CN112380164A - Electric power system scene data management method, device and system based on snapshot technology - Google Patents
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Abstract
The invention discloses a method, a device and a system for managing scene data of an electric power system based on a snapshot technology, wherein the method comprises the steps of generating a plurality of snapshots based on different time sections, wherein each snapshot comprises a time mark; storing the snapshots with the same time scale to the same folder to form a plurality of files; and managing the snapshots in the files according to a preset management rule. The invention can deal with huge data snapshot management, realizes deepening and application of the scene data management function of the power system, and shows the full-dimensional data rule related to equipment or a power grid from multiple dimensions such as time, space, objects and the like in the view of big data analysis, thereby providing service support for monitoring, preventing and deciding better for regulation and control production personnel and realizing the deep analysis of the scene data of the power system.
Description
Technical Field
The invention belongs to the field of power grid dispatching automation, and particularly relates to a method, a device and a system for managing scene data of an electric power system based on a snapshot technology.
Background
With more and more mass data such as province and local whole network, full aperture and full service models, parameters, environment and operation data, the continuous operation data snapshot of the whole power grid is gradually formed. The existing data management method cannot establish an operation state portrait analysis model of equipment or a local power grid for provincial and local mass data. In order to deal with huge data snapshot management, deepening and applying of a power system scene data management function are realized. Research on a power system scene data management method based on a snapshot technology needs to be developed, and corresponding software is developed to achieve mass data snapshot management.
At present, there are two main data management modes of a scheduling system: one method is to directly manage source data in areas I and II, upload data analysis results to a cloud end, and display the data in areas III. And the other method is that after the data of the I area and the II area are synchronized in the III area, data management is carried out in the III area, and the analysis result is uploaded to the cloud for display. Therefore, the existing data management method cannot establish an operation state portrait analysis model of equipment or a local power grid for provincial and local mass data.
Disclosure of Invention
Aiming at the problems, the invention provides a method, a device and a system for managing the scene data of the power system based on the snapshot technology, so that the unified management and analysis of mass data are really realized.
In order to achieve the technical purpose and achieve the technical effects, the invention is realized by the following technical scheme:
in a first aspect, the present invention provides a power system scenario data management method based on a snapshot technology, including:
generating a plurality of snapshots of the scene data of the power system based on different time sections, wherein each snapshot comprises a time mark;
storing the snapshots with the same time scale to the same folder to form a plurality of files;
and managing the snapshots in the files according to a preset management rule.
Optionally, the method for managing the power system scenario data based on the snapshot technology further includes:
and taking the time line as an axis, and combining the latest static snapshot before the time point of reading the time section and all changed dynamic snapshots after the time point to generate a complete snapshot in any time section.
Optionally, the managing the snapshots in the files according to a preset management rule includes:
continuously storing the snapshot at a speed of second level based on a preset specified time interval to finish the timed generation of the snapshot;
finishing snapshot trigger generation based on preset power grid event trigger or manual operation trigger;
automatically deleting the expired snapshot based on a self-defined expiration time requirement, or manually deleting the snapshot based on a received manual snapshot deleting instruction;
inquiring the snapshot file at the specified time based on the received inquiry instruction, and finishing the snapshot inquiry;
based on the received snapshot sharing instruction, extracting and packaging the snapshot file to realize snapshot sharing;
based on the received snapshot comparison instruction, when the change of the power grid in the two time sections is found, snapshot comparison is carried out, the comparison content comprises model parameters and real-time data, and difference information is generated.
Optionally, the data in the snapshot includes power grid model data, power grid real-time data, and power grid unstructured data.
Optionally, the snapshots with time stamps are saved in a relational database through a distributed file serving system.
Optionally, the unstructured data comprises weather condition information and holiday information.
Optionally, the saving the snapshots with the same time stamp to the same folder specifically includes: and storing the snapshots with the same time stamp to the same folder in an E-format file mode.
Optionally, the snapshot data in the same file jointly form power grid holographic data, including power system i, ii, iii and cloud data.
In a second aspect, the present invention provides a power system scenario data management apparatus based on snapshot technology, including:
the first generation module is used for generating a plurality of snapshots of the scene data of the power system based on different time sections, and each snapshot comprises a time mark;
the second generation module is used for saving the snapshots with the same time scale to the same folder to form a plurality of files;
and the management module is used for managing the snapshot in each file according to a preset management rule.
In a third aspect, the present invention provides a power system scenario data management system based on a snapshot technology, including: comprising a storage medium and a processor;
the storage medium is used for storing instructions;
the processor is configured to operate in accordance with the instructions to perform the steps of the method according to any one of the first aspects.
Compared with the prior art, the invention has the beneficial effects that:
the method can deal with huge data snapshot management, deepens and applies the scene data management function of the power system, and shows the full-dimensional data rule related to the equipment or the power grid from multiple dimensions such as time, space, objects and the like from the perspective of big data analysis, thereby providing service support for monitoring, preventing and making decisions of regulation and control production personnel and realizing the deep analysis of the scene data of the power system.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a diagram illustrating snapshot file generation according to an embodiment of the present invention;
FIG. 2 is a diagram of a snapshot management hierarchy in accordance with one embodiment of the present invention;
FIG. 3 is a flow diagram of snapshot generation according to one embodiment of the present invention;
FIG. 4 is a flow diagram of a snapshot store in accordance with one embodiment of the present invention;
FIG. 5 is a flow diagram of snapshot management according to one embodiment of the present invention;
FIG. 6 is a flow chart of snapshot reading according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.
The following detailed description of the principles of the invention is provided in connection with the accompanying drawings.
Example 1
The scene data management is a common tool for the system to realize the storage and management of complete data in a specific environment, and is convenient for the application to use the data of a specified scene to carry out analysis and research. By utilizing key data characteristics, the method can be used for analyzing, evaluating and inverting the historical operating conditions of the power grid afterwards, finding out weak links, providing an optimization strategy, guiding the subsequent operation optimization of the power grid and providing reference for planning and construction of the power grid. Meanwhile, by combining with the scheduling professional knowledge and applying a deep learning technology, the correlation contrast analysis and the deep mining of the characteristic information in the scene data under multiple time scales are realized, the description of the current state and the development trend of the power grid is realized, and the power grid abnormal operation and the optimized operation auxiliary decision are given.
Typical types of data that are scenarized include model data, real-time data, and unstructured data, among others. The common management functions of the scenized data include timing generation, trigger generation, deletion, query, sharing, comparison and the like of multiple types of data (sets) and combinations thereof, and are specifically shown in table 1.
TABLE 1
| Data type | Data content | Source |
| Model data | Grid model data | Commercial database + real-time database |
| Real-time data | Operating mode data | Real-time database + memory data |
| Unstructured data | Graphic files, log files, and the like | Distributed file service |
The content of the model data is the model and static parameter information of the system, and mainly comprises region and station information, primary equipment information, secondary equipment information, acquisition models such as RTU (remote terminal Unit), PMU (Power management Unit) and TMR (Total redundancy model), summary model information, calculation point information and model information defined by each application.
The generation and management of the commercial library model data snapshot are realized through a model multi-version function, and the scene data management provides an interface for inquiring model data in a nearest section according to specified time. Most applications will use live library model data snapshots. The scene data management can regularly read the full real-time library model data every day according to the configuration, periodically store the whole network data and generate the static model snapshot. And meanwhile, when the model data are changed, the incremental response is carried out on the model data which are changed in storage, and a dynamic model snapshot is generated. The complete data snapshot of any time section is composed of the static snapshot stored periodically and the dynamic snapshot stored during change, and refer to fig. 1 specifically. The content of the real-time data is application mode data information which mainly comprises parameter information of a model; remote signaling state and measurement data of the power grid equipment; parameter information, section data and the like defined by each application in the system.
The real-time data source comprises record data of a real-time reading library and memory data generated by an application program in the running process, and the record data can be a full-table record or values of some fields of a certain table. The real-time data snapshot is usually stored at regular time according to a certain configuration rule, and under certain conditions, the real-time data snapshot is also triggered by an application program to be stored (the real-time performance is stronger), and the generated data is stored in a file form. When the real-time data snapshot is read, the integrity can be embodied by combining the corresponding model data snapshot.
The unstructured data mainly comprises a graphic file and a log file. Since the data is files, the snapshot is stored in a file copy compression mode. The graphic file can be stored in increment or full amount according to the file modification time, and the log file can be inquired and positioned when being taken out through recording the file path.
The scene data management structure comprises 3 levels of a logic level, a service level and an application level according to hierarchical division, as shown in fig. 2. The logic layer realizes the management functions of inquiring, sharing, generating, deleting, comparing and the like on diversified data in a flexible and configurable mode. The occupation of system resources is greatly reduced, and the safety of service is improved. The service layer realizes external data service of the snapshot and a standard snapshot access interface, and the data interface supports logical uniform access to the distributed data. The application layer comprises a snapshot management interface tool, and management of system scene model data, real-time data, unstructured data and the like is achieved.
Based on this, the embodiment of the present invention provides a power system scenario data management method based on a snapshot technology, including the following steps:
generating a plurality of snapshots based on different time sections, wherein each snapshot comprises a time scale;
storing the snapshots with the same time scale to the same folder to form a plurality of files;
and managing the snapshots in the files according to a preset management rule.
In a specific implementation manner of the embodiment of the present invention, the method for managing the power system scene data based on the snapshot technology further includes:
and taking the time line as an axis, and combining the latest static snapshot before the time point of reading the time section and all changed dynamic snapshots after the time point to generate a complete snapshot in any time section.
In a specific implementation manner of the embodiment of the present invention, the managing snapshots in the files according to a preset management rule includes:
continuously storing the snapshot at a speed of second level based on a preset specified time interval to finish the timed generation of the snapshot;
finishing snapshot trigger generation based on preset power grid event trigger or manual operation trigger;
automatically deleting the expired snapshot based on a self-defined expiration time requirement, or manually deleting the snapshot based on a received manual snapshot deleting instruction;
inquiring the snapshot file at the specified time based on the received inquiry instruction, and finishing the snapshot inquiry;
based on the received snapshot sharing instruction, extracting and packaging the snapshot file to realize snapshot sharing;
based on the received snapshot comparison instruction, when the change of the power grid in two time sections is found, performing snapshot comparison, wherein the comparison content comprises model parameters and real-time data, and generating difference information;
according to the method, the snapshots in the files are managed according to the preset management rules, in the specific implementation process, the management can be realized through a snapshot management tool, the inquiry, the analysis and the management are realized through the power grid snapshot and the equipment portrait, whether the data is reliable or not is checked, the direct inquiry and the display of the scene data of the power system are realized, the downloading of the data is avoided, and the influence on an operating system is reduced. And through data analysis, unnecessary data is deleted regularly, and the occupation of regulation and control system resources is reduced.
In a specific implementation manner of the embodiment of the present invention, the data in the snapshot includes power grid model data, power grid real-time data, and power grid unstructured data, and the unstructured data includes weather condition information and holiday information. And storing each snapshot with the time stamp in a relational database through a distributed file service system. The method and the device realize reference of the model and the parameters at the historical moment in the historical power grid state analysis, and solve the problem that the power grid analysis is performed by using the historical operating data corresponding to the current model and the parameters, and the deviation often occurs. The full-service data at the same time are generated in the file, so that the problem that all data collection cannot be supported is solved. The method has the advantages that unstructured data snapshots such as weather conditions, holiday information and the like at the same moment are combined and analyzed, management of full-dimensional data associated with multi-dimensional display equipment or a power grid can be achieved, and accordingly deep analysis of power system scene data is improved.
In a specific implementation manner of the embodiment of the present invention, the saving the snapshots with the same time stamp to the same folder specifically includes: and storing the snapshots with the same time stamp to the same folder in an E-format file mode. The snapshot data in the same folder jointly form power grid holographic data, including power system I, II and III areas and cloud data. The snapshots with time scales are stored in the relational database through the distributed file service system, so that multi-active configuration snapshot storage is realized, bandwidth resources occupied by storage are greatly optimized on the premise of massive data, storage time is shortened, the space of a regulation and control system occupied by data is reduced, and service performance is improved. Data types supporting diversification are realized.
The following describes a specific flow of the method in the embodiment of the present invention with reference to a specific embodiment.
Fig. 3 is a snapshot generation flow diagram. The snapshot generation contains a snapshot of the real-time data. Model snapshots and unstructured data snapshots, etc. The real-time data snapshot generation is completed by storing the real-time data in a timing/triggering mode or reading historical operating data at a specified time by adopting a big data SQL engine. Model snapshot generation is accomplished by reading data from the relational library either periodically/triggered (full) or in response to changes in the model (incremental). The unstructured data snapshot generation is completed by reading the unstructured data files through a distributed file service system, either by timing/triggering (full volume) or in response to changes (increments) in the unstructured data.
Fig. 4 is a snapshot storage flow diagram. The model snapshot storage is realized by adopting a multi-version relational database. The system periodically stores the whole network model at regular time, and refreshes at the same time, the model is read every 5 minutes, the period and the reading time interval can be automatically set, and when the model changes, the changed table is saved in an increment mode. The storage of the real-time data and the unstructured data snapshot is realized by adopting a file with a timestamp. The real-time database data, the memory database data, the relational database data, the graph, the log, the weather information and other document files and other unstructured data form the holographic data of the power grid. And generating a snapshot file through a distributed file service system, uploading the generated snapshot file to a cloud end through Kafka, and storing the snapshot in a classified manner according to the file time mark and the type.
Fig. 5 is a snapshot management flow diagram. Including timed generation of snapshots, trigger generation, deletion, querying, sharing, comparison, etc.
According to different request types, the request task of snapshot management is completed, and different operation types
The user implements different operations corresponding to the corresponding request types of the service layer through a snapshot management interface tool, a unified data management interface of the service layer completes the request task of snapshot management according to the different request types, the different operation types correspond to different internal functions for processing, and finally the snapshot processing function sub-module of the logic layer is called. After a return result is formed, a response is submitted through the service bus and fed back to the client side of the application layer, and the client side generates a structured result according to different request functions and returns the structured result.
Fig. 6 is a snapshot read flow diagram. And the user regularly or triggers a task of sending a snapshot reading request, and reads the corresponding snapshot file after judging the snapshot type. The real-time data snapshot can directly read the stored snapshot file; the model snapshot downloads the changed incremental model snapshot to a memory base, and the changed incremental model snapshot and the full-network model snapshot which is stored in the relational base and is closest to the time point are spliced into a complete model of the snapshot at the moment; the unstructured data snapshot may stitch the delta file with the most recent full file before the point in time into a complete file for the snapshot at this point in time.
In the traditional data management method, data analysis is performed in the area I and then the data is uploaded to the cloud, so that the analyzed metering data is stored in the cloud. And the delayed data source causes the picture information displayed by the cloud to be influenced by network transmission delay. The scene data management method based on the snapshot technology adopts the snapshot technology, directly uploads source end data to a cloud end, and the cloud end carries out unified data analysis and management, so that the real-time performance is higher, and the network delay error is reduced. Meanwhile, the time interval for storing the sections is shortened, and the time interval for storing the sections is increased from the original time for storing one section per minute to 10 seconds for storing one section.
Because the traditional section data comprises EMS source end data, the scene data comprises diversified data such as EMS, OMS, PMS, a sharing platform, a video system, an electric quantity system and the like, the data section coverage of the cloud end is obviously increased, and each snapshot is about 100 times of the size of the traditional section data.
Example 2
Based on the same inventive concept as embodiment 1, an embodiment of the present invention provides a power system scenario data management apparatus based on a snapshot technique, including:
the first generation module is used for generating a plurality of snapshots based on different time sections, and each snapshot comprises a time scale;
the second generation module is used for saving the snapshots with the same time scale to the same folder to form a plurality of files;
and the management module is used for managing the snapshot in each file according to a preset management rule.
The rest of the process was the same as in example 1.
Example 3
Based on the same inventive concept as embodiment 1, an embodiment of the present invention provides a power system scenario data management system based on a snapshot technique, including: comprising a storage medium and a processor;
the storage medium is used for storing instructions;
the processor is configured to operate in accordance with the instructions to perform the steps of the method according to any of embodiment 1.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A power system scene data management method based on snapshot technology is characterized by comprising the following steps:
generating a plurality of snapshots of the scene data of the power system based on different time sections, wherein each snapshot comprises a time mark;
storing the snapshots with the same time scale to the same folder to form a plurality of files;
and managing the snapshots in the files according to a preset management rule.
2. The electric power system scene data management method based on the snapshot technology as claimed in claim 1, wherein the electric power system scene data management method based on the snapshot technology further comprises:
and taking the time line as an axis, and combining the latest static snapshot before the time point of reading the time section and all changed dynamic snapshots after the time point to generate a complete snapshot in any time section.
3. The method for managing the scenized data of the power system based on the snapshot technology as claimed in claim 1, wherein the managing the snapshots in the files according to the preset management rules includes:
continuously storing the snapshot at a speed of second level based on a preset specified time interval to finish the timed generation of the snapshot;
finishing snapshot trigger generation based on preset power grid event trigger or manual operation trigger;
automatically deleting the expired snapshot based on a self-defined expiration time requirement, or manually deleting the snapshot based on a received manual snapshot deleting instruction;
inquiring the snapshot file at the specified time based on the received inquiry instruction, and finishing the snapshot inquiry;
based on the received snapshot sharing instruction, extracting and packaging the snapshot file to realize snapshot sharing;
based on the received snapshot comparison instruction, when the change of the power grid in the two time sections is found, snapshot comparison is carried out, the comparison content comprises model parameters and real-time data, and difference information is generated.
4. The electric power system scene data management method based on the snapshot technology as claimed in claim 1, wherein: the data in the snapshot comprise power grid model data, power grid real-time data and power grid unstructured data.
5. The electric power system scene data management method based on the snapshot technology as claimed in claim 4, wherein: and storing each snapshot with the time stamp in a relational database through a distributed file service system.
6. The electric power system scene data management method based on the snapshot technology as claimed in claim 4, wherein: the unstructured data includes weather condition information and holiday information.
7. The electric power system scene data management method based on the snapshot technology as claimed in claim 1, wherein: the saving the snapshots with the same time scale to the same folder specifically includes: and storing the snapshots with the same time stamp to the same folder in an E-format file mode.
8. The electric power system scene data management method based on the snapshot technology as claimed in claim 1, wherein: the snapshot data in the same file jointly form power grid holographic data, including power system I, II and III areas and cloud data.
9. A power system scene data management device based on snapshot technology is characterized by comprising:
the first generation module is used for generating a plurality of snapshots of the scene data of the power system based on different time sections, and each snapshot comprises a time mark;
the second generation module is used for saving the snapshots with the same time scale to the same folder to form a plurality of files;
and the management module is used for managing the snapshot in each file according to a preset management rule.
10. A power system scene data management system based on snapshot technology is characterized by comprising: a storage medium and a processor;
the storage medium is used for storing instructions;
the processor is configured to operate in accordance with the instructions to perform the steps of the method according to any one of claims 1 to 8.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101751426A (en) * | 2008-12-11 | 2010-06-23 | 北京市电力公司 | Method and device for realizing information sharing between SCADA and GIS |
| CN107632930A (en) * | 2017-09-06 | 2018-01-26 | 南京南瑞继保电气有限公司 | A kind of method of testing, device, emulator and the computer-readable storage medium of electricity transaction system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751426A (en) * | 2008-12-11 | 2010-06-23 | 北京市电力公司 | Method and device for realizing information sharing between SCADA and GIS |
| CN107632930A (en) * | 2017-09-06 | 2018-01-26 | 南京南瑞继保电气有限公司 | A kind of method of testing, device, emulator and the computer-readable storage medium of electricity transaction system |
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