CN111160868A - Unified distribution network frame topology construction method based on graph fusion technology - Google Patents
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Abstract
The invention discloses a unified distribution network rack topology construction method based on a graph fusion technology, which comprises the following steps: the first step, data processing: acquiring metadata of ledger data in three service systems of a marketing system, a production management system and a geographic information system; preprocessing and reserving valid data; and secondly, constructing a power distribution network frame element model. Thirdly, constructing a single-system net rack topology: the constructed distribution network frame topological graph is stored in a graph database; fourthly, constructing a fusion power distribution network frame topology: and constructing a unified distribution network frame topology by utilizing a graph fusion algorithm and combining the constructed single-system network frame topology. The invention can realize the comparison and verification of the transverse consistency and the verification of the longitudinal data accuracy of the machine account data of different systems and provide self-service data verification and management service for the system; and according to the treatment result fed back by the business department, iteratively improving the data treatment and identifying the accuracy and the efficiency of the model.
Description
Technical Field
The invention belongs to the technical field of power information, and particularly relates to a unified distribution network rack topology construction method based on a graph fusion technology.
Background
At present, in a power grid company, distribution network account data is stored in a marketing system, a Production Management System (PMS) and a Geographic Information System (GIS), attribute dimensions of the distribution network accounts stored in each system are different, some systems have equipment accounts which are repeated with other systems, and some equipment accounts which are unique to the systems per se.
The quality of the standing book data of the power distribution network system is not high, and the system mainly shows that the standing book data in a marketing system, a Production Management System (PMS) and a Geographic Information System (GIS) have wrong relation, inconsistent standing book data attributes, inaccurate measurement data and collected data and the like. If the data quality problems are found and repaired in a manual checking mode, the implementation difficulty is high, and the ledger data problems can bring great influence on the accuracy of the related production and operation data calculation and analysis results.
Therefore, the marketing system, the Production Management System (PMS) and the Geographic Information System (GIS) cannot independently provide complete and accurate power distribution network account information, and the multidimensional information of the equipment accounts in the marketing system, the Production Management System (PMS) and the Geographic Information System (GIS) is extracted by using a plurality of business systems, so that account data of three business systems can be combined to construct a complete and accurate power distribution network.
In the prior art, a method for constructing a dynamic topological relation of a power transmission line based on a graph theory is used for establishing a dynamic topological data structure by utilizing the graph theory and a database theory and storing topological data in a graph database. But the performance, applicability and degree of visualization of this approach need to be improved.
Disclosure of Invention
The invention aims to provide a unified distribution network rack topology construction method based on a graph fusion technology, so as to solve the technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
the unified distribution network rack topology construction method based on the graph fusion technology comprises the following steps:
first step, data processing
Acquiring metadata of ledger data in three service systems of a marketing system, a production management system and a geographic information system; removing outdated data, invalid data and repeated data in the metadata, and keeping the valid data;
second step, constructing a power distribution network frame element model
The power distribution network frame meta model defines various service entities in the power distribution network and topological relations among the various service entities, is a meta data standard of the invention, and the ledger data processed in the first step are used for constructing a power distribution network frame topological graph according to the power distribution network frame meta model. The design of the power distribution network frame element model conforms to the IEC61970 standard of the international electrotechnical commission, the CIM4.0.3 standard of the national power grid company conforms to the IEC61970 standard of the international electrotechnical commission, and the CIM4.0.3 standard of the national power grid company.
The business entities defined by the grid element model of the power distribution network comprise a transformer substation, a feeder line, a main line, a power distribution line segment, a conducting wire, a running tower, an on-pole circuit breaker, an on-pole isolating switch, an on-pole load switch, an in-station circuit breaker, an in-station isolating switch, an in-station load switch, an on-pole transformer, a distribution transformer, a ring main unit, a switching station, a cable branch box, a box-type transformer substation, a metering point, an electric energy meter, an electricity customer, a high-voltage gateway meter, a low-voltage gateway meter, a gateway meter user, an access point, a transformer area, an electric meter box, a distribution transformer intelligent terminal, a concentrator and.
Five types of relations of association, inclusion, deployment, monitoring, connection and monitoring are defined in the meta-model. These relationships are described below:
association (association): meaning that there is a logical connection between the objects and not a direct electrical or physical connection. Such as an association between a feeder and a substation.
Comprising (include): indicating that one object is located inside another object. Such as a containment relationship between the feeder and the main line.
Deployment (locate): meaning that one object is deployed outside of another object. For example, the pole-mounted circuit breaker and the operation tower are in a deployment relationship.
Connection (connect): representing the connection of two objects on a circuit. Such as line sections and pole breakers, are connected.
Monitoring (monitor): indicating the monitoring of the primary device by the secondary device. Such as a switch monitoring terminal, is in monitoring relationship with the pole top circuit breaker.
Thirdly, constructing a single-system net rack topology
And respectively constructing a marketing power distribution network frame topological graph, a GIS power distribution network frame topological graph and a PMS power distribution network frame topological graph by using the account data processed in the first step according to the power distribution network frame topological meta-model constructed in the second step. And storing the constructed distribution network frame topological graph in a graph database.
The steps of the construction process of the distribution network frame topological graph are as follows:
firstly, a ledger data relation diagram of each business system is arranged. For example, the standing book data relation diagram of the marketing system is shown in the attached figure 3 of the specification.
And further, according to the distribution network frame topology meta-model, the node types in the meta-model are corresponding to the account data. For example, in the meta model, a transformer substation meta model is shown in the attached figure 4 of the specification.
Further, corresponding of meta-model nodes- > standing book data is carried out, a transformer substation in the meta-model corresponds to a g _ subs table in the marketing standing book, and a feeder line in the meta-model corresponds to a g _ line table in the marketing standing book.
And further, according to the distribution network frame topology meta-model, corresponding the object relation in the meta-model to the marketing standing book data. The data relation graph corresponding to the marketing standing book according to the ' transformer substation ' -feeder ' relation in the meta-model is shown in the attached figure 5 of the specification.
Further, according to the corresponding relation between the power distribution network frame meta-model and the account data, the service system account data is used for creating node examples and relation examples, and the node examples and the relation examples are stored in a graph database to form a power distribution network frame topological graph of a single service system. The constructed marketing system distribution network frame topological graph is shown in the attached figure 6 of the specification.
Fourthly, constructing a network frame topology of the fusion power distribution network
And (4) constructing a unified distribution network frame topology by utilizing a graph fusion algorithm and combining the single-system network frame topology constructed in the third step.
The basis of the graph fusion algorithm is the operation and distribution through result of the national network company. The national network marketing and distribution through result establishes an incidence relation for the ledger data corresponding to the same service entity in the GIS system, the marketing system and the PMS system. The marketing and distribution through-production results are as follows:
the principle of the graph fusion algorithm is that three single-system grid maps are overlapped, nodes corresponding to the same service entity in each graph are combined into one node, relationships corresponding to the same entity relationship are combined into one relationship, and unique nodes and relationships in the three single-system grid maps are all added to a fusion graph. The process of fusing three single-system grid maps into a fused map is shown in the attached figure 7 of the specification.
When nodes corresponding to the same service object in each graph are combined into one node, the attribute values of the nodes are also combined. The node attributes are repeatedly stored in a plurality of service systems, and the PMS service system is used as the standard according to the national network requirements. The finally generated fusion graph is shown in the specification and attached figure 8.
Compared with the prior art, the invention has the following beneficial effects:
1. the method can realize the comparison and verification of the transverse consistency of the machine account data of different systems and the verification of the accuracy of longitudinal data, and provides self-service data verification and management service for the systems.
2. The data management and the model identification accuracy and efficiency can be improved in an iterative mode automatically according to the management result fed back by a business department.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a process for constructing a single system grid topology;
FIG. 2 is a flow chart of a topology for constructing a unified distribution network rack;
FIG. 3 is a ledger data relationship diagram for a marketing system;
FIG. 4 is a diagram of a meta-model of a substation;
FIG. 5 is a diagram of a transformer substation feeder relationship in marketing;
FIG. 6 is a power distribution network frame topological diagram of the marketing system;
FIG. 7 is a schematic view of a fusion process;
FIG. 8 is a fusion map.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
The invention provides a unified distribution network rack topology construction method based on a graph fusion technology, which comprises the following steps:
the first step is as follows: collecting metadata of ledger data in three business systems of a marketing system, a Production Management System (PMS) and a Geographic Information System (GIS); and sorting out the difference of the standing book data among the three business systems according to the metadata of the standing book data in the three business systems of the marketing system, the Production Management System (PMS) and the Geographic Information System (GIS). And removing outdated data, invalid data and repeated data in the metadata, and keeping the valid data.
What the marketing system lacks is: the account data of the main line, the power equipment container (ring main unit, switching station, cable branch box, box-type substation), the conductive equipment (wire, breaker, disconnecting switch, load switch, distribution line section), the access point, the operation tower and the electric meter box.
Missing from the PMS system is: the system comprises a distribution area, low-voltage users, an electric energy meter, an electric meter box, a metering point, an access point and account data of assessment users.
What the GIS system lacks is: the electric energy meter, the platform area, the metering point, the low-voltage user and the account data of the assessment user.
The second step is that: and defining a grid frame topological element model by using a national power grid company enterprise public data model (SG-CIM for short). The model describes attributes, class inheritance relations and correlation modes of users, lines, transformer areas, transformers, substations, metering points and electric energy meters.
The third step: and selecting a storage mode of the graph database to the net rack topological graph. The realization mode of the graph database for the storage space, the meta model, the dimension and the dimension value, the storage mode of the node storage model object, the storage mode of the relationship storage model relationship and the association mode of the model object for the graph storage space are defined.
Based on the grid topology meta-model, account data of a marketing system, a Production Management System (PMS) and a Geographic Information System (GIS) are mapped to the node and object relationship of the meta-model according to the standard of a national grid company CIM4.0, a single-system grid topology map is generated and stored in a map database. The single-system network frame topological graph describes the containing, connecting, deploying and monitoring relations among the actually existing service objects in the power distribution network, the service objects in the graph have full-dimensional attribute information, and the data query requirements of all information items and science and technology items on the single-system power distribution network frame topology can be met.
The fourth step: based on the single-system grid topological structure of the marketing system, the Production Management System (PMS) and the Geographic Information System (GIS) of the production, matching and fusion of the multi-source grid topological structure are realized by using a graph fusion algorithm, and a unified distribution network grid topological structure is automatically generated. The main idea of the graph fusion algorithm is to overlap three single-system network frame topological graphs, combine nodes corresponding to the same service entity in each graph into one node, combine relationships corresponding to the same entity relationship into one relationship, and add all unique nodes and relationships in the three single-system network frame topological graphs into the unified distribution network frame topological graph.
And verifying the fused grid structure based on grid structure logic rules, and realizing monitoring and analysis of grid structure relation abnormity on the unified grid topology structure.
Based on unified grid topological structure standard, the conversion of knowledge maps of grid structures of marketing, PMS and GIS systems is realized, and based on machine learning technology, a multi-source grid result intelligent identification model is constructed, the consistency comparison of files and the abnormal identification of grid structure relations are realized, self-service data checking and management service is provided for business departments, and meanwhile, according to the management result fed back by the business departments, the data management is iteratively improved, and the accuracy and the efficiency of the identification model are improved.
In the invention: firstly, acquiring account book data in three service systems of a marketing system, a Production Management System (PMS) and a Geographic Information System (GIS); secondly, defining a net rack topology meta-model according to the SG-CIM model, and respectively corresponding the node types of the meta-model to account data in three service systems, namely a marketing system, a Production Management System (PMS) and a Geographic Information System (GIS); then, generating a single system grid topological graph of each of three service systems of a marketing system, a Production Management System (PMS) and a Geographic Information System (GIS); then, the generated single-system network frame topological graphs of the marketing system, the Production Management System (PMS) and the Geographic Information System (GIS) are fused into a unified distribution network frame topological graph by using a graph fusion algorithm and stored in a graph database; and finally, by utilizing the consistency comparison of the files and the abnormal identification of the grid structure relationship, self-service data checking treatment service is provided for business departments, and meanwhile, according to treatment results fed back by the business departments, the data treatment and the accuracy and efficiency of the identification model are improved in an iterative mode.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (8)
1. The unified distribution network frame topology construction method based on the graph fusion technology is characterized by comprising the following steps of:
the first step, data processing:
acquiring metadata of ledger data in three service systems of a marketing system, a production management system and a geographic information system; removing outdated data, invalid data and repeated data in the metadata, and keeping the valid data;
secondly, constructing a power distribution network frame element model:
constructing a power distribution network frame topological graph according to the power distribution network frame element model by using the account book data processed in the first step;
thirdly, constructing a single-system net rack topology:
according to the power distribution network frame topological element model constructed in the second step, the machine account data processed in the first step are used for respectively constructing a marketing power distribution network frame topological graph, a GIS power distribution network frame topological graph and a PMS power distribution network frame topological graph; the constructed distribution network frame topological graph is stored in a graph database;
fourthly, constructing a fusion power distribution network frame topology:
and constructing a unified distribution network frame topology by utilizing a graph fusion algorithm and combining the constructed single-system network frame topology.
2. The method for constructing the unified distribution network rack topology based on the graph fusion technology according to claim 1, wherein in the first step, the difference of the ledger data among the three business systems is sorted out according to the metadata of the ledger data among the three business systems of the marketing system, the production management system and the geographic information system: the marketing system lacks: standing book data of a main line, a power equipment container, a conductive device, an access point, a running tower and an electric meter box; the PMS system lacks: the method comprises the following steps that (1) account data of an area, low-voltage users, an electric energy meter, an electric meter box, a metering point, an access point and an assessment user are obtained; the GIS system lacks: the method comprises the following steps that account data of an electric energy meter, a platform area, a metering point, a low-voltage user and an assessment user are obtained; and removing outdated data, invalid data and repeated data in the metadata of the three service systems, and keeping the valid data.
3. The method for constructing the unified distribution network grid topology based on the graph fusion technology according to claim 1, wherein the standardized model describes attributes, class inheritance relationships and correlation modes of users, lines, areas, transformers, substations, metering points and electric energy meters.
4. The method for constructing the unified distribution network grid topology based on the graph fusion technology according to claim 3, wherein effective data of a marketing system, a production management system and a geographic information system are mapped to node and object relationships of a standardized model based on the single-system grid topology according to the standard of CIM4.0 of the national grid company, and a single-system grid topology graph is generated and stored in a graph database.
5. The method for constructing the unified distribution network rack topology based on the graph fusion technology according to claim 4, wherein a single system network rack topological graph describes the containing, connecting, deploying and monitoring relations among the actually existing service objects in the distribution network, and the service objects in the graph have full-dimensional attribute information.
6. The method for constructing the unified distribution network rack topology based on the graph fusion technology according to claim 1, wherein in the fourth step, the matching and fusion of the multi-source network rack topology structures are realized by utilizing a graph fusion algorithm based on the single-system network rack topology structures of the marketing system, the production management system and the geographic information system, and the distribution network rack topology structures are unified.
7. The method for constructing the unified distribution network rack topology based on the graph fusion technology according to claim 6, wherein the graph fusion algorithm is to overlap three single-system network rack topology graphs, nodes corresponding to the same service entity in each graph are merged into one node, relationships corresponding to the same entity relationship are merged into one relationship, and the unique nodes and relationships in the three single-system network rack topology graphs are all added to the unified network rack distribution network topology graph to obtain the unified distribution network rack topology structure.
8. The method for constructing the unified distribution network rack topology based on the graph fusion technology as claimed in claim 1, wherein in the second step, the design of the distribution network rack element model complies with the IEC61970 standard of the international electrotechnical commission, the CIM4.0.3 standard of the national grid company complies with the IEC61970 standard of the international electrotechnical commission, and the CIM4.0.3 standard of the national grid company.
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