Relay protection fault information substation configuration data remote maintenance method

Abstract

The invention discloses a relay protection fault information substation configuration data remote maintenance method, and belongs to the technical field of substation data transmission management. According to the method, parameter data are collected and analyzed, a communication link analysis model is established, a relation curve of the size of data blocks transmitted in a segmented mode, the number of times of transmission of the segmented data blocks and the transmission quality of the data blocks is fitted, and the number of times of transmission of the data blocks is predicted according to the size of the data blocks and the transmission quality of the data blocks. Establishing a communication time analysis model, fitting a relation curve of the size of the data blocks transmitted in a segmentation manner, the transmission duration of the segmented data blocks and the transmission quality of the data blocks, predicting the transmission duration of the data blocks according to the size of the data blocks and the transmission quality of the data blocks, and analyzing the collected parameter data to obtain a communication time analysis result; the size of the data blocks transmitted in a segmented mode is automatically adjusted in combination with the analysis model, so that all the data blocks are transmitted within the shortest time, the data transmission efficiency is improved, and the occurrence risk of safety accidents of the transformer substation is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of substation data transmission management, in particular to a remote maintenance method for relay protection fault information substation configuration data. Background Art

[0002] Relay protection fault information configuration data refers to a data set used to set and adjust the parameters and settings of relay protection devices and their related communication equipment in the power system; this data is crucial to ensuring the stable operation, fault detection, fault isolation and power restoration of the power system. When a fault occurs in the power system, it can quickly and accurately identify the fault type and location, and take corresponding protection actions to ensure the safe and stable operation of the power system.

[0003] In the process of transmitting the relay protection fault information configuration data, the data needs to be transmitted in blocks. However, when the data communication quality is poor, larger data blocks take longer to transmit, which can easily lead to network congestion, while smaller data blocks may increase the transmission overhead of each data block because each data block requires additional header information and possible confirmation mechanisms. In the prior art, the data communication between the Baoxin main station and the Baoxin substation is easily affected by external interference, and it is difficult for the system to automatically divide the transmission size of the data block according to the network environment, resulting in low data transmission efficiency and increased security risks. Summary of the invention

[0004] The object of the present invention is to provide a remote maintenance method for relay protection fault information substation configuration data to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a remote maintenance method for relay protection fault information substation configuration data, the method comprising the following steps:

[0006] S10. When a device failure occurs in the Baoxin substation, the common key configuration information about the relay protection equipment of the Baoxin substation is constructed in the Baoxin master station to form a configuration file; different tags are used to define different data blocks in the configuration file according to the content of the configuration file;

[0007] S20, sorting the priority of data block transmission according to the device failure type, finding the data blocks corresponding to the contents of different configuration files through the tags, and sending the data blocks to the trust-protecting substation in descending order of priority;

[0008] S30, collecting parameter data during the data block transmission process between the Baoxin master station and the Baoxin substation; the parameter data includes the size of the data block for segmented transmission, the number of transmissions of the corresponding segmented data blocks, the data block transmission quality and the data block transmission duration; and storing the collected parameter data as historical data in a database;

[0009] S40, retrieve historical parameter data from the database for analysis; establish a communication link analysis model, fit the relationship curve between the size of the data block for segmented transmission, the number of transmissions of the segmented data block and the quality of the data block transmission; establish a communication time analysis model, fit the relationship curve between the size of the data block for segmented transmission, the transmission duration of the segmented data block and the quality of the data block transmission; determine the fitting parameters in the communication link analysis model and the communication time analysis model respectively according to the retrieved and analyzed historical parameter data;

[0010] S50. Analyze the currently collected parameter data to determine the current data block transmission quality and the current data block size required for transmission; use the RNN algorithm to predict the data block transmission quality at the next moment based on the current data block transmission quality; automatically adjust the size of the divided data blocks based on the predicted data block transmission quality at the next moment, the current data block size required for transmission, the established communication link analysis model and the communication time analysis model, and repeat steps S20-S50 until all files are transmitted to the Baoxin substation.

[0011] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: by establishing a communication link analysis model, the number of data block transmissions is predicted according to the data block size and the data block transmission quality; by establishing a communication time analysis model, the data block transmission duration is predicted according to the data block size and the data block transmission quality; the collected parameter data is analyzed, and the size of the data blocks for segmented transmission is automatically adjusted in combination with the analysis model, so that all data blocks are transmitted in the shortest time, thereby improving data transmission efficiency and timeliness, and thus reducing the risk of safety accidents in substations. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the steps of a remote maintenance method for relay protection fault information substation configuration data of the present invention. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] See also Figure 1 , the present invention provides a technical solution:

[0015] See also Figure 1In this embodiment: a remote maintenance method for relay protection fault information substation configuration data is provided, in the Baoxin master station, the general key configuration information of the Baoxin substation is constructed in the XML file format, and the file is sent to the Baoxin substation through the file transfer protocol. The Baoxin substation parses the general key configuration information file to form its own configuration data. The method includes the following steps:

[0016] S10. When a device failure occurs in the Baoxin substation, common key configuration information about the relay protection equipment of the Baoxin substation is constructed in the Baoxin main station to form a configuration file; according to the content of the configuration file, different tags are used to define different data blocks in the configuration file.

[0017] It should be noted that the Baoxin substation refers to the automation system in the substation, which is responsible for processing and monitoring various equipment in the substation, such as circuit breakers, disconnectors, transformers, relay protection devices, etc.; the Baoxin main station refers to the control center of the power system, which is responsible for monitoring and managing the operating status of multiple Baoxin substations.

[0018] It should be noted that the common key configuration information includes but is not limited to protection settings, time parameters, logic settings, and fault recording settings; the content of the configuration file represents the common key configuration information of different relay protection devices in the Baoxin substation; the configuration file contains different data blocks; the configuration file is divided into different data blocks through the content of the configuration file, and distinguished by labels, so that the system or application can identify and parse these different data blocks, determine the corresponding fault risks through the content of the configuration file, prioritize different data blocks, and give priority to data blocks with higher priority levels.

[0019] S20. Sort the priority of data block transmission according to the device failure type, find the data blocks corresponding to the contents of different configuration files through the tags, and send the data blocks to the trust-protecting substation in descending order of priority.

[0020] Furthermore, in order to reduce the complexity of the processing logic, when a data block with a higher priority level is transmitted first, the data block initialization segmentation size K0 is determined; the Baoxin substation receives the segmented transmitted data block and verifies it to determine whether the segmented transmitted data block needs to be retransmitted: if retransmission is not required, the transmission is completed, and the next segmented transmitted data block continues to be transmitted; if retransmission is required, the Baoxin main station retransmits the current segmented transmitted data block; wherein, when the transmission of the segmented transmitted data block is completed, the corresponding number of segmented data block transmissions is recorded; the data block transmission duration is represented by the transmission duration of the segmented data block at the corresponding number of times when the transmission from the Baoxin main station to the Baoxin substation is completed.

[0021] S30. Collect parameter data during data block transmission between the Baoxin main station and the Baoxin substation; the parameter data includes the size of the data block for segmented transmission, the number of corresponding segmented data block transmissions, the data block transmission quality and the data block transmission duration; and store the collected parameter data as historical data in a database.

[0022] Furthermore, by measuring the signal-to-noise ratio of the trustworthy substation, the transmission quality of the data blocks of the segmented transmission is monitored, and the calculated signal-to-noise ratio value is used as an indicator value reflecting the transmission quality of the data blocks of the segmented transmission.

[0023] In this embodiment, when sending a data block for segmented transmission, the Baoxin main station will calculate and append a check value. After receiving the data block for segmented transmission, the Baoxin substation will recalculate the check value and compare it with the value provided by the Baoxin main station. When the check value matches, there is no need to retransmit the data block for segmented transmission. At this time, the Baoxin substation sends an ACK back to the Baoxin main station, the transmission is completed, and the next segmented transmission data block continues to be transmitted. When the check value does not match, the segmented transmission data block needs to be retransmitted. At this time, the Baoxin substation sends a NACK back to the Baoxin main station, and the Baoxin main station retransmits the current segmented transmission data block. According to the historical parameter data, the maximum time threshold T0 for each transmission of the segmented transmission data block is determined. When the transmission time of each segmented transmission data block is greater than the maximum time threshold, that is, within T0, the Baoxin substation does not receive the segmented transmission data block. At this time, the Baoxin substation sends a NACK back to the Baoxin main station, and the Baoxin main station retransmits the current segmented transmission data block.

[0024] In this embodiment, a signal-to-noise ratio tester is used to directly measure the signal-to-noise ratio and display the result, and the signal-to-noise ratio value corresponding to the displayed result is used as an indicator value reflecting the transmission quality of the data blocks of segmented transmission; when a relay device failure occurs in the trust-protecting substation, electromagnetic and other environmental factors will interfere with the communication quality of the trust-protecting substation, and the signal-to-noise ratio of the trust-protecting substation is measured to predict the communication quality of the trust-protecting substation, and the size of the data blocks of segmented transmission is adjusted according to the prediction result; wherein, in the process of transmitting different data blocks, the data blocks of segmented transmission are accumulated and then spliced; the data block splicing time is proportional to the number of segmented data blocks; the more the number of segmented data blocks, the longer the data block splicing time.

[0025] S40. Retrieve historical parameter data from the database for analysis; establish a communication link analysis model to fit the relationship curve between the size of the data block for segmented transmission, the number of transmissions of the segmented data block, and the quality of the data block transmission; establish a communication time analysis model to fit the relationship curve between the size of the data block for segmented transmission, the transmission duration of the segmented data block, and the quality of the data block transmission; determine the fitting parameters in the communication link analysis model and the communication time analysis model respectively according to the retrieved and analyzed historical parameter data.

[0026] Specifically, the method steps are:

[0027] The historical parameter data is retrieved from the database for analysis to obtain the corresponding sets of different data block transmission times, data block transmission qualities, and data block transmission durations H1, H2, ..., H3 under different segmented transmission data block sizes. n ;in, H ij =(y ij ,x ij ,T ij );

[0028] Where n represents the number of data block sizes for segmented transmission; H i represents the set of different data block transmission times, data block transmission qualities and data block transmission durations corresponding to the data block size of the i-th segmented transmission; i = 1, 2, ..., n; H i1 , H i2 ,..., represents the number of data block transmissions, data block transmission quality and data block transmission duration corresponding to the data block size of the i-th segmented transmission; m i H represents the amount of historical parameter data retrieved from the database for analysis under the data block size of the i-th segmentation transmission; ij represents the number of data block transmissions, data block transmission quality and data block transmission duration of the jth segmented data block under the data block size of the i-th segmented transmission; y ij represents the number of data block transmissions of the jth segmented data block under the data block size of the i-th segmented transmission; x ij represents the data block transmission quality of the jth segmented data block under the data block size of the i-th segmented transmission; T ij represents the data block transmission duration of the jth segmented data block under the data block size of the i-th segmented transmission; j=1, 2, ..., m i ; h1, h2, ..., h n Indicates H1, H2, ..., H n The data block size of different types of segmented transmission;

[0029] A communication link analysis model is established. According to the data block size h of segmented transmission, the number of data block transmissions y and the data block transmission quality x, h and x are used as independent variables and y is used as the dependent variable to fit the relationship curve between the data block size of segmented transmission, the number of data block transmissions and the data block transmission quality:

[0030]

[0031] Wherein, a and b represent the fitting parameters in the communication link analysis model, and both a and b are constants;

[0032] A communication time analysis model is established. According to the data block size h of segmented transmission, the data block transmission quality x and the data block transmission time T, h and x are used as independent variables and T is used as the dependent variable to fit the relationship curve between the data block size of segmented transmission, the data block transmission time and the data block transmission quality:

[0033]

[0034] Wherein, c and d represent the fitting parameters in the communication time analysis model, and both c and d are constants;

[0035] The historical parameter data retrieved and analyzed in the set H are respectively substituted into the relationship curves of the communication link analysis model and the communication time analysis model for training, and the values ​​of a, b, c and d are respectively determined.

[0036] It can be understood that the different data block transmission times, data block transmission quality and data block transmission time corresponding to the different segmented transmission data block sizes in the set H are respectively substituted into the relationship curves of the communication link analysis model and the communication time analysis model, h i and x ij The training parameter values ​​corresponding to the independent variables h and x respectively; y ij and T ij The training parameter values ​​corresponding to the dependent variables y and T respectively; where h i represents the data block size of the i-th segmentation transmission; the relationship curve in the corresponding model is determined according to the shortest Euclidean distance and the substituted training parameter value. For example, in this implementation, in the communication link analysis model, h i and different x ij ,y ij Substitute into In the above method, different values ​​of a and b are obtained, that is, different relationship curves. According to these different relationship curves, a curve is determined with the shortest sum of Euclidean distances to these different relationship curves, so that the determined curve is used as the final fitting relationship curve, and the values ​​of a and b obtained by the final training are obtained according to the relationship curve.

[0037] It should be noted that the historical parameter data in the database is a continuously updated process, and due to the continuous updating of the historical parameter data, the corresponding training parameters in the set H are also constantly changing, so the obtained values ​​of a, b, c and d are also constantly changing, so as to fit the actual data block transmission scenario.

[0038] It should be noted that, by establishing a communication link analysis model, the number of data block transmissions is predicted according to the data block size and the data block transmission quality, wherein the larger the data block size h of the segmented transmission, the worse the data block transmission quality x, that is, the smaller x is, the more data block transmission times y are; by establishing a communication time analysis model, the data block transmission duration is predicted according to the data block size and the data block transmission quality, wherein the larger the data block size h of the segmented transmission, the worse the data block transmission quality x is, that is, the smaller x is, the longer the data block transmission duration T is; the fitting relationship curve is determined based on the historical parameter data, thereby providing data support for determining the data block size of the segmented transmission, and improving the accuracy of the system data analysis.

[0039] S50. Analyze the currently collected parameter data to determine the current data block transmission quality and the current data block size required for transmission; use the RNN algorithm to predict the data block transmission quality at the next moment based on the current data block transmission quality; automatically adjust the size of the divided data blocks based on the predicted data block transmission quality at the next moment, the current data block size required for transmission, the established communication link analysis model and the communication time analysis model, and repeat steps S20-S50 until all files are transmitted to the Baoxin substation.

[0040] Specifically, the method steps are:

[0041] Analyze the currently collected parameter data to determine the data block size h required to be transmitted at the current time t t,z and data block transfer quality x t ; According to the data block transmission quality x at the current time t t , using the RNN algorithm to predict the data block transmission quality x at time t+1 t+1 ; Wherein, t represents the timestamp;

[0042] It should be noted that according to the data block transmission quality x at the current time t t , using the RNN algorithm to predict the data block transmission quality x at time t+1 t+1 In the method steps, the change of the data block transmission quality in the historical parameter data over time t is divided into a training set and a verification set, an RNN neural network model is established, the RNN neural network model is trained using the training set, the training result is verified using the verification set, and the model parameters are adjusted, so that the RNN neural network model can predict the data block transmission quality at the next moment;

[0043] According to x t+1 、h t,z , establish the communication link analysis model and communication time analysis model, and determine the data block size h for segmented transmission at time t+1 t+1 , so that the conditional formula is satisfied:

[0044]

[0045] Where T0 represents the maximum time threshold for each transmission of the segmented data block; h0 represents the size of the metadata added to the segmented data block; T t,z Indicates that h t,z The time required to transfer all data blocks of the same size;

[0046] It should be noted that due to the influence of the network communication environment, when the data communication quality is poor and the data needs to be retransmitted, the time of the retransmission process is often greater than the maximum time threshold T0. Through the communication link analysis model and the communication time analysis model, the retransmission time of the data blocks in the segmented transmission and the time of the last successful transmission are predicted under different data block sizes in the segmented transmission, and the time required to transmit all the data blocks currently required to be transmitted is determined, thereby determining the corresponding data block size for the segmented transmission, thereby improving the efficiency and timeliness of data transmission; wherein, when the data blocks are segmented and transmitted, the segmented data blocks usually need to add some additional information, namely metadata, which is used to identify the segmented transmitted data blocks, so that the trust-guaranteed substation can reorganize the segmented transmitted data blocks in the correct order.

[0047] According to the calculated h t+1 , automatically adjust the size of the data blocks for segmented transmission until all files are transferred to the Baoxin substation.

[0048] In this embodiment, at a certain time t, the transmitted data block is the fault information configuration data of the circuit breaker. t+1 and h0, determine the data block size of the segmented transmission to be h t+1 -h0, the data blocks to be transmitted at the current time t are arranged according to h t+1 -h0 size for split transmission, repeat steps S20-S50 until all files are transmitted to the Baoxin sub-station.

[0049] It should be noted that when the data blocks with corresponding labels are transmitted, the Baoxin substation splices the data blocks with corresponding labels; when all the data blocks with different labels are transmitted, the Baoxin substation splices the data blocks with different labels again to obtain the transmitted file, and at this time all the files are transmitted.

[0050] Furthermore, a human-computer interaction platform is provided to digitally display the predicted data block transmission quality at the next moment, the calculated data block size for segmented transmission at the next moment, and the data block transmission duration; when all files are transmitted to the Baoxin substation, the end of file transmission is displayed.

[0051] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A remote maintenance method for relay protection fault information substation configuration data, characterized in that: The method comprises the following steps: S10. When a device failure occurs in the Baoxin substation, common key configuration information about the relay protection equipment of the Baoxin substation is constructed in the Baoxin master station to form a configuration file; different tags are used to define different data blocks in the configuration file according to the content of the configuration file; S20, sorting the priority of data block transmission according to the device failure type, finding the data blocks corresponding to the contents of different configuration files through the tags, and sending the data blocks to the trust-protecting substation in descending order of priority; S30, collecting parameter data during the data block transmission process between the Baoxin master station and the Baoxin substation; the parameter data includes the size of the data block for segmented transmission, the number of transmissions of the corresponding segmented data blocks, the quality of the data block transmission and the duration of the data block transmission; and storing the collected parameter data as historical data in a database; S40, retrieve historical parameter data from the database for analysis; establish a communication link analysis model, fit the relationship curve between the size of the data block for segmented transmission, the number of transmissions of the segmented data block and the quality of the data block transmission; establish a communication time analysis model, fit the relationship curve between the size of the data block for segmented transmission, the transmission duration of the segmented data block and the quality of the data block transmission; determine the fitting parameters in the communication link analysis model and the communication time analysis model respectively according to the retrieved and analyzed historical parameter data; S50. Analyze the currently collected parameter data to determine the current data block transmission quality and the current data block size required for transmission; use the RNN algorithm to predict the data block transmission quality at the next moment based on the current data block transmission quality; automatically adjust the size of the divided data blocks based on the predicted data block transmission quality at the next moment, the current data block size required for transmission, the established communication link analysis model and the communication time analysis model, and repeat steps S20-S50 until all files are transmitted to the Baoxin substation.

2. A remote maintenance method for relay protection fault information substation configuration data according to claim 1, characterized in that: Determine the data block initialization segmentation size K0; the Baoxin substation receives the segmented transmitted data block and verifies it to determine whether the segmented transmitted data block needs to be retransmitted: if retransmission is not required, the transmission is completed, and the next segmented transmitted data block continues to be transmitted; if retransmission is required, the Baoxin main station retransmits the current segmented transmitted data block; wherein, when the transmission of the segmented transmitted data block is completed, the corresponding number of segmented data block transmissions is recorded; the data block transmission duration is represented by the transmission duration of the segmented data block at the corresponding number of times when the transmission from the Baoxin main station to the Baoxin substation is completed.

3. A remote maintenance method for relay protection fault information substation configuration data according to claim 2, characterized in that: By measuring the signal-to-noise ratio of the trustworthy substation, the transmission quality of the data blocks of the segmented transmission is monitored, and the calculated signal-to-noise ratio value is used as an indicator value reflecting the transmission quality of the data blocks of the segmented transmission; Among them, when the data block with the corresponding label is transmitted, the Baoxin substation splices the data block with the corresponding label; when all the data blocks with different labels are transmitted, the Baoxin substation splices the data blocks with different labels again to obtain the transmitted file, and the file is now fully transmitted.

4. A remote maintenance method for relay protection fault information substation configuration data according to claim 1, characterized in that: The method steps of step S20 are: S201, retrieve historical parameter data from the database for analysis, and obtain different data block transmission times, data block transmission qualities, and data block transmission duration sets H1, H2, ..., H3 corresponding to different data block sizes for segmentation transmission. n ;in, H ij =(y ij ,x ij ,T ij ); Where n represents the number of data block sizes for segmented transmission; H i represents a set of different data block transmission times, data block transmission qualities, and data block transmission durations corresponding to the data block size of the i-th segmented transmission; i=1, 2, ..., n; represents the number of data block transmissions, data block transmission quality and data block transmission duration corresponding to the data block size of the i-th segmented transmission; m i H represents the amount of historical parameter data retrieved from the database for analysis under the data block size of the i-th segmentation transmission; ij represents the number of data block transmissions, data block transmission quality and data block transmission duration of the jth segmented data block under the data block size of the i-th segmented transmission; y ij represents the number of data block transmissions of the jth segmented data block under the data block size of the i-th segmented transmission; x ij represents the data block transmission quality of the jth segmented data block under the data block size of the i-th segmented transmission; T ij represents the data block transmission duration of the jth segmented data block under the data block size of the i-th segmented transmission; j=1, 2, ..., m i ; h1, h2, ..., h n Indicates H1, H2, ..., H n The data block size of different types of segmented transmission; S202, establish a communication link analysis model, according to the data block size h of the segmented transmission, the number of data block transmissions y and the data block transmission quality x, with h and x as independent variables and y as the dependent variable, fit the relationship curve between the data block size of the segmented transmission, the number of data block transmissions and the data block transmission quality: Wherein, a and b represent the fitting parameters in the communication link analysis model, and both a and b are constants; S203, establish a communication time analysis model, according to the data block size h of the segmented transmission, the data block transmission quality x and the data block transmission time T, with h and x as independent variables and T as the dependent variable, fit the relationship curve between the data block size of the segmented transmission, the data block transmission time and the data block transmission quality: Wherein, c and d represent the fitting parameters in the communication time analysis model, and both c and d are constants; S204, substituting the historical parameter data retrieved and analyzed in set H into the relationship curves of step S302 and step S303 for training, and determining the values ​​of a, b, c and d respectively.

5. A remote maintenance method for relay protection fault information substation configuration data according to claim 4, characterized in that: The method steps of step S30 are: S301, analyzing the currently collected parameter data to determine the data block size h required to be transmitted at the current time t t,z and data block transfer quality x t ; According to the data block transmission quality x at the current time t t , using the RNN algorithm to predict the data block transmission quality x at time t+1 t+1 ; Wherein, t represents the timestamp; S302, according to x t+1 、h t,z , establish the communication link analysis model and communication time analysis model, and determine the data block size h for segmented transmission at time t+1 t+1 , so that the conditional formula is satisfied: Where T0 represents the maximum time threshold for each transmission of the split data block; h0 represents the size of the metadata added to the split data block; T t,z Indicates that h t,z The time required to transfer all data blocks of the same size; S303, according to the calculated h t+1 , automatically adjust the size of the data blocks for segmented transmission until all files are transferred to the Baoxin substation.

6. A remote maintenance method for relay protection fault information substation configuration data according to claim 5, characterized in that: Provide a human-computer interaction platform to digitally display the predicted data block transmission quality at the next moment, the calculated data block size for split transmission at the next moment, and the data block transmission duration; When all files are transferred to the Baoxin sub-station, the file transfer is completed.

Images