new network nodes, aggregating all network nodes and their neighbor information of the information security system through a message passing mechanism, and updating the feature representation of the node, using the feature of each known node to represent the information of its adjacent nodes.

[0062] The construction of the network topology diagram includes constructing a node feature matrix H (l) , represents the initial characteristics of each node in the security system, l represents the number of layers, the station-side interval layer is the 0th layer, the station-side security substation is the 1st layer, and the security master station is the 2nd layer, l≤2 and is an integer;

[0063] Establish an adjacency matrix A, and use the adjacency matrix to represent the connection relationship between nodes in the graph;

[0064] Aggregate the information of neighbor nodes through the aggregation graph convolution layer and update the node features, which is expressed as,

[0065]

[0066] Among them, I N represents the N-dimensional identity matrix, A represents the adjacency matrix, Represents the adjacency matrix A and the identity matrix I N of and, yes The degree matrix of for Element-wise application, i is the horizontal element in the matrix, j is the vertical element in the matrix, H (l) is the feature matrix of the l-th layer node, W (l) represents the weight matrix of the lth layer, N represents the dimension of the matrix, D represents the standard value of the adjacency matrix A, and H (0) =X,H (2) =Z, X represents the basic features of the nodes of the relay protection device at the 0th layer, Z represents the features received by the second layer protection master station after the first layer, and ReLU is the activation function;

[0067] By H (l+1) Represent the activation matrix of the newly added nodes and output the information of the newly added nodes;

[0068] Considering Not normalized and H (l) The multiplication operation will change the original feature distribution. After standardization, the symmetric and normalized matrix is ​​expressed as The normalization process allows the processed matrix to be used to balance the contribution of plant-side protection device nodes of different degrees to the aggregation of newly added node information.

[0069] By obtaining network node information through the Baoxin main station and superimposing the node feature matrix, the activation matrix of the newly added nodes can be effectively characterized, and the information of the newly added nodes can be clarified. The conventional method of obtaining new nodes is usually obtained manually. This method automatically obtains the new node information through the algorithm of the node feature matrix, which solves the problem that the main station personnel cannot automatically carry out the configuration of new nodes through the algorithm, thereby improving the work efficiency of obtaining new node data.

[0070] S2: Mark the newly added nodes in the network topology diagram.

[0071] Marking the newly added nodes in the network topology diagram includes collecting and determining the information of the newly added nodes to be marked, substituting X and Z in S1 into S2 to obtain the labels, and distinguishing them from the original network nodes by color coding and text labels;

[0072] The information of the newly added node is expressed as:

[0073]

[0074] Among them, X represents the basic characteristics of the nodes of the relay protection device at the 0th layer, Z represents the characteristics received by the second-layer protection master station after the first layer, Y represents the label of the newly added node, softmax and ReLU represent activation functions respectively. The role of softmax is to convert the known node information of the relay protection device into the probability distribution of the newly added node, and the role of ReLU is to perform nonlinear transformation on the known node information of the relay protection device.

[0075] The traditional method is to manually add new node information and enter it manually. The method of the present invention automatically obtains the new node information through calculation based on the known node information, and then automatically obtains the primary device name in combination with the OMS system and the power grid management platform.

[0076] The color coding includes marking the newly added nodes in red and the original nodes in green; the text label mainly includes parsing the IP of the newly added node, confirming the network path of the plant to which it belongs by looking up the information of the plant-side Baoxin substation routing protocol, and determining the plant to which it belongs by looking up the corresponding records in the routing table, and labeling the newly added network node with the corresponding plant name.

[0077] When a new plant is added, there are multiple network nodes that cannot be matched to the corresponding plant. In this case, a direct IP comparison is performed on each newly added node. By analyzing the routing table, the consistency of the IP is found, and the matching IP is labeled with the new plant. The new nodes are then classified as having the same plant label as the new plant.

[0078] For the plant and station labels of the newly added plants and stations, the name of the substation is determined by importing the maintenance application through the secondary intelligent operation and maintenance platform in combination with the OMS system and the work ticket data through the power grid management platform. The secondary intelligent operation and maintenance platform at least includes the Baoxin master station and has the function of interacting with the OMS system and the power grid management platform system.

[0079] The import of maintenance application and work ticket data into the power grid management platform includes the first step: intercepting all maintenance application information and work ticket information in the time period of the newly added contact point, the second step: preliminary screening of the text information in the work ticket and maintenance application, and further screening of the work ticket and maintenance application information with fields including "new", "renovation" and "replacement". The third step: extracting the substation name and primary equipment name of the newly added interval name in the above maintenance application and work ticket, and assigning them to the newly added node.

[0080] The OMS system shall at least have a maintenance application function, and the power grid management platform system shall at least have a work ticket function.

[0081] The newly added nodes are distinguished from the regular nodes by color coding + text marking. The substation name and the interval name of the newly added node are determined by combining the work ticket data of the power grid management platform and the maintenance application data of the OMS system. There is no need to manually enter the substation name and the primary equipment name of the new interval. At the same time, the primary equipment ledger can be directly generated to facilitate subsequent communication and modeling.

[0082] In the color coding + text marking method of conventional nodes, text acquisition is generally manually input. Compared with the conventional node marking method, this method can obtain the work ticket data of the power grid management platform and the maintenance application data of the OMS system through the dispatching data network, and automatically identify the substation name and the interval name of the newly added node.

[0083] S3: Establish communication with the marked network node, and send all data originals of the marked network node to the safe I zone through the scheduling data network.

[0084] The original data is the data sent by the protection device at the plant end.

[0085] The security zone I represents the production control area of ​​the dispatching data network, which is used for the production and control business data circulation of the power system.

[0086] The original version uploading method is: using the TCP message format, adding a TCP message header and a message tail, and the data between the header and the tail is the same as the original data.

[0087] The TCP message includes a preparatory message segment and a data message segment. The preparatory message segment is a parameter in the TCP message header used to establish communication transmission between the main station, the substation, and the marked node. The target IP address in the TCP message is specified in this method as "dotted decimal" representation, each 8 bits is divided into a segment, a total of 4 segments, each byte in the message represents a segment, the lowest byte represents 25-32 bits, and the highest byte represents 1-8 bits. When it is necessary to record the message of all target IP addresses, the target IP is filled with 0; the data message segment is the data sent and received.

[0088] In the target port number, the low bit is in front and the high bit is in the back. When it is necessary to record the messages of all target port numbers, the target port number is filled with 0;

[0089] The TCP message header includes the source port number, destination port number, sequence number, confirmation number, receive window, header field, and option field. The message length is specified while establishing communication. The data segment message contains the direct data interaction between the marked new node and the security master station. The data segment message contains all the data information of the protection device of the marked new node. The data is added to the TCP message header and then sent in its original version. The TCP message header is applicable to all relay protection protocols.

[0090] The conventional method of sending data to the Baoxin substation is to perform protocol conversion at the Baoxin substation, and then send the data to the main station after data analysis and modeling. The difference between this step and the conventional data sending of the Baoxin substation is that the method of adding TCP message headers and tails is used to unify the formats of data with different protocols and formats. That is, no matter what the content in the message header and tail is, the format can be unified by adding the same header and tail. At the same time, no changes are required to the data in the TCP message, so that the Baoxin substation plant and station do not need to perform protocol conversion, analysis and modeling, which greatly saves the workload of the plant and station, and avoids the plant and station from setting the protocol, model and ledger.

[0091] S4: Perform ledger configuration on the Baoxin substation at the plant site, and download the configuration file data to the Baoxin substation.

[0092] The configuration of the ledger of the plant-side security substation includes configuring the port number and IP information of the newly added node at the plant-side according to the source port number, destination port number, and IP address option field information in the TCP preparation segment message, configuring the interval name, protection model, and protection type information for the newly added node in combination with the work ticket information and the maintenance application data information in the OMS system, and finally configuring the security substation ledger at the security master station;

[0093] The downloading of configuration file data to the Baoxin substation adopts the sliding window size dynamically negotiated by the communicating parties. The communication process is: the Baoxin main station fills in the window size size1 in the transmission flag of the ASDU105 message, and the Baoxin substation fills in the acceptable size size2 in the transmission flag of the reply ASDU106 message, but it must not exceed the size given by the Baoxin main station; then the Baoxin main station sends size2 ASDU107 messages at a time, and waits for an ASDU108 confirmation from the Baoxin substation.

[0094] When downloading configuration file data to the Baoxin substation, the two communicating parties dynamically negotiate the sliding window size based on flow control technology. This allows the Baoxin substation to send data packets from multiple plant stations at the same time without receiving confirmation from the Baoxin main station, thereby greatly improving network throughput.

[0095] During the TCP connection establishment phase, the Baoxin master station and the Baoxin substation negotiate the window size, and the Baoxin master station reserves a data buffer area. The specific negotiation process is that the Baoxin master station fills in the window size size1 in the transmission flag of the ASDU105 message, and the Baoxin substation fills in the acceptable size size2 in the transmission flag of the reply ASDU106 message, but it must not exceed the size given by the Baoxin master station; then the Baoxin master station sends size2 ASDU107 messages at a time, waiting for an ASDU108 message confirmation from the Baoxin substation.

[0096] Based on the negotiation results, the trustworthy substation sends a data byte stream that meets the window size, obtains the congestion level n, and determines whether a congestion state occurs. If it is determined to be a congestion state, the sending window is reduced to 0.1×(10-n) times the original size, where n is the congestion level of the data, and the time interval for timeout retransmission is extended by 0.2n times.

[0097] Integrate the Baoxin data in the Baoxin main station, and determine the negotiation window size, network traffic data, and data buffer status based on the source port number, destination port number, and IP address options;

[0098] The source port number is the port number used by the source device in the TCP connection and is obtained from the source port field of the TCP preparatory segment message.

[0099] The destination port number is the port number used by the target device in the TCP connection and is obtained from the destination port field of the TCP preparatory segment message.

[0100] The IP address option contains additional IP address option information configured by the network device and is obtained from the IPP address option field of the TCP preparatory segment message.

[0101] The window size is the TCP window size negotiated during the TCP connection establishment phase based on the source port number, destination port number, and IP address options.

[0102] It is determined by the Baoxin master station and the Baoxin substation through the exchange of ASDU105 and ASDU106 messages, taking into account the maximum receiving window size of both parties.

[0103] The network traffic data is the real-time network traffic data monitored in the TCP connection, which is obtained by analyzing the data byte stream (ASDU107 and ASDU108 messages) exchanged between the Baoxin master station and the Baoxin slave station.

[0104] The data buffer state is the current state of the data buffer reserved by the Baoxin master station. The usage of the buffer is updated based on the ASDU108 message confirmation reply of the Baoxin slave station.

[0105] Apply the Markov decision process model:

[0106] The system state is defined by the data buffer state, network traffic data and window size, integrating network parameters, providing the necessary context for decision making, expressed as;

[0107] State(t)=(Buffer status (t),Traffic data (t),Size config (t))

[0108] Among them, State(t) represents the state at time t, t represents the time variable, which represents the specific state or action at time point t, and Buffer status (t) represents the data buffer state at time t, indicating the usage of the buffer area of ​​the Baoxin master station. data (t) represents the network traffic data captured at time t, reflecting the real-time data flow between the Baoxin master station and the substation. Size config (t) represents the negotiated TCP window size at time t, which is determined during the connection establishment phase based on the port and IP configuration.

[0109] Select an action strategy based on the current status, optimize the TCP window size or adjust the retransmission time strategy to respond to real-time network conditions and expected changes.

[0110] Define the state transfer function and reward function to quantify the change in state after each action and the benefits and costs of the action.

[0111] The transition function describes the change in state after taking an action and is expressed as,

[0112] T(State(t),Action(t))→State(t+1)

[0113] Where T represents the state transition function, which describes the state change after taking an action, and Action(t) represents the action taken at time t based on the current state, aiming to optimize network performance.

[0114] The reward function evaluates the reward or cost obtained based on the result of the action, expressed as,

[0115] R(State(t),Action(t))=-CostofCongestion+PerformanceBenefit

[0116] Among them, R represents the reward function, which evaluates the reward or cost obtained based on the result of the action, Cost of Congestion represents the congestion cost, which quantifies the negative impact caused by network congestion, and Performance Benefit represents the performance benefit, which is the positive benefit obtained from the optimization action.

[0117] According to the calculated expected reward, the congestion index is quantified and expressed as,

[0118]

[0119] Among them, C(t) represents the congestion index at time t, max Action It means choosing an action that maximizes the subsequent expected value among all possible actions. represents the expectation operator, which calculates the expected value of a random variable given a strategy and action. Represents the summation symbol, which is used to accumulate the values ​​from time t to T (the termination time of the decision), γ τ-t Represents the exponential form of the discount factor, γ is a value between 0 and 1, which is used to reduce the importance of future rewards relative to immediate rewards. This factor ensures that the model is more sensitive to upcoming state changes. R(State(τ), Action(τ)) represents the reward function, which evaluates the reward or cost obtained based on the action Action(τ) taken at time τ and the state State(τ) of the system. τ represents a time index used to iterate each time point from t to T. T represents the termination time point, which represents the boundary of decision-making and evaluation within the time range t to T.

[0120] Normalize C(t) to a scale of 0-10 and express it as:

[0121]

[0122] Where n represents the normalized congestion index, whose value ranges from 0 to 10, min(C) represents the minimum possible value of the congestion index C(t), and max(C) represents the maximum possible value of the congestion index C(t).

[0123] If n≥5, it is judged as a congestion state, the sending window is reduced to 0.1×(10-n) times the original, and the time interval for timeout retransmission is extended by 0.2n times.

[0124] The send window size is dynamically adjusted according to the value of the congestion indicator n. As n increases, that is, the network congestion increases, the send window is reduced more significantly, reducing the number of data packets in the network and helping to alleviate congestion.

[0125] In high congestion situations, significantly reducing the send window can prevent too much data from being transmitted in the network at the same time, thereby reducing the packet loss rate and avoiding congestion spirals, preventing further congestion caused by continuous data loss and retransmissions.

[0126] By directly linking n to window size adjustments, a method is provided to precisely control traffic flow, adjusting the transmission rate based on real-time network conditions.

[0127] When congestion is low, the window is kept large to utilize the available bandwidth, while when congestion increases, the window is reduced, which reduces packet loss and retransmission, thereby improving the utilization of network resources.

[0128] As the congestion index n increases, increasing the retransmission time interval can reduce the situation where short delays are misjudged as packet loss. When the network is congested, avoiding unnecessary retransmissions can significantly reduce the network burden.

[0129] By appropriately increasing the retransmission time interval, data packets are allowed more time to reach the destination, especially in a congested network environment, thereby improving the overall data transmission efficiency.

[0130] By adjusting the retransmission time according to the congestion level, the network can better adapt to changing network conditions. Increasing the retransmission time interval helps reduce invalid and redundant retransmissions caused by misjudgment of network status.

[0131] Traditional network congestion judgment methods mainly judge packet loss rate, delay measurement and bandwidth utilization.

[0132] In packet loss rate judgment, the packet loss rate is monitored. If the packet loss rate exceeds a certain threshold, it is considered that the network is congested. This method is simple and intuitive, but it cannot accurately reflect all types of network congestion, because packet loss may be caused by a variety of reasons, such as network configuration errors, hardware failures, etc.

[0133] Another is to measure the round-trip time (RTT) of the data packet. An increase in RTT usually means an increase in congestion on the network path. However, changes in RTT may also be caused by other factors such as link changes, route optimization, etc., rather than just congestion.

[0134] Congestion is determined by monitoring the bandwidth usage of the network. If the network traffic approaches or reaches the upper limit of the network bandwidth, it is considered to be congested. This method relies on accurate bandwidth measurement and may not be sensitive enough in a dynamically changing network environment.

[0135] Although these traditional methods are effective in certain scenarios, they are not timely or accurate enough in responding to network status under the complex network architecture and highly variable traffic conditions faced by the configuration-free and maintenance-free relay protection fault information substation of the present invention.

[0136] The method of the present invention dynamically adjusts network decisions by applying the Markov decision process MDP, which is not based on static thresholds or single parameters, but takes into account multiple network status indicators. This makes the decision process more accurate and adaptable, and can make the best response to the actual network conditions.

[0137] By integrating data cache status, real-time traffic data, and window size parameters, it provides a comprehensive view of network status, helps understand and predict network congestion, and can capture early signals of congestion more effectively than traditional methods.

[0138] Network management no longer relies on empirical judgment or simple thresholds, but becomes a quantitative and adjustable process. It automatically adapts to changes in network conditions and adjusts network parameters in real time to optimize performance.

[0139] Adjusting the send window size The purpose of reducing the send window to 0.1×(10-n) times the original size is to: reduce network load. In the early stage of network congestion, reducing the send window can directly reduce the data sending rate and reduce the number of packets in the network. Directly respond to the current load of the network, and prevent buffer overflow and router queues from being too long by reducing the amount of data sent, thereby avoiding more packet loss and delay. Dynamically balance network traffic, by dynamically adjusting the window size, flexibly adjust the transmission rate according to the real-time network status, not only relieve the immediate network pressure, but also allow the transmission capacity to be quickly restored when the network condition improves, and keep the network throughput in the optimal state. Improve network efficiency and stability. The strategy of reducing the window size may cause a decrease in network throughput in the short term, but in the long run, it helps avoid excessive network congestion and reduces the extra burden caused by frequent packet loss and retransmission. Ultimately, it will make the network run smoother and more stable.

[0140] Extending the timeout retransmission interval by 0.2n times is to: adapt to changes in network delay. When the network is congested, it is usually accompanied by an increase in delay. By extending the timeout retransmission time, you can adapt to the increase in delay and avoid unnecessary retransmissions when the data packet is actually still in transit. This strategy directly responds to changes in network delay, reduces retransmissions caused by misjudged delays, and thus reduces network load. Optimizing data transmission and network load, extending the retransmission interval helps reduce the additional network load caused by retransmissions during periods of network congestion. This method optimizes the data flow of the entire network by reducing repeated data transmission caused by congestion. Reducing unnecessary retransmissions can effectively utilize network resources and improve the overall data transmission efficiency of the network. Maintaining the overall performance of the network, in the long run, setting the retransmission interval reasonably helps maintain network performance, while avoiding the deterioration of congestion, ensuring reliable data transmission, and helping the network face unstable or unpredictable network conditions.

[0141] By intelligently adjusting the sending window and retransmission strategy, the use of network resources is optimized, the stability and reliability of the network are enhanced, and the invention is particularly suitable for the environment of the invention, and service interruptions and delays caused by network problems are reduced.

[0142] At present, the traditional stop-and-wait protocol requires the trust substation to stop after sending each frame and wait for the confirmation that the trust main station has correctly received it before continuing to send the next frame. Compared with the traditional stop-and-wait protocol, the communication parties based on flow control technology dynamically negotiate the sliding window size. After all data is sent up, the window size can be dynamically adjusted according to the network status, and it can be adjusted for unconfirmed data, which can effectively improve channel utilization.

[0143] The subsequent bit flag in the download message is 0, indicating that the transmission of ASDU107 is completed;

[0144] The starting transmission position in the download message: the offset after the file is divided into blocks according to the file size;

[0145] The message transmission length of the traditional communication establishment method has an upper limit, which is generally x bytes. When the general byte upper limit is exceeded, the message will be parsed incorrectly. The present method can be used for communication transmission to dynamically negotiate between the communicating parties according to the window size size1 set in the transmission flag of the ASDU105 message and the acceptable size size2 filled in the transmission flag of the reply ASDU106 message, so as to avoid exceeding the transmission byte upper limit as much as possible.

[0146] The difference between this step and conventional ledger configuration is that the maintenance application data in the OMS system and the work ticket data of the power grid management platform are combined to configure the ledger for the newly added node to avoid manual entry of ledger information.

[0147] The above is a preferred solution for the message for downloading the ledger configuration file. By agreeing on a message method for the ledger configuration file: / CONF / IEDList.xml, the configuration file can be downloaded from the main station to the Baoxin substation.

[0148] Ledger configuration file: / CONF / IEDList.xml.

[0149] Master station: ASDU200 (to communicate with the device below). The configuration contents are shown in Table 1.

[0150] Table 1 Schematic diagram of the message mode of the master station's communication message to the lower station:

[0151]

[0152] S5: Parse the message at the Baoxin master station;

[0153] The parsing of the message at the Baoxin main station includes parsing the message at the Baoxin main station, removing the TCP message header and tail, and obtaining the original data message of the newly added node, wherein the original data message refers to the original data of the protection device that has not been configured, which can reflect the actual situation of the protection device data and avoid data distortion caused by artificial misconfiguration at the plant end.

[0154] The difference between this step and the traditional information security substation data transmission is that after receiving the data from the plant side, the original message and data of the plant side protection device can be obtained by removing the header and tail of the TCP message, which effectively avoids problems such as data distortion and bit errors at the plant side. The plant side does not need to configure an information security substation, thus avoiding the problem of data transmission errors caused by manual configuration errors.

[0155] S6: Establish a protocol library at the Baoxin main station to perform protocol conversion and data analysis on the original messages sent by the newly added nodes.

[0156] The master station protocol library includes protocols of all stages of all relay protection manufacturers, such as NARI 103 protocol, Sifang 103 protocol, 61850 protocol, etc. The protocol is parsed at the master station, and the existing protocol conversion technology is used to classify, model and uniformly configure the data of the relay protection device.

[0157] The difference between this step and the conventional protocol conversion method is that the conventional protocol conversion is performed through the security substation at the plant station end, while this method establishes a protocol library at the master station end, fully utilizes the master station hardware resources, avoids resource waste, reduces the hardware configuration standards of the security substation at the plant station end, saves investment, and realizes the original transmission of the protection device message.

[0158] The maintenance-free methods for relay protection fault information substations in daily operation include:

[0159] (1) Equipment status monitoring: Use temperature sensors and external substation equipment to monitor the operating status and software health of substation hardware (such as protection management machines, access devices, switches, etc.) in real time, and upload this status information to the main station through the communication interface.

[0160] Equipment status monitoring includes: collecting the temperature of the Baoxin substation through an existing temperature sensor, judging the operating status of the Baoxin substation through the on / off status of the Baoxin substation, and real-time detection and analysis of the comprehensive operating status of hardware equipment such as the protection management machine, access device, and switch. When the communication of the Baoxin substation is interrupted, the Baoxin substation is judged to be abnormal. Combined with the temperature collected by the external substation, when the temperature is higher than the allowable value of the normal operating temperature of the Baoxin substation, it is judged that the hardware of the Baoxin substation is abnormal. When the temperature is lower than the allowable value of the normal operating temperature of the Baoxin substation, it is judged that the software of the Baoxin substation is abnormal.

[0161] Real-time monitoring mechanism: Self-diagnosis and analysis functions continuously collect status data of the above hardware and software to ensure rapid identification of potential failures or performance bottlenecks.

[0162] Communication interface and information transmission: An existing external substation uses a standardized communication protocol (such as IEC61850, DL / T860, etc.) to encrypt and package the real-time hardware and software status information through a dedicated data interface, and upload it to the Baoxin main station safely and reliably.

[0163] Processing and display at the master station: After receiving the status data sent by the substation, the Baoxin master station parses and integrates it, forms a detailed equipment file in the background database, and displays the hardware and software operating status of each substation in a visual way on the operation and maintenance platform interface, providing a basis for operation and maintenance decisions.

[0164] (2) Remote access and control: Establish an independent operation and maintenance port at the Baoxin substation, and support the establishment of operation and maintenance channels with multiple main stations. The main station can download and upload files, issue configuration validation commands, execute network packet capture, call logs, etc. through the operation and maintenance channel.

[0165] The operation and maintenance personnel of the Baoxin main station can remotely log in to the Baoxin substation through the secondary intelligent operation and maintenance platform to perform configuration management, software version updates, troubleshooting and other operations. At the same time, a remote access mechanism based on two-factor authentication is established, including user identity authentication and device authorization verification. When users log in through the secondary intelligent operation and maintenance platform, they need to enter their user name and password and perform secondary verification through dynamic passwords or biometrics. Only legitimate users who have passed the verification can obtain access rights to the designated Baoxin substation.

[0166] (3) Remote data backup: Perform remote data backup regularly or on demand to ensure that the normal operation of the substation system can be quickly restored when necessary.

[0167] The remote data backup of the Baoxin substation includes: periodically triggered remote backup and event-triggered remote backup. Periodically triggered remote backup means that the Baoxin substation collects and processes various types of protection information in real time, sets a period for remote data backup, and encrypts the data of the Baoxin substation according to the preset period and sends it to the Baoxin main station through the dispatching data network. Event-triggered remote backup means that when the plant-side accident trips, the Baoxin substation calls the data of the corresponding accident tripping equipment and sends it to the storage of the Baoxin main station to form a data backup set.

[0168] Example 2

[0169] Reference Figure 2 , as an embodiment of the present invention, provides a configuration-free and maintenance-free system for a relay protection fault information substation, comprising:

[0170] Data collection module, node marking module, node communication module, ledger configuration module, message parsing module and protocol parsing module;

[0171] The data acquisition module is used to obtain all network node information through the Baoxin master station and build a network topology map;

[0172] The node marking module is used to mark the newly added nodes in the network topology diagram;

[0173] The node communication module is used to establish communication with the marked network node. The marked network node sends all the original data of the marked network node to the safety zone I through the scheduling data network after adding the TCP message header and tail.

[0174] The ledger configuration module is used to configure the ledger of the plant-side Baoxin substation and download the configuration file data to the Baoxin substation;

[0175] The message parsing module is used to parse the message at the Baoxin master station;

[0176] The protocol parsing module is used to establish a protocol library in the Baoxin main station, and perform protocol conversion and data parsing on the original messages sent by the newly added nodes.

[0177] Example 3

[0178] An embodiment of the present invention is different from the first two embodiments in that:

[0179] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0180] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0181] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0182] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0183] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A configuration-free and maintenance-free method for a relay protection fault information substation, characterized in that: include: Obtain all network node information through the Baoxin main station and build a network topology map; Mark the newly added nodes in the network topology diagram; Establish communication with the marked network node, and send all the original data of the marked network node to the safe I zone through the dispatching data network; Configure the ledger of the Baoxin substation at the plant end and download the configuration file data to the Baoxin substation; Parse the message at the Baoxin master station; Establish a protocol library at the Baoxin master station to perform protocol conversion and data analysis on the original messages sent by the newly added nodes; The acquisition of all network node information includes automatically discovering new network nodes, aggregating all network nodes and their neighbor information of the information security system through a message passing mechanism, and updating the feature representation of the node, using the feature of each known node to represent the information of its adjacent nodes; The construction of the network topology diagram includes constructing a node feature matrix H (l) , represents the initial characteristics of each node in the security system, l represents the number of layers, the station-side interval layer is the 0th layer, the station-side security substation is the 1st layer, and the security master station is the 2nd layer, l≤2 and is an integer; Establish an adjacency matrix A, and use the adjacency matrix to represent the connection relationship between nodes in the graph; Aggregate the information of neighbor nodes through the aggregation graph convolution layer and update the node features, which is expressed as, Among them, I N represents the N-dimensional identity matrix, A represents the adjacency matrix, Represents the adjacency matrix A and the identity matrix I N of and, yes The degree matrix of for Element-wise application, i is the horizontal element in the matrix, j is the vertical element in the matrix, H (l) is the feature matrix of the l-th layer node, W (l) represents the weight matrix of the lth layer, N represents the dimension of the matrix, D represents the standard value of the adjacency matrix A, and H (0) =X,H (2) =Z, X represents the basic features of the nodes of the relay protection device at the 0th layer, Z represents the features received by the second layer protection master station after the first layer, and ReLU is the activation function; By H (l+1) Represent the activation matrix of the newly added nodes and output the information of the newly added nodes.

2. The configuration-free and maintenance-free method for relay protection fault information substation according to claim 1, characterized in that: The marking of the newly added nodes in the network topology diagram includes collecting and determining the information of the newly added nodes to be marked, and distinguishing them from the original network nodes by means of color coding and text labels; The information of the newly added node is expressed as: Among them, X represents the basic features of the nodes of the relay protection device at the 0th layer, Z represents the features received by the second layer protection signal master station after the first layer, Y represents the label of the newly added node, and softmax and ReLU represent activation functions respectively; The color coding includes marking the newly added nodes in red and the original nodes in green; the text label mainly includes parsing the IP of the newly added node, confirming the network path of the plant to which it belongs by looking up the information of the plant-side Baoxin substation routing protocol, and determining the plant to which it belongs by looking up the corresponding records in the routing table, and labeling the newly added network node with the corresponding plant name.

3. The configuration-free and maintenance-free method for relay protection fault information substation according to claim 2, characterized in that: The establishing of communication with the marked network node includes adopting the TCP message format, adding a TCP message header and a message tail; The TCP message includes a preparatory message segment and a data message segment. The preparatory message segment is a parameter used in the TCP message header to establish communication transmission between the master station, the slave station and the marked node. The target IP address in the TCP message is represented by dotted decimal, and each 8 bits is divided into a segment, with a total of 4 segments. Each byte in the message represents a segment, the lowest byte represents 25-32 bits, and the highest byte represents 1-8 bits. When it is necessary to record messages of all target IP addresses, the target IP is filled with 0; In the target port number, the low bit is in front and the high bit is in the back. When it is necessary to record the messages of all target port numbers, the target port number is filled with 0; The TCP message header includes the source port number, destination port number, sequence number, confirmation number, receive window, header field, and option field. The message length is specified while establishing communication. The data segment message contains the direct data interaction between the marked new node and the security master station. The data segment message contains all the data information of the protection device of the marked new node. The data is added to the TCP message header and then sent in its original version. The TCP message header is applicable to all relay protection protocols.

4. The configuration-free and maintenance-free method for relay protection fault information substation according to claim 3, characterized in that: The configuration of the ledger of the plant-side security substation includes configuring the port number and IP information of the newly added node at the plant-side according to the source port number, destination port number, and IP address option field information in the TCP preparation segment message, configuring the interval name, protection model, and protection type information for the newly added node in combination with the work ticket information and the maintenance application data information in the OMS system, and finally configuring the security substation ledger at the security master station; The downloading of the configuration file data to the Baoxin substation is to adopt the dynamic negotiation of the sliding window size between the two communicating parties based on the flow control technology. During the TCP connection establishment phase, the Baoxin main station and the Baoxin substation negotiate the window size, and the Baoxin main station reserves a data buffer area; The main station of the security information system fills in the window size size1 in the transmission mark of the ASDU105 message, and the sub-station of the security information system fills in the acceptable size size2 in the transmission mark of the reply ASDU106 message, but it must not exceed the size given by the main station of the security information system; the main station of the security information system sends size2 ASDU107 messages at a time, and waits for the confirmation of the ASDU108 message from the sub-station of the security information system; Based on the negotiation results, the trustworthy substation sends a data byte stream that meets the window size, applies the Markov decision process model to obtain the congestion degree n, and determines whether a congestion state occurs. If it is determined to be a congestion state, the sending window is reduced to 0.1×(10-n) times the original size, where n is the congestion degree of the data, and the time interval for timeout retransmission is expanded by 0.2n times.

5. The configuration-free and maintenance-free method for relay protection fault information substation according to claim 4, characterized in that: Parsing the message at the security main station includes parsing the message at the security main station, removing the TCP message header and tail, and obtaining the original data message of the newly added node, wherein the original data message refers to the original data of the protection device that has not been configured; The protocol library includes parsing the protocols of all relay protection manufacturers at each stage at the master station, using protocol conversion technology to classify, model and uniformly configure the data of relay protection devices.

6. A system using the configuration-free and maintenance-free method for relay protection fault information substation as claimed in any one of claims 1 to 5, characterized in that: include: Data collection module, node marking module, node communication module, ledger configuration module, message parsing module and protocol parsing module; The data acquisition module is used to obtain all network node information through the Baoxin master station and build a network topology map; The node marking module is used to mark the newly added nodes in the network topology diagram; The node communication module is used to establish communication with the marked network node, and the marked network node sends all data originals of the marked network node to the security zone I through the scheduling data network after adding the TCP message header and tail; The ledger configuration module is used to configure the ledger of the plant-side trust-protecting substation and download the configuration file data to the trust-protecting substation; The message parsing module is used to parse the message at the security main station; The protocol parsing module is used to establish a protocol library in the Baoxin main station, and perform protocol conversion and data parsing on the original message sent by the newly added node.

7. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method for free configuration and maintenance of a relay protection fault information substation described in any one of claims 1 to 5 are implemented.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for free configuration and maintenance of a relay protection fault information substation described in any one of claims 1 to 5 are implemented.

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