Unlocking method of five-prevention locking of transformer substation

Abstract

The application provides a method for unlocking the five-prevention locking of a transformer substation. In the method, when the intelligent five-prevention key detects the radio frequency identification tag in the electrical equipment through the radio frequency identification reader, the target equipment identifier in the radio frequency identification tag is acquired. Then, it is judged whether the self stores the verification data. If the self stores the verification data, whether to unlock the lock is determined according to the to-be-compared equipment identifier and the target equipment identifier in the verification data. Since the verification data is generated and sent to the intelligent five-prevention key by the server after determining that the operation of the previous electrical equipment of the electrical equipment in the equipment operation sequence is completed, or after determining that the electrical equipment is the first equipment in the operation sequence, whether to unlock the lock is determined only when the intelligent five-prevention key stores the verification data in the present scheme, the operation danger is reduced, and the operation safety is improved.

Description

Technical Field

[0001] This application relates to the field of power grid technology, and in particular to a method for unlocking a five-prevention interlocking system in a substation. Background Technology

[0002] In the operation of electrical equipment in high-voltage substations, the "five preventions" (preventing accidental opening / closing of circuit breakers, preventing opening / closing of disconnecting switches under load, preventing the connection / closing of grounding wires while energized, preventing the closing of circuit breakers with grounding wires connected, and preventing accidental entry into energized compartments) are the core requirements for ensuring operational safety. Due to these five prevention requirements, the operation of electrical equipment must follow a specific sequence; operating electrical equipment out of sequence can be dangerous. Therefore, locks can be installed on electrical equipment to ensure that the locks are unlocked and the equipment is operated in the correct order.

[0003] In existing technologies, the unlocking method typically involves staff arriving at the electrical equipment and sending the equipment's identifier to a server via a smart five-proof key. The server verifies that the identifier is correct and conforms to the sequence, then sends an unlocking command to the smart five-proof key, which unlocks the locks on the electrical equipment.

[0004] However, if the operation of the previous electrical equipment has not been completed, the staff can still unlock and operate the current electrical equipment, which leads to a high level of operational danger. Summary of the Invention

[0005] The unlocking method for the five-prevention interlocking of substations provided in this application is used to solve the problem that existing unlocking methods allow workers to unlock and operate the current electrical equipment before the operation of the previous electrical equipment is completed, resulting in a high level of operational danger.

[0006] In a first aspect, embodiments of this application provide a method for unlocking a five-prevention interlocking system in a substation, applied to a smart five-prevention key, wherein the smart five-prevention key includes a radio frequency identification reader / writer, and the method includes:

[0007] When the RFID reader detects an RFID tag in an electrical device, it acquires the target device identifier from the RFID tag.

[0008] The system determines whether it has stored verification data. The verification data is generated and sent to the smart five-proof key by the server after determining that the operation of the previous electrical device in the operation sequence has been completed, or after determining that the electrical device is the first device in the operation sequence.

[0009] If the device itself stores verification data, it determines whether to unlock the lock based on the device identifier to be compared and the target device identifier in the verification data.

[0010] In one possible implementation, determining whether to unlock the lock based on the device identifier to be compared and the target device identifier in the verification data includes:

[0011] If the identifier of the device to be compared is the same as the identifier of the target device, then the lock is unlocked;

[0012] If the device identifier to be compared is different from the target device identifier, the lock will not be unlocked.

[0013] In one possible implementation, the method further includes:

[0014] The RFID reader receives a locked identifier sent by the RFID transmitter in the lock.

[0015] Delete the verification data;

[0016] Send a verification request to the server, the verification request including the locked identifier, the target device identifier, and the verification token in the verification data;

[0017] Receive and store the verification data sent by the server;

[0018] The lock includes a radio frequency identification transmitter, a Hall sensor, and a magnet. The magnet is installed in the bolt of the lock. When the lock detects that the bolt is in a locked state through the Hall sensor, it sends a locked indicator through the radio frequency identification transmitter.

[0019] In one possible implementation, the method further includes:

[0020] Receive the operation termination command sent by the server;

[0021] Output an operation completion message.

[0022] In one possible implementation, the method further includes:

[0023] Receive the locking command sent by the server;

[0024] Lock the smart five-proof key.

[0025] Secondly, embodiments of this application provide a method for unlocking a five-prevention interlocking system in a substation, applied to a server, comprising:

[0026] Receive a verification request sent by the smart five-proof key, the verification request including a locked identifier, a target device identifier, and a verification token;

[0027] Based on the verification request and the device identifier to be compared with the current electrical equipment, a verification process is performed to generate a verification result indicating whether the operation of the current electrical equipment is completed;

[0028] If the verification result indicates that the operation of the current electrical device is completed, and there is a next electrical device in the operation sequence of the current electrical device, then the next electrical device in the operation sequence of the current electrical device is taken as the new current electrical device;

[0029] Generate a new verification token based on the new token generation data of the current electrical device;

[0030] Based on the new current electrical equipment's identification for comparison and the new verification token, verification data is generated and sent to the smart five-proof key.

[0031] In one possible implementation, the step of performing verification processing based on the verification request and the device identifier to be compared with the current electrical device, and generating a verification result indicating whether the operation of the current electrical device is completed, includes:

[0032] The verification token is decrypted to obtain the generation data of the token to be compared;

[0033] If the verification request includes a locked identifier, the target device identifier is the same as the device identifier to be compared of the current electrical device, and the token generation data to be compared is the same as the token generation data of the current electrical device, then a verification result indicating that the operation of the current electrical device is completed is generated;

[0034] If the verification request does not include a locked identifier, the target device identifier is different from the device identifier to be compared of the current electrical device, or the token generation data to be compared is different from the token generation data of the current electrical device, then a verification result indicating that the operation of the current electrical device is incomplete is generated.

[0035] In one possible implementation, the method further includes:

[0036] If the verification result indicates that the operation of the current electrical device is complete, and there is no next electrical device in the operation sequence of the current electrical device, then an operation end command is sent to the smart five-proof key.

[0037] In one possible implementation, the method further includes:

[0038] If the verification result indicates that the operation of the current electrical equipment has not been completed, a locking command is sent to the smart five-proof key.

[0039] In one possible implementation, before receiving the verification request sent by the smart five-proof key, the method further includes:

[0040] If the current electrical device is the first electrical device in the device operation sequence, a verification token is generated based on the token generation data of the current electrical device;

[0041] Based on the device identifier to be compared of the current electrical equipment and the verification token, verification data is generated and sent to the smart five-proof key.

[0042] Thirdly, this application provides an unlocking device for a five-prevention interlocking system in a substation, comprising:

[0043] The acquisition module is used to acquire the target device identifier in the RFID tag when the RFID reader detects the RFID tag in the electrical equipment;

[0044] The processing module is used to determine whether it has stored verification data. The verification data is generated and sent to the smart five-proof key by the server after the operation of the previous electrical device in the device operation sequence is completed, or after the electrical device is determined to be the first device in the operation sequence.

[0045] The unlocking module is used to determine whether to unlock the lock based on the device identifier to be compared and the target device identifier in the verification data if it has stored verification data.

[0046] Fourthly, this application provides an unlocking device for a five-prevention interlocking system in a substation, comprising:

[0047] The receiving module is used to receive the verification request sent by the smart five-proof key. The verification request includes a locked identifier, a target device identifier, and a verification token.

[0048] Processing module, used for:

[0049] Based on the verification request and the device identifier to be compared with the current electrical equipment, a verification process is performed to generate a verification result indicating whether the operation of the current electrical equipment is completed;

[0050] If the verification result indicates that the operation of the current electrical device is completed, and there is a next electrical device in the operation sequence of the current electrical device, then the next electrical device in the operation sequence of the current electrical device is taken as the new current electrical device;

[0051] Generate a new verification token based on the new token generation data of the current electrical device;

[0052] The sending module is used to generate verification data and send it to the smart five-proof key based on the new current electrical equipment's device identifier to be compared and the new verification token.

[0053] Fifthly, this application provides an unlocking device for a five-prevention interlocking system in a substation, which sends a locked identifier via a radio frequency identification transmitter when the Hall sensor detects that the latch is in a locked state.

[0054] Sixthly, this application provides a smart five-proof key, comprising:

[0055] Radio frequency identification (RFID) reader / writer, processor, memory, communication interface;

[0056] The memory is used to store the executable instructions of the processor;

[0057] The processor is configured to execute the unlocking method for the five-prevention interlocking of the substation as described in any of the first aspects by executing the executable instructions.

[0058] Seventhly, this application provides a server, comprising:

[0059] Processor, memory, communication interface;

[0060] The memory is used to store the executable instructions of the processor;

[0061] The processor is configured to execute the unlocking method for the five-prevention interlocking of the substation as described in any of the second aspects by executing the executable instructions.

[0062] Eighthly, this application provides a lock, comprising:

[0063] The processor, memory, radio frequency identification transmitter, Hall sensor, magnet, and bolt, with the magnet installed in the bolt;

[0064] The memory is used to store the executable instructions of the processor;

[0065] The processor is configured to send a locked identifier via the radio frequency identification transmitter when the Hall sensor detects that the latch is in a locked state.

[0066] Ninthly, this application provides a readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the unlocking method for the five-prevention interlocking of a substation as described in either the first or second aspect.

[0067] In a tenth aspect, this application provides a computer program product, including a computer program, which, when executed by a processor, is used to implement the unlocking method for the five-prevention interlocking of a substation as described in either the first or second aspect.

[0068] The substation five-proof interlocking unlocking method provided in this application embodiment involves the smart five-proof key detecting an RFID tag in an electrical device via an RFID reader and obtaining the target device identifier from the RFID tag. It then determines whether it has stored verification data. If it does, it determines whether to unlock the lock based on the device identifier to be compared and the target device identifier in the verification data. Since the verification data is generated and sent to the smart five-proof key by the server after determining that the previous electrical device in the device operation sequence has completed its operation, or after determining that the current electrical device is the first device in the operation sequence, this solution only determines whether to unlock the lock if the smart five-proof key has stored verification data, reducing operational risks and improving operational safety. Attached Figure Description

[0069] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0070] Figure 1 A flowchart illustrating an embodiment of the unlocking method for the five-prevention interlocking of a substation provided in this application;

[0071] Figure 2 A flowchart illustrating Embodiment 2 of the unlocking method for the five-prevention interlocking of a substation provided in this application;

[0072] Figure 3 A flowchart illustrating Embodiment 3 of the unlocking method for the five-prevention interlocking of a substation provided in this application;

[0073] Figure 4 A schematic diagram of the structure of the unlocking device for the five-prevention interlocking system of the substation provided in this application (Example 1);

[0074] Figure 5 A schematic diagram of the structure of the unlocking device for the five-prevention interlocking system of the substation provided in this application, according to Embodiment 2;

[0075] Figure 6 This application provides a structural schematic diagram of a smart five-proof key;

[0076] Figure 7 A schematic diagram of the structure of a server provided in this application;

[0077] Figure 8 This is a structural schematic diagram of a lock provided in this application.

[0078] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0079] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0080] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0081] The operation of electrical equipment in high-voltage substations falls under the technical field of power system safety control and anti-misoperation interlocking. Typical application scenarios include circuit breaker opening and closing, disconnecting switch operation, and grounding wire installation and removal. In the operation of electrical equipment in high-voltage substations, the "five preventions" (preventing accidental opening / closing of circuit breakers, preventing opening / closing of disconnecting switches under load, preventing grounding wire installation / closing while energized, preventing closing circuit breakers with grounding wires connected, and preventing accidental entry into energized compartments) are the core requirements for ensuring operational safety. Due to these five prevention requirements, the operation of electrical equipment must follow a specific sequence. Operating electrical equipment out of sequence can be dangerous. Therefore, locks can be installed on the electrical equipment to ensure that the locks are unlocked and the electrical equipment is operated in the correct order.

[0082] In existing technologies, the unlocking method typically involves staff arriving at the electrical equipment and sending the equipment's identifier to a server via a smart five-proof key. The server verifies that the identifier is correct and conforms to the sequence, then sends an unlocking command to the smart five-proof key, which unlocks the locks on the electrical equipment.

[0083] However, unlocking the current electrical equipment is often based on the assumption that "the operation of the previous electrical equipment has been completed." If the operation of the previous electrical equipment has not been completed, the staff can still unlock and operate the current electrical equipment, which can lead to a high degree of operational danger.

[0084] To address the problems existing in the prior art, the inventors, during their research on unlocking methods for the five-prevention interlocking system in substations, discovered that, to improve the operational safety of electrical equipment, after the previous electrical equipment's operation is completed and the lock is engaged, the lock sends a locked status message to the smart five-prevention key. The smart five-prevention key sends a verification request to the server. After verification, the server generates a verification result indicating the completion of the current electrical equipment's operation and sends the generated verification data to the smart five-prevention key for storage. Once the smart five-prevention key obtains the target device identifier of the electrical equipment, if it has stored verification data, it determines whether to unlock the lock based on the device identifier to be compared and the target device identifier in the verification data. By determining whether to unlock and operate the current electrical equipment only after confirming the completion of the previous electrical equipment's operation, operational safety is improved. Based on the above inventive concept, the unlocking scheme for the five-prevention interlocking system in substations as described in this application was designed.

[0085] The following example illustrates the application scenarios of the unlocking method for the five-prevention interlocking of substations provided in this application.

[0086] For example, in this application scenario, staff need to perform power outage maintenance on a substation. The staff sends the substation's identifier to the server. Based on the substation's identifier, the server identifies the electrical equipment involved in the power outage maintenance and then generates the equipment operation sequence. After the operation of the previous electrical equipment in the determined equipment operation sequence is completed, or after determining that the current electrical equipment is the first equipment in the operation sequence, the server generates verification data and sends it to the smart five-proof key for storage.

[0087] When staff arrive at the electrical equipment carrying the smart five-proof key, the smart five-proof key detects the RFID tag in the electrical equipment through its own radio frequency identification (RFID) reader and obtains the target equipment identifier from the RFID tag.

[0088] Then, it determines whether it has stored verification data. If it has stored verification data, it determines whether to unlock the lock based on the device identifier to be compared and the target device identifier in the verification data.

[0089] After the smart five-proof key unlocks the lock, staff can operate the electrical equipment. After the operation is completed, the lock can be locked again.

[0090] The lock includes an RFID transmitter, a Hall sensor, and a magnet. The magnet is installed in the bolt of the lock. When the Hall sensor detects that the bolt is in the locked state, the lock sends a locked indicator through the RFID transmitter.

[0091] The smart five-proof key, after receiving the locked identifier via an RFID reader, deletes the verification data and sends a verification request to the server.

[0092] The server performs verification processing based on the verification request and the device identifier to be compared for the current electrical device, and generates a verification result. If the verification result indicates that the operation of the current electrical device is completed, and there is a next electrical device in the operation sequence of the current electrical device, then the next electrical device in the operation sequence of the current electrical device is taken as the new current electrical device.

[0093] Then, based on the token generation data of the new current electrical equipment, a new verification token is generated; based on the device identifier to be compared of the new current electrical equipment and the new verification token, verification data is generated and sent to the smart five-proof key for storage.

[0094] It should be noted that the above scenario is only an example of an application scenario provided by the embodiments of this application. The embodiments of this application do not limit the actual form of the various devices included in the scenario, nor do they limit the interaction method between devices. In the specific application of the solution, it can be set according to actual needs.

[0095] The technical solution of this application will now be described in detail through specific embodiments. It should be noted that the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0096] Figure 1 This is a flowchart illustrating an embodiment of the unlocking method for the five-prevention interlocking system in a substation provided in this application. This embodiment describes how, after the intelligent five-prevention key obtains the target device identifier of the electrical equipment, if it determines that it has stored verification data, it determines whether to unlock the lock based on the device identifier to be compared and the target device identifier in the verification data. The method in this embodiment can be implemented through software, hardware, or a combination of both. Figure 1 As shown, the unlocking method for the five-prevention interlock of this substation specifically includes the following steps:

[0097] S101: When an RFID tag is detected in an electrical device by an RFID reader, the target device identifier in the RFID tag is obtained.

[0098] In this embodiment, the intelligent five-proof key serves as a field execution terminal, carrying out device identification, verification data storage, and unlocking control logic. Internally, it may include a microcontroller, an RFID reader / writer, a storage unit, a power module, a communication module, and an unlocking execution unit that interacts with the lock. The RFID reader / writer detects RFID tags in electrical equipment and reads their identification information. The electrical equipment includes circuit breakers, disconnect switches, grounding switches, grounding wire attachment / removal devices, or other equipment requiring five-proof interlocking management in substations. RFID tags are installed on the electrical equipment body, nameplate, near the lock, or in a fixed mounting position bound to the equipment, storing a target device identifier that identifies the electrical equipment. The target device identifier can be a combination of equipment code, interval number, and equipment type code, or a set of unique identification data mapped to a backend database.

[0099] In this step, since the smart five-proof key always has an RFID reader and the electrical equipment has an RFID tag, when the staff arrives at the electrical equipment with the smart five-proof key, the RFID reader can automatically transmit an RFID interrogation signal after detecting that the staff has entered the preset sensing distance, which will activate the RFID tag installed on the electrical equipment to respond. The smart five-proof key will then receive the data frame returned by the tag and parse the target device identifier from it.

[0100] In other words, when an RFID reader detects an RFID tag in an electrical device, it obtains the target device identifier from the RFID tag.

[0101] It should be noted that the target equipment identifier is the identifier of the electrical equipment.

[0102] In one possible embodiment, to reduce false triggering and interference from irrelevant tags, the smart five-proof key can be set with a trigger button, proximity wake-up switch, or posture trigger mechanism. After receiving a manual trigger signal or meeting the proximity conditions, it starts radio frequency scanning. After completing the reading, it writes the target device identifier into the internal buffer, along with auxiliary fields such as the reading time, reader signal strength, and device operation interval information, for subsequent comparison and auditing.

[0103] If multiple tags are detected simultaneously in the same area, the smart five-proof key can prioritize the tag with the strongest signal strength to obtain the target device's identifier. It can also output a prompt when the reading result is abnormal, requiring the operator to bring the tag closer to the target device for identification again.

[0104] Based on the above analysis, this step utilizes contactless data interaction between the RFID reader and the RFID tag to automatically identify the actual electrical equipment before the on-site unlocking action. This allows the system to obtain the target equipment identifier directly from the on-site object, transforming the previous method of relying on manual identification of equipment names and locations into a machine-identifiable, storable, and logically computational object identification method. In this way, even in scenarios such as nighttime patrols, dense equipment deployment, dual numbering, or similar identifiers, the smart five-proof key can still automatically extract equipment identification information when physically approaching the target equipment. This provides reliable input for subsequent determination of whether the current equipment is indeed an authorized object, thereby reducing the discrepancy between the sequential authorization in the background and the actual object on-site.

[0105] S102: Determine whether it stores verification data.

[0106] In this step, after obtaining the target device identifier, the smart five-proof key needs to determine whether operating the electrical device is dangerous. This requires checking whether the previous electrical device has been operated, or whether the current electrical device is the first electrical device. It also requires checking whether it has stored verification data.

[0107] The verification data is generated and sent to the smart five-proof key by the server after determining that the operation of the previous electrical device in the operation sequence has been completed, or after determining that the electrical device is the first device in the operation sequence.

[0108] It should be noted that the verification data includes the identifier to be compared, which is the identifier of the electrical equipment that should be operated at the moment, as determined by the server.

[0109] Verification data may also include verification token, generation time, validity period, session identifier, data digest, integrity check code, and smart five-proof key identifier.

[0110] S103: If the device itself stores verification data, determine whether to unlock the lock based on the device identifier to be compared and the target device identifier in the verification data.

[0111] In this step, if the smart five-proof key determines that it has stored verification data, it means that the electrical device is the first device in the operation sequence, or that the operation of the previous electrical device has been completed, and operating the electrical device will not pose a danger. Then, based on the device identifier to be compared and the target device identifier in the verification data, it determines whether to unlock the lock. The lock is the lock on the electrical device.

[0112] The device identifier to be compared is a core field in the verification data. It is used to identify the target device whose identity is currently allowed to be operated on, based on the operation sequence. The target device identifier is the actual device identity information read by the RFID reader from the RFID tag in the electrical equipment on-site. The lock is the locking actuator installed on the electrical equipment.

[0113] If the identification of the device to be compared is the same as that of the target device, it means that the electrical device is the one that should be operated at the moment. In this case, the lock is unlocked and the staff can then operate the electrical device.

[0114] If the identification of the device to be compared does not match the identification of the target device, it indicates that the electrical device is not the one that should be operated at the moment. In this case, the lock should not be unlocked, and a mismatch message should be output via a display screen, buzzer, indicator light, or voice module to inform the operator that the device currently being compared is not the one that should be operated, so that the operator can unlock the correct electrical device. If necessary, this mismatch event should be logged and uploaded to the server for background operational risk monitoring.

[0115] The method for unlocking the lock can be as follows: outputting an unlocking control signal to drive the electromagnetic actuator or mechanical release mechanism of the lock to actuate, thereby releasing the lock. The unlocking control signal can be transmitted via wires, electrical contacts, or wireless communication. To improve field adaptability, the identifiers of the device to be compared and the target device can be stored and parsed using a unified encoding rule. The encoding length can be 8 to 32 characters, and the specific format can be determined according to the actual situation. This application embodiment does not limit this.

[0116] This comparison mechanism takes the actual on-site identification results as input and uses the expected device identity in the verification data as the basis for judgment. The comparison result is directly mapped to whether or not the lock is unlocked, ensuring that the unlocking behavior is consistent with the electrical equipment that should be operated. Because the unlocking conditions no longer rely on general permissions but on the strict consistency of specific device identification, it maintains high identification reliability even when there are many devices on-site, similar identifications, or complex environments, and avoids mis-locking locks on adjacent or incorrect devices. Therefore, the system can directly associate the sequence constraints generated by the server with the on-site device identification results, improving the accuracy of anti-misoperation interlocking while ensuring the correctness of the operational logic, thereby reducing the risk of misoperation in the substation.

[0117] It should be noted that if it determines that it has not stored verification data, it will not unlock the lock and will output an alarm message.

[0118] It should be noted that before operating the first electrical device, staff can send their biometric data to the server via a terminal device. The server sends verification data including this biometric data. The smart five-proof key may include a device capable of detecting biometrics. After obtaining the target device's identifier, it can output a biometric data retrieval message, thereby obtaining the staff's biometric data to be compared through this device.

[0119] If it is determined that the device itself stores verification data, and the biometric data sent by the server is the same as the biometric data to be compared, then it is determined whether to unlock the lock based on the device identifier to be compared and the target device identifier in the verification data.

[0120] If it is determined that the lock does not have stored verification data, or that the biometric data sent by the server is different from the biometric data to be compared, the lock will not be unlocked and an alarm message will be output.

[0121] Verifying the identity of staff can prevent others from unlocking and operating electrical equipment, thus improving unlocking security.

[0122] Furthermore, the smart five-proof key can also determine whether its remaining battery power is greater than a preset battery power threshold, and whether there are any abnormalities in the communication between the smart five-proof key and the lock.

[0123] If the device has stored verification data, the biometric data sent by the server is the same as the biometric data to be compared, the device has a remaining battery power greater than the preset battery power threshold, and there is no abnormality in the communication between the smart five-proof key and the lock, then the device to be compared and the target device in the verification data will determine whether to unlock the lock.

[0124] If it is determined that the device does not store verification data, the biometric data sent by the server is different from the biometric data to be compared, the device's remaining battery power is less than or equal to the preset battery power threshold, or there is an abnormality in the communication between the smart five-proof key and the lock, the lock will not be unlocked and an alarm message will be output.

[0125] The preset power threshold can be 10%, 5%, 2%, etc. This application embodiment does not limit the preset power threshold, and it can be determined according to the actual situation.

[0126] Based on the above analysis, this step directly compares the device identifier to be compared in the verification data with the target device identifier read in real time on site, unifying the operation sequence and the on-site physical object identification results into the same judgment chain. Lock unlocking is only triggered when both "sequence allowed" and "object consistent" are met simultaneously. This transforms the unlocking behavior from traditional abstract permission-based access control to precise unlocking based on specific device identity binding. It effectively suppresses the risk of misoperation caused by factors such as going to the wrong bay, misreading the serial number, or mistakenly entering adjacent device locations, improving the safety, accuracy, and traceability of the substation's five-prevention interlocking unlocking process.

[0127] The substation five-prevention interlocking unlocking method provided in this embodiment obtains the target device identifier from the RFID tag when the smart five-prevention key detects the RFID tag in the electrical equipment via an RFID reader. It then determines whether it has stored verification data. If it does, it determines whether to unlock the lock based on the device identifier to be compared and the target device identifier in the verification data. Since the verification data is generated and sent to the smart five-prevention key by the server after determining that the previous electrical device in the operation sequence has completed its operation, or after determining that the current electrical device is the first device in the operation sequence, this solution only determines whether to unlock the lock if the smart five-prevention key has stored verification data, reducing operational risks and improving operational safety.

[0128] This solution not only prevents premature unlocking when the previous electrical equipment has not been operated, but also prevents accidental locking when the wrong equipment is selected on-site, even though operation of the equipment is possible. This bridges the gap between the correctness of the backend logic and the correctness of the on-site object in existing technologies. For scenarios in high-voltage substations with multiple bays in parallel, similar equipment numbers, nighttime operations, or complex working conditions, this solution significantly improves the accuracy of on-site equipment identification and the consistency of the five-prevention control measures. It also provides a data foundation for subsequent work record keeping, risk tracing, and interlocking status linkage management.

[0129] Figure 2 This is a flowchart illustrating Embodiment Two of the unlocking method for the five-prevention interlocking system in a substation provided in this application. Based on the above embodiments, this application embodiment explains the process where, after the smart five-prevention key unlocks the lock, and the operator locks the electrical equipment, the lock, the smart five-prevention key, and the server interact to determine the verification data required to unlock the next piece of electrical equipment. For example... Figure 2 As shown, the unlocking method for the five-prevention interlock of this substation specifically includes the following steps:

[0130] S201: The smart five-proof key receives the locked identifier sent by the RFID transmitter in the lock through an RFID reader / writer.

[0131] After the smart five-proof key unlocks the lock, staff can operate the electrical equipment. After operation, staff can lock the lock again. Since the lock includes an RFID transmitter, a Hall sensor, and a magnet (the magnet is installed in the bolt), when the Hall sensor detects that the bolt is in the locked state, the lock sends a locked indicator via the RFID transmitter.

[0132] Because the magnet is installed in the bolt, it moves with the bolt. A Hall sensor, installed after the lock is locked, can detect the magnet's position. Therefore, when the lock is locked and the bolt is in the locked position, the magnetic field relationship between the magnet and the Hall sensor changes. The Hall sensor can then detect the magnet, determining that the bolt is in the locked state. Based on this, the Hall sensor outputs a locking status signal. Upon detecting this signal, the lock's internal control circuit drives the RFID transmitter to issue a locked indicator.

[0133] It should be noted that the RFID transmitter can use a low-power RF module, and its transmission frequency band can be selected according to the site environment to ensure stable status reporting capability even under metal obstruction and strong electromagnetic interference. In practical applications, other models of this component can also be selected, and this application embodiment does not limit this. The Hall sensor can be a digital switch-type device, which has a fast response speed and is resistant to mechanical wear, making it suitable for long-term installation inside the lock. In practical applications, other models of this component can also be selected, and this application embodiment does not limit this. The magnet can be a neodymium iron boron permanent magnet, embedded in the middle or end of the lock tongue, so that a stable magnetic field can be formed when the lock tongue is in position to trigger the sensor action. In practical applications, other magnetic materials can also be selected for the magnet, and this application embodiment does not limit this.

[0134] In this step, the smart five-proof key has an RFID reader, so it can receive the locked status signal sent by the RFID transmitter in the lock through the RFID reader.

[0135] Radio frequency identification (RFID) readers are used for contactless information exchange with locks. Their built-in RFID receiving and reading / writing modules can receive locked indicators from the locks. The locked indicator indicates that the lock is in a locked state and serves as the status basis for subsequent verification requests.

[0136] S202: The smart five-proof key will delete the verification data.

[0137] In this step, once the smart five-proof key receives the locked indicator, it means that the operation of the electrical equipment has been completed. Therefore, the verification data needs to be deleted to prevent old verification data from continuing to participate in subsequent judgments.

[0138] S203: The smart five-proof key sends a verification request to the server.

[0139] In this step, after the smart five-proof key deletes the verification data, in order to unlock and operate the next electrical device, it needs to send a verification request to the server. The verification request includes the locked identifier, the target device identifier, and the verification token in the verification data.

[0140] Verification tokens are used to prove the validity of the current verification link and participate in server-side consistency verification.

[0141] S204: After receiving the verification request sent by the smart five-proof key, the server performs verification processing based on the verification request and the identification of the current electrical equipment to be compared, and generates a verification result indicating whether the operation of the current electrical equipment is completed.

[0142] In this step, after the smart five-proof key sends a verification request to the server, the server can receive the verification request and then perform verification processing based on the verification request and the identification of the electrical device to be compared, generating a verification result indicating whether the operation of the current electrical device is completed.

[0143] It should be noted that the server can be deployed in the substation's microcomputer-based five-prevention backend, the station control layer business host, or a dedicated security control host linked to the key management system, for establishing data communication with the smart five-prevention key. The smart five-prevention key receives verification data sent by the server and sends verification requests to the server. Its specific implementation can be a portable field terminal with RFID read / write, data caching, encrypted interaction, and communication forwarding capabilities. Considering the substation application scenario, after completing on-site operation of a certain electrical equipment, operators typically need to return to confirm the equipment status and initiate subsequent verification actions using the smart five-prevention key. At this time, the smart five-prevention key identifies the target equipment, combines it with the locally stored locked identifier and the verification token issued by the server, encapsulates it into a verification request, and sends it to the server.

[0144] Specifically, the verification token is decrypted to obtain the generation data of the token to be compared.

[0145] If the verification request includes a locked identifier, the target device identifier is the same as the device identifier to be compared of the current electrical device, and the token generation data to be compared is the same as the token generation data of the current electrical device, it indicates that the device identity, locking status and token information corresponding to the verification request all meet the requirements, and the current electrical device has completed the operation. Then, a verification result indicating the completion of the operation of the current electrical device is generated.

[0146] If the verification request does not include a locked identifier, the target device identifier is different from the device identifier to be compared of the current electrical device, or the token generation data to be compared is different from the token generation data of the current electrical device, it means that the current electrical device has not completed the operation, and a verification result indicating that the operation of the current electrical device has not been completed is generated.

[0147] It should be noted that, under normal circumstances, the previous verification data of the smart five-proof key is the verification data corresponding to the current electrical device. That is, the target device identifier in the verification data is the identifier of the current electrical device. The current electrical device is the electrical device used as the current verification object of the server, generally the device that should be confirmed to have completed its operation in the device operation sequence. The server will determine the current electrical device sequentially according to the device operation sequence.

[0148] It should be noted that the server can receive verification requests sent by the smart five-proof key via a private wireless network, Bluetooth to gateway, industrial WLAN (Wireless Local Area Network), 4G / 5G dedicated communication link, or wired backhaul interface. The embodiments in this application do not limit the interaction method between the server and the smart five-proof key; it can be determined according to the actual situation.

[0149] It should be noted that, in order to ensure the stability of subsequent processing on the server side, in addition to the locked identifier, target device identifier, and verification token, the verification request can also include the key number, personnel account, timestamp, message sequence number, and message authentication code. After receiving the verification request, the server first performs basic checks on the integrity of the message, the legality of the source, and the validity of the time, and then sends the valid request into the verification process.

[0150] This processing method combines device identification comparison with token data comparison, ensuring that the verification result simultaneously reflects the consistency between the target device's identity on-site and the authorized data in the background. Its working principle is that the verification token is decrypted to generate comparison token data, which is then compared with the token generation data of the current electrical device. The operation is considered complete only if the locked identifier exists and the target device identifier matches. This method reduces the risk of erroneous operations caused by device misidentification, identifier confusion, or token mismatch, and improves the accuracy and reliability of operation completion determination in five-prevention interlocking scenarios.

[0151] Based on the above analysis, this step is crucial for resolving the consistency issues between on-site object identification and sequential control. Instead of simply determining "whether to allow the next step," the server directly compares the target device identifier in the verification request with the device identifier to be compared in the current electrical equipment. It also combines the verification token and the locked identifier to form a multi-dimensional verification link. This ensures that the operation is considered complete only when all three conditions are met simultaneously: "the correct device has indeed arrived on-site," "the current node is indeed the one that should be operated," and "the previous authorization has not been misused." This improves the accuracy of device identification and the rigor of process control in complex substation scenarios.

[0152] It should be noted that the server can subsequently write the verification results into the job process database and associate them with operation logs, personnel behavior logs, and equipment status logs to enable full-process traceability.

[0153] S205: If the verification result indicates that the operation of the current electrical device is completed, and there is a next electrical device in the operation sequence of the current electrical device, the server will take the next electrical device in the operation sequence of the current electrical device as the new current electrical device.

[0154] Equipment operation sequence is used to specify the sequential relationship between the operation of multiple electrical devices. It is usually derived from scheduling instructions, maintenance permit procedures, or standard sequences generated by a five-prevention logic verification system. The next electrical device is used to indicate the device that immediately follows the current electrical device in the equipment operation sequence, and the new current electrical device is used to indicate the device that enters the next verification stage after the current electrical device has completed its operation.

[0155] In this step, after receiving the verification result, the server needs to advance the process status. When the verification result indicates that the operation of the current electrical device is complete, the server determines whether there is still an electrical device following the current one, based on the device operation sequence. If so, the server switches that subsequent device to the new current electrical device.

[0156] In practice, the server can maintain a sequentially arranged linked list, array, task queue, or state machine model of device operations. Each node records the device identifier, device type, operation type, device identifier to be compared, token generation data, etc., of an electrical device. Once the server confirms that the operation of the current electrical device is completed, it can directly move the process pointer to the next electrical device to achieve the switching of the current electrical device.

[0157] Based on the above analysis, this step tightly binds the logical sequence control on the server side with the on-site confirmation completion event. Only after the current device has been confirmed by the triple verification of identity, token and status will the subsequent device be selected as the new current electrical device. This avoids the risk of prematurely releasing the next step due to the assumption that the previous step has been completed in the traditional solution, and makes the advancement of the device operation sequence based on the actual completion.

[0158] S206: The server generates a new verification token based on the new token generation data of the current electrical device.

[0159] In this step, after the server has identified the next electrical device as the new current electrical device, it is necessary to generate new verification credentials, i.e., a new verification token, for the subsequent on-site identification and unlocking process.

[0160] The new verification token is used to verify the new current electrical equipment, and its generation is based on the token generation data corresponding to the new current electrical equipment.

[0161] It should be noted that the token generation data is the basic data used to generate the verification token. This data can include the device identification information of the new, current electrical equipment, as well as new step numbers, current task identifiers, generation time, expiration time, key identifiers, personnel identification, and security random numbers. This application embodiment does not limit the token generation data; it can be determined according to the actual situation.

[0162] The server encrypts the token generation data to obtain a new verification token, which can represent the uniqueness of the new current electrical device.

[0163] It should be noted that the encryption algorithm used can be a symmetric key algorithm, an asymmetric signature algorithm, a hash-based message authentication algorithm, or a combination thereof to form a new verification token. This application does not limit the encryption method; it can be determined according to the actual situation.

[0164] Based on the above analysis, this step ensures that each round of on-site verification corresponds to a new token that is only valid for the next target device. Binding the device identity at the token level helps to prevent abstract permissions from being misused on the wrong devices and further strengthens the precise association between server sequence control and on-site unlocking objects.

[0165] S207: The server generates verification data and sends it to the smart five-proof key based on the new current electrical equipment's device identifier and the new verification token.

[0166] In this step, the new device identifier of the current electrical equipment to be compared is used to compare with the new target device identifier in subsequent verification stages, while the new verification token is used to verify the authenticity of the next round of requests and the device association. The verification data is used to send verification information to the smart five-proof key, the core content of which is the new device identifier of the current electrical equipment to be compared and the new verification token. The server combines and encapsulates the two to form a data payload for the smart five-proof key to subsequently perform on-site identification, unlocking preparation, and re-initiating verification requests.

[0167] Specifically, after generating a new verification token, the server writes the new current electrical device's identification for comparison and the new verification token into the verification data. The server then sends the verification data through the communication link established with the smart five-proof key.

[0168] It should be noted that the service can also write necessary auxiliary information into the verification data. The auxiliary information may include new device type, token validity period, message version number, encryption verification code and exception handling prompt code, etc. This application embodiment does not limit the auxiliary information and can be determined according to the actual situation.

[0169] It should be noted that, in terms of the sending method, the server can use real-time push, request-response return, or job session keep-alive channel for sending; if the sending fails, the server can retry, switch to a backup channel, or synchronize the status to the key management base station so that the smart five-proof key can be retrieved when reconnecting to the network.

[0170] To improve reliability, after generating verification data, the server can first perform message signing or integrity verification, and then record the sending time, target key number, and sending result. If the smart five-proof key returns a receipt confirmation, the server will set the new current electrical device to an authorized pending execution state; if no confirmation is returned, the server can remain in a pending issuance state to prevent the use of expired data on site.

[0171] Based on the above analysis, this step enables the new current electrical equipment's device identifier to be compared and the new verification token to be issued as a whole to the smart five-proof key. This establishes a closed-loop verification link between the server, the smart key, and the on-site electrical equipment, ensuring that subsequent unlocking actions are based on the premise that the "unique target device specified by the server" and the "device actually identified on-site." This effectively reduces the risk of incorrect intervals, incorrect numbering, and misunderstanding of the lock based on abstract permissions.

[0172] The server uses the locked identifier, target device identifier, and verification token sent by the smart five-prevention key as input to perform a device-specific authenticity verification on the current process node. Only after confirming that the current electrical device has actually completed the operation does it regenerate a corresponding verification token and verification data for the next electrical device and send them to the smart five-prevention key. This tightly couples device operation sequence control, on-site device identification, and unlocking authorization credentials. This allows on-site personnel to achieve accurate matching based on the unique target device identifier sent by the server and the on-site identification result, even when multiple devices are spaced out, have similar device numbers, or have limited inspection conditions. This ensures both the rigor of the sequential process and the accuracy of the operated object, thereby improving the safety and reliability of the substation's five-prevention interlocking and unlocking process.

[0173] S208: The intelligent five-proof key receives and stores the verification data sent by the server.

[0174] In this step, the server sends the verification data to the Smart Five-Proof Key, which then receives and stores the verification data.

[0175] The device identifier to be compared in the verification data serves as a reference for the next on-site arrival identification, while the verification token is the credential that must be carried when submitting a verification request to the server in the next round. When the operator arrives at the next device, the smart five-proof key reads the on-site tag through the RFID reader to obtain the new target device identifier and compares it with the device identifier to be compared in the verification data. If they are the same, unlocking is allowed; if they are different, unlocking is not allowed and a message "Not currently allowed to operate device" is displayed, thereby reducing invalid communication and erroneous operation attempts.

[0176] In this way, the on-site lock status, target device identity, and server verification results can form a closed-loop correspondence, thereby updating the authorization information after the lock tongue is truly closed, and avoiding the misuse of old data.

[0177] It should be noted that if the verification result indicates that the operation of the current electrical device is complete, and there is no next electrical device in the device operation sequence, it means that the current electrical device is the last device and the operation of this electrical device has been completed. The device sequential operation has been completed, and the server sends an operation end command to the smart five-proof key.

[0178] After receiving the operation end command sent by the server, the smart five-proof key outputs an operation end message to prompt the staff to end the operation of the electrical equipment.

[0179] It should be noted that the intelligent five-proof key can output the operation completion message in the following ways: through a display screen, indicator light, buzzer, or voice broadcast module. If the intelligent five-proof key is equipped with an LCD display unit, it can display "Operation Complete" or a completion prompt corresponding to the current task on the screen; if it is equipped with an audio-visual prompt component, the prompt output can be completed through red and green indicator light switching, short buzzer, or preset voice broadcast. The display screen can be a low-power LCD screen or an OLED (Organic Light-Emitting Diode) display screen, which has the advantages of clear display and fast response, and is still easy to identify during night patrols or in strong electromagnetic environments. In practical applications, other models of this component can also be selected, and this application embodiment does not limit this.

[0180] After confirming the completion of the current operation process, the server sends an operation completion command to the smart five-proof key. Upon receiving this command, the smart five-proof key terminates its current session and outputs an operation completion message to notify the on-site operator that the task has been completed. This method ensures that the smart five-proof key remains consistent with the backend process control, preventing operators from continuing invalid readings or making erroneous operations after the work is completed. It also facilitates closed-loop management of a complete operation by the system. This implementation method ensures timely and clear feedback of operation completion information to on-site personnel, reducing repetitive operations and misjudgments caused by unclear operation completion status, improving the integrity and controllability of the substation's five-proof interlocking and unlocking process, and enhancing the consistency between the server control logic and the on-site terminal prompts.

[0181] It should be noted that if the verification result indicates that the operation of the current electrical device has not been completed, the next electrical device cannot be operated, and the server will send a locking command to the smart five-proof key.

[0182] After receiving the locking command from the server, the smart five-proof key locks itself, thus preventing operators from continuing to attempt to open locks that should not be opened.

[0183] The smart five-proof key can be locked in several ways, including turning off the RFID reader, refusing to unlock, etc. It can also display "Locked" on the screen. Once locked, the key retains only basic communication capabilities with the server to receive unlocking commands later.

[0184] When it is determined that the operation of the current electrical equipment has not been completed, the intelligent five-proof key can be locked to reduce the possibility of accidental unlocking and enhance the overall safety and controllability of the substation anti-misoperation interlocking system.

[0185] The unlocking method for the five-prevention interlocking system in a substation provided in this embodiment involves the lock confirming the latch is in position via a Hall sensor and triggering the RFID transmitter to report the status. The smart five-prevention key then deletes the old verification data and requests new verification data from the server. The server then performs a consistency verification by combining the locked identifier, the target device identifier, and the verification token, and returns the new verification data. Since the verification request directly includes the lock's locking status and the target device's identity, it enables synchronized updates of the field status and backend permissions, reducing the possibility of misjudgments and incorrect authorizations.

[0186] The lock's locking status can be automatically detected and reported, and verification data can be updated promptly after a status change, thereby improving the consistency of status and the accuracy of device identification during the anti-mislocking process. Because the verification request carries a locked identifier and a verification token, the server can effectively confirm the current operation chain, reducing the risk of misoperation caused by residual old permissions, while enhancing the data closed-loop management capability between the smart five-proof key and the server.

[0187] Figure 3 This is a flowchart illustrating Embodiment 3 of the substation five-prevention interlocking unlocking method provided in this application. Based on the above embodiments, this embodiment describes the process of generating verification data and sending it to the smart five-prevention key for the first electrical device in the equipment operation sequence before the server receives the verification request sent by the smart five-prevention key. Figure 3 As shown, the unlocking method for the five-prevention interlock of this substation specifically includes the following steps:

[0188] S301: If the current electrical device is the first electrical device in the device operation sequence, then generate a verification token based on the token generation data of the current electrical device.

[0189] In this step, the device operation sequence refers to the order in which multiple electrical devices, pre-configured by the server, operate. When the current electrical device is the first device in the operation sequence, it indicates that it is at the beginning of the entire operation. To initiate the process, verification data needs to be generated and sent to the smart five-proof key. This requires the server to first generate a verification token based on the token of the current electrical device.

[0190] It should be noted that the method of generating the verification token in this step is similar to the implementation method of step S206 in Embodiment 2, and will not be described again here.

[0191] S302: Generate verification data and send it to the smart five-proof key based on the identification of the device to be compared and the verification token of the current electrical equipment.

[0192] It should be noted that the implementation of this step is similar to that of step S207 in Embodiment 2, and will not be repeated here.

[0193] After receiving the verification data, the smart five-proof key stores it so that it can later determine whether it can unlock the lock.

[0194] This solution establishes a binding relationship between the device identifier and the verification token at the first electrical device. This allows the smart five-proof key to obtain initial verification information corresponding to the current electrical device when entering the entire operation chain, thus ensuring that subsequent verification requests have a clear object source and identity basis. Since the verification data carries both the device identifier to be compared and the verification token, on-site verification no longer relies on general permissions but directly verifies the specific electrical device. Therefore, it reduces the risks of misidentification or mis-release of the first device and errors in the starting point of the device sequence.

[0195] The substation five-prevention interlocking unlocking method provided in this embodiment allows the server to complete the initialization verification preparation of the first device before receiving the verification request from the smart five-prevention key, forming the first round of verification data that matches the device operation sequence, and accurately sending it to the smart five-prevention key. This enhances the correlation between the first electrical device and subsequent verification links, improves the accuracy of device identification and the reliability of the first round of authorization, and thus improves the overall security and anti-misoperation capability of the substation five-prevention interlocking unlocking process.

[0196] The following are embodiments of the apparatus described in this application, which can be used to execute the embodiments of the method described in this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the method described in this application.

[0197] Figure 4 This is a schematic diagram of the structure of an embodiment 1 of the unlocking device for the five-prevention interlocking system of a substation provided in this application; this device can be integrated into the smart five-prevention key in the above method embodiment, or it can be implemented through the smart five-prevention key in the above method embodiment. Figure 4 As shown, the unlocking device 40 of the five-prevention interlocking system of the substation includes:

[0198] The acquisition module 41 is used to acquire the target device identifier in the RFID tag when the RFID reader detects the RFID tag in the electrical equipment;

[0199] Processing module 42 is used to determine whether it has stored verification data. The verification data is generated and sent to the smart five-proof key by the server after the operation of the previous electrical device in the device operation sequence is completed, or after the electrical device is determined to be the first device in the operation sequence.

[0200] The unlocking module 43 is used to determine whether to unlock the lock based on the device identifier to be compared and the target device identifier in the verification data if it has stored verification data.

[0201] Furthermore, the unlocking module 43 is specifically used for:

[0202] If the identification of the device to be compared is the same as that of the target device, then the lock is unlocked;

[0203] If the identifier of the device to be compared is different from the identifier of the target device, the lock will not be unlocked.

[0204] Furthermore, the acquisition module 41 is also used to receive a locked identifier sent by the RFID transmitter in the lock via the RFID reader / writer;

[0205] Processing module 42 is also used to delete the verification data;

[0206] Sending module 44 is used to send a verification request to the server. The verification request includes a locked identifier, a target device identifier, and a verification token in the verification data.

[0207] The acquisition module 41 is also used to receive and store the verification data sent by the server;

[0208] The lock includes an RFID transmitter, a Hall sensor, and a magnet. The magnet is installed in the bolt of the lock. When the Hall sensor detects that the bolt is in the locked state, the lock sends a locked indicator through the RFID transmitter.

[0209] Furthermore, the acquisition module 41 is also used to receive an operation end command sent by the server;

[0210] The processing module 42 is also used to output an operation end message.

[0211] Furthermore, the acquisition module 41 is also used to receive a locking command sent by the server;

[0212] The processing module 42 is also used to lock the smart five-proof key.

[0213] The unlocking device for the five-prevention interlocking of the substation provided in this embodiment is used to execute the technical solution of the intelligent five-prevention key in any of the aforementioned method embodiments. Its implementation principle and technical effect are similar, and will not be described again here.

[0214] Figure 5 This is a schematic diagram of the structure of a second embodiment of the unlocking device for the five-prevention interlocking system of a substation provided in this application; this device can be integrated into the server in the above method embodiments, or it can be implemented through the server in the above method embodiments. Figure 5 As shown, the unlocking device 50 of the five-prevention interlocking system of the substation includes:

[0215] The receiving module 51 is used to receive the verification request sent by the smart five-proof key. The verification request includes a locked identifier, a target device identifier, and a verification token.

[0216] Processing module 52 is used for:

[0217] Based on the verification request and the device identifier to be compared with the current electrical equipment, the verification process is performed to generate a verification result indicating whether the operation of the current electrical equipment has been completed;

[0218] If the verification result indicates that the operation of the current electrical device is completed, and there is a next electrical device in the operation sequence of the current electrical device, then the next electrical device in the operation sequence of the current electrical device will be taken as the new current electrical device;

[0219] Generate a new verification token based on the new token generation data for the current electrical equipment;

[0220] The sending module 53 is used to generate verification data and send it to the smart five-proof key based on the new current electrical equipment's device identifier to be compared and the new verification token.

[0221] Furthermore, the processing module 52 is specifically used for:

[0222] Decrypt the verification token to obtain the generation data of the token to be compared;

[0223] If the verification request includes a locked identifier, the target device identifier is the same as the device identifier to be compared of the current electrical device, and the token generation data to be compared is the same as the token generation data of the current electrical device, then a verification result indicating that the operation of the current electrical device is completed is generated.

[0224] If the verification request does not include a locked identifier, the target device identifier is different from the device identifier to be compared of the current electrical device, or the token generation data to be compared is different from the token generation data of the current electrical device, then a verification result indicating that the operation of the current electrical device is incomplete will be generated.

[0225] Furthermore, the sending module 53 is also used for:

[0226] If the verification result indicates that the operation of the current electrical device is complete, and there is no next electrical device in the operation sequence, then an operation end command is sent to the smart five-proof key.

[0227] Furthermore, the sending module 53 is also used for:

[0228] If the verification result indicates that the operation of the current electrical equipment has not been completed, a locking command is sent to the smart five-proof key.

[0229] Furthermore, the processing module 52 is also used to: if the current electrical device is the first electrical device in the device operation sequence, generate a verification token based on the token generation data of the current electrical device;

[0230] The sending module 53 is also used to: generate verification data and send it to the smart five-proof key based on the device identifier to be compared and the verification token of the current electrical equipment.

[0231] The unlocking device for the five-prevention interlocking of the substation provided in this embodiment is used to execute the technical solution of the server in any of the aforementioned method embodiments. Its implementation principle and technical effect are similar, and will not be described again here.

[0232] The technical solution of the lock is described below through Embodiment 3 of the unlocking device for the five-prevention interlocking system of the substation provided in this application.

[0233] The device can be integrated into the lock in the above method embodiments, or it can be implemented through the lock in the above method embodiments.

[0234] The unlocking device of the five-prevention interlocking system in the substation is used to send a locked mark through a radio frequency identification transmitter when the Hall sensor detects that the lock tongue is in the locked state.

[0235] The substation five-prevention interlocking unlocking device provided in this embodiment uses a Hall sensor to detect the position of the bolt, directly determining whether the lock is currently locked, instead of relying solely on manual observation or background estimation. When the bolt is detected as locked, a radio frequency identification transmitter sends a locked identifier, allowing the smart five-prevention key to automatically acquire this lock status, thus converting the lock's actual physical state into system-recognizable status information. This enables a status linkage between the server, the smart five-prevention key, and the lock, ensuring that subsequent unlocking decisions are based on the actual locking state. This improves the timeliness and accuracy of five-prevention interlocking status confirmation, thereby reducing the risk of mis-locking and misoperation due to misjudgment of status.

[0236] Figure 6 This is a structural diagram of a smart five-proof key provided in this application. Figure 6 As shown, the smart five-proof key 60 includes:

[0237] Processor 61, memory 62, communication interface 63, and radio frequency identification reader 64;

[0238] Memory 62 is used to store executable instructions of processor 61;

[0239] The processor 61 is configured to execute the technical solution of the smart five-proof key in any of the foregoing method embodiments by executing executable instructions.

[0240] Optionally, the memory 62 can be either standalone or integrated with the processor 61.

[0241] Optionally, when the memory 62 is a device independent of the processor 61, the smart five-proof key 60 may also include:

[0242] Bus 65, memory 62, communication interface 63 and RFID reader 64 are connected to processor 61 through bus 65 and complete mutual communication. Communication interface 63 is used to communicate with other devices.

[0243] Optionally, the communication interface 63 can be implemented using a transceiver. The communication interface is used to enable communication between the database access device and other devices (e.g., clients, read-write databases, and read-only databases). The memory may include random access memory (RAM) and may also include non-volatile memory, such as at least one disk drive.

[0244] Bus 65 can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of representation, only one thick line is used in the diagram, but this does not indicate that there is only one bus or one type of bus.

[0245] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0246] The intelligent five-proof key is used to execute the technical solution of the intelligent five-proof key in any of the aforementioned method embodiments. Its implementation principle and technical effect are similar, and will not be repeated here.

[0247] Figure 7 This is a schematic diagram of the structure of a server provided in this application. Figure 7 As shown, the server 70 includes:

[0248] Processor 71, memory 72, and communication interface 73;

[0249] Memory 72 is used to store executable instructions of processor 71;

[0250] The processor 71 is configured to execute the server's technical solution in any of the foregoing method embodiments by executing executable instructions.

[0251] Optionally, the memory 72 can be either standalone or integrated with the processor 71.

[0252] Optionally, when the memory 72 is a device independent of the processor 71, the server 70 may further include:

[0253] Bus 74, memory 72 and communication interface 73 are connected to processor 71 through bus 74 and complete communication with each other. Communication interface 73 is used to communicate with other devices.

[0254] Optionally, the communication interface 73 can be implemented using a transceiver. The communication interface is used to enable communication between the database access device and other devices (e.g., clients, read-write databases, and read-only databases). The memory may include random access memory (RAM) and may also include non-volatile memory, such as at least one disk drive.

[0255] Bus 74 can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of representation, only one thick line is used in the diagram, but this does not indicate that there is only one bus or one type of bus.

[0256] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0257] The server is used to execute the technical solution of the server in any of the aforementioned method embodiments. Its implementation principle and technical effect are similar, and will not be described again here.

[0258] Figure 8 This is a structural schematic diagram of a lock provided in this application. Figure 8 As shown, the lock 80 includes:

[0259] Processor 81, memory 82, radio frequency identification transmitter 83, Hall sensor 84, magnet 85 and locking tongue 86.

[0260] Magnet 85 is installed in latch 86.

[0261] Memory 82 is used to store executable instructions of processor 81;

[0262] The processor 81 is configured to execute the technical solution of the lock in any of the foregoing method embodiments by executing executable instructions.

[0263] Optionally, the memory 82 can be either standalone or integrated with the processor 81.

[0264] Optionally, when the memory 82 is a device independent of the processor 81, the latch 80 may further include:

[0265] Bus 87, memory 82, radio frequency identification transmitter 83 and Hall sensor 84 are connected to processor 81 through bus 87 and complete mutual communication.

[0266] Bus 87 can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of representation, only one thick line is used in the diagram, but this does not indicate that there is only one bus or one type of bus.

[0267] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0268] This lock is used to implement the technical solution of the lock in any of the aforementioned method embodiments. By placing a magnet in the bolt and using a Hall sensor to sense changes in the magnetic field, it can directly detect whether the bolt is in the locked position, thus using the actual mechanical state of the bolt as the basis for judgment. After confirming that the bolt is in the locked state, the processor controls the RFID transmitter to send a locked identifier, enabling the lock status to be identified by an external smart key, thereby avoiding errors caused by relying solely on manual observation to determine the locking status. Therefore, this solution can improve the accuracy and real-time performance of lock status feedback in complex substation equipment environments, enabling closer coordination between on-site equipment identification, locking status confirmation, and operational process control.

[0269] This application also provides a readable storage medium storing a computer program thereon. When the computer program is executed by a processor, it implements the technical solutions provided by the smart five-proof key, server, or lock in any of the aforementioned method embodiments.

[0270] This application also provides a computer program product, including a computer program, which, when executed by a processor, is used to implement the technical solutions provided by the smart five-proof key, server, or lock in any of the foregoing method embodiments.

[0271] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0272] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A method for unlocking a five-prevention interlocking system in a substation, characterized in that, Applied to a smart five-proof key, the smart five-proof key includes a radio frequency identification reader / writer, and the method includes: When the RFID reader detects an RFID tag in an electrical device, it acquires the target device identifier from the RFID tag. The system determines whether it has stored verification data. The verification data is generated and sent to the smart five-proof key by the server after determining that the operation of the previous electrical device in the operation sequence has been completed, or after determining that the electrical device is the first device in the operation sequence. If the device itself stores verification data, it determines whether to unlock the lock based on the device identifier to be compared and the target device identifier in the verification data.

2. The method according to claim 1, characterized in that, The step of determining whether to unlock the lock based on the device identifier to be compared and the target device identifier in the verification data includes: If the identifier of the device to be compared is the same as the identifier of the target device, then the lock is unlocked; If the device identifier to be compared is different from the target device identifier, the lock will not be unlocked.

3. The method according to claim 1 or 2, characterized in that, The method further includes: The RFID reader receives a locked identifier sent by the RFID transmitter in the lock. Delete the verification data; Send a verification request to the server, the verification request including the locked identifier, the target device identifier, and the verification token in the verification data; Receive and store the verification data sent by the server; The lock includes a radio frequency identification transmitter, a Hall sensor, and a magnet. The magnet is installed in the bolt of the lock. When the lock detects that the bolt is in a locked state through the Hall sensor, it sends a locked indicator through the radio frequency identification transmitter.

4. The method according to claim 3, characterized in that, The method further includes: Receive the operation termination command sent by the server; Output an operation completion message.

5. The method according to claim 3, characterized in that, The method further includes: Receive the locking command sent by the server; Lock the smart five-proof key.

6. A method for unlocking a five-prevention interlocking system in a substation, characterized in that, Applied to servers, including: Receive a verification request sent by the smart five-proof key, the verification request including a locked identifier, a target device identifier, and a verification token; Based on the verification request and the device identifier to be compared with the current electrical equipment, a verification process is performed to generate a verification result indicating whether the operation of the current electrical equipment is completed; If the verification result indicates that the operation of the current electrical device is completed, and there is a next electrical device in the operation sequence of the current electrical device, then the next electrical device in the operation sequence of the current electrical device is taken as the new current electrical device; Generate a new verification token based on the new token generation data of the current electrical device; Based on the new current electrical equipment's identification for comparison and the new verification token, verification data is generated and sent to the smart five-proof key.

7. The method according to claim 6, characterized in that, The step of performing verification processing based on the verification request and the device identifier to be compared with the current electrical equipment, and generating a verification result indicating whether the operation of the current electrical equipment is completed, includes: The verification token is decrypted to obtain the generation data of the token to be compared; If the verification request includes a locked identifier, the target device identifier is the same as the device identifier to be compared of the current electrical device, and the token generation data to be compared is the same as the token generation data of the current electrical device, then a verification result indicating that the operation of the current electrical device is completed is generated; If the verification request does not include a locked identifier, the target device identifier is different from the device identifier to be compared of the current electrical device, or the token generation data to be compared is different from the token generation data of the current electrical device, then a verification result indicating that the operation of the current electrical device is incomplete is generated.

8. The method according to claim 6, characterized in that, The method further includes: If the verification result indicates that the operation of the current electrical device is complete, and there is no next electrical device in the operation sequence of the current electrical device, then an operation end command is sent to the smart five-proof key.

9. The method according to claim 6, characterized in that, The method further includes: If the verification result indicates that the operation of the current electrical equipment has not been completed, a locking command is sent to the smart five-proof key.

10. The method according to any one of claims 6 to 9, characterized in that, Before receiving the verification request sent by the smart five-proof key, the method further includes: If the current electrical device is the first electrical device in the device operation sequence, a verification token is generated based on the token generation data of the current electrical device; Based on the device identifier to be compared of the current electrical equipment and the verification token, verification data is generated and sent to the smart five-proof key.

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