Intelligent lock control system and method for transformer substation protection screen cabinet

Abstract

The invention relates to an intelligent lock control method and system for a transformer substation protection screen cabinet. An unlocking application for an intelligent lock of a target protection screen cabinet is sent to an authorization management platform through a mobile authorization terminal; if the effective job task information corresponding to the unlocking application exists, the application is accepted; the intelligent lock collects lock body state information through a multi-mode sensing module of the intelligent lock and uploads the information to the authorization management platform; the authorization management platform obtains the real-time operation state of the relay protection equipment associated with the target protection screen cabinet from the transformer substation monitoring system and then carries out dynamic safety risk assessment according to a preset safety locking logic rule base, and the mobile authorization terminal sends a dynamic authorization instruction to the target intelligent lock after receiving the dynamic authorization instruction; after the intelligent lock verifies the dynamic authorization instruction, unlocking operation is executed; and after the operation is finished, the user selects whether to close the screen cabinet door according to the lock body state. According to the invention, extreme risks such as mistakenly entering an operation interval are effectively prevented, and passive response is changed into active early warning.

Description

Technical Field

[0001] This invention relates to the field of power system safety operation and maintenance technology, specifically to an intelligent interlocking control system and method for substation protection cabinets. Background Technology

[0002] Substation protection cabinets are the core physical barrier for the safe operation of the power grid. The secondary equipment installed inside, such as relay protection, measurement and control, and communication equipment, is crucial for ensuring the stability of the main grid and isolating faults. Currently, protection cabinets in substations are generally managed using traditional mechanical locks, which have inherent defects such as strong key universality, reliance on manual management, and lack of records for opening and closing locks. This makes it difficult to effectively trace responsibility and prevent unplanned operations, and has become a weak link in the safe operation and maintenance of substations.

[0003] To improve security management, smart lock technology is increasingly being applied in this field. Existing technologies include electronic lock solutions based on near-field communication, biometrics, or mobile applications. These solutions typically use a central management platform for access control and authentication, achieving electronic keys and logged operations, thus mitigating the management chaos associated with mechanical keys to some extent.

[0004] However, existing intelligent lock control technology still has significant limitations and cannot meet the high standards required for safe power production. Specifically, these limitations include: the lack of linkage between operator identity and authorization authentication and the operating status of the relay protection system; the fact that most existing locks operate in a passive "command-execution" mode, making it impossible to diagnose the health status of the lock body in real time; and the weak monitoring capability of the system during operation, making it unable to effectively intervene in abnormal situations. These are the shortcomings of existing technology.

[0005] In view of this, it is very necessary to provide an intelligent locking and control system and method for substation protection cabinets to solve the above-mentioned defects in the prior art. Summary of the Invention

[0006] The purpose of this invention is to address the deficiencies of the existing technology by providing a design and method for an intelligent locking and control system for substation protection cabinets, thereby solving the aforementioned technical problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: In a first aspect, the present invention provides an intelligent interlocking control method for a substation protection cabinet, comprising the following steps: Step S1, the step of sending the unlock request, in which: The mobile authorization terminal sends an unlocking request to the authorization management platform for the smart lock on the target protection cabinet.

[0008] Step S2, querying task information and collecting lock body status, includes the following steps: The authorization management platform queries the power production management system. If there is valid work task information corresponding to the unlocking application, the application will be accepted. Smart locks collect lock body status information through their multimodal sensing submodule and upload the information to the authorization management platform; Step S3, obtaining the real-time operating status of the relay protection equipment, in which: The authorized management platform obtains the real-time operating status of the relay protection equipment associated with the target protection panel from the substation monitoring system.

[0009] Step S4, dynamic security risk assessment and instruction issuance, in which: The authorization management platform performs dynamic security risk assessments based on the real-time operating status of relay protection equipment and the received lock body status information, according to a pre-set security interlocking logic rule base. If the risk assessment is successful, a dynamic authorization instruction will be generated and sent to the mobile authorization terminal. If the risk assessment fails, an alarm message will be sent to the mobile authorized terminal; Step S5, sending dynamic authorization instructions to the smart lock, in which: After receiving the dynamic authorization instruction, the mobile authorization terminal sends it to the target smart lock; Step S6, verifying the dynamic authorization command and unlocking the door, in which: After the smart lock verifies the dynamic authorization command, it will perform the unlocking operation. Step S7, the process of handling the status of the cabinet door and providing information feedback after the operation is completed, includes: After the operation is completed, the user can choose whether to close the cabinet door based on the lock body status; Furthermore, step S1 specifically includes: The mobile authorization terminal is used to send information to the authorization management platform and to receive and display dynamic authorization instructions; The smart lock is installed on the protection cabinet and includes a main control MCU, a lock body drive mechanism, a multimodal sensing submodule and a communication submodule; The authorization management platform includes a task interface service, a dynamic key generation engine, a security policy engine, and a device status interface service. Furthermore, the security policy engine sets up a security interlocking logic rule base; the device status interface service is used to communicate with the substation monitoring system to obtain the status of relay protection equipment.

[0010] Furthermore, step S2 specifically includes: The lock body status information includes reported lock damage information and mechanism jamming fault information; the effective work task information includes the estimated work duration. The multimodal sensing submodule includes at least a magnetic induction sensor, an angle sensor, and a micro switch; Furthermore, the magnetic induction sensor is used to determine the magnetic induction signal of the relative position between the door and the bolt; the angle sensor is used to accurately determine the angle encoding signal of the bolt rotation angle; and the micro switch is used to detect the micro switch trigger signal of whether the bolt is subjected to effective pressure. Furthermore, the multimodal sensing submodule also includes a vibration sensor. The vibration sensor monitors whether the smart lock is subjected to abnormal impact or vibration. When the vibration amplitude exceeds the threshold, it immediately triggers a forced demolition alarm and reports it.

[0011] Step S2, by linking with the work permit system, ensures that "no work can start without a permit," thus preventing unplanned operations from the source. At the same time, real-time collection of lock body status provides crucial local physical security data for subsequent risk assessment.

[0012] Furthermore, step S3 specifically includes: The real-time operating status of the relay protection equipment is one or more of the following: the status of the protection device maintenance pressure plate, the status of the protection function soft pressure plate, and the device alarm signal. Furthermore, step S4 specifically includes: The pre-defined security interlocking logic rule base includes: When the real-time operating status of the relay protection device meets the first preset condition, the forced blocking strategy is triggered and the risk assessment result is not passed. Furthermore, the first preset condition includes the protection device maintenance pressure plate associated with the target cabinet being in the engaged state, or the protection function soft pressure plate being in the disengaged state, or the device having a serious alarm signal. Furthermore, when the lock body status information meets the second preset condition, the early warning locking strategy is triggered, and the risk assessment result is determined by the staff. Furthermore, the second preset condition includes the lock reporting a tampering alarm, or a mechanism jamming fault warning, or a historical locking failure record; The rule base defines clear decision-making logic. The mandatory interlocking strategy implements a "one-vote veto" for the highest risk state of the power grid, ensuring absolute safety. The early warning interlocking strategy flexibly handles the risks of the interlocking device itself and leaves the decision to human decision-making, reflecting the hierarchical and intelligent nature of the system's decision-making. Step S4 achieves a leap from simple "identity authentication" to comprehensive "risk warning" through the fusion of multi-source information and intelligent rule judgment, making the decision more scientific and secure; the multi-source information includes power grid status and lock status.

[0013] Furthermore, step S6 specifically includes: After the target smart lock is successfully unlocked, the authorization management platform starts to count the cumulative operation time. If the cumulative operation time is greater than the expected operation time, an alarm is triggered and an operation status feedback instruction is sent to the mobile authorization terminal. If the mobile authorization terminal reports that the operation has ended, a locking command is executed on the target smart lock.

[0014] In this way, full monitoring and overtime management of the operation process are achieved, which can promptly detect and intervene in abnormal operations that have not been completed for a long time, prevent cabinet doors from being left open for a long time due to personnel forgetfulness or accidents, and further improve the level of precision in safety management.

[0015] Furthermore, step S7 specifically includes: If the user closes the cabinet door and sends a work completion application to the authorized management platform, the smart lock obtains the cabinet door status through the multimodal sensing submodule; If the status is closed, then the operation is considered complete. If it is not turned off, an alarm message will be sent to the mobile authorized terminal; If the user does not close the cabinet door, send the latest status information of the lock body and the operation completion application to the authorized management platform.

[0016] Step S7 establishes a confirmation and closed-loop management mechanism for the completion of operations. Through mandatory status feedback, it ensures that the cabinet door is restored to a safe physical state after the operation, effectively solving the historical problem of "door not being closed properly". At the same time, it provides a channel for flexible handling in special circumstances, taking into account both safety and practicality.

[0017] Secondly, the present invention also provides an intelligent lock control system for substation protection cabinets, including a module for sending unlocking applications, a module for querying task information and collecting lock body status, a module for obtaining real-time operating status of relay protection equipment, a module for dynamic safety risk assessment and instruction issuance, a module for sending dynamic authorization instructions, a module for verifying dynamic authorization instructions and unlocking, and a module for cabinet door status processing and information feedback. The module for sending unlock requests includes: The mobile authorization terminal sends an unlocking request to the authorization management platform for the smart lock on the target protection cabinet.

[0018] The module for querying task information and collecting lock body status includes: The authorization management platform queries the power production management system. If there is valid work task information corresponding to the unlocking application, the application will be accepted. Smart locks collect lock body status information through their multimodal sensing submodule and upload the information to the authorization management platform; The module for obtaining the real-time operating status of relay protection equipment includes: The authorized management platform obtains the real-time operating status of the relay protection equipment associated with the target protection panel from the substation monitoring system.

[0019] The dynamic security risk assessment and instruction issuance module, in which: The authorization management platform performs dynamic security risk assessments based on the real-time operating status of relay protection equipment and the received lock body status information, according to a pre-set security interlocking logic rule base. If the risk assessment is successful, a dynamic authorization instruction will be generated and sent to the mobile authorization terminal. If the risk assessment fails, an alarm message will be sent to the mobile authorized terminal; The module for sending dynamic authorization instructions includes: After receiving the dynamic authorization instruction, the mobile authorization terminal sends it to the target smart lock; The module for verifying dynamic authorization commands and unlocking includes: After the smart lock verifies the dynamic authorization command, it will perform the unlocking operation. The cabinet door status processing and information feedback module includes: After the operation is completed, the user can choose whether to close the cabinet door based on the lock body status; Furthermore, the module for sending the unlock request specifically includes: The mobile authorization terminal is used to send information to the authorization management platform and to receive and display dynamic authorization instructions; The smart lock is installed on the protection cabinet and includes a main control MCU, a lock body drive mechanism, a multimodal sensing submodule and a communication submodule; The authorization management platform includes a task interface service, a dynamic key generation engine, a security policy engine, and a device status interface service. Furthermore, the security policy engine sets up a security interlocking logic rule base; the device status interface service is used to communicate with the substation monitoring system to obtain the status of relay protection equipment.

[0020] Furthermore, the module for querying task information and collecting lock body status specifically includes: The lock body status information includes reported lock damage information and mechanism jamming fault information; the effective work task information includes the estimated work duration. The multimodal sensing submodule includes at least a magnetic induction sensor, an angle sensor, and a micro switch; Furthermore, the magnetic induction sensor is used to determine the magnetic induction signal of the relative position between the door and the bolt; the angle sensor is used to accurately determine the angle encoding signal of the bolt rotation angle; and the micro switch is used to detect the micro switch trigger signal of whether the bolt is subjected to effective pressure. Furthermore, the multimodal sensing submodule also includes a vibration sensor. The vibration sensor monitors whether the smart lock is subjected to abnormal impact or vibration. When the vibration amplitude exceeds the threshold, it immediately triggers a forced demolition alarm and reports it.

[0021] The module for querying task information and collecting lock body status, in conjunction with the work ticket system, ensures "no work without a ticket," eliminating unplanned operations from the source. At the same time, the real-time collection of lock body status provides crucial local physical security data for subsequent risk assessment.

[0022] Furthermore, the module for obtaining the real-time operating status of the relay protection equipment specifically includes: The real-time operating status of the relay protection equipment is one or more of the following: the status of the protection device maintenance pressure plate, the status of the protection function soft pressure plate, and the device alarm signal. Furthermore, the dynamic security risk assessment and instruction issuance module specifically includes: The pre-defined security interlocking logic rule base includes: When the real-time operating status of the relay protection device meets the first preset condition, the forced blocking strategy is triggered and the risk assessment result is not passed. Furthermore, the first preset condition includes the protection device maintenance pressure plate associated with the target cabinet being in the engaged state, or the protection function soft pressure plate being in the disengaged state, or the device having a serious alarm signal. Furthermore, when the lock body status information meets the second preset condition, the early warning locking strategy is triggered, and the risk assessment result is determined by the staff. Furthermore, the second preset condition includes the lock reporting a tampering alarm, or a mechanism jamming fault warning, or a historical locking failure record; The rule base defines clear decision-making logic. The mandatory interlocking strategy implements a "one-vote veto" for the highest risk state of the power grid, ensuring absolute safety. The early warning interlocking strategy flexibly handles the risks of the interlocking device itself and leaves the decision to human decision-making, reflecting the hierarchical and intelligent nature of the system's decision-making. The dynamic security risk assessment and command issuance module achieves a leap from simple "identity authentication" to comprehensive "risk warning" through the fusion of multi-source information and intelligent rule judgment, making decision-making more scientific and secure; the multi-source information includes power grid status and lock status.

[0023] Furthermore, the module for verifying dynamic authorization commands and unlocking specifically includes: After the target smart lock is successfully unlocked, the authorization management platform starts to count the cumulative operation time. If the cumulative operation time is greater than the expected operation time, an alarm is triggered and an operation status feedback instruction is sent to the mobile authorization terminal. If the mobile authorization terminal reports that the operation has ended, a locking command is executed on the target smart lock.

[0024] In this way, full monitoring and overtime management of the operation process are achieved, which can promptly detect and intervene in abnormal operations that have not been completed for a long time, prevent cabinet doors from being left open for a long time due to personnel forgetfulness or accidents, and further improve the level of precision in safety management.

[0025] Furthermore, the cabinet door status processing and information feedback module also includes: If the user closes the cabinet door and sends a work completion application to the authorized management platform, the smart lock obtains the cabinet door status through the multimodal sensing submodule; If the status is closed, then the operation is considered complete. If it is not turned off, an alarm message will be sent to the mobile authorized terminal; If the user does not close the cabinet door, send the latest status information of the lock body and the operation completion application to the authorized management platform.

[0026] The cabinet door status processing and information feedback module establishes a confirmation and closed-loop management mechanism for the completion of operations. Through mandatory status feedback, it ensures that the cabinet door is restored to a safe physical state after the operation, effectively solving the historical problem of "door not being closed properly". At the same time, it provides a channel for flexible handling in special circumstances, taking into account both safety and practicality.

[0027] The beneficial effects of this invention are as follows: Through the above design, this invention provides an intelligent lock control system and method for substation protection cabinets. By deeply integrating the real-time status of relay protection equipment, it strongly links physical access control with the core security logic of the power system, effectively preventing extreme risks such as accidental entry into operating intervals. Utilizing a multimodal sensing submodule, the system can not only execute commands but also proactively diagnose lock health, sense external attacks, and provide early warnings of lockout faults, transforming passive response into proactive early warning. From work ticket verification at the start of the operation to timeout monitoring during the operation and status confirmation at the end of the operation, it achieves refined and closed-loop management of the entire operation and maintenance process, eliminating breakpoints in the safety management chain.

[0028] Furthermore, the design principle of this invention is reliable, the structure is simple, and it has a very wide range of application prospects.

[0029] Therefore, it is evident that the present invention has outstanding substantive features and significant progress compared with the prior art, and the beneficial effects of its implementation are also obvious. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0031] Figure 1 The present invention provides an overall flowchart of an intelligent locking control method for a substation protection panel.

[0032] Figure 2 The present invention provides a detailed flowchart of an intelligent locking control method for a substation protection cabinet. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following implementation methods.

[0034] Example 1: This invention provides an intelligent interlocking control method for substation protection cabinets, such as... Figure 1 As shown, it includes the following steps: Step S1, the step of sending the unlock request, in which: The mobile authorization terminal sends an unlocking request to the authorization management platform for the smart lock on the target protection cabinet.

[0035] Step S2, querying task information and collecting lock body status, includes the following steps: The authorization management platform queries the power production management system. If there is valid work task information corresponding to the unlocking application, the application will be accepted. Smart locks collect lock body status information through their multimodal sensing submodule and upload the information to the authorization management platform; Step S3, obtaining the real-time operating status of the relay protection equipment, in which: The authorized management platform obtains the real-time operating status of the relay protection equipment associated with the target protection panel from the substation monitoring system; Step S4, dynamic security risk assessment and instruction issuance, in which: The authorization management platform performs dynamic security risk assessments based on the real-time operating status of relay protection equipment and the received lock body status information, according to a pre-set security interlocking logic rule base. If the risk assessment is successful, a dynamic authorization instruction will be generated and sent to the mobile authorization terminal. If the risk assessment fails, an alarm message will be sent to the mobile authorized terminal; Step S5, sending dynamic authorization instructions to the smart lock, in which: After receiving the dynamic authorization instruction, the mobile authorization terminal sends it to the target smart lock; Step S6, verifying the dynamic authorization command and unlocking the door, in which: After the smart lock verifies the dynamic authorization command, it will perform the unlocking operation. Step S7, the process of handling the status of the cabinet door and providing information feedback after the operation is completed, includes: After the operation is completed, the user can choose whether to close the cabinet door based on the lock body status; like Figure 2 As shown, the method further includes: In step S1: The mobile authorization terminal is used to send information to the authorization management platform and to receive and display dynamic authorization instructions; The smart lock is installed on the protection cabinet and includes a main control MCU, a lock body drive mechanism, a multimodal sensing submodule and a communication submodule; The authorization management platform includes a task interface service, a dynamic key generation engine, a security policy engine, and a device status interface service. Furthermore, the security policy engine sets up a security interlocking logic rule base; the device status interface service is used to communicate with the substation monitoring system to obtain the status of relay protection equipment.

[0036] Furthermore, step S2 specifically includes: The lock body status information includes reported lock damage information and mechanism jamming fault information; the effective work task information includes the estimated work duration. The multimodal sensing submodule includes at least a magnetic induction sensor, an angle sensor, and a micro switch; Furthermore, the magnetic induction sensor is used to determine the magnetic induction signal of the relative position between the door and the bolt; the angle sensor is used to accurately determine the angle encoding signal of the bolt rotation angle; and the micro switch is used to detect the micro switch trigger signal of whether the bolt is subjected to effective pressure. Furthermore, the multimodal sensing submodule also includes a vibration sensor. The vibration sensor monitors whether the smart lock is subjected to abnormal impact or vibration. When the vibration amplitude exceeds the threshold, it immediately triggers a forced demolition alarm and reports it.

[0037] Step S2, by linking with the work permit system, ensures that "no work can start without a permit," thus preventing unplanned operations from the source. At the same time, real-time collection of lock body status provides crucial local physical security data for subsequent risk assessment.

[0038] Furthermore, step S3 specifically includes: The real-time operating status of the relay protection equipment is one or more of the following: the status of the protection device maintenance pressure plate, the status of the protection function soft pressure plate, and the device alarm signal. Furthermore, step S4 specifically includes: The pre-defined security interlocking logic rule base includes: When the real-time operating status of the relay protection device meets the first preset condition, the forced blocking strategy is triggered and the risk assessment result is not passed. Furthermore, the first preset condition includes the protection device maintenance pressure plate associated with the target cabinet being in the engaged state, or the protection function soft pressure plate being in the disengaged state, or the device having a serious alarm signal. Furthermore, when the lock body status information meets the second preset condition, the early warning locking strategy is triggered, and the risk assessment result is determined by the staff. Furthermore, the second preset condition includes the lock reporting a tampering alarm, or a mechanism jamming fault warning, or a historical locking failure record; The rule base defines clear decision-making logic. The mandatory interlocking strategy implements a "one-vote veto" for the highest risk state of the power grid, ensuring absolute safety. The early warning interlocking strategy flexibly handles the risks of the interlocking device itself and leaves the decision to human decision-making, reflecting the hierarchical and intelligent nature of the system's decision-making. Step S4 achieves a leap from simple "identity authentication" to comprehensive "risk warning" through the fusion of multi-source information and intelligent rule judgment, making the decision more scientific and secure; the multi-source information includes power grid status and lock status.

[0039] Furthermore, step S6 specifically includes: After the target smart lock is successfully unlocked, the authorization management platform starts to count the cumulative operation time. If the cumulative operation time is greater than the expected operation time, an alarm is triggered and an operation status feedback instruction is sent to the mobile authorization terminal. If the mobile authorization terminal reports that the operation has ended, a locking command is executed on the target smart lock.

[0040] In this way, full monitoring and overtime management of the operation process are achieved, which can promptly detect and intervene in abnormal operations that have not been completed for a long time, prevent cabinet doors from being left open for a long time due to personnel forgetfulness or accidents, and further improve the level of precision in safety management.

[0041] Furthermore, step S7 specifically includes: If the user closes the cabinet door and sends a work completion application to the authorized management platform, the smart lock obtains the cabinet door status through the multimodal sensing submodule; If the status is closed, then the operation is considered complete. If it is not turned off, an alarm message will be sent to the mobile authorized terminal; If the user does not close the cabinet door, send the latest status information of the lock body and the operation completion application to the authorized management platform.

[0042] Step S7 establishes a confirmation and closed-loop management mechanism for the completion of the operation. Through mandatory status feedback, it ensures that the cabinet door is restored to a safe physical state after the operation, effectively solving the historical problem of "the door is not closed tightly". At the same time, it provides a channel for flexible handling in special circumstances, taking into account both safety and practicality.

[0043] Example 2: The present invention also provides an intelligent lock control system for substation protection cabinets, including a module for sending unlocking applications, a module for querying task information and collecting lock body status, a module for obtaining real-time operating status of relay protection equipment, a module for dynamic safety risk assessment and instruction issuance, a module for sending dynamic authorization instructions, a module for verifying dynamic authorization instructions and unlocking, and a module for cabinet door status processing and information feedback. The module for sending unlock requests includes: The mobile authorization terminal sends an unlocking request to the authorization management platform for the smart lock on the target protection cabinet.

[0044] The module for querying task information and collecting lock body status includes: The authorization management platform queries the power production management system. If there is valid work task information corresponding to the unlocking application, the application will be accepted. Smart locks collect lock body status information through their multimodal sensing submodule and upload the information to the authorization management platform; The module for obtaining the real-time operating status of relay protection equipment includes: The authorized management platform obtains the real-time operating status of the relay protection equipment associated with the target protection panel from the substation monitoring system.

[0045] The dynamic security risk assessment and instruction issuance module, in which: The authorization management platform performs dynamic security risk assessments based on the real-time operating status of relay protection equipment and the received lock body status information, according to a pre-set security interlocking logic rule base. If the risk assessment is successful, a dynamic authorization instruction will be generated and sent to the mobile authorization terminal. If the risk assessment fails, an alarm message will be sent to the mobile authorized terminal; The module for sending dynamic authorization instructions includes: After receiving the dynamic authorization instruction, the mobile authorization terminal sends it to the target smart lock; The module for verifying dynamic authorization commands and unlocking includes: After the smart lock verifies the dynamic authorization command, it will perform the unlocking operation. The cabinet door status processing and information feedback module includes: After the operation is completed, the user can choose whether to close the cabinet door based on the lock body status; If the user closes the cabinet door and sends a work completion application to the authorized management platform, the smart lock obtains the cabinet door status through the multimodal sensing submodule; If the status is closed, then the operation is considered complete. If it is not turned off, an alarm message will be sent to the mobile authorized terminal; If the user does not close the cabinet door, send the latest status information of the lock body and the operation completion application to the authorized management platform.

[0046] Furthermore, the module for sending the unlock request specifically includes: The mobile authorization terminal is used to send information to the authorization management platform and to receive and display dynamic authorization instructions; The smart lock is installed on the protection cabinet and includes a main control MCU, a lock body drive mechanism, a multimodal sensing submodule and a communication submodule; The authorization management platform includes a task interface service, a dynamic key generation engine, a security policy engine, and a device status interface service. Furthermore, the security policy engine sets up a security interlocking logic rule base; the device status interface service is used to communicate with the substation monitoring system to obtain the status of relay protection equipment.

[0047] Furthermore, the module for querying task information and collecting lock body status specifically includes: The lock body status information includes reported lock damage information and mechanism jamming fault information; the effective work task information includes the estimated work duration. The multimodal sensing submodule includes at least a magnetic induction sensor, an angle sensor, and a micro switch; Furthermore, the magnetic induction sensor is used to determine the magnetic induction signal of the relative position between the door and the bolt; the angle sensor is used to accurately determine the angle encoding signal of the bolt rotation angle; and the micro switch is used to detect the micro switch trigger signal of whether the bolt is subjected to effective pressure. Furthermore, the multimodal sensing submodule also includes a vibration sensor. The vibration sensor monitors whether the smart lock is subjected to abnormal impact or vibration. When the vibration amplitude exceeds the threshold, it immediately triggers a forced demolition alarm and reports it.

[0048] The module for querying task information and collecting lock body status, in conjunction with the work ticket system, ensures "no work without a ticket," eliminating unplanned operations from the source. At the same time, the real-time collection of lock body status provides crucial local physical security data for subsequent risk assessment.

[0049] Furthermore, the module for obtaining the real-time operating status of the relay protection equipment specifically includes: The real-time operating status of the relay protection equipment is one or more of the following: the status of the protection device maintenance pressure plate, the status of the protection function soft pressure plate, and the device alarm signal. Furthermore, the dynamic security risk assessment and instruction issuance module specifically includes: The pre-defined security interlocking logic rule base includes: When the real-time operating status of the relay protection device meets the first preset condition, the forced blocking strategy is triggered and the risk assessment result is not passed. Furthermore, the first preset condition includes the protection device maintenance pressure plate associated with the target cabinet being in the engaged state, or the protection function soft pressure plate being in the disengaged state, or the device having a serious alarm signal. Furthermore, when the lock body status information meets the second preset condition, the early warning locking strategy is triggered, and the risk assessment result is determined by the staff. Furthermore, the second preset condition includes the lock reporting a tampering alarm, or a mechanism jamming fault warning, or a historical locking failure record; The rule base defines clear decision-making logic. The mandatory interlocking strategy implements a "one-vote veto" for the highest risk state of the power grid, ensuring absolute safety. The early warning interlocking strategy flexibly handles the risks of the interlocking device itself and leaves the decision to human decision-making, reflecting the hierarchical and intelligent nature of the system's decision-making. The dynamic security risk assessment and command issuance module achieves a leap from simple "identity authentication" to comprehensive "risk warning" through the fusion of multi-source information and intelligent rule judgment, making decision-making more scientific and secure; the multi-source information includes power grid status and lock status.

[0050] Furthermore, the module for verifying dynamic authorization commands and unlocking specifically includes: After the target smart lock is successfully unlocked, the authorization management platform starts to count the cumulative operation time. If the cumulative operation time is greater than the expected operation time, an alarm is triggered and an operation status feedback instruction is sent to the mobile authorization terminal. If the mobile authorization terminal reports that the operation has ended, a locking command is executed on the target smart lock.

[0051] In this way, full monitoring and overtime management of the operation process are achieved, which can promptly detect and intervene in abnormal operations that have not been completed for a long time, prevent cabinet doors from being left open for a long time due to personnel forgetfulness or accidents, and further improve the level of precision in safety management.

[0052] The cabinet door status processing and information feedback module establishes a confirmation and closed-loop management mechanism for the completion of operations. Through mandatory status feedback, it ensures that the cabinet door is restored to a safe physical state after the operation, effectively solving the historical problem of "door not being closed properly". At the same time, it provides a channel for flexible handling in special circumstances, taking into account both safety and practicality.

[0053] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The methods disclosed in the embodiments are described simply because they correspond to the systems disclosed in the embodiments; relevant details can be found in the method section.

[0054] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0055] In the embodiments provided by this invention, it should be understood that the disclosed systems, methods, and approaches can be implemented in other ways. For example, the system embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between systems or units may be electrical, mechanical, or other forms.

[0056] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0057] In addition, the functional modules in the various embodiments of the present invention can be integrated into one processing unit, or each module can exist physically separately, or two or more modules can be integrated into one unit.

[0058] Similarly, in the various embodiments of the present invention, each processing unit can be integrated into a functional module, or each processing unit can exist physically, or two or more processing units can be integrated into a functional module.

[0059] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0060] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0061] The above-disclosed embodiments are merely preferred embodiments of the present invention, but the present invention is not limited thereto. Any non-creative variations that can be conceived by those skilled in the art, as well as any improvements and modifications made without departing from the principles of the present invention, should fall within the protection scope of the present invention.

Claims

1. A method for intelligent interlocking control of a substation protection panel, characterized in that, Includes the following steps: Step S1, the step of sending the unlock request, in which: The mobile authorization terminal sends an unlocking request to the authorization management platform for the smart lock on the target protection cabinet; Step S2, querying task information and collecting lock body status, includes the following steps: The authorization management platform queries the power production management system. If there is valid work task information corresponding to the unlocking application, the application will be accepted. Smart locks collect lock body status information through their multimodal sensing submodule and upload the information to the authorization management platform; Step S3, obtaining the real-time operating status of the relay protection equipment, in which: The authorized management platform obtains the real-time operating status of the relay protection equipment associated with the target protection panel from the substation monitoring system; Step S4, dynamic security risk assessment and instruction issuance, in which: The authorization management platform performs dynamic security risk assessments based on the real-time operating status of relay protection equipment and the received lock body status information, according to a pre-set security interlocking logic rule base. If the risk assessment is successful, a dynamic authorization instruction will be generated and sent to the mobile authorization terminal. If the risk assessment fails, an alarm message will be sent to the mobile authorized terminal; Step S5, sending dynamic authorization instructions to the smart lock, in which: After receiving the dynamic authorization instruction, the mobile authorization terminal sends it to the target smart lock; Step S6, verifying the dynamic authorization command and unlocking the door, in which: After the smart lock verifies the dynamic authorization command, it will perform the unlocking operation. Step S7, the process of handling the status of the cabinet door and providing information feedback after the operation is completed, includes: After the operation is completed, the user can choose whether to close the cabinet door based on the lock status.

2. The method according to claim 1, characterized in that, The multimodal sensing submodule described in step S2 includes at least a magnetic induction sensor, an angle sensor, and a micro switch; The magnetic induction sensor is used to determine the magnetic induction signal of the relative position between the door and the bolt; the angle sensor is used to accurately determine the angle encoding signal of the bolt rotation angle; and the micro switch is used to detect the micro switch trigger signal of whether the bolt is subjected to effective pressure.

3. The method according to claim 2, characterized in that, The multimodal sensing submodule described in step S2 also includes a vibration sensor; the vibration sensor monitors whether the smart lock is subjected to abnormal impact or vibration, and when the vibration amplitude exceeds a threshold, it immediately triggers a forced demolition alarm and reports it; the task information includes the estimated task duration.

4. The method according to claim 3, characterized in that, The lock body status information mentioned in step S2 includes reported lock damage information and mechanism jamming fault information.

5. The method according to claim 4, characterized in that, The real-time operating status of the relay protection equipment in step S3 is one or more of the following: protection device maintenance pressure plate status, protection function soft pressure plate status, and device alarm signal.

6. The method according to claim 5, characterized in that, The preset security interlocking logic rule base mentioned in step S4 specifically includes: When the real-time operating status of the relay protection device meets the first preset condition, the forced blocking strategy is triggered and the risk assessment result is not passed. The first preset condition includes the protection device maintenance pressure plate associated with the target cabinet being in the engaged state, or the protection function soft pressure plate being in the disengaged state, or the device having a serious alarm signal. When the lock body status information meets the second preset condition, the early warning locking strategy is triggered, and the risk assessment result is determined by the staff. The second preset condition includes a lock reporting a tampering alarm, a mechanism jamming fault warning, or a historical locking failure record.

7. The method according to claim 6, characterized in that, In step S6, after the target smart lock is successfully unlocked, the authorization management platform starts to count the cumulative operation time. If the cumulative operation time is greater than the expected operation time, an alarm is triggered and an operation status feedback instruction is sent to the mobile authorization terminal. If the mobile authorization terminal reports that the operation has ended, a locking command is executed on the target smart lock.

8. The method according to claim 7, characterized in that, Step S7 specifically also includes: If the user closes the cabinet door and sends a work completion application to the authorized management platform, the smart lock obtains the cabinet door status through the multimodal sensing submodule; If the status is closed, then the operation is considered complete. If it is not turned off, an alarm message will be sent to the mobile authorized terminal; If the user does not close the cabinet door, send the latest status information of the lock body and the operation completion application to the authorized management platform.

9. A smart interlocking control system for substation protection cabinets, characterized in that, It includes modules for sending unlocking requests, querying task information and collecting lock body status, obtaining real-time operating status of relay protection equipment, dynamic security risk assessment and instruction issuance, sending dynamic authorization instructions, verifying dynamic authorization instructions and unlocking, and cabinet door status processing and information feedback. The module for sending unlock requests includes: the mobile authorization terminal sending an unlock request to the authorization management platform for the smart lock on the target protection cabinet; The module for querying task information and collecting lock body status includes: the authorization management platform queries the power production management system, and if there is valid work task information corresponding to the unlocking application, the application is accepted; the smart lock collects lock body status information through its multimodal sensing submodule and uploads the information to the authorization management platform. The module for obtaining the real-time operating status of relay protection equipment includes: the authorized management platform obtaining the real-time operating status of the relay protection equipment associated with the target protection panel from the substation monitoring system; The dynamic security risk assessment and instruction issuance module includes an authorization management platform that performs dynamic security risk assessments based on the real-time operating status of the relay protection equipment and the received lock body status information, according to a preset security interlocking logic rule base. If the risk assessment is successful, a dynamic authorization instruction will be generated and sent to the mobile authorization terminal. If the risk assessment fails, an alarm message will be sent to the mobile authorized terminal; The module for sending dynamic authorization instructions includes: after receiving a dynamic authorization instruction, the mobile authorization terminal sends it to the target smart lock; The module for verifying dynamic authorization commands and unlocking the lock includes the following steps: After the smart lock successfully verifies the dynamic authorization command, it performs the unlocking operation. The cabinet door status processing and information feedback module allows users to choose whether to close the cabinet door after the operation is completed, based on the lock status.

10. The system according to claim 9, characterized in that, The system includes a mobile authorization terminal, smart locks, and an authorization management platform; The mobile authorization terminal is used to send information to the authorization management platform and to receive and display dynamic authorization instructions; The smart lock is installed on the protection cabinet and includes a main control MCU, a lock body drive mechanism, a multimodal sensing submodule and a communication submodule; The authorization management platform includes a task interface service, a dynamic key generation engine, a security policy engine, and a device status interface service.

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