Intelligent unlocking authorization method for power distribution network based on task and management security

Abstract

The present invention discloses a method for intelligent unlocking authorization of power distribution network based on task and management security, comprising the following steps: S1. Aggregation of distribution network unlocking authorization application scenarios, construction of distribution network unlocking authorization application scenario model according to application scenario business elements, and formulation of application scenario rules; S2. Refined management of power distribution network ledgers, introduction of ledger changes and ledger cancellations regarding lock keys into process engine management; S3. Monitoring of the entire process of distribution network unlocking authorization tasks, through full-node monitoring of unlocking authorization tasks, and strategy analysis throughout the entire unlocking authorization task operation; S4. Visual display of unlocking authorization based on map layers, and operation of unlocking authorization task scenarios through visual guidance of map layers. The present invention supports multiple scenarios of distribution network unlocking authorization, and monitors the entire process from pre-planning, in-process supervision, and post-analysis of authorization to unlocking, thereby ensuring the improvement of the intelligent operation level of on-site operators, and presenting multi-dimensional visualization effects based on information displayed on map layers.

Description

Technical Field

[0001] The present invention belongs to the field of novel electric power technology, and in particular relates to an intelligent unlocking authorization method for an electric power distribution network based on task and management security. Background Art

[0002] The power distribution network is crucial to the entire power grid and serves as its foundation. Improving distribution network engineering can streamline its structure, thereby enhancing power supply reliability and safe operation. Distribution networks have numerous application scenarios, including rapid power restoration, low-voltage inspections, medium-voltage inspections, maintenance, testing, acceptance, medium-voltage emergency repairs, electronic handover, power room monitoring, and operations. These applications vary in scope, objectives, and rationale.

[0003] How to combine the myriad distribution network application scenarios, leveraging their commonalities while retaining their uniqueness and integrating them into a synergistic application is a new challenge facing the power system. Furthermore, while the same or overlapping work content exists at the same line station, the execution of work orders or tasks remains singular, lacking a unified, holistic concept. Even within the same application scenario, tasks preceding and following receipt are still executed sequentially.

[0004] In the current operational model, operators focus solely on their individual tasks, lacking a unified operational path for the entire line station, work team, power supply station, or district bureau, resulting in a significant waste of resources. Traditional information presentation methods primarily simply list and summarize results after the fact, failing to demonstrate a three-dimensional perspective and collaborative work. On-site management of power distribution network operations is challenging, posing safety risks such as human error and unauthorized entry. Furthermore, given the numerous and complex application scenarios of distribution networks, the old model of executing operations based on single tasks cannot meet the ever-changing demands of on-site operation scheduling.

[0005] The existing methods for unlocking authorization in power distribution networks currently have the following main problems: (1) The problem of clustering application scenarios. The current scenarios face different business scenarios, which makes it difficult to unify the data source, unify the application methods, and present data information. (2) The online management security of locks and key ledgers is not complete. It is impossible to centrally manage the lock and key ledgers of the distribution network and cannot meet the cross-network topology display of the distribution network production management ledger. (3) The monitoring of the unlocking authorization application process is single, and there is a lack of relevant work information push before, during, and after the execution of personal unlocking authorization tasks. (4) The degree of visualization is not high, the information presentation form is monotonous, there is a lack of pre-forecasting, in-process monitoring and post-analysis, and there is a lack of visual display of valuable knowledge. Summary of the Invention

[0006] The purpose of the present invention is to overcome the shortcomings and deficiencies of the existing technology and provide a method for intelligent unlocking authorization of power distribution network based on task and management security, which makes full use of artificial intelligence, Internet of Things, big data analysis, GIS and other technologies to group various application scenarios and perform unlocking authorization task operations guided by map layers.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] A power distribution network intelligent unlocking authorization method based on task and management security includes the following steps:

[0009] S1. Collect distribution network unlocking authorization application scenarios, build a distribution network unlocking authorization application scenario model based on the business elements of the application scenarios, and formulate application scenario rules;

[0010] S2. Implement refined management of the power distribution network ledger, introducing changes and cancellations of lock and key records into the process engine management;

[0011] S3. Monitoring the entire process of unlocking authorization tasks on the distribution network. Through full node monitoring of unlocking authorization tasks, strategy analysis is carried out throughout the entire unlocking authorization task operation.

[0012] S4. Visual display of unlocking authorization based on the map layer. Through the visual guidance of the map layer, the unlocking authorization task scenario operation is carried out.

[0013] Preferably, the scenario business elements include time, place, basis, person and equipment, and constructing the distribution network unlocking authorization application scenario model includes scenario element time modeling, scenario element location modeling, scenario element basis modeling, scenario element person modeling and scenario element equipment modeling.

[0014] Preferably, the application scenario rules specifically include: scenario element mutual connection rules, scenario element value range rules, and scenario element business node flow rules.

[0015] Preferably, the power distribution network ledger is managed in a refined manner, and the changes and cancellations of the lock key ledger are introduced into the process engine management, specifically:

[0016] The change of the ledger is initiated by the operation team member or team leader, who submits a ledger change application form to determine whether it exceeds the maintenance scope. If it does not exceed the scope, it will be approved by the team leader. Otherwise, it will be approved by the district bureau approval personnel. After approval, the ledger change will officially take effect;

[0017] The rule for determining if the application exceeds the maintenance scope is: if the organization to which the applicant belongs is in the same district bureau as the organization to which the ledger belongs, the application form will be transferred to the team leader of the organization to which the ledger belongs for approval; otherwise, the application form will be transferred to the approval personnel of the district bureau of the organization to which the ledger belongs for approval;

[0018] The cancellation of the ledger is initiated by the operation team member or team leader, who submits a ledger cancellation application form, which is reviewed and approved by the power supply station or department personnel. After approval, the cancellation of the ledger officially takes effect.

[0019] Preferably, the whole process monitoring of the distribution network unlocking authorization task starts from the task content itself, utilizes the task library collected in the whole application scenario of the distribution network, adopts a big data analysis strategy, and relies on time-related and space-related rules. The strategy analysis runs through the whole process of the operation, including pre-planning, in-process monitoring and post-analysis. The time is intercepted on the same day or the end time period from the start to the completion. The space is based on the geographical distribution and topological relationship of the equipment ledger in GIS.

[0020] Preferably, the big data analysis strategy adopted for monitoring the entire process of the distribution network unlocking authorization task is:

[0021] Pre-planning uses text similarity recognition technology based on the task library and task content to output processable data; in-process monitoring uses text similarity recognition technology based on time and space rules and task content to output monitoring data; in-process monitoring uses big data analysis technology based on monitoring data and task content to output statistical analysis information.

[0022] Preferably, the whole process monitoring of the distribution network unlocking authorization task adopts a text similarity recognition algorithm, and the text similarity recognition algorithm adopts the fastText model. The fastText model includes an input layer, a hidden layer and an output layer. The input layer inputs word vectors, the output layer outputs labels, and the hidden layer superimposes and averages multiple word vectors.

[0023] Preferably, the fastText model uses the hierarchical Softmax technique, which is based on Huffman coding and encodes labels, which can greatly reduce the number of model prediction targets.

[0024] Preferably, the fastText model utilizes category imbalance by using the Huffman algorithm to establish a tree structure for representing categories, and the depth of the tree structure for frequently occurring categories is smaller than the depth of the tree structure for infrequently occurring categories.

[0025] Preferably, the map layer relies on GIS technology, and adds quick search, positioning, and navigation functions to the map layer through the relationship between the equipment center and the equipment, the relationship between the line station and the equipment, and the relationship between the work task and the location. The map layer includes:

[0026] The map area displays the power room equipment within 1 km of the current user's location by default. The latitude and longitude of the current user's location and the distance to the surrounding area are input. The GIS returns the latitude and longitude and draws a point on the map for highlighting.

[0027] The search area allows users to quickly find and locate locations on the map. Searches can be made by device name, feeder, or substation. Searches by device name only display a list of devices that meet the criteria. Searches by feeder or substation have two meanings: in addition to searching for feeders and substations that meet the criteria, they also display the electrical equipment attached to the feeders and substations.

[0028] The task management area is mainly used to facilitate users to view their upcoming tasks and completed tasks, and to create tasks based on maps and devices. The creation process has a reference and is less prone to errors.

[0029] The nearby equipment area displays equipment synchronously with the equipment in the map area. Its expanded dimension is in list form. In addition to providing management of ledgers and tasks, it can also navigate to the power room of the operation task.

[0030] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0031] 1. By building a distribution network unlocking authorization application scenario model and establishing an adaptation rule library, the integration of multiple application scenarios is solved, a unified standard for data sources from different channels is established, the goal of unified application and management of business scenarios is achieved, and a closed process loop from modeling to final ownership is formed for the entire scenario.

[0032] 2. Ledger changes and ledger cancellations are included in the power distribution network ledger asset management to achieve refined management and control of distribution network assets, ensure the safety of lock key use, prevent outsiders from illegally entering by exploiting loopholes in ledger management, ensure the validity of the ledger, and have references before and after changes, and a basis for subsequent tracing.

[0033] 3. Through full-node monitoring of unlocking authorization tasks, text similarity technology is introduced in the pre-node to reduce operational risks and safety hazards caused by negligence of personal focus of operators. In-process supervision judges whether the operator's behavior has or will have abnormalities. Afterwards, the results of the operator's behavior are analyzed and summarized, and any abnormal behaviors are summarized.

[0034] 4. Visual guidance combined with map layers allows on-site workers to have a wider perspective during operations. Map-based scene operations more vividly and accurately express the overall process of unlocking and authorization during user operations at the distribution network site. Using information models as a carrier, valuable knowledge information is presented, delivered, archived, and shared, facilitating work collaboration. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The flowchart of the intelligent unlocking authorization method for power distribution network based on task and management security is shown in the figure.

[0036] Figure 2Schematic diagram of the entire process monitoring of the distribution network unlocking authorization task.

[0037] Figure 3 This is a schematic diagram of unlocking authorization based on the map layer.

[0038] Figure 4 This is a schematic diagram of unlocking authorization based on the map layer. DETAILED DESCRIPTION

[0039] The following is a further description of the power distribution network intelligent unlocking authorization method based on task and management security of the present invention in conjunction with the accompanying drawings and specific embodiments.

[0040] See also Figure 1 The present invention discloses a power distribution network intelligent unlocking authorization method based on task and management security, comprising the following steps:

[0041] S1. Collect the application scenarios of distribution network unlocking authorization, build the application scenario model of distribution network unlocking authorization based on the business elements of the application scenarios, and formulate application scenario rules.

[0042] S2. Carry out refined management of the power distribution network ledger, and introduce the changes and cancellations of lock keys into the process engine management.

[0043] S3. Monitoring of the entire process of unlocking authorization tasks in the distribution network. Through full node monitoring of unlocking authorization tasks, strategy analysis runs through the entire unlocking authorization task operation.

[0044] S4. Visual display of unlocking authorization based on the map layer. Through the visual guidance of the map layer, the unlocking authorization task scenario operation is carried out.

[0045] The present invention utilizes artificial intelligence, Internet of Things, big data analysis, GIS (geographic information system) technology, adopts informatization, power automation, communication encryption and other means, and achieves multi-scenario support for distribution network unlocking authorization through the application of the power distribution network unlocking authorization intelligent system, covering the collection and pooling management of all scenarios including rapid power restoration, low-voltage inspection, medium-voltage inspection, maintenance, testing, acceptance, medium-voltage emergency repair, electronic handover, power room monitoring, and operation. It controls the entire process from pre-planning, in-process supervision, and post-analysis of authorization to unlocking, integrates and optimizes resources on the line, ensures the improvement of the intelligent operation level of on-site operators, and presents a wider perspective and multi-dimensional visualization effect based on the annotation of relevant operation topology equipment, line association, operation tasks and line navigation on the map layer.

[0046] To ensure the application support of all scenarios of this invention, it is inseparable from the collection of data and information of existing known business scenarios to provide the data foundation of this system. How to collect the source data of business scenarios is not a simple accumulation and listing. It is not only about seeking common ground while reserving differences in business, but also taking into account the subsequent incremental application scenarios.

[0047] Based on the business elements of the application scenario, a distribution network unlocking authorization application scenario model is constructed. Scenario business elements include time, location, basis, person, and equipment. Building the distribution network unlocking authorization application scenario model involves modeling the time, location, basis, person, and equipment elements of the scenario. The scenario model is a centralized pooled representation of all scenarios, unifying the data formats of each application scenario.

[0048] Formulate application scenario rules, including rules for the interconnection between scenario elements, rules for the value range of scenario elements, and rules for the flow of business nodes of scenario elements. Define configuration and analysis rules for scenarios, including the connection between elements within the scenario, the value range of each element, and the flow of business nodes. Ultimately, the scenario model generates behavior to serve grassroots units. Modeling is suitable for constantly changing systems, ensuring that the system is stable and scalable to provide new functions. The existence of inheritance makes it easier to expand system functions. The specific application of scenarios requires grassroots units to claim them, so the scenario applications implemented at grassroots units are instances of a certain scenario or a set of instances of multiple scenarios.

[0049] Implement refined management of the power distribution network ledger, incorporating changes and cancellations of lock keys into the process engine. Lock keys are incorporated into asset management, and changes and cancellations, such as those affecting lock keys, are defined within the process management. This ensures that relevant personnel are involved in the ledger change process, ensuring the validity of the ledger and providing a basis for post-transaction tracing. Refined management of lock key changes and cancellations, along with the application of a process engine, strengthens the secure use of power distribution network ledger assets and prevents unauthorized access to power rooms by outsiders exploiting management loopholes.

[0050] The change of the ledger is initiated by the member or team leader of the operation team, who submits a ledger change application form. Changes to the ledger's affiliated organization, manufacturer parameters and other task attributes are considered changes to the ledger. It is determined whether it exceeds the maintenance scope. If it does not exceed the scope, it will be approved by the team leader. Otherwise, it will be approved by the district bureau approval personnel. After approval, the ledger change will officially take effect.

[0051] The judgment rule for exceeding the maintenance scope is: if the organization to which the applicant belongs and the organization to which the ledger belongs are in the same district bureau, the application form will be transferred to the team leader of the organization to which the ledger belongs for approval; otherwise, the application form will be transferred to the approval personnel of the district bureau of the organization to which the ledger belongs for approval.

[0052] If the key is lost, the cancellation of the ledger will be initiated by the operation team member or team leader, who will submit a ledger cancellation application form, which will be reviewed and approved by the power supply station or department personnel. After approval, the cancellation of the ledger will officially take effect.

[0053] The tasks issued by the power distribution network are signed by the terminal in the form of work orders or tasks. Usually, the operators cannot see from the content of the work orders or task orders that there is a continuation or immediate relationship with the current task. Any operation will bring operational risks and safety hazards, such as adjacent operations, operations near live parts, special patrols, special maintenance, hidden danger remediation, pre-tests or regular inspections related to risky equipment and other operation and maintenance strategies.

[0054] The present invention monitors the entire process of distribution network unlocking authorization tasks based on the task content itself, utilizing the task library collected from all application scenarios of the distribution network and adopting a big data analysis strategy. Relying on time-related and space-related rules, the strategy analysis runs through the entire process of the operation, including pre-planning, in-process monitoring and post-analysis. The time is intercepted on the same day or the time period from the start to the completion of the work, and the space is based on the geographical distribution and topological relationship of the equipment ledger in GIS.

[0055] Pre-planning is recommended and reasonable, preventing operators from engaging in non-compliant behavior or blindly following procedures. It tells users what to do, not what to do. In-process monitoring assesses operator behavior to determine if anomalies have occurred or are about to occur, essentially monitoring the operation. Post-analysis summarizes the results of operator behavior and summarizes any abnormalities.

[0056] like Figure 2 As shown in the figure, the big data analysis strategy adopted for the whole process monitoring of the distribution network unlocking authorization task is as follows: pre-planning is based on the task library and task content, using text similarity recognition technology to output processable data; in-process monitoring is based on time and space rules and task content, using text similarity recognition technology to output monitoring data; in-process monitoring is based on monitoring data and task content, using big data analysis technology to output statistical analysis information.

[0057] The entire process of unlocking authorization tasks in the distribution network is monitored using a text similarity recognition algorithm, using the fastText model. The fastText model consists of three layers: input, hidden, and output. The input layer inputs word vectors, the output layer outputs labels, and the hidden layer averages multiple word vectors. The fastText model uses a hierarchical softmax technique, based on Huffman coding, to encode labels, significantly reducing the number of prediction targets.

[0058] The fastText model also takes advantage of the fact that categories are unbalanced. By using the Huffman algorithm to build a tree structure for representing categories, the depth of the tree structure for frequently appearing categories is smaller than that for infrequently appearing categories, which further improves computational efficiency. The tasks that aggregate business scenarios are pre-processed to transform the original, separated, and unworkable data into clear, complete, and processable data, and to achieve matching from tasks to related data such as equipment, personnel, and locations, providing a data foundation for monitoring the entire process from unlocking to authorization. Figure 2 shown.

[0059] like Figure 3 and Figure 4 As shown, the guided unlocking authorization service based on the map layer is a wide-angle visualization presentation of the first three technologies: full-scene collection of distribution networks, full-process task monitoring, and ledger change and cancellation. The map layer relies on GIS technology. Through the relationship between the equipment center and the equipment, the relationship between the line station and the equipment, and the relationship between the work task and the location, quick search positioning and navigation functions are added to the map layer. The map layer is divided into four major areas: map area, search area, task management area, and nearby power room area. The map area displays the power room equipment within 1 km of the current user's location by default. The longitude and latitude of the current user's location and the distance to the surrounding area are input, and the longitude and latitude are returned by GIS and the points are drawn on the map for highlighting.

[0060] Among them, the map dot calling code is as follows:

[0061] / / Map dot

[0062] goMap(item){ / / let{lat,lng}=this.$route.query / / Current location let{gdLat,gdLng}=this.$localStorage.get('curentPosition') / / Current location

[0063] let{roomName}=this.roomDetail / / room information

[0064] this.gpsToGaoge(this.roomDetail.lng,this.roomDetail.lat]).then(res=>{

[0065] console.log(res);let url="

[0066] switch(item.name){case 'Amap':

[0067] url = 'amapuri: / / route / plan / ?sid=&slat=${gdLat}&slon=${gdLng}&sname=Current Location

[0068] &did=&dlat=${res.lat}&dlon=${res.lng}&dname=${roomName}&dev=0'

[0069] break; case 'Baidu Map':

[0070] url='baidumap: / / map / direction?origin=name:current location

[0071] |latlng:${gdLat},${gdLng}&destination=name:${roomName}latlng:${res.lat},

[0072] ${res.lng}&coord_type=gcj02&src=andr.companyName.appName'

[0073] break; case 'Tencent Map':

[0074] url = 'qqmap: / / map / routeplan?type=drive&from=current location&romcoord=${gdLat},${gdLng}'

[0075] &to=${roomName}&tocoord=${res.lat},${res.lng}&referer=OB4BZ-D4W3U-B7VVO-4PJW W-6TKDJ-WPB77'

[0076] break; default: break;}consle.log('jump address", url); this.showMap = false

[0077] if(url){window.location.href=url}).catch(()=>{console.log('Coordinate conversion failed');this.$toast('Coordinate conversion failed)

[0078] / / alert('Coordinate conversion failed')})}|

[0079] The code for adding map markers is as follows:

[0080] / / Add map markers

[0081] addMarker(data){this.removeMarker()let_this=this;let markerGroup=[]data.forEach((item,index)=>{

[0082] if(item.roomLng&&item.roomLat){let marker=new WebGIS.Graphics.Marker(

[0083] .setLngLat([item.roomLng,item.roomLat]) / / marker latitude and longitude

[0084] .setImage(this.markerIcon) / / Use image .setExtraData(item).addTo(window.HomeMap); / / Add

[0085] markerGroup.push(marker) / / Instantiate the layer let popup = newWebGIS.Graphics.Popup()

[0086] .setLngLat(item.roomLng,item.roomLat]) / / Set popup positioning

[0087] .setHTML(' <div id＝'home-marker-popup'> ${item.roomName} '); / / Set the html element / / Bind the popup with the marker marker.setPopup(popup); / / Click the marker to display the popup layer

[0088] marker.getElement().addEventListener("click",function(){marker.getPopup();

[0089] _this.$router.push({path: / mapRoomDetail',query:{roomId:item.roomId}})});

[0090] window.HomeMarkerGroup=markerGroup

[0091] }

[0092] })

[0093] }

[0094] The search area allows users to quickly find and locate locations on the map. The search area can be searched by device name, feeder, substation, etc. For device name searches, only a list of eligible devices is displayed; searching by feeder or substation has two meanings. In addition to searching for eligible feeders and substations, the power room equipment attached to the feeder and substation must also be displayed. The task management area is mainly convenient for users to view their upcoming tasks and completed tasks, and to create tasks based on the map and equipment. The creation process has a reference and is less prone to errors. The equipment display in the nearby equipment area is synchronized with that in the map area, and its expanded dimension is in list form. In addition to providing management of ledgers and tasks, it can also navigate to the power room of the task.

[0095] The calling code is as follows:

[0096] Jump to map:

[0097] goMap(item){ / / let{lat,lng}=this.$route.query / / Current location

[0098] let{gdLat,gdLng}=this.$localStorage get('curentPosition') / / Current position

[0099] let{roomName}=this.roomDetail / / room information

[0100] this.gpsToGaoge([this.roomDetail.lng,this.roomDetail.lat]).then(res=>{

[0101] console.log(res); let url = "switch(item.name){case 'Amap':

[0102] url='amapupri: / / route / plan / ? sid=&slat=${gdLat}&slon=${gdLng}&sname=current location&did=&dlat=${res.lat}&dlon=${res.lng}&dname=${roomName}&dev=0'

[0103] break; case 'Baidu Map':

[0104] url='baidumap: / / map / direction?origin=name:current location

[0105] |latlng:${gdLat},${gdLng}&destination=name:${roomName}latlng:${res.lat},

[0106] ${res.Ing}&coord_type=gcj02&src=andr.companyName.appName'

[0107] break; case 'Tencent Map':

[0108] url='qqmap: / / map / routeplan? type==drive&from=current location&fromcoord=${gdLat},${gdLng}&to=${roomName}&tocoord=

[0109] ${res.lat},${res.lng}&referer=OB4BZ-D4W3U-B7VVO-4PJWW-6TKDJ-WPB77'

[0110] break;default:break;

[0111] }console.log(jump address;',url);this.showMap=false if(url){window.location.href=url}}).catch(()=>{

[0112] console.log('Coordinate conversion failed'); this.$toast('Coordinate conversion failed') / / alert('Coordinate conversion failed')})}

[0113] The present invention is based on the application of map layer guided unlocking authorization technology. With the support of reasonable task recommendations, it humanely recommends and guides users on what to do and what not to do, avoiding the risk of blind and unfounded unlocking in the process of unlocking key authorization, and more vividly and appropriately expressing the overall process of unlocking authorization by users at the distribution network site.

[0114] In summary, the present invention has the following advantages and beneficial effects:

[0115] 1. By building a distribution network unlocking authorization application scenario model and establishing an adaptation rule library, the integration of multiple application scenarios is solved, a unified standard for data sources from different channels is established, the goal of unified application and management of business scenarios is achieved, and a closed process loop from modeling to final ownership is formed for the entire scenario.

[0116] 2. Ledger changes and ledger cancellations are included in the power distribution network ledger asset management to achieve refined management and control of distribution network assets, ensure the safety of lock key use, prevent outsiders from illegally entering by exploiting loopholes in ledger management, ensure the validity of the ledger, and have references before and after changes, and a basis for subsequent tracing.

[0117] 3. Through full-node monitoring of unlocking authorization tasks, text similarity technology is introduced in the pre-node to reduce operational risks and safety hazards caused by negligence of personal focus of operators. In-process supervision judges whether the operator's behavior has or will have abnormalities. Afterwards, the results of the operator's behavior are analyzed and summarized, and any abnormal behaviors are summarized.

[0118] 4. Visual guidance combined with map layers allows on-site workers to have a wider perspective during operations. Map-based scene operations more vividly and accurately express the overall process of unlocking and authorization during user operations at the distribution network site. Using information models as a carrier, valuable knowledge information is presented, delivered, archived, and shared, facilitating work collaboration.

[0119] The above description is a detailed description of the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. Any equivalent changes or modifications made under the technical spirit disclosed by the present invention should fall within the patent scope covered by the present invention.

Claims

1. A power distribution network intelligent unlocking authorization method based on task and management security, characterized in that: The following steps are involved: S1. Collect distribution network unlocking authorization application scenarios, build a distribution network unlocking authorization application scenario model based on the business elements of the application scenarios, and formulate application scenario rules; S2. Implement refined management of the power distribution network ledger, introducing changes and cancellations of lock and key records into the process engine management; S3. Monitoring the entire process of unlocking authorization tasks on the distribution network. Through full node monitoring of unlocking authorization tasks, strategy analysis is carried out throughout the entire unlocking authorization task operation. S4. Visual display of unlocking authorization based on the map layer. Through the visual guidance of the map layer, the unlocking authorization task scenario operation is carried out; The full-process monitoring of distribution network unlocking authorization tasks starts from the task content itself, utilizes the task library collected from all distribution network application scenarios, adopts a big data analysis strategy, and relies on time-related and space-related rules. Strategy analysis runs through the entire operation process, including pre-planning, in-process monitoring and post-analysis. The time is intercepted on the same day or the end period from the start to completion. The space is based on the geographical distribution and topological relationship of the equipment ledger and GIS.

2. The power distribution network intelligent unlocking authorization method based on task and management security according to claim 1 is characterized in that: Scenario business elements include time, location, basis, people and equipment. Construction of distribution network unlocking authorization application scenario model includes scenario element time modeling, scenario element location modeling, scenario element basis modeling, scenario element person modeling and scenario element equipment modeling.

3. The power distribution network intelligent unlocking authorization method based on task and management security according to claim 1 is characterized in that: The application scenario rules specifically include: scenario element mutual connection rules, scenario element value range rules, and scenario element business node flow rules.

4. The power distribution network intelligent unlocking authorization method based on task and management security according to claim 1 is characterized in that: Carry out refined management of the power distribution network ledger, and introduce the change and cancellation of the lock key ledger into the process engine management, specifically: The change of the ledger is initiated by the operation team member or team leader, who submits a ledger change application form to determine whether it exceeds the maintenance scope. If it does not exceed the scope, it will be approved by the team leader. Otherwise, it will be approved by the district bureau approval personnel. After approval, the ledger change will officially take effect; The rule for determining if the application exceeds the maintenance scope is: if the organization to which the applicant belongs is in the same district bureau as the organization to which the ledger belongs, the application form will be transferred to the team leader of the organization to which the ledger belongs for approval; otherwise, the application form will be transferred to the approval personnel of the district bureau of the organization to which the ledger belongs for approval; The cancellation of the ledger is initiated by the operation team member or team leader, who submits a ledger cancellation application form, which is reviewed and approved by the power supply station or department personnel. After approval, the cancellation of the ledger officially takes effect.

5. The power distribution network intelligent unlocking authorization method based on task and management security according to claim 1 is characterized in that: The big data analysis strategy adopted for monitoring the entire process of distribution network unlocking authorization tasks is as follows: Pre-planning uses text similarity recognition technology based on the task library and task content to output processable data; in-process monitoring uses text similarity recognition technology based on time and space rules and task content to output monitoring data; in-process monitoring uses big data analysis technology based on monitoring data and task content to output statistical analysis information.

6. The power distribution network intelligent unlocking authorization method based on task and management security according to claim 5 is characterized in that: The entire process of distribution network unlocking authorization task monitoring adopts a text similarity recognition algorithm. The text similarity recognition algorithm adopts the fastText model. The fastText model consists of an input layer, a hidden layer, and an output layer. The input layer inputs word vectors, the output layer outputs labels, and the hidden layer superimposes and averages multiple word vectors.

7. The power distribution network intelligent unlocking authorization method based on task and management security according to claim 6 is characterized in that: The fastText model uses the hierarchical Softmax technique, which is based on Huffman coding and encodes labels, which can greatly reduce the number of model prediction targets.

8. The power distribution network intelligent unlocking authorization method based on task and management security according to claim 7 is characterized in that: The fastText model takes advantage of category imbalance and uses the Huffman algorithm to establish a tree structure for representing categories. The depth of the tree structure for frequently appearing categories is smaller than that for infrequently appearing categories.

9. The power distribution network intelligent unlocking authorization method based on task and management security according to claim 1 is characterized in that: The map layer relies on GIS technology. By analyzing the relationship between equipment centers and equipment, the relationship between line stations and equipment, and the relationship between work tasks and locations, the map layer adds quick search, positioning, and navigation functions. The map layer includes: The map area displays the power room equipment within 1 km of the current user's location by default. The latitude and longitude of the current user's location and the distance to the surrounding area are input. The GIS returns the latitude and longitude and draws a point on the map for highlighting. The search area allows users to quickly find and locate locations on the map. Searches can be made by device name, feeder, or substation. Searches by device name only display a list of devices that meet the criteria. Searches by feeder or substation have two meanings: in addition to searching for feeders and substations that meet the criteria, they also display the electrical equipment attached to the feeders and substations. The task management area is mainly used to facilitate users to view their upcoming tasks and completed tasks, and to create tasks based on maps and devices. The creation process has a reference and is less prone to errors. The nearby equipment area displays equipment synchronously with the equipment in the map area. Its expanded dimension is in list form. In addition to providing management of ledgers and tasks, it can also navigate to the power room of the operation task.

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