CN116975399A - Historical state power grid geographic diagram display method and system - Google Patents
Historical state power grid geographic diagram display method and system Download PDFInfo
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Abstract
A method and a system for displaying a historical state power grid geographic diagram are characterized in that: respectively constructing an operation state table, an editing state table and a history state table of the power grid equipment to record the history operation state data of the power grid equipment, and synchronizing the data content in the tables in real time; acquiring a historical backtracking request of power grid equipment, and respectively inquiring an operation state table and a historical state table based on backtracking dates in the backtracking request so as to respectively acquire an operation set A and a historical set B; merging the sets to obtain a backtracking result R; for any tile space, calling a running state device list C and a history state device list D in the tile space, and combining the running state device list C and the history state device list D to generate a backtracking device list L; and inquiring a backtracking result R based on the backtracking equipment list L to obtain a historical state vector tile of the current tile space, so that a historical state power grid geographic map is rendered and generated. The invention realizes the storage and retrieval of the power grid geographic map data in any historical period.
Description
Technical Field
The invention relates to the field of power systems, in particular to a method and a system for displaying a historical state power grid geographic diagram.
Background
Along with the continuous and rapid increase of the total civil electricity consumption, the construction of a power grid is continuously expanded, the electric power is used as a high-risk industry, and a plurality of potential safety hazards exist in the power generation, transmission, transformation and distribution processes. The two-dimensional modes such as traditional design, field measurement, inspection reporting and achievement display are adopted, and the current power grid construction requirement is difficult to meet. The power grid line projects are more, the cross regions are large, the geographic environment is complex, and the planning and design difficulties are increased. The traditional power grid achievement display and reporting mode is single, and the effect is not visual. The power grid structure is complex and various, and the defect positions of the edge equipment are difficult to describe; the inspection result is lack of overall management, and the data cannot be effectively utilized.
At present, the information of the database equipment in the power grid is stored in a structured mode, so that the contents of power grid resources, power grid assets, structured graphics and the like can be reasonably stored. The grid network frame geographic diagram can effectively display the structured data and the graphic information, and visual management of the grid network frame is realized. Furthermore, through the mode, various data such as a live-action model, a panoramic photo, a laser point cloud, a BIM model and CAD of the power line can be integrated on one graph, and the running state of the power grid is truly presented, so that an integrated solution is provided for the scenes such as power generation, power transmission, power transformation and power distribution, reasonable planning and design of the power, intelligent construction and safe operation and maintenance are realized, the power supply reliability of the power transmission line is improved, and the rapid and steady development of the power industry is promoted.
However, because the speed of changing various information in the power grid is high, the information is difficult to track, so that the power grid network frame geographic map can only render and pattern the current power grid running state, and a virtual geographic map cannot be constructed according to a certain past moment in the historical running of the power system, or the past power grid information can be traced back. The method leads to the difficulty of traceable and visual management of power grid staff according to the operation faults and operation weak links at the past moment of the power grid, and greatly reduces the working efficiency.
In view of the foregoing, there is a need for a method and a system for displaying a historical state grid geographical map.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a method and a system for displaying a historical state power grid geographic map, and the running state table, the editing state table and the historical state table of power grid equipment are respectively constructed to realize double-dimension tracing of time and space, so that the rendering basis of the historical state power grid geographic map is realized.
The invention adopts the following technical scheme.
The invention relates to a method for displaying a historical state power grid geographic diagram, which comprises the following steps: respectively constructing an operation state table, an editing state table and a history state table of the power grid equipment to record the history operation state data of the power grid equipment, and synchronizing the data contents in the operation state table, the editing state table and the history state table in real time; acquiring a historical backtracking request of power grid equipment, and respectively inquiring the running state table and the historical state table based on backtracking dates in the backtracking request so as to respectively acquire a running set A and a historical set B; combining the operation set A and the history set B so as to obtain a backtracking result R; for any tile space in the power grid geographic diagram, calling an running state equipment list C and a history state equipment list D in the tile space, and combining the running state equipment list C and the history state equipment list D to generate a backtracking equipment list L; and inquiring the backtracking result R based on the backtracking equipment list L to obtain a historical state vector tile of the current tile space, so that a historical state power grid geographic map is rendered and generated.
Preferably, constructing the running state table, the editing state table and the history state table of the power grid device further includes: the edit status table comprises all fields in the running status table and at least additionally comprises an edit type field and a version ID field; the history state table comprises all fields in the running state table and at least additionally comprises a change type field, a change date field and a new coordinate field after change; all fields in the running state table are used to store the current running attribute information of all grid devices in running state.
Preferably, the real-time synchronization of the data contents in the running state table, the editing state table and the history state table further includes: when the equipment record is updated in the editing state table in a new adding mode, synchronizing the equipment record from the editing state table to the history state table; and when the device records are updated in the editing state table in a modification mode or a deletion mode, synchronizing the corresponding device records from the running state table to the history state table.
Preferably, the obtaining the historical backtracking request of the power grid device further includes: acquiring backtracking time and a backtracking area; querying the running state table and the history state table based on the backtracking date in the backtracking request respectively so as to obtain a running set A and a history set B respectively further comprises: inquiring an operation state table to obtain an operation set A in the current operation; and creating a query condition by the backtracking time, inquiring the equipment records of which the change date field in the history state table accords with the query condition, and constructing a history set B.
Preferably, merging the running set a with the history set B to obtain the backtracking result R further includes: for each device record in the history set B, reading a change type field of the device record, and realizing the combination of the device records in the device set A based on the change type field; all device records in the history set are traversed to complete the merging of the running set A and the history set B.
Preferably, when the value of the change type field is modified, replacing the corresponding device record in the running set A with the current device record in the history set B; when the value of the change type field is newly added, deleting the corresponding equipment record from the operation set A after searching the corresponding equipment record in the operation set A; when the value of the change type field is deleted, a corresponding device record is newly added in the running set A.
Preferably, the tile space is any local area in the power grid geographic map constructed in a vector tile mode, and is obtained based on a backtracking area in a power grid equipment history backtracking request; and the grid geographic map is based on the tile space, so that backtracking inquiry and image rendering of the historical state grid geographic map are realized.
Preferably, for any one tile space in the grid geographic diagram, the calling of the running state device list C and the history state device list D in the tile space further includes: reading an equipment coordinate field in the running state table to screen out a running state equipment list C in the tile space; and reading the changed new coordinate field in the history state table to screen out the history state equipment list D in the tile space.
Preferably, merging the running state device list C with the history state device list D to generate the backtracking device list L further includes: and changing the running state equipment list C according to the coordinate change record in the history state equipment list D to generate a backtracking equipment list L.
The second aspect of the invention relates to a display system of a historical state power grid geographic diagram, which comprises a synchronization module, a query module, a merging module, a calling module and a rendering module; the synchronization module is used for respectively constructing an operation state table, an editing state table and a history state table of the power grid equipment to record the history operation state data of the power grid equipment, and synchronizing the data contents in the operation state table, the editing state table and the history state table in real time; the query module is used for acquiring a historical backtracking request of the power grid equipment, and respectively querying an operation state table and a historical state table based on backtracking dates in the backtracking request so as to respectively acquire an operation set A and a historical set B; the merging module is used for merging the operation set A and the history set B so as to obtain a backtracking result R; the calling module is used for calling the running state equipment list C and the history state equipment list D in the tile space aiming at any one tile space in the power grid geographic diagram, and combining the running state equipment list C and the history state equipment list D to generate a backtracking equipment list L; and the rendering module is used for inquiring the backtracking result R based on the backtracking equipment list L so as to obtain a historical state vector tile of the current tile space, thereby rendering and generating a historical state power grid geographic map.
Compared with the prior art, the method and the system for displaying the historical state power grid geographic map have the advantages that the running state table, the editing state table and the historical state table of the power grid equipment are respectively constructed, so that double dimension tracing of time and space is realized, and the rendering basis of the historical state power grid geographic map is realized. The method is effective and reliable, and can realize the rapid storage and reasonable retrieval of the power grid geographic map data in any historical period, thereby further supporting business applications such as historical grid evaluation and the like, and supporting the historical evolution process of the full-province grid structure in a period of displaying the geographic map.
The beneficial effects of the invention also include:
1. by backtracking data in two dimensions of time and space, the construction of a historical state local regional power grid geographic map is realized, and basic data support is provided for power grid rack evaluation, grid rack historical evolution and other services.
2. Through reasonable organization of historical data storage and calling modes, data storage is realized in a simplest mode, deviation in the data scheduling process is prevented, data operation amount is reduced, and meanwhile, no influence and burden are caused on real-time power grid running state business. By independently constructing a data base of a historical state grid, using MongoDB as an application program platform and using an object storage service OSS to store historical state and running state data tables, remote service call is supported, and integrated maintenance and information tracing of the power grid are realized.
Drawings
FIG. 1 is a schematic diagram of steps of a method for displaying a geographical map of a historical state grid according to the present invention;
FIG. 2 is a schematic diagram of information of power grid equipment in a method for displaying a historical state power grid geographic map according to the present invention;
FIG. 3 is a schematic diagram of the running state table, the editing state table and the data dimension information stored in the history state table in the method for displaying a geographical map of a history state power grid according to the present invention;
FIG. 4 is a schematic diagram of synchronization of an operation state table and an edit state table in a method for displaying a geographical map of a historical state power grid;
fig. 5 is a schematic diagram of the concept of storing and recovering the historical states of the grid frame of the equipment a in the method for displaying the geographic diagram of the historical state grid;
fig. 6 is a schematic diagram of the concept of storing and recovering the historical states of the grid frame of the equipment b in the method for displaying the geographic diagram of the historical state grid;
FIG. 7 is a schematic diagram of information records of different devices in a running library and a history library in a method for displaying a geographical map of a historical state power grid;
FIG. 8 is a schematic diagram of a method for obtaining a history set B in a method for displaying a geographical map of a history state power grid according to the present invention;
fig. 9 is a schematic diagram of an acquisition mode of a backtracking result R in a method for displaying a historical state grid geographic diagram according to the present invention;
FIG. 10 is a schematic diagram of tile partitioning in a method for displaying a geographical map of a historical state grid according to the present invention;
FIG. 11 is a schematic diagram of a historical state grid geographic map retrieval method in a method for displaying a historical state grid geographic map according to the present invention;
FIG. 12 is a schematic diagram of a process for generating historical state vector tile information in a method for displaying a geographical map of a historical state power grid according to the present invention;
fig. 13 is a schematic diagram of generating a backtracking device list L in a method for displaying a historical state grid geographic map according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments of the invention are only some, but not all, embodiments of the invention. All other embodiments of the invention not described herein, which are obtained from the embodiments described herein, should be within the scope of the invention by those of ordinary skill in the art without undue effort based on the spirit of the present invention.
Fig. 1 is a schematic diagram of steps of a method for displaying a geographical map of a historical state power grid according to the present invention. As shown in fig. 1, the first aspect of the present invention relates to a method for displaying a historical state grid geographical map, which includes the following steps.
Step 1, respectively constructing an operation state table, an editing state table and a history state table of the power grid equipment to record the history operation state data of the power grid equipment, and synchronizing the data contents in the operation state table, the editing state table and the history state table in real time.
Firstly, the power grid geographic map constructed in the invention is realized based on the data information in the stations in the power grid data. At present, the table structurally stored by the middle database equipment information comprises a resource table, an asset table and a structured graphic table. Fig. 2 is a schematic diagram of information of power grid equipment in a method for displaying a historical state power grid geographical map according to the present invention. As shown in FIG. 2, each device type creates its resource table, asset table, structured graphic table, respectively. The resource table stores resource information (namely, the running position of the power grid and the hierarchical structure information of the power grid) of the equipment, the asset table stores physical parameters of the equipment, and the structured graphic table stores spatial coordinates, topology and some graphic attributes of the equipment. Taking a tower as an example, recording the electric topology connection mode of the tower, the operation position attribute of the power grid such as the affiliated line, the voltage level and the like in a resource table; the asset list can record physical information of the towers, such as the types, manufacturers, models, construction information and the like of the towers; the graphic table can store information such as the graphic connection mode, the graphic coordinates, the corresponding graphic rendering attribute set and the like of the pole tower.
In the first embodiment of the present invention, the resource information table of the operation tower includes various fields in table 1.
TABLE 1
Similarly, different devices such as a span section, a pole-mounted transformer, a pole-mounted circuit breaker and the like can be provided with similar field tables, and the contents of the field tables can be recorded in an operation state table, an editing state table and a history state table which are mentioned later in the invention. Specifically, the device's resource table, asset table, and structured graphic table each create a corresponding version table. In order to realize the inquiry and construction of the historical state power grid geographic diagram in the invention, three different version tables are involved in the invention.
Preferably, constructing the running state table, the editing state table and the history state table of the power grid device further includes: the edit status table comprises all fields in the running status table and at least additionally comprises an edit type field and a version ID field; the history state table comprises all fields in the running state table and at least additionally comprises a change type field, a change date field and a new coordinate field after change; all fields in the running state table are used to store the current running attribute information of all grid devices in running state.
Fig. 3 is a schematic diagram of the running state table, the editing state table and the data dimension information stored in the history state table in the method for displaying the geographical map of the history state power grid. As shown in fig. 3, each data table is provided with different version tables, and each version table has different data dimensions according to actual conditions, so that comprehensive, complete and traceable storage records of power grid information are realized through dimensions in space and time.
Fig. 4 is a schematic diagram of synchronization of an operation state table and an edit state table in a method for displaying a geographical map of a historical state power grid. As shown in fig. 4, taking the structured graphic table as an example (the resource table and the asset table can be analogized), the existing grid geographic graph model is stored according to the equipment type (large type), and two physical tables are created for each equipment type, one is called an operation state table and the other is called an editing state table. The table name of the EDIT status table is added with a_ver suffix on the running status table name, and an EDIT TYPE field (edit_type) and a VERSION ID field (version_id) are added on the basis of the running status table. Taking a tower as an example, the tower edit status table stores incremental modification data representing modification conditions for the running status table. The "edit type" field has three values, add, update, and Delete, respectively. Wherein Add represents that the current record is newly added relative to the running state; update indicates that the current record is modified compared with the same record (ID identical) of the running state table, and all field values of the record store modified values; delete represents the deletion of the same stripe record from the run state table. The version number field stores the version number of the modified current record, associated with the device change task of the homologous maintenance application. And when the figure maintenance task is approved, the modified data in the editing state table are merged into the running version, and the corresponding record in the editing version is deleted.
Preferably, the real-time synchronization of the data contents in the running state table, the editing state table and the history state table further includes: when the equipment record is updated in the editing state table in a new adding mode, synchronizing the equipment record from the editing state table to the history state table; when the device record is updated in the editing state table in a modification mode or a deletion mode, the corresponding device record is synchronized from the running state table to the history state table.
Specifically, in the aspect of data storage, a historical library of grid space data is newly constructed, and historical change information of grid equipment is stored, namely, when each change occurs, complete attribute information of the equipment before the change is recorded. When a device is added, the complete record of the added device is recorded in the history base and is time stamped. When a device is deleted, the full field of the deleted device is recorded and time stamped. When a device is modified, the full field of the device before modification is recorded and time stamped.
The historical state data is used for backing up the transition condition of the operation version, and the data backtracking can be carried out according to time. The device attributes stored in the history state table of the device include: (1) all attribute fields of device resource information; (2) all fields of device geographical map information; (3) a device topology information field.
Taking a tower as an example, a history state table is added on the basis of an operation state table, and a CHANGE TYPE field (change_type), a CHANGE DATE field (change_date) and a NEW coordinate field (new_get) after CHANGE are added in the history state table relative to the operation state table by taking the_his as a suffix.
The data content stored in the newly added fields is explained below. First, a CHANGE TYPE field (change_type) is stored in the history state table, and the increment and the changed data content are recorded to represent the CHANGE condition for the running state table. The change type field has three values, add, update, and Delete, respectively. Wherein Add represents that the current record is newly added to the running state table; update indicates that the current record is modified compared with the same record (ID the same) of the running version, unlike the edit mode table, all field values of the record store the running mode value before modification in order to be able to recover the history attribute; and Delete represents the deletion of the same stripe record from the running version.
Similarly, the date of change field records the time at which the data change was formally posted. The post-change new coordinate field is used to characterize the new coordinates after a change if the coordinates of the device are changed, and the field is used to record the new coordinates after the change. The main function of this field is to support the query of the coordinate-changing device of the vector slice spatial extent.
The maintenance of the historical state database is realized by the homologous maintenance application, and particularly is realized in the equipment transaction release link of the homologous maintenance application. When the device transaction release function is executed, the device data of the transaction change needs to be archived in a history state table. The data distribution logic is as follows:
(1) According to the modification data of the current task in the edit mode table, storing the abnormal equipment record in the history mode table, wherein the specific method is as follows:
if an equipment record is added in the edit status table, the record needs to be stored from the edit status table to the history status table, and the change type field is set as Add;
if the edit status table modifies a record, the device record in the running status table needs to be stored in the history status table, and the change type field is set to Update;
if the edit status table deletes a device record, the device record in the running status table needs to be stored in the history table.
(2) The history state table related in the current release process is recorded, and a current time stamp is marked.
(3) And executing a normal release flow, and merging the modified data in the editing state table into the running state table.
Fig. 7 is a schematic diagram of information records of different devices in a running library and a history library in a method for displaying a geographical map of a historical state power grid. As shown in fig. 7, for a period of time (i.e., a period from No. 1 to No. 30 of one month), for example, four devices A, B, C, D, the situation that their data change records are stored in the history base will change with the actual situation, and therefore, the history state table in the history base and the running state table in the running base will record the history or the current related data content according to the recording rule thereof.
Over time, there will be more and more historical data, for which a batch of data records may be archived in time, and the data that is too old may be dumped into another table or external storage, if necessary to support querying of the archived data.
And 2, acquiring a historical backtracking request of the power grid equipment, and respectively inquiring an operation state table and a historical state table based on backtracking dates in the backtracking request so as to respectively acquire an operation set A and a historical set B.
Specifically, when the historical state grid is required to be recovered, assuming that the historical state grid is recovered to the time T, taking the latest running state grid as a reference, simultaneously inquiring the change record of each device which first occurs after the time T in a historical library, and finally performing backtracking operation on the current running state grid and the change record obtained by inquiry to obtain grid data of the appointed historical moment T.
Fig. 5 is a schematic diagram of the concept of storing and recovering the historical states of the grid frame of the equipment a in the method for displaying the geographic diagram of the historical state grid. As shown in fig. 5, when the current Time device a is in a certain operation state, if tracing back to Time2 or Time1, it is necessary to synchronize its earliest state before Time2 and Time1, respectively. Fig. 6 is a schematic diagram of the concept of storing and recovering the historical states of the grid frame of the equipment b in the method for displaying the geographic diagram of the historical state grid. As shown in fig. 5, the device B is not in an operating state at the present time, but by tracing back to a different historical time, there may be a case where the device B is in a different operating state.
Preferably, the obtaining the historical backtracking request of the power grid device further includes: acquiring backtracking time and a backtracking area; querying the running state table and the history state table based on the backtracking date in the backtracking request respectively so as to obtain a running set A and a history set B respectively further comprises: inquiring an operation state table to obtain an operation set A in the current operation; and creating a query condition by the backtracking time, inquiring the equipment records of which the change date field in the history state table accords with the query condition, and constructing a history set B.
And the historical state grid is retracted according to the change records of the equipment in the historical library. Fig. 8 is a schematic diagram of a method for obtaining a history set B in a method for displaying a geographical map of a history state power grid according to the present invention. As shown in fig. 8, in the present invention, a date that needs to be traced back may be input first. In fig. 8, taking backtracking to No. 7 as an example, the history state table of the device is queried, and the change record that first occurs after No. 7 needs to be queried. The specific query logic is as follows: the "change date" is greater than the backtracking date (No. 7), and for the same device, the one of its change records that has the smallest "change date" (i.e., is closest to No. 7). Thus, each device queries a corresponding historical change record at most. The queried history change records are merged for the next version. The set of these records is denoted as a.
On the other hand, the method may query the running state table to form a running state device set, denoted as B.
And 3, merging the operation set A and the history set B, thereby obtaining a backtracking result R.
Fig. 9 is a schematic diagram of an acquisition mode of a backtracking result R in a method for displaying a historical state grid geographical map according to the present invention. As shown in fig. 9, preferably, merging the running set a and the history set B to obtain the backtracking result R further includes: for each device record in the history set B, reading a change type field of the device record, and realizing the combination of the device records in the device set A based on the change type field; all device records in the history set are traversed to complete the merging of the running set A and the history set B.
After the collection A and the collection B are obtained, the collection A and the collection B are combined, so that a backtracking result is obtained. Specifically, the method may perform a version merging operation, and version-merge the queried history change record set B and the running state record set a.
Preferably, when the value of the change type field is modified, replacing the corresponding device record in the running set A with the current device record in the history set B; when the value of the change type field is newly added, deleting the corresponding equipment record from the operation set A after searching the corresponding equipment record in the operation set A; when the value of the change type field is deleted, a corresponding device record is newly added in the running set A.
The specific logic is as follows: the method takes a record set A in a running state as an initial result set (marked as R); and traversing the queried historical equipment record set B, and carrying out the following operation on each record:
firstly, for the history change record of the device with the change type of 'modification', the record directly stores the full field value before the change, so that the running state record of the device can be directly replaced, and the data recovery of the device record is realized, namely the running state record of the device is replaced in the result set R.
In addition, for the history change record of the device with the change type of 'new addition', the running state record of the device is deleted in the result set R, so that the reverse recovery of the data is realized. And for the history change record of the equipment with the change type of 'deletion', adding a record of the equipment in the result set R, and taking the record field value from the 'deletion' history change record to realize reverse reduction.
After the steps are executed, a final version merging result R is formed, namely, the power grid data at the appointed historical time moment is restored. By the method, the backtracking of the historical data at any moment can be completed.
And 4, calling an running state device list C and a history state device list D in the tile space according to any one tile space in the power grid geographic diagram, and combining the running state device list C and the history state device list D to generate a backtracking device list L.
Fig. 10 is a schematic diagram of tile division principle in a method for displaying a geographical map of a historical state power grid according to the present invention. Tile technology comes from internet maps, originated from Google maps, and when using internet maps, we see a large map picture that fills the whole screen. In practice, the large picture is formed by seamlessly splicing a plurality of small pictures (usually 256×256 pixels) with the same size according to a given rule, and the small pictures are tiles. Tiles are organized in a pyramidal structure as shown in FIG. 10, each of which may be uniquely marked by a rank, column number. When the map is translated and scaled, the browser calculates the required tiles according to pyramid rules, and acquires and splices the tiles from the tile server.
In the early stages of tile development, picture-mediated tiles (grid tiles) are rapidly becoming popular in internet maps. However, with the mobilization and the progressive penetration of maps, grid tiles suffer from at least two problems: the pictures occupy large bandwidth and are stored, so that the application of the map in the mobile equipment is not facilitated; the pictures cannot interact.
With the development of technology, vector tiles are currently adopted to replace grid tiles so as to solve the problems. Vector tiles employ the same hierarchical cutting scheme as grid tiles except that the tile data exists in vector form. Vector tiles are small in size, highly compressible, and occupy thousands of times less storage space than grid tiles. On one hand, the network bandwidth consumption is reduced, on the other hand, the map offline is possible, the drawing effect is better, and the display style can be flexibly customized at the front end. The advantages of vector tiles are numerous, including: small occupied space, high display quality, high rendering performance, flexible style control and the like.
The invention adopts a vector tile mode to realize the display of the historical state grid geographical map at any historical moment (the minimum time granularity is the day), thereby realizing the advantages of small occupation of the historical data storage space, high retrieval performance and the like.
Fig. 11 is a schematic diagram of a retrieval mode of a historical state grid geographic map in a method for displaying a historical state grid geographic map according to the present invention. As shown in FIG. 11, the method and the device of the invention firstly inquire running state devices and history change records of the devices in a tile space range, trace data, and finally generate historical state tiles based on the traced data.
Preferably, the tile space is any local area in a power grid geographic diagram constructed in a vector tile mode, and is obtained based on a backtracking area in a power grid equipment history backtracking request; and the grid geographic map is based on the tile space, so that backtracking inquiry and image rendering of the historical state grid geographic map are realized.
It will be appreciated that the tile space in the present invention may be a local area in a grid geographic map corresponding to the backtracking requirement in the present invention, or may be a further sub-divided area for the local area. In summary, the tile space may characterize a certain local space of the grid geography as a whole. On the local space, according to the data information in the history state table and the running state table in the invention, when the data information corresponds to the local space, the modeling and the rendering of the geographic map can be realized through the form of vector tiles, so that the abstract data information can be displayed and interacted in a visual mode.
In one embodiment of the present invention, the tile spatial extent (square spatial extent), and the spatial extent S may be calculated based on the rank, rank number, and the like of the tile to be generated. Then, according to the space scope S, the grid equipment record set in the space scope S can be queried in the grid resource database, and finally, according to the queried and returned grid equipment record set, the equipment records in the set are converted into Cheng Shiliang tile format, so that vector tiles are generated.
It should be noted that, the vector tiles in the present invention may be divided by calling the existing tile grid division technique to implement the division of the single vector tile. The tile space in the present invention is related to business, and may be a space formed by combining a plurality of vector tiles.
The method is mainly used for displaying a historical state diagram, and according to the method, after the historical power grid geographic diagrams at different moments are traced back for a plurality of times according to the sequence of a time axis, the historical evolution process of the full-saving grid structure in a period can be displayed on the geographic diagrams, namely, the historical evolution of the full information of the grid can be displayed according to the data condition in the historical state table.
In order to realize the historical evolution, the trace-back time adopted by the method in the process of trace-back for many times is actually extracted according to the generation time of each piece of data in the historical state table, and the whole information can be obtained to the visual interaction interface of the historical evolution of the whole net rack in this way. Therefore, the method comprises the steps of firstly obtaining the generation time of all change data in a preset time interval from a historical state table, sequencing all the generation time according to a time axis sequence, obtaining the data sequence in the historical state table, independently constructing a backtracking request for each of all the generation time, sequencing a plurality of the backtracking requests, and finally obtaining a power grid geographic map for a plurality of the backtracking requests; and sequencing the power grid geographic graphs, and taking the interval length as the frame maintenance time of a plurality of power grid geographic graphs according to the interval length of each generation time, so as to generate a power grid geographic graph historical evolution video.
In addition, for the rendering interface of the single historical state power grid geographic diagram, the method can add interactive services, such as a historical grid evaluation service and other various power grid applications based on the rendered vector geographic diagram.
Preferably, for any one tile space in the grid geographic diagram, the calling of the running state device list C and the history state device list D in the tile space further includes: reading an equipment coordinate field in the running state table to screen out a running state equipment list C in the tile space; and reading the changed new coordinate field in the history state table to screen out the history state equipment list D in the tile space.
Specifically, assuming that the history date to be recalled is T, the specific steps for generating the vector tile of the history date T are as follows:
(1) Inquiring running state equipment in the tile space range to form a set A;
(2) Inquiring a change record which occurs first after a date T of each device in a tile space range (namely, for the case that a plurality of change records exist in the same device after the date T, taking the change record with the change date closest to the date T) to form a set B;
(3) According to the change records in the set B, carrying out change operation on the set A, and recovering to a state of appointed historical time to form a historical state set C;
(4) A history state vector tile is generated from set C.
And 5, inquiring a backtracking result R based on the backtracking equipment list L to obtain a historical state vector tile of the current tile space, so that a historical state power grid geographic map is rendered and generated.
Fig. 12 is a schematic diagram of a process for generating historical state vector tile information in a method for displaying a geographical map of a historical state power grid according to the present invention. As shown in fig. 12, merging the running state device list C with the history state device list D to generate the backtracking device list L further includes: and changing the running state equipment list C according to the coordinate change record in the history state equipment list D to generate a backtracking equipment list L.
It can be seen that the most critical link in the above procedure is to query the change record of each device in the tile space range, which first occurs after the date T. The query is divided according to the relation between the equipment change record and the tile space range, and is divided into the following cases: (1) The equipment is in the tile space range before and after the change; (2) The equipment is in the tile space range before changing and out of the tile space range after changing; (3) The device is outside the tile space before changing and inside the tile space after changing. Fig. 13 is a schematic diagram of generating a backtracking device list L in a method for displaying a historical state grid geographic map according to the present invention. The three cases are each illustrated in a view in fig. 13.
The method designs 2 inquiry methods according to the above 3 conditions, the 2 inquiry methods are respectively executed, and then the duplicate removal and the combination of the 2 inquiry results are carried out to form a final inquiry result.
Specifically, query 1 is used for querying cases (1) and (2), and the specific implementation method is as follows: querying records in the history state table meeting the following two query conditions simultaneously: query condition one: the recorded "device coordinates" field is within the vector tile space (as determined by the way the connection lines between the device and other connected devices intersect the edges of the vector tile); query condition two: the 'change date' field of the record is later than the date T, and for the condition that a plurality of change records exist in the same device after the date T, the change record with the 'change date' nearest to the date T is taken.
In addition, query 2, used for querying case (3), specifically implementing the method: querying records in the history state table meeting the following two query conditions simultaneously: query condition one: the recorded 'new coordinates after change' field is in the space range of the vector tile; query condition two: the 'change date' field of the record is later than the date T, and for the condition that a plurality of change records exist in the same device after the date T, the change record with the 'change date' nearest to the date T is taken.
On the basis of the two queries, the results of query 1 and query 2 are combined, if the two results contain the same equipment, the two identical equipment records are combined in a secondary version, and the combination method is to keep the record which is more closely separated from the date T to form a final result.
The second aspect of the invention relates to a display system of a historical state power grid geographic diagram, which comprises a synchronization module, a query module, a merging module, a calling module and a rendering module; the synchronization module is used for respectively constructing an operation state table, an editing state table and a history state table of the power grid equipment to record the history operation state data of the power grid equipment, and synchronizing the data contents in the operation state table, the editing state table and the history state table in real time; the query module is used for acquiring a historical backtracking request of the power grid equipment, and respectively querying an operation state table and a historical state table based on backtracking dates in the backtracking request so as to respectively acquire an operation set A and a historical set B; the merging module is used for merging the operation set A and the history set B so as to obtain a backtracking result R; the calling module is used for calling the running state equipment list C and the history state equipment list D in the tile space aiming at any one tile space in the power grid geographic diagram, and combining the running state equipment list C and the history state equipment list D to generate a backtracking equipment list L; and the rendering module is used for inquiring the backtracking result R based on the backtracking equipment list L so as to obtain a historical state vector tile of the current tile space, thereby rendering and generating a historical state power grid geographic map.
It may be understood that, in order to implement each function in the method provided in the foregoing embodiment of the present application, the system includes a corresponding hardware structure and/or software module for executing each function. Those of skill in the art will readily appreciate that the various illustrative algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The embodiment of the application can divide the functional modules of the system according to the method example, for example, each functional module can be divided corresponding to each function, and two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.
The system may be implemented by one or more device communication connections. The apparatus includes at least one processor, a bus system, and at least one communication interface. The processor is comprised of a central processing unit, field programmable gate array, application specific integrated circuit, or other hardware. The memory is composed of a read-only memory, a random access memory and the like. The memory may be stand alone and coupled to the processor via a bus. The memory may also be integrated with the processor. The hard disk can be a mechanical disk or a solid state disk, etc. The embodiment of the present invention is not limited thereto. The above embodiments are typically implemented in software, hardware. When implemented using a software program, may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions.
When the computer program instructions are loaded and executed on a computer, the corresponding functions are implemented according to the procedures provided by the embodiments of the present invention. The computer program instructions referred to herein may be assembly instructions, machine instructions, or code written in a programming language implementation, or the like.
Compared with the prior art, the method and the system for displaying the historical state power grid geographic map have the advantages that the running state table, the editing state table and the historical state table of the power grid equipment are respectively constructed, so that double dimension tracing of time and space is realized, and the rendering basis of the historical state power grid geographic map is realized. The method is effective and reliable, and can realize the rapid storage and reasonable retrieval of the power grid geographic map data in any historical period, thereby further supporting business applications such as historical grid evaluation and the like, and supporting the historical evolution process of the full-province grid structure in a period of displaying the geographic map.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (10)
1. A method for displaying a historical state grid geographical map, the method comprising the steps of:
respectively constructing an operation state table, an editing state table and a history state table of the power grid equipment to record the history operation state data of the power grid equipment, and synchronizing the data contents in the operation state table, the editing state table and the history state table in real time;
acquiring a historical backtracking request of power grid equipment, and respectively inquiring the running state table and the historical state table based on backtracking dates in the backtracking request so as to respectively acquire a running set A and a historical set B;
combining the operation set A and the history set B so as to obtain a backtracking result R;
for any tile space in the power grid geographic diagram, calling an running state equipment list C and a history state equipment list D in the tile space, and combining the running state equipment list C and the history state equipment list D to generate a backtracking equipment list L;
And inquiring the backtracking result R based on the backtracking equipment list L to obtain a historical state vector tile of the current tile space, so that a historical state power grid geographic map is rendered and generated.
2. The method for displaying a geographical map of a historical state grid according to claim 1, wherein:
the construction of the running state table, the editing state table and the history state table of the power grid equipment further comprises the following steps:
the editing state table comprises all fields in the running state table and at least additionally comprises an editing type field and a version ID field;
the history state table comprises all fields in the running state table and at least additionally comprises a change type field, a change date field and a new coordinate field after change;
all fields in the running state table are used for storing current running attribute information of all power grid equipment in a running state.
3. The method for displaying a historical state grid geographical map according to claim 2, wherein:
the real-time synchronization of the data contents in the running state table, the editing state table and the history state table further comprises:
when the equipment records are updated in the editing state table in a new mode, synchronizing the equipment records from the editing state table to the history state table;
And when the device records are updated in the editing state table in a modification mode or a deletion mode, synchronizing the corresponding device records from the running state table to the history state table.
4. A method for displaying a historical state grid geographical map according to claim 3, wherein:
the obtaining the historical backtracking request of the power grid equipment further comprises:
acquiring backtracking time and a backtracking area;
the step of respectively inquiring the running state table and the history state table based on the backtracking date in the backtracking request so as to respectively obtain a running set A and a history set B further comprises the following steps:
inquiring an operation state table to obtain the operation set A in the current operation;
and creating a query condition by the backtracking time, querying a device record of which the change date field in the history state table accords with the query condition, and constructing a history set B.
5. The method for displaying a historical state grid geographical map according to claim 4, wherein:
the merging the running set a and the history set B to obtain a backtracking result R further includes:
for each device record in the history set B, reading a change type field of the device record, and realizing the combination of the device records in the device set A based on the change type field;
All device records in the history set are traversed to complete the merging of the running set A and the history set B.
6. The method for displaying a historical state grid geographical map according to claim 5, wherein:
when the value of the change type field is modified, replacing the corresponding device record in the running set A by the current device record in the history set B;
when the value of the change type field is newly increased, deleting the corresponding equipment record from the operation set A after finding the corresponding equipment record in the operation set A;
and when the value of the change type field is deleted, adding a corresponding device record in the running set A.
7. The method for displaying a geographical map of a historical state grid according to claim 1, wherein:
the tile space is any local area in the power grid geographic diagram constructed in a vector tile mode, and is obtained based on a backtracking area in the power grid equipment history backtracking request;
and the grid geographic map is based on the tile space, so that backtracking inquiry and image rendering of the historical state grid geographic map are realized.
8. The method for displaying a geographical map of a historical state grid according to claim 1, wherein:
The calling the running state equipment list C and the history state equipment list D in the tile space aiming at any tile space in the power grid geographic diagram further comprises the following steps:
reading an equipment coordinate field in the running state table to screen out a running state equipment list C in the tile space;
and reading the changed new coordinate field in the history state table to screen out a history state equipment list D in the tile space.
9. The method for displaying a historical state grid geographical map according to claim 8, wherein:
the merging the running state device list C and the history state device list D to generate the backtracking device list L further includes:
and changing the running state equipment list C according to the coordinate change record in the history state equipment list D to generate a backtracking equipment list L.
10. The utility model provides a historical state electric wire netting geographical map's display system which characterized in that:
the system comprises a synchronization module, a query module, a merging module, a calling module and a rendering module; wherein,,
the synchronization module is used for respectively constructing an operation state table, an editing state table and a history state table of the power grid equipment to record the history operation state data of the power grid equipment, and synchronizing the data contents in the operation state table, the editing state table and the history state table in real time;
The query module is used for acquiring a historical backtracking request of the power grid equipment, and respectively querying the running state table and the historical state table based on backtracking dates in the backtracking request so as to respectively acquire a running set A and a historical set B;
the merging module is used for merging the operation set A and the history set B so as to obtain a backtracking result R;
the calling module is used for calling an running state equipment list C and a history state equipment list D in any tile space in the power grid geographic diagram, and combining the running state equipment list C and the history state equipment list D to generate a backtracking equipment list L;
and the rendering module is used for inquiring the backtracking result R based on the backtracking equipment list L to obtain a historical state vector tile of the current tile space, so that a historical state power grid geographic map is rendered and generated.
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