Power system work permit-free operation safety inspection method, device, system and storage device

Abstract

The present invention provides a safety inspection method, device, system and storage device for working without a work ticket in a power system, belonging to the technical field of on-site operation safety management of power systems. The method obtains power outage and power restoration events, determines the power grid lines to which the power outage and power restoration events belong, obtains the address information of associated devices on the power grid lines to which the power outage and power restoration events belong, and the time when the power outage and power restoration events occur. A set of digital work tickets is obtained from the digital work ticket storage system, the set of digital work tickets is traversed, and the power outage and power restoration events are associated and matched with the digital work tickets. If the matching result N≥1, the troubleshooting operation of the power outage and power restoration event is a compliant operation with a work ticket; if the matching result N<1, the troubleshooting operation of the power outage and power restoration event is an illegal operation of working without a work ticket. This method can monitor operations without work tickets both during and after the event, improving the safety management level of power systems.

Description

Technical Field

[0001] The present invention belongs to the technical field of on-site operation safety management of power systems, and particularly relates to a safety inspection method, device, system and storage device for operating without a work permit in a power system. Background Art

[0002] The management requirements of the power safety regulations stipulate that corresponding work permits must be available for all types of on-site operations. For on-site operations without work permits, the safety control measures are not in place, which are prone to causing personal and equipment safety risks. This situation belongs to serious violation behaviors.

[0003] Currently, power safety inspection personnel go to on-site operations in various places for surprise inspections, notify and punish on-site operation sites without work permits, which requires a large amount of manpower and material resources, and it is very difficult to detect. The violation behaviors of operating without work permits continue despite repeated bans. Because there are numerous and scattered power operation sites, some inspection and maintenance operations have short durations, and the number of power safety inspection personnel is limited. If the behavior of operating without a work permit cannot be promptly detected by safety inspection personnel, then this violation behavior will not be discovered and is also difficult to trace. Over time, under the influence of the psychology of taking chances, the violation behavior of operating without a work permit cannot be effectively prohibited, which is not conducive to power safety management work. Summary of the Invention

[0004] In view of this, the present invention provides a safety inspection method, device, system and storage device for operating without a work permit in a power system to solve the technical problem in the prior art that if the behavior of operating without a work permit cannot be promptly detected by safety inspection personnel, then this violation behavior will not be discovered and is also difficult to trace, which is not conducive to power safety management work.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0006] A safety inspection method for operating without a work permit in a power system includes the following steps:

[0007] Obtain power-on and power-off events;

[0008] Judge the power grid line to which the power-on and power-off events belong;

[0009] Obtain the address information of the associated devices on the power grid line to which the power-on and power-off events belong;

[0010] Obtain the time [t 1 , t 2 when the power-on and power-off events occur, where t 1 is the start time of the power-off event, and t 2 is the end time of the power-off event; when the power-on and power-off events are not processed yet, t 2 is the current time;

[0011] Obtain a set of digital work tickets from the digital work ticket storage system; wherein, the digital work ticket storage system stores all digital work tickets within the jurisdiction area, and the digital work tickets include work address information and work time information;

[0012] Traverse the set of digital work tickets, and perform associated matching between the power-on / off event and the digital work tickets according to the address information of the associated device and the work address information, and the occurrence time of the power-on / off event and the work time information;

[0013] Obtain the matching result N;

[0014] Judge whether the matching result N is ≥1;

[0015] If the matching result N≥1, then the troubleshooting operation of the power-on / off event is a compliant operation with a work ticket;

[0016] If the matching result N<1, then the troubleshooting operation of the power-on / off event is an illegal operation without a work ticket.

[0017] Preferably, the step of "judging the power grid line of the power-on / off event" includes the following steps:

[0018] Start power-on / off analysis;

[0019] Obtain the power grid lines and the corresponding distribution transformers on each power grid line;

[0020] Taking the power grid line as a reference, traverse the corresponding distribution transformers on each power grid line, and obtain the event information of the distribution transformers and the time node information of the event occurrence;

[0021] Judge whether there are the same event information and time node information of N distribution transformers on the same power grid line A, where N≥3;

[0022] If there are the same event information and time node information of N distribution transformers on the same power grid line A, then this power grid line A is the power grid line to which the power-on / off event belongs.

[0023] Preferably, the step of "judging the power grid line of the power-on / off event" further includes the following steps:

[0024] Obtain the operation information of key equipment on the power grid line A;

[0025] Judge whether there is current≤0, voltage≤0 or power≤0 of the key equipment on the power grid line A during the occurrence time of the power-on / off event;

[0026] If there is current≤0, voltage≤0 or power≤0 of the key equipment on the power grid line A during the occurrence time of the power-on / off event, then confirm that this power grid line A is the power grid line to which the power-on / off event belongs.

[0027] Preferably, in the step of "traversing the set of digital work tickets and associating and matching the power-on and power-off events with the digital work tickets according to the address information of the associated device, the operation address information, and the power-on and power-off event occurrence time and the operation time information", the following steps are included:

[0028] Judge whether (t 1 -Δt) ≤ t 3 ≤ t 2 , where 0 ≤ Δt ≤ 5, and t 3 is the time when the work ticket is issued;

[0029] If so, judge whether the operation address information is the same as the address information of the associated device;

[0030] If so, the matching result N = N + 1.

[0031] Preferably, the safety inspection method for work ticketless operation in the power system further includes the following steps:

[0032] When the matching result < 1, judge whether the current power-on and power-off event has been processed;

[0033] If the current power-on and power-off event has been processed, a trace record report is formed;

[0034] If the current power-on and power-off event has not been processed, an inspection instruction report is formed.

[0035] A safety inspection system for work ticketless operation in a power system includes:

[0036] An event acquisition module, configured to acquire power-on and power-off events;

[0037] A first judgment module, configured to judge the power grid line to which the power-on and power-off event belongs;

[0038] An associated device address acquisition module, configured to acquire the address information of the associated device on the power grid line to which the power-on and power-off event belongs;

[0039] An event acquisition module, configured to acquire the occurrence time [t1, t2] of the power-on and power-off event, where t1 is the start time of the power-off event and t2 is the end time of the power-off event; when the power-on and power-off event has not been processed, t2 is the current time;

[0040] A work ticket set acquisition module, configured to acquire a set of digital work tickets from a digital work ticket storage system; wherein, the digital work ticket storage system stores all digital work tickets within the jurisdiction area, and the digital work tickets include operation address information and operation time information;

[0041] An association matching module, configured to traverse the set of digital work tickets, and perform association matching between the power-on / off event and the digital work tickets according to the address information of the associated device, the work address information, the occurrence time of the power-on / off event, and the work time information;

[0042] A matching result acquisition module, configured to acquire the matching result N;

[0043] A second judgment module, configured to judge whether the matching result N is ≥1;

[0044] If the matching result N≥1, the troubleshooting operation of the power-on / off event is a compliant operation with a work ticket;

[0045] If the matching result N<1, the troubleshooting operation of the power-on / off event is an illegal operation without a work permit.

[0046] Preferably, it further includes:

[0047] A third judgment module, configured to judge whether the current power-on / off event has been processed when the matching result <1;

[0048] A trace record report formation module, configured to form a trace record report when the current power-on / off event has been processed;

[0049] An inspection instruction report formation module, configured to form an inspection instruction report when the current power-on / off event has not been processed.

[0050] A safety inspection device for power system operation without a work permit, comprising:

[0051] A processor; and

[0052] A memory, configured to store program instructions that, when executed by the processor, cause the processor to execute the safety inspection method for power system operation without a work permit as described above.

[0053] A computer-readable storage medium stores program instructions that, when executed by a processor, cause the processor to execute the dynamic scheduling method for power safety inspectors as described above.

[0054] As can be seen from the above technical solutions, the present invention provides a method, device, system and storage device for safety inspection of work ticketless operations in a power system. The beneficial effects are as follows: The power-on and power-off events are associated and matched with digital work tickets. If the matching result N≥1, it indicates that during the process of handling the corresponding power-on and power-off events, a compliant operation with a work ticket has been issued. If the matching result N<1, it indicates that no work ticket has been issued during the process of handling the corresponding power-on and power-off events, which belongs to a violation operation of work ticketless operations. By associating and matching the power-on and power-off events with digital work tickets, it is judged whether a digital work ticket has been issued during on-site operations. In this way, whether it is during or after the event, work ticketless operations can be monitored. If it is found that the ongoing on-site operation is a work ticketless operation, power safety inspection personnel can be dispatched to the operation site for safety inspection to stop the violation operation, achieve targeted inspection and reasonable dispatching, and reduce the workload of safety inspection personnel. In the present invention, the behavior of work ticketless operations can be traced retrospectively. That is, if no digital work ticket is matched for the completed on-site operation, it is considered that no work ticket was issued during the on-site operation, thereby tracing the responsibility of the personnel or team responsible for the on-site operation for violation operations, and further improving the safety management level of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 is a flowchart of a method for safety inspection of work ticketless operations in a power system. DETAILED DESCRIPTION OF THE INVENTION

[0056] The technical solutions and technical effects of the embodiments of the present invention will be further elaborated in detail below with reference to the drawings of the present invention.

[0057] Please refer to Figure 1 , in a specific embodiment, a method for safety inspection of work ticketless operations in a power system includes the following steps:

[0058] S10. Obtain power-on and power-off events.

[0059] S20. Judge the power grid line to which the power-on and power-off events belong;

[0060] S30. Obtain the address information of the associated devices on the power grid line to which the power-on and power-off events belong;

[0061] S40. Obtain the time [t 1 , t 2 when the power-on and power-off events occur, where t 1 is the start time of the power-off event, and t 2 is the end time of the power-off event; when the power-on and power-off events have not been processed yet, t 2 is the current time;

[0062] S50. Obtain a set of digital work tickets from the digital work ticket storage system; wherein, the digital work ticket storage system stores all digital work tickets within the jurisdiction area, and the digital work tickets include work address information and work time information;

[0063] S60. Traverse the set of digital work tickets, and perform associated matching on the power-on / off event and the digital work tickets according to the address information of the associated device and the work address information, and the occurrence time of the power-on / off event and the work time information;

[0064] S70. Obtain the matching result N;

[0065] S80. Determine whether the matching result N is ≥1;

[0066] If the matching result N≥1, then the troubleshooting operation of the power-on / off event is a compliant operation with a work ticket;

[0067] If the matching result N<1, then the troubleshooting operation of the power-on / off event is an illegal operation without a work ticket.

[0068] For example, in the above process, relevant data and information can be obtained by communicating with the already constructed relevant software and hardware. For example, the power-on / off events reported by user intelligent meters and distribution transformer master meters are obtained in real time through the existing power consumption information collection system of the distribution network. The load information (current, voltage, active power), switch position change information, and fault trip signal of the distribution line, transformer, and substation are obtained through distribution terminals such as DTU, FTU, distribution transformer integrated terminal, LTU, and transformer substation main protection of the distribution automation system. The power outage information, switch position change, trip, and power information of the distribution network outgoing line of the substation are obtained through the dispatching D5000 system. The business expansion work order information is obtained through the marketing SG186 system, and the distribution repair work order information is obtained from the 95598 system.

[0069] It should be noted that the sources of data and information can be indirectly obtained from the systems related to the monitoring and management of the existing power system, or directly obtained through the relevant hardware of the power system, which will not be elaborated below.

[0070] In the above steps, in step S20, the power-on / off event of the power grid line can be judged in various ways. In a preferred embodiment of the present invention, the following steps are included:

[0071] S21. Start the power-on / off analysis.

[0072] S22. Obtain the power grid lines and the corresponding distribution transformers on each power grid line.

[0073] S23. Based on the power grid line, traverse the corresponding distribution transformers on each power grid line, and obtain the event information of the distribution transformers and the time node information of the event occurrence.

[0074] S24. Determine whether there is event information and time node information of N distribution transformers on the same power grid line A being the same, where N ≥ 3. If there is event information and time node information of N distribution transformers on the same power grid line A being the same, then this power grid line A is the line to which the power outage and power restoration event belongs.

[0075] Specifically, start the analysis using the "power outage and power restoration event" of a single distribution transformer total meter, retrieve the distribution network graphics, data, and topological structure of the PMS system, find the affiliated line. If there are more than 3 distribution transformers on this line with "simultaneous power outage and simultaneous power restoration", and the power outage time is greater than 3 sampling periods (sampling one point every 15 minutes), then initially determine that this power grid line has a power outage. At the same time, analyze the power outage situation of the upstream line according to the line topology analysis, with the analysis method being the same as above. At the same time, classify the "power outage events" in the same time period by line, and the power outage situations of different lines in the same time period can be analyzed.

[0076] Furthermore, the step of "judging the power grid line to which the power outage and power restoration event belongs" further includes the following steps:

[0077] S25. Obtain the operation information of key equipment on power grid line A;

[0078] S26. Judge whether there is current ≤ 0, voltage ≤ 0, or power ≤ 0 for the key equipment on power grid line A during the time when the power outage and power restoration event occurs;

[0079] S27. If there is current ≤ 0, voltage ≤ 0, or power ≤ 0 for the key equipment on power grid line A during the time when the power outage and power restoration event occurs, then confirm that this power grid line A is the line to which the power outage and power restoration event belongs.

[0080] That is to say, through the verification of the operation data (such as current, voltage, power, position, tripping, etc.) of the line and equipment, if it is determined as "no voltage, no current, no power", it is used as one of the criteria for power outage. Based on the "power outage and power restoration event", the system can determine that this line has a power outage after verifying with more than one power outage information.

[0081] Preferably, in step S30, the address information of the associated equipment includes, but is not limited to, the real geographical location information, equipment number, etc. of the key equipment (such as distribution transformers, circuit breakers, fuses, disconnecting switches, etc.) on the power grid line to which the power outage and power restoration event belongs, which can clearly indicate the actual position of the key equipment. For example, the position of a certain distribution transformer can be represented by longitude and latitude, or by a number with address + serial number. It should be noted that the address information of the key equipment needs to be unique and non-repetitive with each other, so as to directly define the position of the key equipment when issuing a digital operation ticket.

[0082] In step S40, the time [t when the power outage and power restoration event occurs1 , t 2 , where t 1 is the start time of the power outage event, and t 2 is the end time of the power outage event; when the power outage and restoration event is not completed, t 2 is the current time. That is to say, t 1 ~t 2 During this time period, it is considered the actual occurrence period of on-site operations (including on-site construction operations, maintenance operations, and emergency repair operations). When the on-site operations have been completed, then t 1 ~t 2 is the complete time period. When the on-site operations are in progress, then t 2 is the current time.

[0083] In step S50, the digital work ticket can be constructed in at least the following two ways. First, after the offline paper work ticket is collected, it is sorted by a dedicated person into a digital work ticket with a unified format and archived in an electronic form such as a document. Second, from the application for issuing the work ticket to the end of the work ticket approval, through an online mode, online application, online signature, and online approval, a digital work ticket with a standard format is directly formed. In the present invention, the digital work ticket needs to include at least standardized work address information and work time information. Among them, the work time information can be the permitted work time information, the time when the work ticket is applied for and issued, the time when the work ticket is approved and completed, etc.

[0084] In a preferred embodiment, in step S60, the following steps are included:

[0085] S61. Determine whether (t 1 -Δt) ≤ t 3 ≤ t 2 , where 0 ≤ Δt ≤ 5, and t 3 is the work ticket issuing time;

[0086] S62. If so, then determine whether the work address information is the same as the address information of the associated device;

[0087] S63. If so, the matching result N = N + 1.

[0088] In this embodiment, taking the work ticket issuing time t 3 as a reference, first match whether the work ticket issuing time t 3 falls within the actual occurrence period t 1 ~t 2 of the on-site operations. Generally, if the work ticket is issued before the start of the on-site operations, then when matching, the actual occurrence period of the on-site operations is shifted forward by 0 - 5h. It should be noted that the calculation here is a time operation, so as to ensure that all possible digital work tickets can be effectively matched.

[0089] Taking the digital work tickets whose issuance time falls within (t 1 -Δt) to t 2 as samples, continue to perform correlation matching between the work address and the addresses of key equipment on the power grid line, and count the number of successfully matched digital work tickets.

[0090] In steps S70 and S80, obtain the matching result, that is, the number of successfully matched digital work tickets. Then, there are two results. If the matching result N≥1, it indicates that at least one digital work ticket has been issued for the corresponding power-on and power-off event, and further indicates that the corresponding on-site operation is a compliant operation with at least one issued digital work ticket. If the matching result N<1, that is, no issued digital work ticket is matched for the corresponding power-on and power-off event, it means that the on-site operation corresponding to this power-on and power-off event may be an illegal operation without an issued work ticket.

[0091] Furthermore, the safety inspection method for work ticketless operation in the power system further includes the following steps:

[0092] S90. When the matching result <1, determine whether the current power-on and power-off event has been processed;

[0093] If the current power-on and power-off event has been processed, a trace record report is formed;

[0094] If the current power-on and power-off event has not been processed, an inspection instruction report is formed.

[0095] That is to say, in the actual use process of the method provided by the present invention, if the matching result <1, that is, no digital work ticket is matched for the current power-on and power-off event. At this time, there are two situations. First, if the current power-on and power-off event has been processed, that is, the current on-site operation has ended, it is determined that the completed on-site operation is a work ticketless operation, and a trace record report is formed to trace the violation responsibilities of relevant personnel, thereby helping to reduce the probability of work ticketless operation and improve the safety management level. Second, if the current power-on and power-off event has not been processed, that is, the power grid line to which the power-on and power-off event belongs is still in a power-off state, it indicates that the on-site operation is in progress. At this time, an inspection instruction report is formed to facilitate relevant inspection personnel to go to the operation site for targeted and special inspections, reduce safety risks, and at the same time is conducive to the scientific allocation of power safety inspection forces.

[0096] In another specific embodiment of the present invention, a safety inspection system for work ticketless operation in the power system includes:

[0097] An event acquisition module for acquiring power-on and power-off events;

[0098] A first judgment module for judging the power grid line to which the power-on and power-off event belongs;

[0099] An associated device address acquisition module, configured to acquire the address information of associated devices on the power grid line to which the power-on and power-off event belongs;

[0100] An event acquisition module, configured to acquire the occurrence time [t1, t2] of the power-on and power-off event, where t1 is the start time of the power-off event and t2 is the end time of the power-off event; when the power-on and power-off event has not been processed and ended, t2 is the current time;

[0101] A work ticket set acquisition module, configured to acquire a set of digital work tickets from a digital work ticket storage system; wherein, the digital work ticket storage system stores all digital work tickets within the jurisdiction area, and the digital work tickets include work address information and work time information;

[0102] An associated matching module, configured to traverse the set of digital work tickets, and perform associated matching on the power-on and power-off event and the digital work tickets according to the address information of the associated devices and the work address information, and the occurrence time of the power-on and power-off event and the work time information;

[0103] A matching result acquisition module, configured to acquire a matching result N;

[0104] A second judgment module, configured to judge whether the matching result N is ≥1;

[0105] If the matching result N≥1, then the troubleshooting operation for the power-on and power-off event is a compliant operation with a work ticket;

[0106] If the matching result N<1, then the troubleshooting operation for the power-on and power-off event is an illegal operation without a work ticket.

[0107] Preferably, it further includes:

[0108] A third judgment module, configured to judge whether the current power-on and power-off event has been processed and completed when the matching result <1;

[0109] A trace record report formation module, configured to form a trace record report when the current power-on and power-off event has been processed and completed;

[0110] An inspection instruction report formation module, configured to form an inspection instruction report when the current power-on and power-off event has not been processed and completed.

[0111] For the specific limitations of the safety inspection system for working without a work ticket in the power system, reference can be made to the limitations of the safety inspection method for working without a work ticket in the power system in the above text, which will not be elaborated here. Each module in the above dynamic dispatching system for power safety inspectors can be implemented in whole or in part through software, hardware, and their combinations. The above modules can be embedded in the processor of the computer device in the form of hardware or be independent of it, or can be stored in the memory of the computer device in the form of software, so as to facilitate the processor to call and execute the operations corresponding to the above respective modules.

[0112] A safety inspection device for working without a work permit in a power system, comprising:

[0113] A processor; and

[0114] A memory for storing program instructions that, when executed by the processor, cause the processor to execute the safety inspection method for working without a work permit in the power system as described above.

[0115] A computer-readable storage medium stores program instructions that, when executed by a processor, cause the processor to execute the dynamic scheduling method for power safety inspectors as described above.

[0116] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the invention.

Claims

1. A safety inspection method for working without a work ticket in a power system, characterized in that, it includes the following steps: Obtain power-on and power-off events; Judge the power grid line to which the power-on and power-off event belongs; Obtain the address information of the associated equipment on the power grid line to which the power-on and power-off event belongs; Obtain the occurrence time of power-off and power-on events [t 1 , t 2 , where t 1 is the start time of the power-off event, and t 2 is the end time of the power-off event; when the power-off and power-on events are not processed and ended, t 2 is the current time; Obtain the digital work ticket set from the digital work ticket storage system; wherein, the digital work ticket storage system stores all digital work tickets within the jurisdiction area, and the digital work ticket includes work address information and work time information; Traverse the digital work ticket set, and perform associated matching on the power-on and power-off event and the digital work ticket according to the address information of the associated equipment and the work address information, and the power-on and power-off event occurrence time and the work time information; Obtain the matching result N; Judge whether the matching result N is ≥1; If the matching result N≥1, then the troubleshooting operation of the power-on and power-off event is a compliant operation with a work ticket; If the matching result N<1, then the troubleshooting operation of the power-on and power-off event is an illegal operation of working without a work ticket; The step "judge the power grid line of the power-on and power-off event" includes the following steps: Start power-on and power-off analysis; Obtain the power grid lines and the corresponding distribution transformers on each power grid line; Taking the power grid line as a reference, traverse the corresponding distribution transformers on each power grid line, and obtain the event information of the distribution transformer and the time node information of the event occurrence; Judge whether there are N distribution transformers with the same event information and the same time node information of the event occurrence on the same power grid line A, where N≥3; If there are N distribution transformers with the same event information and the same time node information of the event occurrence on the same power grid line A, then the power grid line A is the line to which the power-on and power-off event belongs.

2. The safety inspection method for working without a work ticket in a power system according to claim 1, characterized in that, The step "judge the power grid line of the power-on and power-off event" further includes the following steps: Obtain the operation information of the key equipment on the power grid line A; Judge whether there is current≤0, voltage≤0 or power≤0 for the key equipment on the power grid line A during the power-on and power-off event occurrence time; If there is current≤0, voltage≤0 or power≤0 for the key equipment on the power grid line A during the power-on and power-off event occurrence time, then confirm that the power grid line A is the line to which the power-on and power-off event belongs.

3. The safety inspection method for working without a work ticket in a power system according to claim 1, characterized in that, In the step "traverse the digital work ticket set, and perform associated matching on the power-on and power-off event and the digital work ticket according to the address information of the associated equipment and the work address information, and the power-on and power-off event occurrence time and the work time information", it includes the following steps: Determine whether (t 1 -Δt) ≤ t 3 ≤ t 2 , where 0 ≤ Δt ≤ 5, and t 3 is the time when the work permit is issued; If so, then judge whether the work address information is the same as the address information of the associated equipment; If so, then the matching result N=N + 1.

4. The safety inspection method for working without a work ticket in a power system according to claim 1, characterized in that, It further includes the following steps: When the matching result <1, judge whether the current power-on and power-off event has been processed; If the current power-on and power-off event has been processed, then form a trace record report; If the current power-on and power-off event has not been processed, then form an inspection instruction report.

5. A safety inspection system for working without a work ticket in a power system, characterized in that, it includes: An event acquisition module, configured to acquire power-on and power-off events; A first judgment module, configured to judge the power grid line to which the power-on and power-off event belongs; An associated device address acquisition module, configured to acquire the address information of the associated devices on the power grid line to which the power-on and power-off event belongs; An event acquisition module for acquiring the occurrence time [t 1 , t 2 , where t 1 is the start time of the power outage event, and t 2 is the end time of the power outage event; when the power-on / off event is not processed and ended, t 2 is the current time; A digital work ticket set acquisition module, configured to acquire a digital work ticket set from a digital work ticket storage system; wherein, the digital work ticket storage system stores all digital work tickets within the jurisdiction area, and the digital work tickets include work address information and work time information; An associated matching module, configured to traverse the digital work ticket set, and perform associated matching on the power-on and power-off event and the digital work tickets according to the address information of the associated devices and the work address information, and the power-on and power-off event occurrence time and the work time information; A matching result acquisition module, configured to acquire a matching result N; A second judgment module, configured to judge whether the matching result N is ≥1; If the matching result ≥1, the troubleshooting operation of the power-on and power-off event is a compliant operation with a work ticket; If the matching result <1, the troubleshooting operation of the power-on and power-off event is an illegal operation without a work ticket; Among them, judging the power grid line to which the power-on and power-off event belongs includes: Starting power-on and power-off analysis; Acquiring the power grid lines and the corresponding distribution transformers on each power grid line; Taking the power grid line as a reference, traversing the corresponding distribution transformers on each power grid line, and acquiring the event information of the distribution transformers and the time node information of the event occurrence; Judging whether there are the same event information and event occurrence time node information of N distribution transformers on the same power grid line A, where N≥3; If there are the same event information and event occurrence time node information of N distribution transformers on the same power grid line A, then the power grid line A is the line to which the power-on and power-off event belongs.

6. The power system work ticketless operation safety inspection system according to claim 5, characterized in that it further includes: A third judgment module, configured to judge whether the current power-on and power-off event has been processed when the matching result <1; A trace record report forming module, configured to form a trace record report when the current power-on and power-off event has been processed; An inspection instruction report forming module, configured to form an inspection instruction report when the current power-on and power-off event has not been processed.

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