A method and system for preventing misoperation of PT secondary air break in an operation ticket

Abstract

This invention provides a method for verifying the operation of PT secondary circuit breakers in operation tickets to prevent misoperation. The method includes initializing multiple key-value pair containers to store operation items for various specified equipment types; identifying the backup bus to be switched on from the operation tasks in the operation ticket; analyzing each operation step in the operation ticket and sequentially extracting the operation items for each specified equipment type from the operation steps and storing them in the key-value pair containers until information indicating that the backup bus's PT secondary circuit breaker has disconnected is found; obtaining the PT equipment number and, in conjunction with the operation steps in the operation ticket, determining the associated equipment and corresponding operation items; comparing the operation items of the associated equipment with all key-value pair containers to determine whether the associated equipment has performed the required safety operation to meet the backup automatic power-on conditions. Implementing this invention can automatically and reliably determine whether the backup automatic power-on conditions are met, overcoming problems such as poor verification reliability and low efficiency, and eliminating the risk of erroneous backup automatic power-on due to human error.

Description

Technical Field

[0001] This invention relates to the field of power system technology, and in particular to a method and system for verifying the operation of PT secondary circuit breakers in operation tickets to prevent misoperation. Background Technology

[0002] In substations, the operation of the secondary air circuit breakers of voltage transformers (PTs) on the busbars is crucial. In particular, before disconnecting the secondary air circuit breakers of the PTs on the busbars for maintenance or testing, it is essential to ensure that the automatic transfer switch (ATS) is reliably discharged. Otherwise, the ATS may misjudge the loss of voltage on that section of the busbar, leading to serious consequences such as false tripping and incorrect power supply switching, directly affecting the reliability of the substation's power supply and system safety.

[0003] Currently, the main method relies on operators to conduct safety audits of the PT secondary circuit breaker operation logic in the operation ticket to determine whether the conditions for automatic backup power transfer are met (such as deactivating the relevant tripping switch of the automatic backup power transfer system, disconnecting the main transformer low-voltage switch, etc.). However, this manual method is highly dependent on the experience and sense of responsibility of the personnel, resulting in problems such as poor audit reliability and low efficiency.

[0004] Therefore, it is necessary to propose a new method for reviewing the secondary circuit breakers of PT in operation tickets to prevent misoperation. This method can automatically and reliably determine whether the conditions for automatic power-on are met. It not only overcomes the problems of poor reliability and low efficiency of the existing manual review of operation tickets, but also technically eliminates the risk of erroneous automatic power-on due to human error. Summary of the Invention

[0005] The technical problem to be solved by the embodiments of the present invention is to provide a method and system for reviewing the secondary circuit breaker of PT in the operation ticket to prevent misoperation. It can automatically and reliably determine whether the conditions for automatic power-on are met. It not only overcomes the problems of poor detection reliability and low efficiency of the existing manual review of operation tickets, but also technically eliminates the risk of automatic power-on misoperation caused by human error.

[0006] To address the aforementioned technical problems, this invention provides a method for verifying the operation of secondary circuit breakers (PTs) in operation tickets to prevent misoperation. The method includes the following steps: Initialize multiple key-value pair containers to store operation items for various specified device types; wherein, the various specified device types include switches, trolleys, pressure plates, and voltage parallel conversion handles, and each operation item for a specified device type includes a device identifier and an operation verb; Obtain the operation ticket, and identify the busbar whose operating status has changed to maintenance status or hot standby status as the standby busbar from the operation tasks of the operation ticket. Then, analyze the operation steps of the operation ticket item by item, and extract the operation items of each specified equipment type in each operation step in sequence and store them into the corresponding key-value pair container until the information of the secondary circuit breaker of the standby busbar PT is disconnected in a certain operation step. From the information of the PTs to be put into operation, obtain the PT's equipment number, and in conjunction with the operation steps of the operation ticket, determine the associated equipment and its operation items corresponding to the PT's equipment number; wherein, the equipment type of the associated equipment is one of the multiple specified equipment types; The operation items of the associated device are compared with all key-value pairs of containers, and the comparison results are used to determine whether the associated device has performed the required safety operation. This is to prevent the PT secondary circuit breaker operation logic from being incorrect and failing to meet the backup power supply conditions.

[0007] The specific steps of analyzing each operation step of the operation ticket, extracting the operation items of each specified equipment type in each operation step and storing them in the corresponding key-value pair container, until the analysis reveals that the secondary circuit breaker of the standby bus PT has disconnected in a certain operation step, include: The operation steps of the operation ticket are analyzed item by item in a top-down order. The equipment type and the corresponding equipment number and operation verb in each operation step are identified. Each equipment type is matched with all key-value pair containers. Furthermore, the equipment number and operation verb corresponding to each equipment type are formed into operation items and stored in the matched key-value pair container. When the analysis detects that a backup busbar PT is detected in a certain operation step and that the secondary circuit breaker of the PT is disconnected in its sub-operation step, the analysis of subsequent operation steps of the backup busbar PT is stopped, and all key-value pair containers are saved.

[0008] The specific steps of comparing the operation items of the associated device with all key-value pairs and determining whether the associated device has performed the required safety operation based on the comparison results, in order to prevent the PT secondary circuit breaker operation logic from being erroneous and failing to meet the backup power supply conditions, include: From all the key-value pair containers, based on the device type of each associated device, obtain the key-value pair containers that match each associated device. If at least one associated device's operation item is found to exist in the matched key-value pair container, it is determined that the associated device has performed the required safety operation, and the PT secondary circuit breaker operation logic is considered correct and can meet the backup power supply conditions. If the comparison shows that the operation items of all associated devices do not exist in their respective matching key-value pair containers, it is determined that the associated devices have not performed the required safety operations, and the operation logic of the PT secondary circuit breaker is deemed to be incorrect and cannot meet the conditions for automatic power supply.

[0009] The associated equipment includes a main transformer low-voltage switch, a main transformer low-voltage switch trolley, a backup automatic transfer switch main function pressure plate, a main transformer low-voltage switch tripping pressure plate in the backup automatic transfer switch panel, a corresponding main transformer low-voltage switch maintenance pressure plate in the backup automatic transfer switch panel, a corresponding sectionalizing switch tripping pressure plate in the backup automatic transfer switch panel, a corresponding sectionalizing switch locking pressure plate in the backup automatic transfer switch panel, and a PT parallel conversion handle.

[0010] Wherein, when the specified device type is a switch, its operation verbs include closing and opening; when the specified device type is a trolley, its operation verbs include testing and maintenance; when the specified device type is a pressure plate, its operation verbs include engaging and disengaging; when the specified device type is a parallel changeover handle, its operation verb is parallel.

[0011] This invention also provides a system for verifying the operation of secondary circuit breakers (PTs) in operation tickets to prevent misoperation, including: An initialization category storage container unit is used to initialize multiple key-value pair containers, which are used to store operation items of various specified device types; wherein, the various specified device types include switches, trolleys, pressure plates and voltage parallel conversion handles, and the operation item of each specified device type includes a device identifier and an operation verb; The operation ticket parsing and classification storage unit is used to obtain operation tickets and identify the busbars whose operating status has changed to maintenance status or hot standby status as standby buses from the operation tasks of the operation tickets. Furthermore, the operation steps of the operation tickets are analyzed item by item to extract the operation items of each specified equipment type in each operation step and store them into the corresponding key-value pair container until the information of the secondary circuit breaker of the standby busbar PT is disconnected in a certain operation step. The key operation identification unit is used to obtain the device number of the PT from the information of the PT to be put into operation, and determine the associated device and its operation item corresponding to the device number of the PT in combination with the operation steps of the operation ticket; wherein, the device type of the associated device is one of the multiple specified device types; The safety condition verification unit is used to compare the operation items of the associated device with all key-value pairs of containers, and to determine whether the associated device has performed the required safety operation based on the comparison results, in order to prevent the PT secondary circuit breaker operation logic from being incorrect and failing to meet the backup power supply conditions.

[0012] The security condition verification unit includes: The backup power supply condition satisfaction module is used to determine that the associated device has performed the required safety operation if the operation item of at least one associated device is found to exist in the matched key-value pair container, and to determine that the PT secondary circuit breaker operation logic is correct and can meet the backup power supply condition. The backup power supply condition not being met module is used to determine that if the operation items of all associated devices do not exist in their respective matching key-value pair containers, the associated devices have not performed the required safety operation, and the operation logic of the PT secondary circuit breaker is deemed to be erroneous and cannot meet the backup power supply condition.

[0013] Wherein, when the specified device type is a switch, its operation verbs include closing and opening; when the specified device type is a trolley, its operation verbs include testing and maintenance; when the specified device type is a pressure plate, its operation verbs include engaging and disengaging; when the specified device type is a parallel changeover handle, its operation verb is parallel.

[0014] The associated equipment includes a main transformer low-voltage switch, a main transformer low-voltage switch trolley, a backup automatic transfer switch main function pressure plate, a main transformer low-voltage switch tripping pressure plate in the backup automatic transfer switch panel, a corresponding main transformer low-voltage switch maintenance pressure plate in the backup automatic transfer switch panel, a corresponding sectionalizing switch tripping pressure plate in the backup automatic transfer switch panel, a corresponding sectionalizing switch locking pressure plate in the backup automatic transfer switch panel, and a PT parallel conversion handle.

[0015] Implementing the embodiments of the present invention has the following beneficial effects: This invention transforms manual experience into an automatically executed "storage-retrieval-judgment" procedure. It performs mandatory safety audits on the operational logic involving PT secondary circuit breakers to prevent human error. Through categorized storage and system verification, it systematically covers all safety paths, achieving automation of the audit process and consistency of judgment results. This ensures the reliability of audit conclusions and enables automatic and reliable determination of whether the conditions for automatic backup power transfer are met. It not only overcomes the problems of poor detection reliability and low efficiency of existing manual audit operation tickets, but also technically eliminates the risk of malfunction of automatic backup power transfer due to human error. Attached Figure Description

[0016] 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 some embodiments of the present invention. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of the present invention.

[0017] Figure 1 A flowchart of a method for reviewing the secondary circuit breaker of PT in an operation ticket to prevent misoperation, provided by an embodiment of the present invention; Figure 2This is a schematic diagram of a system for reviewing and verifying the operation of a secondary circuit breaker (PT) in an operation ticket, as provided in an embodiment of the present invention. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 As shown in the figure, this invention proposes a method for preventing misoperation of PT secondary circuit breakers in operation tickets. The method includes the following steps: Step S1: Initialize multiple key-value pair containers to store operation items for various specified device types; wherein, the various specified device types include switches, trolleys, pressure plates, and voltage parallel conversion handles, and each operation item for a specified device type includes a device identifier and an operation verb; The specific process involves creating multiple empty key-value pair containers to store operation items for different specified device types, such as switches, trolleys, pressure plates, and voltage parallel conversion handles.

[0020] At this time, each operation item for a specified equipment type includes an equipment identifier and an operation verb. For example, for a specified equipment type: switch, the operation verbs include closing and opening; for a specified equipment type: trolley, the operation verbs include testing and maintenance; for a specified equipment type: pressure plate, the operation verbs include engaging and disengaging; for a specified equipment type: parallel changeover handle, the operation verb is parallel.

[0021] Step S2: Obtain the operation ticket, and identify the busbar whose operating status has changed to maintenance status or hot standby status as the standby busbar from the operation tasks of the operation ticket. Further analyze the operation steps of the operation ticket item by item, and extract the operation items of each specified equipment type in each operation step in sequence and store them into the corresponding key-value pair container until the information of the secondary circuit breaker of the standby busbar PT is disconnected in a certain operation step. The specific process is as follows: First, obtain the operation ticket; the data on the operation ticket includes the operation task, operation sequence, and operation steps. It should be noted that sub-operation steps may appear within the operation steps.

[0022] Secondly, the busbars whose operating status has changed to maintenance status or hot standby status can be directly identified from the operation tasks in the operation ticket as the busbars to be put into operation.

[0023] Finally, the operation steps of the operation ticket are analyzed item by item to sequentially extract the operation items for each specified equipment type in each operation step and store them in the corresponding key-value pair container, until the analysis reveals that the secondary circuit breaker of the standby busbar PT has a disconnection action in a certain operation step, that is, the operation item information related to "disconnecting the secondary circuit breaker of the PT" in a certain operation step is analyzed. At this point, the specific implementation steps are as follows: The operation steps of the operation ticket are analyzed item by item in a top-down order. The equipment type and the corresponding equipment number and operation verb in each operation step are identified. Each equipment type is matched with all key-value pair containers. Furthermore, the equipment number and operation verb corresponding to each equipment type are formed into operation items and stored in the matched key-value pair container. When the analysis detects that a standby busbar PT (Power Transmission Unit) is involved in a certain operation step, and that the secondary circuit breaker of that PT is tripped in a sub-operation step, the analysis confirms that the secondary circuit breaker of the standby busbar PT has tripped in that operation step. The analysis of subsequent operation steps for that step is then stopped, and all key-value pairs are saved. It should be noted that the information about the standby busbar PT and its tripped secondary circuit breaker is obtained through keyword extraction analysis. For example, the equipment identifier or number of the standby busbar PT is extracted, along with the key information "tripped a certain air switch".

[0024] Step S3: Obtain the device number of the PT from the information of the PT to be put into operation, and determine the associated device and its operation item corresponding to the device number of the PT in combination with the operation steps of the operation ticket; wherein, the device type of the associated device is one of the multiple specified device types; The specific process is as follows: extract the equipment number of the PT from the information of the PT to be put into operation, and deduce the associated equipment (such as the main transformer low-voltage switch) and its operation items (such as equipment identifier: 502A, operation verb: trip) based on the operation steps of the operation ticket.

[0025] It is understood that the associated equipment includes, but is not limited to, the main transformer low-voltage switch, the main transformer low-voltage switch trolley, the main switch control panel, the main transformer low-voltage switch tripping panel in the main switch control panel, the corresponding main transformer low-voltage switch maintenance panel in the main switch control panel, the corresponding sectionalizing switch tripping panel in the main switch control panel, the corresponding sectionalizing switch interlocking panel in the main switch control panel, and the PT parallel conversion handle.

[0026] For example, the verbs for linking devices are as follows: ① Main transformer low-voltage switch: tripped; ② Main transformer low-voltage switch trolley: test; ③ Main transformer low-voltage switch trolley: Overhaul; ④ Automatic switching main control plate: Activation; ⑤ Backup self-projection screen trip main transformer low voltage switch: Exit; ⑥ The corresponding main transformer low-voltage switch maintenance pressure plate in the automatic transfer panel: put into operation; ⑦ The corresponding segment switch pressure plate in the automatic projection screen can be used to exit; ⑧ The corresponding segment switch pressure plate in the self-projection screen is locked: engaged; ⑨PT Parallel Conversion Handle: Parallel.

[0027] Step S4: Compare the operation items of the associated device with all key-value pairs of containers, and determine whether the associated device has performed the required safety operation based on the comparison results, in order to prevent the PT secondary circuit breaker operation logic from being incorrect and failing to meet the backup power supply conditions.

[0028] The specific process is as follows: First, from all the key-value pair containers, based on the device type of each associated device, obtain the key-value pair containers that match each associated device.

[0029] Secondly, if at least one associated device's operation item is found to exist in the matched key-value pair container, it is determined that the associated device has performed the required safety operation, and the PT secondary circuit breaker operation logic is correct and can meet the backup power supply conditions; or, if none of the associated devices' operation items exist in their respective matched key-value pair containers, it is determined that the associated devices have not performed the required safety operation, and the PT secondary circuit breaker operation logic is incorrect and cannot meet the backup power supply conditions.

[0030] Understandably, a successful audit is considered to meet the security condition if the operation item of any associated device exists in the verification results of the matched key-value pair container; a failed audit is considered to be due to a logical error that fails to meet the security condition if the operation items of all associated devices do not exist in the verification results of their respective matched key-value pair containers.

[0031] In one example, taking operation ticket one as an example, the application scenario of verifying the PT secondary circuit breaker in the operation ticket to prevent misoperation in an embodiment of the present invention is further explained as follows: (1) The operation task of Operation Ticket 1 is to switch 10kV 2AM from the running state to the hot standby state, and switch all equipment of 10kV 2AM from the running state to the hot standby state. Therefore, 10kV 2AM bus is the standby bus.

[0032] At this point, the operation sequence and steps for operation ticket one are shown in Table 1 below: Table 1

[0033] (2) Review process Step 1: Initialize the category storage containers: Create four key-value pair containers to store operation items for different device types such as switches, trolleys, pressure plates, and voltage parallel conversion handles. These are the switch key-value pair container, trolley key-value pair container, pressure plate key-value pair container, and voltage parallel conversion handle key-value pair container, respectively.

[0034] Step 2: Operation Ticket Parsing and Classification Storage: Parse the operation steps of Operation Ticket 1 item by item, identify the equipment type (including: switch, trolley, pressure plate, voltage parallel conversion handle) and its corresponding operation items (equipment identifier and operation verb) in each operation step, and store the operation items into the corresponding key-value pair container.

[0035] At this point, starting from step 1, the relevant content of each step is analyzed item by item, and the corresponding operation items are stored in different key-value pair containers. This continues until step 21 identifies "In the 10kV 2AM voltage transformer 52APT knife switch trolley cabinet:" and in the sub-step of step 21.1, it is identified that "Disconnect voltage metering circuit switch air switch QF11" is the information that the secondary air switch of the 10kV 2AM bus PT to be put into standby has disconnected. At this point, the classification and storage of all key-value pair containers is stopped.

[0036] At this point, the key-value pair container has completed the categorized storage from step 1 to step 20, and the categorized storage result is shown below: 1) Key values ​​of the switch trolley to the container: {2C1: open, F02: open, F04: open, F06: open, F08: open, F10: open, F12: open, F14: open, 521: open}; 2) Car key-value pair container: {}; 3) Platen key-value pair container: {}; 4) Voltage parallel conversion handle key value pair container: {}.

[0037] Third step: Since step 21 indicates that the secondary circuit breaker of the PT on the 10kV 2AM busbar to be put into operation has a disconnection action, extract the PT number 52APT from "In the 10kV 2AM voltage transformer 52APT disconnector trolley cabinet:", and deduce that the associated equipment is the main transformer low voltage switch, the corresponding switch number is 502A, and the operation verb is trip.

[0038] Fourth step: For the operation item {502A: trip} of the main transformer low-voltage switch, the key value of the switch trolley in the third step is traversed and compared. Since the key value pair {502A: trip} in the switch trolley key value pair in the third step does not exist, it is determined that the main transformer low-voltage switch 502A has not performed the required safety operation (trip), thus it is determined that the operation logic of the 52APT secondary circuit breaker is wrong and cannot meet the standby automatic power-on conditions.

[0039] In another example, taking operation ticket two as an example, we will further illustrate an application scenario of verifying the PT secondary circuit breaker in the operation ticket to prevent misoperation, as detailed below: (1) The operation task of Operation Ticket 2 is as follows: the 10kV 2AM voltage transformer 52APT is changed from the operating state to the maintenance state, the primary load of 10kV 2AM is switched to the main transformer #1, the primary load of 10kV 2BM is switched to the main transformer #3, and the secondary load of 10kV 2AM is switched to the 10kV 1M voltage transformer 51PT. Therefore, the 10kV 2AM bus is the standby bus.

[0040] At this point, the operation sequence and steps for operation ticket two are shown in Table 2 below: Table 2

[0041] (2) Review process Step 1: Initialize the category storage containers: Create four key-value pair containers to store operation items for different device types such as switches, trolleys, pressure plates, and voltage parallel conversion handles. These are the switch key-value pair container, trolley key-value pair container, pressure plate key-value pair container, and voltage parallel conversion handle key-value pair container, respectively.

[0042] Step 2: Operation Ticket Parsing and Classification Storage: Parse the operation steps of Operation Ticket 1 item by item, identify the equipment type (including: switch, trolley, pressure plate, voltage parallel conversion handle) and its corresponding operation items (equipment identifier and operation verb) in each operation step, and store the operation items into the corresponding key-value pair container.

[0043] At this point, starting from step 1, the relevant content of each step is analyzed item by item, and the corresponding operation items are stored in different key-value pair containers. This continues until step 26 identifies "In the 10kV 2AM voltage transformer 52APT disconnector trolley cabinet:" and in the sub-step of step 26.1, it is identified that "Disconnect the secondary protection voltage 1ZKK-A air switch of phase A" indicates that the secondary air switch of the 10kV 2AM bus PT to be put into operation has disconnected. At this point, the classification and storage of all key-value pair containers is stopped.

[0044] At this point, the key-value pair container has completed the categorized storage from step 1 to step 25, and the categorized storage result is shown below: 1) Key values ​​of the switch trolley to the container: {521: closed, D01: closed, 532: open, D03: closed, 532: closed, 502B: open, D02: open, 502A: open}; 2) Car key-value pair container: {521: job, 5212: job, 532: job, 5322: job}; 3) Platen key-value pair container: {}; 4) Voltage parallel conversion handle key value pair container: {}.

[0045] Third step: Since step 26 indicates that the secondary circuit breaker of the PT on the 10kV 2AM busbar to be put into operation has a disconnection action, extract the PT number 52APT from "In the 10kV 2AM voltage transformer 52APT disconnector trolley cabinet:", and deduce that the associated equipment is the main transformer low-voltage switch, the corresponding switch number is 502A, and the operation verb is tripping.

[0046] Fourth step: For the operation item {502A: Open} of the main transformer low-voltage switch, the key value container of the switch trolley in the third step is traversed and compared. Since the key value pair in the key value container of the switch trolley in the third step is {502A: Open}, it is determined that the main transformer low-voltage switch 502A has performed the required safety operation (opening), thus confirming that the operation logic of the 52APT secondary circuit breaker is correct and can meet the standby automatic power-on conditions.

[0047] like Figure 2 As shown in this embodiment of the invention, a system for preventing misoperation of PT secondary circuit breakers in operation tickets is provided, comprising: The initialization classification storage container unit 110 is used to initialize multiple key-value pair containers, which are used to store operation items of various specified device types; wherein, the various specified device types include switches, trolleys, pressure plates and voltage parallel conversion handles, and the operation item of each specified device type includes a device identifier and an operation verb; The operation ticket parsing and classification storage unit 120 is used to obtain operation tickets and identify the busbars whose operating status has changed to maintenance status or hot standby status from the operation tasks of the operation tickets as the busbars to be put into standby. Furthermore, it analyzes the operation steps of the operation ticket item by item, and sequentially extracts the operation items of each specified equipment type in each operation step and stores them into the corresponding key-value pair container until the information of the secondary circuit breaker of the busbar to be put into standby is found to have a disconnection action in a certain operation step. The key operation identification unit 130 is used to obtain the device number of the PT from the information of the PT to be put into operation, and determine the associated device and its operation item corresponding to the device number of the PT in combination with the operation steps of the operation ticket; wherein, the device type of the associated device is one of the multiple specified device types; The safety condition verification unit 140 is used to compare the operation items of the associated device with all key-value pairs of containers, and to determine whether the associated device has performed the required safety operation based on the comparison results, so as to prevent the PT secondary circuit breaker operation logic from being incorrect and failing to meet the backup power supply conditions.

[0048] The security condition verification unit 130 includes: The backup power supply condition satisfaction module is used to determine that the associated device has performed the required safety operation if the operation item of at least one associated device is found to exist in the matched key-value pair container, and to determine that the PT secondary circuit breaker operation logic is correct and can meet the backup power supply condition. The backup power supply condition not being met module is used to determine that if the operation items of all associated devices do not exist in their respective matching key-value pair containers, the associated devices have not performed the required safety operation, and the operation logic of the PT secondary circuit breaker is deemed to be erroneous and cannot meet the backup power supply condition.

[0049] Wherein, when the specified device type is a switch, its operation verbs include closing and opening; when the specified device type is a trolley, its operation verbs include testing and maintenance; when the specified device type is a pressure plate, its operation verbs include engaging and disengaging; when the specified device type is a parallel changeover handle, its operation verb is parallel.

[0050] The associated equipment includes a main transformer low-voltage switch, a main transformer low-voltage switch trolley, a backup automatic transfer switch main function pressure plate, a main transformer low-voltage switch tripping pressure plate in the backup automatic transfer switch panel, a corresponding main transformer low-voltage switch maintenance pressure plate in the backup automatic transfer switch panel, a corresponding sectionalizing switch tripping pressure plate in the backup automatic transfer switch panel, a corresponding sectionalizing switch locking pressure plate in the backup automatic transfer switch panel, and a PT parallel conversion handle.

[0051] Implementing the embodiments of the present invention has the following beneficial effects: This invention transforms manual experience into an automatically executed "storage-retrieval-judgment" procedure. It performs mandatory safety audits on the operational logic involving PT secondary circuit breakers to prevent human error. Through categorized storage and system verification, it systematically covers all safety paths, achieving automation of the audit process and consistency of judgment results. This ensures the reliability of audit conclusions and enables automatic and reliable determination of whether the conditions for automatic backup power transfer are met. It not only overcomes the problems of poor detection reliability and low efficiency of existing manual audit operation tickets, but also technically eliminates the risk of malfunction of automatic backup power transfer due to human error.

[0052] It is worth noting that the various system modules included in the above system embodiments are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be achieved; in addition, the specific names of each functional module are only for easy differentiation and are not used to limit the scope of protection of the present invention.

[0053] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as ROM / RAM, disk, optical disk, etc.

[0054] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A method for verifying the operation of secondary circuit breakers (PTs) in operation tickets to prevent misoperation, characterized in that, The method includes the following steps: Initialize multiple key-value pair containers to store operation items for various specified device types; wherein, the various specified device types include switches, trolleys, pressure plates, and voltage parallel conversion handles, and each operation item for a specified device type includes a device identifier and an operation verb; Obtain the operation ticket, and identify the busbar whose operating status has changed to maintenance status or hot standby status as the standby busbar from the operation tasks of the operation ticket. Then, analyze the operation steps of the operation ticket item by item, and extract the operation items of each specified equipment type in each operation step in sequence and store them into the corresponding key-value pair container until the information of the secondary circuit breaker of the standby busbar PT is disconnected in a certain operation step. From the information of the PTs to be put into operation, obtain the PT's equipment number, and in conjunction with the operation steps of the operation ticket, determine the associated equipment and its operation items corresponding to the PT's equipment number; wherein, the equipment type of the associated equipment is one of the multiple specified equipment types; The operation items of the associated device are compared with all key-value pairs of containers, and the comparison results are used to determine whether the associated device has performed the required safety operation. This is to prevent the PT secondary circuit breaker operation logic from being incorrect and failing to meet the backup power supply conditions.

2. The method for preventing misoperation of the PT secondary circuit breaker in the operation ticket as described in claim 1, characterized in that, The specific steps for analyzing each operation step of the operation ticket, extracting the operation items of each specified equipment type in each operation step sequentially and storing them in the corresponding key-value pair container, until the analysis reveals that the secondary circuit breaker of the standby bus PT has tripped in a certain operation step, include: The operation steps of the operation ticket are analyzed item by item in a top-down order. The equipment type and the corresponding equipment number and operation verb in each operation step are identified. Each equipment type is matched with all key-value pair containers. Furthermore, the equipment number and operation verb corresponding to each equipment type are formed into operation items and stored in the matched key-value pair container. When the analysis detects that a backup busbar PT is detected in a certain operation step and that the secondary circuit breaker of the PT is disconnected in its sub-operation step, the analysis of subsequent operation steps of the backup busbar PT is stopped, and all key-value pair containers are saved.

3. The method for preventing misoperation of the PT secondary circuit breaker in the operation ticket as described in claim 1, characterized in that, The specific steps for comparing the operation items of the associated device with all key-value pairs of containers, and determining whether the associated device has performed the required safety operation based on the comparison results, to prevent the PT secondary circuit breaker operation logic from being erroneous and failing to meet the backup power supply conditions, include: From all the key-value pair containers, based on the device type of each associated device, obtain the key-value pair containers that match each associated device. If at least one associated device's operation item is found to exist in the matched key-value pair container, it is determined that the associated device has performed the required safety operation, and the PT secondary circuit breaker operation logic is considered correct and can meet the backup power supply conditions. If the comparison shows that the operation items of all associated devices do not exist in their respective matching key-value pair containers, it is determined that the associated devices have not performed the required safety operations, and the operation logic of the PT secondary circuit breaker is deemed to be incorrect and cannot meet the conditions for automatic power supply.

4. The method for preventing misoperation of the PT secondary circuit breaker in the operation ticket as described in claim 3, characterized in that, The associated equipment includes a main transformer low-voltage switch, a main transformer low-voltage switch trolley, a backup automatic transfer switch main function pressure plate, a main transformer low-voltage switch tripping pressure plate in the backup automatic transfer switch panel, a corresponding main transformer low-voltage switch maintenance pressure plate in the backup automatic transfer switch panel, a corresponding sectionalizing switch tripping pressure plate in the backup automatic transfer switch panel, a corresponding sectionalizing switch locking pressure plate in the backup automatic transfer switch panel, and a PT parallel conversion handle.

5. The method for preventing misoperation of the PT secondary circuit breaker in the operation ticket as described in claim 1, characterized in that, When the specified device type is a switch, its operation verbs include closing and opening; when the specified device type is a trolley, its operation verbs include testing and maintenance; when the specified device type is a pressure plate, its operation verbs include engaging and disengaging; when the specified device type is a parallel changeover handle, its operation verb is parallel.

6. A system for verifying the operation of secondary circuit breakers (PTs) in operation tickets to prevent misoperation, characterized in that, include: An initialization category storage container unit is used to initialize multiple key-value pair containers, which are used to store operation items of various specified device types; wherein, the various specified device types include switches, trolleys, pressure plates and voltage parallel conversion handles, and the operation item of each specified device type includes a device identifier and an operation verb; The operation ticket parsing and classification storage unit is used to obtain operation tickets and identify the busbars whose operating status has changed to maintenance status or hot standby status as standby buses from the operation tasks of the operation tickets. Furthermore, the operation steps of the operation tickets are analyzed item by item to extract the operation items of each specified equipment type in each operation step and store them into the corresponding key-value pair container until the information of the secondary circuit breaker of the standby busbar PT is disconnected in a certain operation step. The key operation identification unit is used to obtain the device number of the PT from the information of the PT to be put into operation, and determine the associated device and its operation item corresponding to the device number of the PT in combination with the operation steps of the operation ticket; wherein, the device type of the associated device is one of the multiple specified device types; The safety condition verification unit is used to compare the operation items of the associated device with all key-value pairs of containers, and to determine whether the associated device has performed the required safety operation based on the comparison results, in order to prevent the PT secondary circuit breaker operation logic from being incorrect and failing to meet the backup power supply conditions.

7. The system for preventing misoperation of PT secondary circuit breakers in operation tickets as described in claim 6, characterized in that, The security condition verification unit includes: The backup power supply condition satisfaction module is used to determine that the associated device has performed the required safety operation if the operation item of at least one associated device is found to exist in the matched key-value pair container, and to determine that the PT secondary circuit breaker operation logic is correct and can meet the backup power supply condition. The backup power supply condition not being met module is used to determine that if the operation items of all associated devices do not exist in their respective matching key-value pair containers, the associated devices have not performed the required safety operation, and the operation logic of the PT secondary circuit breaker is deemed to be erroneous and cannot meet the backup power supply condition.

8. The system for preventing misoperation of PT secondary circuit breakers in operation tickets as described in claim 6, characterized in that, When the specified device type is a switch, its operation verbs include closing and opening; when the specified device type is a trolley, its operation verbs include testing and maintenance; when the specified device type is a pressure plate, its operation verbs include engaging and disengaging; when the specified device type is a parallel changeover handle, its operation verb is parallel.

9. The system for preventing misoperation of PT secondary circuit breakers in operation tickets as described in claim 6, characterized in that, The associated equipment includes a main transformer low-voltage switch, a main transformer low-voltage switch trolley, a backup automatic transfer switch main function pressure plate, a main transformer low-voltage switch tripping pressure plate in the backup automatic transfer switch panel, a corresponding main transformer low-voltage switch maintenance pressure plate in the backup automatic transfer switch panel, a corresponding sectionalizing switch tripping pressure plate in the backup automatic transfer switch panel, a corresponding sectionalizing switch locking pressure plate in the backup automatic transfer switch panel, and a PT parallel conversion handle.

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