High-voltage circuit breaker data safety transmission method and system based on optical fiber communication

Abstract

The invention discloses a high-voltage circuit breaker data safety transmission method and system based on optical fiber communication, and relates to the technical field of circuit breaker data transmission, and the method comprises the steps: determining a target circuit, and obtaining an equipment structure; arranging a sensor group, and acquiring data of the high-voltage circuit breaker and the environment by the sensor group to obtain monitoring parameters; performing redundancy coding on the monitoring parameters to obtain a plurality of groups of data packets, and judging the data packets to obtain a judgment result; sending the normal data packet to a data analysis center through an optical fiber, and establishing a monitoring parameter database; establishing a circuit breaker compensation module, inputting the real-time monitoring parameters to the circuit breaker compensation module, and obtaining standard circuit breaker parameters; building a data analysis model, inputting the standard circuit breaker parameters into the data analysis model, and obtaining real-time circuit breaker information; and performing monitoring scheduling on the target circuit. The data transmission and monitoring efficiency of the high-voltage circuit breaker can be remarkably improved, and absolute safety and accuracy of data in the transmission process are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breaker data transmission, and in particular to a high-voltage circuit breaker data security transmission method and system based on optical fiber communication. Background Art

[0002] As a high-speed, large-capacity data transmission method, optical fiber communication plays an important role in the safe transmission of high-voltage circuit breaker data. Optical fiber communication uses the very fast transmission speed of light to provide a data transmission rate far higher than that of traditional communication technology. This enables the real-time data of high-voltage circuit breakers to be quickly and accurately transmitted to the monitoring center, providing strong support for timely analysis and decision-making. Optical fiber communication supports a larger bandwidth, so that more data can be transmitted. This is especially important for high-voltage circuit breakers, which need to transmit a large amount of real-time data, ensuring the integrity and real-time nature of the data. Compared with traditional electromagnetic communication, optical fiber communication is not subject to any electromagnetic interference. This enables high-voltage circuit breakers to maintain stable communication quality in complex electromagnetic environments and ensure the safe transmission of data. Although optical fiber communication has significant advantages in the safe transmission of high-voltage circuit breaker data, it still has some defects. The traditional cable method may have a high delay in information transmission, especially when transmitting a large amount of data, this delay may be more obvious. This delay not only affects the real-time nature of the data, but may also have an adverse effect on the control and status monitoring of the intelligent switch. The cable transmission method may be affected by factors such as electromagnetic interference and signal attenuation, resulting in reduced reliability of data transmission. In intelligent operating mechanisms, this data reliability problem may lead to incorrect execution of control commands or misreading of status data, thus affecting the safety and reliability of intelligent switches. In existing technologies, there is often a lack of effective real-time comparison and processing mechanisms for the refusal to operate or misoperation problems caused by data anomalies. This may result in the inability of intelligent switches to respond in a timely manner when anomalies occur, increasing safety risks.

[0003] In summary, the prior art has technical problems such as high delay in information transmission, and the influence of factors such as electromagnetic interference and signal attenuation, which affect the real-time and reliability of data. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention is proposed.

[0005] Therefore, the technical problem solved by the present invention is: in the prior art, there is a high delay in information transmission, and it is affected by factors such as electromagnetic interference and signal attenuation, which affects the real-time and reliability of data.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a method for securely transmitting data of a high-voltage circuit breaker based on optical fiber communication, which comprises the following steps:

[0007] Determine the target circuit, and obtain the equipment structure based on the target circuit; arrange the sensor group for the high-voltage circuit breaker according to the equipment structure, and the sensor group collects the high-voltage circuit breaker and environmental data to obtain monitoring parameters; redundantly encode the monitoring parameters, obtain multiple groups of data packets, judge the multiple groups of data packets, and obtain the judgment results; based on the judgment results, send the normal data packets to the data analysis center through optical fiber, and build a monitoring parameter database in combination with historical data; establish a circuit breaker compensation module according to the monitoring parameter database, input the real-time monitoring parameters into the circuit breaker compensation module, and obtain standard circuit breaker parameters; build a data analysis model, input the standard circuit breaker parameters into the data analysis model, and obtain real-time circuit breaker information; perform monitoring and scheduling on the target circuit based on the real-time circuit breaker information.

[0008] As a preferred solution of the method for secure transmission of high-voltage circuit breaker data based on optical fiber communication described in the present invention, the device structure includes circuit equipment and device location.

[0009] The sensor group includes a temperature sensor, a pressure sensor, a density sensor, a state sensor, a vibration sensor, a current sensor and a voltage sensor.

[0010] Temperature sensors and pressure sensors are arranged on the moving contact and the stationary contact.

[0011] Temperature sensors, pressure sensors and density sensors are arranged in the arc extinguishing chamber.

[0012] State sensors, vibration sensors and temperature sensors are arranged in the operating mechanism and transmission system.

[0013] Temperature and humidity sensors, current sensors, and voltage sensors are arranged on the insulating support and the casing.

[0014] Collecting the high-voltage circuit breaker and environmental data based on the sensor group to obtain monitoring parameters;

[0015] The sensor group is connected to the optical fiber communication.

[0016] As a preferred solution of the method for secure transmission of high-voltage circuit breaker data based on optical fiber communication described in the present invention, the judgment on multiple groups of data packets includes redundant coding verification judgment and information consistency comparison judgment.

[0017] The redundant coding check determination includes performing a check code verification on each received data packet through a predefined CRC verification, expressed as CRC (D i )=C i , and get the check result CRC c (D i ).

[0018] The information consistency comparison includes: for each data packet D i Generate a hash value H(D) through the hash function H(·) i ), use hash comparison to verify each data packet, expressed as H(D1)=H(D2)=H(D n ).

[0019] The judgment result includes normal data packets and abnormal data packets, wherein, if for any data packet D i , CRC(D i )≠C i or j makes H(D i )≠H(D j ), then the data packet is an abnormal data packet. If for all data packets, CRC(D i )=C i , j makes H(D i )=H(D j ), the data packet is a normal data packet.

[0020] If the judgment result is an abnormal data packet, the abnormal data packet is integrated to obtain an abnormal data set.

[0021] Transmission optimization is performed according to the abnormal data set.

[0022] In the judgment of the plurality of data packets, data compression technology is used to reduce the amount of calculation of the monitoring parameters.

[0023] The data compression technology is divided into subtasks that can be executed in parallel, and the subtasks are used for parallel processing.

[0024] An index library is established, and the monitoring parameters are transmitted to the index library for real-time comparison.

[0025] As a preferred solution of the method for secure transmission of high-voltage circuit breaker data based on optical fiber communication described in the present invention, the redundant code is feature extracted before the normal data packet is sent to the data analysis center via optical fiber, and classified according to the coding features to obtain classification results, which include physical layer redundancy, data link layer redundancy and transport layer redundancy.

[0026] The transmission optimization according to the abnormal data set includes classifying the abnormal data set according to the encoding features, and dividing and optimizing based on the classification results.

[0027] The division and optimization includes: when the abnormal data set shows that the signal strength is weakened to less than the limit or receives external interference, physical layer redundancy is selected; when the data frame shown by the abnormal data set contains bit errors, frame losses, and duplicate frames, data link layer redundancy is selected; when the abnormal data set contains data packet loss, data packet sequence errors, or duplicate data packets, transport layer redundancy is selected.

[0028] When physical layer redundancy is selected, communication is switched to the backup fiber.

[0029] When data link layer redundancy is selected, errors are detected and corrected by checksums, expressed as,

[0030]

[0031] Among them, ED stands for error detection, and EC stands for error correction. When an error occurs in a data frame, the retransmission mechanism will request the sender to resend the data frame. The retransmission mechanism is expressed as:

[0032]

[0033] When transport layer redundancy is selected, the transport layer protocol detects packet loss through the sequence number, requests retransmission of lost data packets, and reorders the data packets. The packet loss detection formula is expressed as:

[0034]

[0035] The retransmission request is expressed as,

[0036]

[0037] The reordering is expressed as,

[0038]

[0039] Among them, PL indicates packet loss, RR indicates retransmission request, CO indicates the order of data packets, SNM indicates that there is sequence number loss, and SNS indicates the state in which the data packets successfully received by the receiver are correctly sorted by sequence number.

[0040] If the abnormal data set is converted into a normal data set after data link layer redundancy or transport layer redundancy, it is sent to the data analysis center via optical fiber.

[0041] As a preferred solution of the method for secure transmission of high-voltage circuit breaker data based on optical fiber communication described in the present invention, wherein: the sending to the data analysis center includes setting a first secret key, encrypting the normal data packet as an optical signal to generate an instruction ciphertext, expressed as:

[0042]

[0043] Among them, C represents the command ciphertext, K1 represents the first key, and D represents the normal data set.

[0044] The first secret key is encrypted by the second key to generate a secret key ciphertext, which is expressed as:

[0045]

[0046] Here, K2 represents the second key.

[0047] The instruction ciphertext and the secret key ciphertext are sent to the data analysis center via optical fiber.

[0048] A decryption module is set at the receiving port, and the key ciphertext is decrypted based on the decryption module to obtain the first key.

[0049] The instruction ciphertext is decrypted based on the first secret key to obtain an optical signal.

[0050] As a preferred solution of the high-voltage circuit breaker data secure transmission method based on optical fiber communication described in the present invention, wherein: the establishment of the circuit breaker compensation module includes designing a basic circuit breaker compensation module, the input data of the circuit breaker compensation module is the real-time monitoring parameter, and the output data is the standard circuit breaker parameter.

[0051] Random sampling is performed based on the monitoring parameter database to establish a sample data set.

[0052] The basic circuit breaker compensation module is supervisedly trained according to the sample data set to obtain a basic circuit breaker compensation module.

[0053] As a preferred solution of the high-voltage circuit breaker data secure transmission method based on optical fiber communication described in the present invention, wherein: the establishment of the circuit breaker compensation module also includes dividing the sample data set to obtain multiple groups of sub-sample data sets.

[0054] A first sub-sample data set is extracted from the multiple groups of sub-sample data sets to train the basic circuit breaker compensation module.

[0055] When the basic circuit breaker compensation module converges, verification is performed according to remaining data sets in the multiple groups of sub-sample data sets except the first sub-sample data set to obtain a first circuit breaker compensation module.

[0056] The multiple groups of sub-sample data sets are traversed to perform training verification of the basic circuit breaker compensation module to obtain multiple groups of circuit breaker compensation modules.

[0057] Based on the multiple groups of circuit breaker compensation modules, corresponding model accuracies are obtained, the model accuracies are serialized, and a maximum value is determined.

[0058] A circuit breaker compensation module is obtained according to the multiple groups of circuit breaker compensation modules corresponding to the maximum value.

[0059] Another object of the present invention is to provide a high-voltage circuit breaker data security transmission system based on optical fiber communication, which can solve the problems of low data transmission security, slow monitoring response and low maintenance efficiency in the prior art through efficient data encryption, redundant processing and real-time monitoring technology.

[0060] To solve the above technical problems, the present invention provides the following technical solutions: a high-voltage circuit breaker data security transmission system based on optical fiber communication, including a data acquisition module, a data processing module, a data transmission module and a circuit breaker compensation module.

[0061] The data acquisition module is responsible for collecting monitoring parameters from sensors.

[0062] The data processing module performs redundant encoding of monitoring parameters and determines the status of multiple groups of data packets.

[0063] The data transmission module uses optical fiber communication technology to transmit monitoring data.

[0064] The circuit breaker compensation module uses data from the monitoring parameter database to perform model training and provide standard circuit breaker parameters for optimizing operation and maintenance.

[0065] 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 method for securely transmitting data of a high-voltage circuit breaker based on optical fiber communication as described above are implemented.

[0066] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the method for securely transmitting data of a high-voltage circuit breaker based on optical fiber communication as described above.

[0067] Beneficial effects of the present invention: The present invention can significantly improve the data transmission and monitoring efficiency of high-voltage circuit breakers, and ensure the absolute safety and accuracy of data during the transmission process. Through advanced fiber-optic communication technology and comprehensive redundant processing strategies, the system greatly reduces the risk of data loss and errors. At the same time, fast real-time data processing and response capabilities optimize the operation monitoring and fault prevention of equipment. In addition, the present invention also improves operation and maintenance efficiency and reduces maintenance costs through automated data analysis and intelligent fault diagnosis, thereby providing solid technical support for the stable operation of the power system. These beneficial effects not only improve the scientific and technological content of equipment management, but also ensure the efficiency and safety of power transmission, and have a far-reaching impact on the management and maintenance of modern power systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] 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.

[0069] Figure 1 An overall flow chart of a method for securely transmitting data of a high-voltage circuit breaker based on optical fiber communication provided in the first embodiment of the present invention.

[0070] Figure 2 A schematic diagram of a transmission optimization process in a high-voltage circuit breaker data secure transmission method based on optical fiber communication provided in a first embodiment of the present invention.

[0071] Figure 3 The overall framework diagram of the high-voltage circuit breaker data security transmission system based on optical fiber communication provided in the second embodiment of the present invention. DETAILED DESCRIPTION

[0072] 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.

[0073] Example 1, reference Figure 1-2 , is an embodiment of the present invention, and provides a method for securely transmitting data of a high-voltage circuit breaker based on optical fiber communication, which is characterized by:

[0074] S1: Determine a target circuit and obtain a device structure based on the target circuit.

[0075] Furthermore, optical fiber communication is a communication method that uses light and optical fiber to transmit information. It belongs to a type of wired communication. The principle is to input the information to be transmitted into the transmitter at the transmitting end, and superimpose or modulate the information on the laser beam emitted by the laser through modulation technology, so that the intensity of the light changes with the amplitude (frequency) of the electrical signal, and then send it out through the optical fiber. At the receiving end, the detector converts the optical signal into an electrical signal after receiving it, and restores the original information after demodulation. The safe transmission of high-voltage circuit breaker data depends on advanced data transmission equipment, which usually includes sensors, telemetry devices, and data transmission modules. These devices are responsible for accurately and reliably transmitting the data information collected by the circuit breaker to the control center. In the safe transmission of high-voltage circuit breaker data, encryption technology plays a vital role. Encryption technology can convert data into a form that is difficult to be understood by unauthorized users, thereby protecting the confidentiality and integrity of the data. The present application provides a method for secure transmission of high-voltage circuit breaker data based on optical fiber communication. By adopting advanced data transmission equipment, encryption technology, and security protocols, the security of high-voltage circuit breaker data during transmission can be ensured.

[0076] It is necessary to clarify the functions, performance requirements and design constraints of the target circuit. This can be based on system design documents, user requirements or industry standards. Obtain a circuit diagram based on the target circuit, which describes in detail the connection mode and current flow direction of each component in the circuit. According to the circuit diagram, analyze the required circuit device type, specifications and quantity, that is, the device structure, which includes various electronic components (such as resistors, capacitors, inductors, diodes, transistors, etc.), integrated circuits (such as microprocessors, logic circuits, memories, etc.), sensors and actuators, etc. Determine the location of each circuit device in the target circuit, which requires consideration of factors such as the connection relationship between the devices, heat dissipation requirements, electromagnetic compatibility (EMC) and mechanical structure. The device structure includes circuit devices and device locations, where circuit devices refer to devices that constitute the target circuit. In this application, only high-voltage circuit breakers are concerned, and the device location is the coordinate information of the high-voltage circuit breaker in the target circuit. Detailed device structure information can be obtained based on the target circuit, including the required circuit device types and specifications, quantities and their locations in the system.

[0077] S2: Arrange a sensor group on the high-voltage circuit breaker according to the equipment structure. The sensor group collects data of the high-voltage circuit breaker and the environment to obtain monitoring parameters.

[0078] A sensor group is arranged on the high-voltage circuit breaker according to the equipment structure. The sensor group collects data of the high-voltage circuit breaker and the environment to obtain monitoring parameters.

[0079] The purpose of deploying sensor groups on high-voltage circuit breakers based on a given device structure is to collect data about the high-voltage circuit breaker and its environment, thereby obtaining key monitoring parameters. According to the device structure of the high-voltage circuit breaker, selecting a suitable sensor group for deployment can comprehensively monitor the operating status and environmental parameters of the circuit breaker, providing an important basis for performance evaluation, fault diagnosis and preventive maintenance of the circuit breaker.

[0080] A sensor group is arranged on the high-voltage circuit breaker according to the equipment structure. The sensor group includes temperature sensors, pressure sensors, density sensors, state sensors, vibration sensors, current sensors and voltage sensors; temperature sensors and pressure sensors are arranged on the moving contacts and static contacts; temperature sensors, pressure sensors and density sensors are arranged in the arc extinguishing chamber; state sensors, vibration sensors and temperature sensors are arranged in the operating mechanism and transmission system; temperature and humidity sensors, current sensors and voltage sensors are arranged on the insulating support and the casing; based on the sensor group, the high-voltage circuit breaker and environmental data are collected to obtain monitoring parameters, and the sensor group is connected with the optical fiber communication.

[0081] The selection of sensor groups includes temperature sensors, which are arranged on the moving contact and the static contact to monitor the contact temperature in real time to prevent equipment failure caused by excessive temperature; arranged on the arc extinguishing chamber to monitor the temperature changes in the arc extinguishing chamber to ensure the arc extinguishing effect; arranged on the operating mechanism and transmission system to monitor the temperature during operation to evaluate its working status. Pressure sensors are arranged on the moving contact and the static contact to monitor the pressure changes between the contacts to ensure good contact between the contacts; arranged on the arc extinguishing chamber to monitor the internal gas pressure to ensure that the circuit breaker operates under appropriate pressure. Density sensors are arranged in the arc extinguishing chamber to detect the density of the gas to ensure the stability of the internal environment of the circuit breaker. State sensors are arranged on the operating mechanism and the transmission system to monitor the circuit breaker's opening and closing status, position information, etc. in real time. Vibration sensors are arranged on the operating mechanism and the transmission system to monitor the vibration of the circuit breaker during operation for fault warning and diagnosis. Current sensors are arranged on the insulation support and the casing to monitor the current passing through the circuit breaker to evaluate its load condition. The voltage sensor is arranged on the insulating support and the shell to monitor the voltage at both ends of the circuit breaker to ensure that the voltage is within the rated range. The sensor group is connected to the optical fiber communication to ensure the reliability and anti-interference of data transmission. Optical fiber communication has the advantages of high speed, low loss, and anti-electromagnetic interference, and is very suitable for use in places with complex electromagnetic environments such as high-voltage circuit breakers. By collecting high-voltage circuit breaker and environmental data through the sensor group, the following monitoring parameters can be obtained: contact temperature and pressure, which are used to evaluate the working state and contact condition of the contact; arc extinguishing chamber temperature, pressure, and gas density, which are used to monitor the arc extinguishing effect and the stability of the internal environment of the equipment; the state, temperature, and vibration of the operating mechanism and transmission system, which are used to evaluate their working state and performance; the temperature, humidity, current, and voltage of the insulating support and the shell, which are used to evaluate the load condition and insulation performance of the circuit breaker. These monitoring parameters can provide important basis for the state evaluation, fault diagnosis, and preventive maintenance of high-voltage circuit breakers. At the same time, the data is transmitted to the control center through optical fiber communication for further analysis and processing, which can realize remote monitoring and intelligent management.

[0082] S3: redundantly encode the monitoring parameters, obtain multiple groups of data packets, judge the multiple groups of data packets, and obtain judgment results.

[0083] like Figure 2 As shown, the judgment of multiple groups of data packets includes redundant coding verification judgment and information consistency comparison judgment.

[0084] Redundant coding check judgment includes performing check code verification on each received data packet through a predefined CRC verification, expressed as CRC (D i )=C i , and get the check result CRC c (D i ).

[0085] Information consistency comparison includes, for each data packet D i Generate a hash value H(D) through the hash function H(·) i ), use hash comparison to verify each data packet, expressed as H(D1)=H(D2)=H(D n ).

[0086] The judgment results include normal data packets and abnormal data packets. If for any data packet D i , CRC(D i )≠C i or j makes H(D i )≠H(D j ), then the data packet is an abnormal data packet. If for all data packets, CRC(D i )=C i , j makes H(D i )=H(D j ), the data packet is a normal data packet.

[0087] If the judgment result is an abnormal data packet, the abnormal data packet is integrated to obtain an abnormal data set.

[0088] Optimize transmission based on abnormal data sets.

[0089] Furthermore, redundant coding is a coding method that adds additional redundant information (i.e., non-essential information) to the original information. This redundant information can be used to detect errors that may occur during transmission or storage. The main purpose of redundant coding is to enable information to be better restored to its original state by increasing the number of redundant bits, thereby reducing the occurrence of errors and increasing the reliability of information. According to the application scenario and data characteristics, a suitable redundant coding technology, such as cyclic redundancy check (CRC), Hamming code, etc., is selected. The collected monitoring parameter data is encoded. The encoding process usually involves adding additional check bits or information bits after the original data to detect possible errors during subsequent data transmission or processing. According to the encoded data and communication protocol, the data is divided into multiple data packets. Each data packet contains part of the original data and corresponding redundant information. The generated multiple groups of data packets are transmitted to the data processing center through appropriate communication channels (such as optical fiber, etc.). At the data processing center, all transmitted data packets are first received and stored. Ensure that all data packets have been received correctly and aligned in the correct order. Compare the data in multiple groups of data packets. This usually involves comparing the original data and redundant information in each data packet to detect whether there are inconsistencies or errors. Based on the comparison results, a judgment result is generated. If the data in all packets are consistent and error-free, these packets are considered normal packets; if there are inconsistencies or errors, these packets are marked as abnormal packets based on the nature and severity of the errors. For packets judged to be abnormal, the cause of the abnormality can be further analyzed and corresponding processing measures can be taken, such as retransmission, error log recording, alarm issuance, etc.

[0090] In judging multiple groups of data packets, data compression technology is used to reduce the amount of calculation of monitoring parameters.

[0091] The data compression technology is divided into subtasks that can be executed in parallel, and the subtasks are used for parallel processing.

[0092] Establish an index library and transfer the monitoring parameters to the index library for real-time comparison.

[0093] Further, according to the type of monitoring parameters (such as text, image, video, time series data, etc.), a suitable compression algorithm is selected, and the monitoring parameters are used as input and processed using the selected compression algorithm. The compressed data will take up less storage space and will also reduce the amount of calculation in subsequent processing. Evaluate which parts of the compression algorithm can be executed in parallel and which parts need to be processed serially. For example, some compression algorithms may contain multiple steps that can be executed in parallel during the encoding stage. Split the parallel compression task into multiple subtasks to ensure that each subtask is independent and can be executed in parallel without waiting for other tasks to complete. Use parallel computing resources such as multi-core processors, multi-threading, distributed computing, or GPU to process multiple subtasks simultaneously. The overall processing time will be significantly reduced and the processing efficiency will be improved. The structure of the index library is designed according to the characteristics and requirements of the monitoring parameters. The index library should support efficient query and comparison operations so that it can respond quickly in a real-time environment. The monitoring parameters are transferred to the index library for comparison so that they can be completed in a short time. During the real-time comparison process, it is necessary to pay attention to the performance and stability of the system, handle abnormal situations in a timely manner, and optimize system performance.

[0094] Before sending normal data packets to the data analysis center through optical fiber, the redundant coding features are extracted and classified according to the coding features to obtain classification results, which include physical layer redundancy, data link layer redundancy and transport layer redundancy.

[0095] Transmission optimization based on abnormal data sets includes classifying the abnormal data sets according to encoding features, and dividing and optimizing based on the classification results.

[0096] The division and optimization include: when the abnormal data set shows that the signal strength is weakened or receives external interference, the physical layer redundancy is selected; when the abnormal data set shows that there are bit errors, frame losses, and duplicate frames in the data frames, the data link layer redundancy is selected; when the abnormal data set contains data packet loss, data packet sequence errors, or duplicate data packets, the transport layer redundancy is selected.

[0097] When physical layer redundancy is selected, communication is switched to the backup fiber.

[0098] When data link layer redundancy is selected, errors are detected and corrected by checksums, expressed as,

[0099]

[0100] Among them, ED stands for error detection, and EC stands for error correction. When an error occurs in a data frame, the retransmission mechanism will request the sender to resend the data frame. The retransmission mechanism is expressed as:

[0101]

[0102] When transport layer redundancy is selected, the transport layer protocol detects packet loss through the sequence number, requests retransmission of lost data packets, and reorders the data packets. The packet loss detection formula is expressed as:

[0103]

[0104] The retransmission request is expressed as,

[0105]

[0106] The reordering is expressed as,

[0107]

[0108] Among them, PL indicates packet loss, RR indicates retransmission request, CO indicates the order of data packets, SNM indicates that there is sequence number loss, and SNS indicates the state in which the data packets successfully received by the receiver are correctly sorted by sequence number.

[0109] If the abnormal data set is converted into a normal data set after data link layer redundancy or transport layer redundancy, it is sent to the data analysis center via optical fiber.

[0110] S4: Based on the judgment results, the normal data packets are sent to the data analysis center via optical fiber, and a monitoring parameter database is built in combination with historical data.

[0111] Sending to the data analysis center includes setting a first secret key, encrypting the normal data packet as an optical signal to generate a command ciphertext, expressed as:

[0112]

[0113] Among them, C represents the command ciphertext, K1 represents the first key, and D represents the normal data set.

[0114] The first secret key is encrypted by the second key to generate a secret key ciphertext, which is expressed as:

[0115]

[0116] Here, K2 represents the second key.

[0117] The command ciphertext and secret key ciphertext are sent to the data analysis center via optical fiber.

[0118] A decryption module is set at the receiving port, and the key ciphertext is decrypted based on the decryption module to obtain the first key.

[0119] The instruction ciphertext is decrypted based on the first secret key to obtain an optical signal.

[0120] Further supplement, first, a secure and high-strength first secret key needs to be set. This secret key is used to encrypt the optical signal, and it must be ensured that only the sender (usually the control system of the high-voltage circuit breaker) and the receiver (data analysis center) know it. Use the first secret key to encrypt the optical signal (i.e., the optical signal containing the monitoring parameter information) to generate an encrypted instruction ciphertext. This process is usually implemented using an encryption algorithm (such as AES, RSA, etc.) to ensure that the optical signal is not interpreted by illegal acquirers during transmission. In order to ensure the security of the first secret key during transmission, the first secret key itself needs to be encrypted. This can be achieved by using a higher-level key (called a public key or a second secret key) to generate an encrypted secret key ciphertext. This public key can be pre-shared or generated through a secure key exchange protocol (such as Diffie-Hellman key exchange). The encrypted instruction ciphertext and secret key ciphertext are sent to the data analysis center via optical fiber. Since both are encrypted, even if they are intercepted during transmission, illegal acquirers cannot directly interpret the content. A decryption module is set at the receiving port of the data analysis center. This module contains algorithms and keys for decrypting instruction ciphertext and key ciphertext. The key ciphertext is decrypted using a pre-shared public key or a second key obtained through a key exchange protocol to restore the first key. This process must ensure that only the recipient can successfully decrypt the first key. Based on the decrypted first key, the instruction ciphertext is decrypted to restore the original optical signal (i.e., the optical signal containing the monitoring parameter information). This process uses the same encryption algorithm as the encryption to ensure that the decrypted data is exactly the same as the original data. Through such an encryption and decryption process, the security of the monitoring parameter data transmitted through the optical fiber can be ensured during the transmission process, preventing the data from being intercepted and interpreted by illegal acquirers. At the same time, due to the use of high-intensity encryption algorithms and keys, it can also resist a certain degree of malicious attacks and cracking attempts.

[0121] S5: Establish a circuit breaker compensation module according to the monitoring parameter database, input the real-time monitoring parameters into the circuit breaker compensation module, and obtain standard circuit breaker parameters.

[0122] Establishing a circuit breaker compensation module includes designing a basic circuit breaker compensation module, wherein input data of the circuit breaker compensation module are real-time monitoring parameters, and output data are standard circuit breaker parameters.

[0123] Random sampling is performed based on the monitoring parameter database to establish a sample data set.

[0124] The basic circuit breaker compensation module is supervised and trained according to the sample data set to obtain the basic circuit breaker compensation module.

[0125] S6: Build a data analysis model, input standard circuit breaker parameters into the data analysis model, and obtain real-time circuit breaker information.

[0126] Establishing the circuit breaker compensation module also includes dividing the sample data set to obtain multiple groups of sub-sample data sets.

[0127] A first sub-sample data set is extracted from the multiple groups of sub-sample data sets to train a basic circuit breaker compensation module.

[0128] When the basic circuit breaker compensation module converges, verification is performed according to the remaining data sets in the plurality of sub-sample data sets except the first sub-sample data set to obtain a first circuit breaker compensation module.

[0129] Multiple groups of sub-sample data sets are traversed to perform training and verification of the basic circuit breaker compensation module, and multiple groups of circuit breaker compensation modules are obtained.

[0130] Based on multiple groups of circuit breaker compensation modules, the corresponding model accuracy is obtained, the model accuracy is serialized, and the maximum value is determined.

[0131] A circuit breaker compensation module is obtained according to the multiple groups of circuit breaker compensation modules corresponding to the maximum value.

[0132] Randomly extract samples from the complete monitoring parameter database to form a sample data set, and divide the initial sample data set into multiple non-overlapping sub-sample data sets, for example, K subsets in K-fold cross validation. Select the first group of sub-sample data sets as the training set for training the basic circuit breaker compensation module. When the basic circuit breaker compensation module converges on the training set (i.e., the model performance reaches the preset stability standard on the training set), use the remaining sub-sample data sets except the first group as the validation set for validation. Evaluate and record the performance of the model on the validation set (such as precision, recall, F1 score, etc.). Repeat the above process, but each time select a different sub-sample data set as the training set and the rest as the validation set. Ensure that each sub-sample data set is used as a validation set to make full use of the data set and obtain a comprehensive model performance evaluation. After each training and validation, save the currently trained circuit breaker compensation module (i.e., the set of training parameters), and record the model performance (precision, recall, etc.) obtained for each validation. Serialize the model accuracies obtained for all validations (i.e., sort them by performance). Find the maximum value of the serialized model accuracy, and find the corresponding circuit breaker compensation module (i.e., the optimal training parameters) based on the training set and validation set corresponding to the maximum value. Deploy the optimal circuit breaker compensation module to the actual application to output the standard circuit breaker parameters based on the real-time monitoring parameters. Continuously monitor the model performance in the actual application and adjust or retrain as needed.

[0133] Build a data analysis model, input standard circuit breaker parameters into the data analysis model, and obtain real-time circuit breaker information.

[0134] It is necessary to clearly identify the real-time circuit breaker information that needs to be obtained, such as the health status, remaining life, potential failure points, etc. of the circuit breaker. Based on the requirements, determine the main goal of the data analysis model, that is, how to derive these real-time information from the standard circuit breaker parameters. Collect historical data containing standard circuit breaker parameters, which should be able to fully reflect the working status and performance of the circuit breaker. Extract useful features from the standard circuit breaker parameters, which will be used as input for the data analysis model. Select a suitable analysis model based on the nature of the problem and the characteristics of the data. Use the prepared data set to train the selected model so that the model learns the mapping relationship from standard circuit breaker parameters to real-time circuit breaker information. For machine learning models, hyperparameter tuning may be required to improve the performance of the model. Use the validation set to verify the trained model to ensure its performance in practical applications. Deploy the trained model to an appropriate platform or system so that it can receive standard circuit breaker parameters as input in real time. When new standard circuit breaker parameters are received, use the deployed model for real-time processing to generate real-time circuit breaker information.

[0135] S7: Perform monitoring and scheduling on the target circuit based on the real-time circuit breaker information.

[0136] By processing the standard circuit breaker parameters through the data analysis model, the working status, load conditions, fault warning and other key information of the circuit breaker are obtained in real time. Using modern data processing technology, the collected data is transmitted to the data center for analysis and processing. Based on the real-time circuit breaker information and the operating parameters of the target circuit, real-time monitoring and scheduling decisions are made. Monitor the voltage, current, power and other parameters of the target circuit to ensure that it operates within a safe range. Combined with real-time circuit breaker information, abnormal conditions in the circuit are discovered in a timely manner. Using big data analysis technology, historical data and real-time data are mined and analyzed to predict potential fault points. When a fault or abnormality is found, fault diagnosis is automatically performed and corresponding processing suggestions are given. According to the actual needs of the target circuit and real-time circuit breaker information, a reasonable scheduling control strategy is formulated. Through the channel function of control command and operation data transmission, remote control and adjustment of the target circuit are realized. The method of safe transmission of high-voltage circuit breaker data based on optical fiber communication mainly relies on the widespread application of optical fiber communication technology in the power system, and uses its high-speed transmission, large capacity, remote monitoring and control, safety and fault diagnosis characteristics to ensure the safe transmission of high-voltage circuit breaker data and the stable operation of the power system. It solves the technical problem that fiber-optic communication still faces eavesdropping, tampering or forgery during data transmission. By adopting advanced optical transmission encryption technology, the security of high-voltage circuit breaker data during transmission is ensured. Through optical fiber monitoring technology, the operating status of the optical fiber line can be monitored in real time, realizing timely discovery and response to security risks and ensuring the technical effect of stable data transmission.

[0137] The monitoring parameters are redundantly encoded, and data anomalies are judged by comparing multiple groups of data packets. This method enhances the data error detection and correction capabilities and ensures the integrity and accuracy of the transmitted data.

[0138] A circuit breaker compensation module was established based on the monitoring parameter database, which can adjust and compensate standard circuit breaker parameters according to real-time monitoring parameters, improving the response speed and accuracy of the system.

[0139] The data analysis model is used to process standard circuit breaker parameters, obtain real-time circuit breaker information, and monitor and schedule target circuits, thereby improving the operating efficiency and safety of circuit breakers.

[0140] The introduction of data compression technology and key encryption measures reduces the amount of data processing and improves the security of data transmission.

[0141] Example 2, reference Figure 3 , which is an embodiment of the present invention, provides a system for a high-voltage circuit breaker data security transmission method based on optical fiber communication, characterized in that it includes a data acquisition module, a data processing module, a data transmission module and a circuit breaker compensation module.

[0142] The data acquisition module is responsible for collecting monitoring parameters from sensors.

[0143] The data processing module performs redundant encoding of monitoring parameters and determines the status of multiple groups of data packets.

[0144] The data transmission module uses optical fiber communication technology to transmit monitoring data.

[0145] The circuit breaker compensation module uses data from the monitoring parameter database for model training and provides standard circuit breaker parameters for optimized operation and maintenance.

[0146] 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 method 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 code.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] 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 method for securely transmitting data of a high-voltage circuit breaker based on optical fiber communication, characterized in that: include: Determine a target circuit, and obtain a device structure based on the target circuit; The sensor group is arranged on the high-voltage circuit breaker according to the equipment structure. The sensor group collects the high-voltage circuit breaker and environmental data to obtain monitoring parameters; Redundantly encode the monitoring parameters, obtain multiple groups of data packets, judge the multiple groups of data packets, and obtain judgment results; Based on the judgment results, normal data packets are sent to the data analysis center through optical fiber, and a monitoring parameter database is built in combination with historical data; Establishing a circuit breaker compensation module according to the monitoring parameter database, inputting the real-time monitoring parameters into the circuit breaker compensation module, and obtaining standard circuit breaker parameters; Build a data analysis model, input standard circuit breaker parameters into the data analysis model, and obtain real-time circuit breaker information; The target circuit is monitored and scheduled based on the real-time circuit breaker information.

2. The method for secure transmission of high-voltage circuit breaker data based on optical fiber communication according to claim 1, characterized in that: The device structure includes circuit devices and device locations; The sensor group includes a temperature sensor, a pressure sensor, a density sensor, a state sensor, a vibration sensor, a current sensor and a voltage sensor; Temperature sensors and pressure sensors are arranged on the moving contact and the stationary contact; Temperature sensors, pressure sensors and density sensors are arranged in the arc extinguishing chamber; Arrange status sensors, vibration sensors and temperature sensors in the operating mechanism and transmission system; Temperature and humidity sensors, current sensors and voltage sensors are arranged on the insulating support and the housing; Collecting the high-voltage circuit breaker and environmental data based on the sensor group to obtain monitoring parameters; The sensor group is connected to the optical fiber communication.

3. The method for secure transmission of high-voltage circuit breaker data based on optical fiber communication according to claim 2, characterized in that: The judgment of the multiple groups of data packets includes redundant coding verification judgment and information consistency comparison judgment; The redundant coding check determination includes performing a check code verification on each received data packet through a predefined CRC verification, expressed as CRC (D i )=C i , and get the check result CRC c (D i ); The information consistency comparison includes: for each data packet D i Generate a hash value H(D) through the hash function H(·) i ), use hash comparison to verify each data packet, expressed as H(D1)=H(D2)=H(D n ); The judgment result includes normal data packets and abnormal data packets, wherein, if for any data packet D i , CRC(D i )≠C i or So that H(D i )≠H(D j ), then the data packet is an abnormal data packet. If for all data packets, CRC(D i )=C i , So that H(D i )=H(D j ), the data packet is a normal data packet; If the judgment result is an abnormal data packet, the abnormal data packet is integrated to obtain an abnormal data set; performing transmission optimization according to the abnormal data set; In the judgment of the plurality of data packets, data compression technology is used to reduce the amount of calculation of the monitoring parameters; Splitting the data compression technology into subtasks that can be executed in parallel, and using the subtasks for parallel processing; An index library is established, and the monitoring parameters are transmitted to the index library for real-time comparison.

4. The method for secure transmission of high-voltage circuit breaker data based on optical fiber communication according to claim 3, characterized in that: Before sending the normal data packet to the data analysis center through the optical fiber, the redundant code is feature extracted, and classification is performed according to the coding feature to obtain the classification result, and the classification result includes physical layer redundancy, data link layer redundancy and transport layer redundancy; The performing transmission optimization according to the abnormal data set includes classifying the abnormal data set according to the coding features, and dividing and optimizing based on the classification results; The division and optimization includes selecting physical layer redundancy when the abnormal data set shows that the signal strength is weakened to less than the limit or receives external interference, selecting data link layer redundancy when the data frame shown by the abnormal data set has bit errors, frame loss, and repeated frames, and selecting transport layer redundancy when the abnormal data set has data packet loss, data packet sequence errors, or repeated data packets. When physical layer redundancy is selected, communication is switched to the backup fiber; When data link layer redundancy is selected, errors are detected and corrected by checksums, expressed as, Among them, ED stands for error detection, and EC stands for error correction. When an error occurs in a data frame, the retransmission mechanism will request the sender to resend the data frame. The retransmission mechanism is expressed as: When transport layer redundancy is selected, the transport layer protocol detects packet loss through the sequence number, requests retransmission of lost data packets, and reorders the data packets. The packet loss detection formula is expressed as: The retransmission request is expressed as, The reordering is expressed as, Among them, PL indicates packet loss, RR indicates retransmission request, CO indicates the order of data packets, SNM indicates that there is sequence number loss, and SNS indicates the state in which the data packets successfully received by the receiver are correctly sorted according to the sequence number; If the abnormal data set is converted into a normal data set after data link layer redundancy or transport layer redundancy, it is sent to the data analysis center via optical fiber.

5. The method for secure transmission of high-voltage circuit breaker data based on optical fiber communication according to claim 4, characterized in that: The sending to the data analysis center includes setting a first secret key, encrypting the normal data packet as an optical signal to generate a command ciphertext, expressed as: Wherein, C represents the command ciphertext, K1 represents the first key, and D represents the normal data set; The first secret key is encrypted by the second key to generate a secret key ciphertext, which is expressed as: Wherein, K2 represents the second key; Sending the instruction ciphertext and the key ciphertext to the data analysis center via optical fiber; A decryption module is set at the receiving port, and the key ciphertext is decrypted based on the decryption module to obtain the first key; The instruction ciphertext is decrypted based on the first secret key to obtain an optical signal.

6. The method for secure transmission of high-voltage circuit breaker data based on optical fiber communication according to claim 5, characterized in that: The establishing of the circuit breaker compensation module includes designing a basic circuit breaker compensation module, wherein the input data of the circuit breaker compensation module is a real-time monitoring parameter, and the output data is a standard circuit breaker parameter; Perform random sampling based on the monitoring parameter database to establish a sample data set; The basic circuit breaker compensation module is supervisedly trained according to the sample data set to obtain a basic circuit breaker compensation module.

7. The method for secure transmission of high-voltage circuit breaker data based on optical fiber communication according to claim 6, characterized in that: The establishing of the circuit breaker compensation module further includes dividing the sample data set to obtain a plurality of sub-sample data sets; Extracting a first sub-sample data set from the plurality of sub-sample data sets to train the basic circuit breaker compensation module; When the basic circuit breaker compensation module converges, verification is performed according to remaining data sets of the multiple groups of sub-sample data sets except the first sub-sample data set to obtain a first circuit breaker compensation module; Traversing the multiple groups of sub-sample data sets to perform training verification of the basic circuit breaker compensation module, and obtaining multiple groups of circuit breaker compensation modules; Acquire corresponding model accuracies based on the multiple groups of circuit breaker compensation modules, serialize the model accuracies, and determine a maximum value; A circuit breaker compensation module is obtained according to the multiple groups of circuit breaker compensation modules corresponding to the maximum value.

8. A system using the high-voltage circuit breaker data security transmission method based on optical fiber communication as claimed in any one of claims 1 to 7, characterized in that: It includes data acquisition module, data processing module, data transmission module and circuit breaker compensation module; The data acquisition module is responsible for collecting monitoring parameters from sensors; The data processing module performs redundant encoding of monitoring parameters and determines the status of multiple groups of data packets; The data transmission module uses optical fiber communication technology to transmit monitoring data; The circuit breaker compensation module uses data from the monitoring parameter database to perform model training and provide standard circuit breaker parameters for optimizing operation and maintenance.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method for securely transmitting data of a high-voltage circuit breaker based on optical fiber communication according to any one of claims 1 to 7 are implemented.

10. 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 securely transmitting data of a high-voltage circuit breaker based on optical fiber communication as claimed in any one of claims 1 to 7 are implemented.

Images