CN111080479A - Method and device for establishing unified data model of power grid - Google Patents
Method and device for establishing unified data model of power grid Download PDFInfo
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Abstract
The invention provides a method for creating a unified data model of a power grid, which comprises the steps of determining a core service data object set of the power grid; respectively establishing a mapping relation between an entity in an IEC CIM model and a corresponding core service data object in a power grid core service data object set, a mapping relation between an entity in an SG-ERP model and a corresponding core service data object in a power grid core service data object set, and a mapping relation between an entity in an SG-CIM3.0 model and a corresponding core service data object in a power grid core service data object set to obtain a logic model of each subject domain in a power grid; integrating the logic model of each subject domain according to the cross-professional service data object in the power grid core service data object to obtain a standardized logic model of a power grid unified data model; and based on the standardized logic model, a physical data model of the unified data model of the power grid is created, and data sharing and service cooperative processing among power grid systems are realized.
Description
Technical Field
The invention relates to the technical field of data models, in particular to a method and a device for creating a unified data model of a power grid.
Background
In order to accelerate the construction of the global energy Internet and realize the aim of comprehensively constructing the modern company of 'one-strong three-excellent', the national power grid company puts higher requirements on the full-service cooperation and full-process communication of the power grid system.
At present, a data model adopted by a power grid system cannot cover core services of a national power grid, and data sharing and service cooperative processing among power grid systems cannot be realized.
Disclosure of Invention
In view of this, the invention provides a method and a device for creating a unified data model of a power grid, which cover the core services of the national power grid and realize data sharing and service cooperative processing among power grid systems.
In order to achieve the above purpose, the invention provides the following specific technical scheme:
a method for creating a unified data model of a power grid comprises the following steps:
determining a power grid core service data object set;
respectively establishing a mapping relation between an entity in an IEC CIM model and a corresponding core service data object in the power grid core service data object set, a mapping relation between an entity in an SG-ERP model and a corresponding core service data object in the power grid core service data object set, and a mapping relation between an entity in an SG-CIM3.0 model and a corresponding core service data object in the power grid core service data object set to obtain a logic model of each subject domain in a power grid, wherein each subject domain comprises a plurality of logic models corresponding to the core service data objects;
integrating the logic model of each subject domain according to the cross-professional service data object in the power grid core service data object to obtain a standardized logic model of a power grid unified data model;
and creating a physical data model of the unified power grid data model based on the standardized logic model.
Optionally, the respectively establishing a mapping relationship between an entity in the IEC CIM model and a corresponding core service data object in the power grid core service data object set, a mapping relationship between an entity in the SG-ERP model and a corresponding core service data object in the power grid core service data object set, and a mapping relationship between an entity in the SG-CIM3.0 model and a corresponding core service data object in the power grid core service data object set to obtain a logic model of each topic domain in the power grid includes:
according to the IEC CIM model and the power grid core service data object set, determining a core service data object corresponding to an entity in the IEC CIM model in the power grid core service data object set to obtain a first core service data object set;
establishing a mapping relation between an entity in the IEC CIM model and each core service data object in the first core service data object set to obtain a logic model of each core service data object in the first core service data object set;
determining a core service data object corresponding to an entity in the SG-ERP model in the power grid core service data object set according to the SG-ERP model and the power grid core service data object set to obtain a second core service data object set;
establishing a mapping relation between an entity in the SG-ERP model and each core service data object in the second core service data object set to obtain a logic model of each core service data object in the second core service data object set;
determining a core service data object corresponding to an entity in the SG-CIM3.0 model in the power grid core service data object set according to the SG-CIM3.0 model and the power grid core service data object set to obtain a third core service data object set;
establishing a mapping relation between an entity in the SG-CIM3.0 model and each core service data object in the third core service data object set to obtain a logic model of each core service data object in the third core service data object set;
and acquiring the logic model of each theme domain according to the logic model of each core service data object in the power grid core service data object set and the theme domain to which each core service data object belongs.
Optionally, when a core service data object to be completed exists in the power grid core service data object set, the core service data object to be completed does not belong to the first core service data object set, the second core service data object set, and the third core service data object set, before the obtaining of the logic model of each topic domain according to the logic model of each core service data object in the power grid core service data object set and the topic domain to which each core service data object belongs, the method further includes:
and creating a logic model of the core service data object to be completed.
Optionally, the creating a logic model of the core service data object to be completed includes:
judging whether an entity of the same type as the core service data object to be completed exists in the entity of which the logic model is obtained;
if the core service data object to be perfected exists, creating a target class of an entity in the logic model of the core service data object to be perfected, wherein the target class inherits the class of the entity with the same type as the core service data object to be perfected;
if not, creating a target class of an entity in the logic model of the core service data object to be perfected;
adding attributes and relations to the entity corresponding to the core service data object to be completed, wherein the entity, the attributes and the relations corresponding to the core service data object to be completed form a logic model of the core service data object to be completed.
Optionally, the creating a physical data model of a unified data model of the power grid based on the standardized logical model includes:
converting the entities, attributes and relationships in the standardized logic model into data tables, fields, main foreign keys and association relationships in a physical data model;
dividing data tables in the physical data model into a replication table, a random distribution table, a Hash distribution table, a temporary table and a nocopies table according to the type of a preset database;
converting the field type in the data table in the physical data model into the data type supported by the preset database;
generating a library building script according to the division result of the data table in the physical data model and the converted data type;
and operating the database establishing script to complete the establishment of the physical data model of the power grid unified data model.
An apparatus for creating a unified data model of a power grid, comprising:
the object set determining unit is used for determining a power grid core service data object set;
a mapping relation establishing unit, configured to respectively establish a mapping relation between an entity in an IEC CIM model and a corresponding core service data object in the power grid core service data object set, a mapping relation between an entity in an SG-ERP model and a corresponding core service data object in the power grid core service data object set, and a mapping relation between an entity in an SG-CIM3.0 model and a corresponding core service data object in the power grid core service data object set, so as to obtain a logic model of each topic domain in a power grid, where each topic domain includes logic models corresponding to multiple core service data objects;
the logic model integration unit is used for integrating the logic model of each subject domain according to the cross-professional service data object in the power grid core service data object to obtain a standardized logic model of a power grid unified data model;
and the physical data model creating unit is used for creating a physical data model of the unified power grid data model based on the standardized logic model.
Optionally, the mapping relationship establishing unit is specifically configured to:
according to the IEC CIM model and the power grid core service data object set, determining a core service data object corresponding to an entity in the IEC CIM model in the power grid core service data object set to obtain a first core service data object set;
establishing a mapping relation between an entity in the IEC CIM model and each core service data object in the first core service data object set to obtain a logic model of each core service data object in the first core service data object set;
determining a core service data object corresponding to an entity in the SG-ERP model in the power grid core service data object set according to the SG-ERP model and the power grid core service data object set to obtain a second core service data object set;
establishing a mapping relation between an entity in the SG-ERP model and each core service data object in the second core service data object set to obtain a logic model of each core service data object in the second core service data object set;
determining a core service data object corresponding to an entity in the SG-CIM3.0 model in the power grid core service data object set according to the SG-CIM3.0 model and the power grid core service data object set to obtain a third core service data object set;
establishing a mapping relation between an entity in the SG-CIM3.0 model and each core service data object in the third core service data object set to obtain a logic model of each core service data object in the third core service data object set;
and acquiring the logic model of each theme domain according to the logic model of each core service data object in the power grid core service data object set and the theme domain to which each core service data object belongs.
Optionally, when a core service data object to be completed exists in the power grid core service data object set, and the core service data object to be completed does not belong to the first core service data object set, does not belong to the second core service data object set, and does not belong to the third core service data object set, the mapping relationship establishing unit further includes:
and the logic model perfecting subunit is used for creating a logic model of the core service data object to be perfected.
Optionally, the logic model perfecting subunit is specifically configured to:
judging whether an entity of the same type as the core service data object to be completed exists in the entity of which the logic model is obtained;
if the core service data object to be perfected exists, creating a target class of an entity in the logic model of the core service data object to be perfected, wherein the target class inherits the class of the entity with the same type as the core service data object to be perfected;
if not, creating a target class of an entity in the logic model of the core service data object to be perfected;
adding attributes and relations to the entity corresponding to the core service data object to be completed, wherein the entity, the attributes and the relations of the core service data object to be completed form a logic model of the core service data object to be completed.
Optionally, the physical data model creating unit is specifically configured to:
converting the entities, attributes and relationships in the standardized logic model into data tables, fields, main foreign keys and association relationships in a physical data model;
dividing data tables in the physical data model into a replication table, a random distribution table, a Hash distribution table, a temporary table and a nocopies table according to the type of a preset database;
converting the field type in the data table in the physical data model into the data type supported by the preset database;
generating a library building script according to the division result of the data table in the physical data model and the converted data type;
and operating the database establishing script to complete the establishment of the physical data model of the power grid unified data model.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a method for establishing a unified data model of a power grid, which is characterized in that on the basis of determining a power grid core service data object set, a logical model of power grid production service according with an IEC standard is obtained by establishing a mapping relation between an entity in an IEC CIM model and a corresponding core service data object in the power grid core service data object set, a logical model of enterprise management in a power grid system is obtained by establishing a mapping relation between an entity in an SG-ERP model and a corresponding core service data object in the power grid core service data object set, a logical model of the existing core service is obtained by establishing a mapping relation between an entity in an SG-CIM3.0 model and a corresponding core service data object in the power grid core service data object set, and the power grid production, the enterprise management and the existing core service basically cover the national power grid core service, and integrating the logic model of each subject domain according to the cross-professional service data object in the power grid core service data object to obtain a standardized logic model of the power grid unified data model, and on the basis, creating a physical data model of the power grid unified data model to realize data sharing and service cooperative processing among power grid systems.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for creating a unified data model of a power grid according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a device for creating a unified data model of a power grid according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment discloses a method for creating a unified data model of a power grid, which covers core services of a national power grid and realizes data sharing and service cooperative processing among power grid systems. Specifically, referring to fig. 1, the method for creating the unified data model of the power grid specifically includes the following steps:
s101: determining a power grid core service data object set;
the power grid core service data object is an atomic and non-detachable service data object.
The method for determining the power grid core service data object set can be implemented in various ways, such as extraction and identification of each power grid system, or input by experts.
Each core service data object in the power grid core service data object set comprises information such as definition, attributes, relationships, coding rules, affiliated service departments, data sources and the like.
The core service data objects in the power grid core service data object set respectively belong to each topic domain in the power grid, and the topic domains in the power grid comprise: personnel, finance, materials, projects, power grids, assets, customers, markets, security, integration, and the like.
And core service data objects which belong to two or more than two theme domains simultaneously in the power grid core service data object set are cross-professional service data objects.
S102: respectively establishing a mapping relation between an entity in an IEC CIM model and a corresponding core service data object in a power grid core service data object set, a mapping relation between an entity in an SG-ERP model and a corresponding core service data object in a power grid core service data object set, and a mapping relation between an entity in an SG-CIM3.0 model and a corresponding core service data object in a power grid core service data object set to obtain a logic model of each topic domain in a power grid, wherein each topic domain comprises a plurality of logic models corresponding to the core service data objects;
the IEC CIM model conforms to the International IEC 61970/61968/62325 standard.
Specifically, according to the IEC CIM model and the power grid core service data object set, determining a core service data object corresponding to an entity in the IEC CIM model in the power grid core service data object set, and obtaining a first core service data object set;
establishing a mapping relation between an entity in the IEC CIM model and each core service data object in the first core service data object set to obtain a logic model of each core service data object in the first core service data object set;
determining a core service data object corresponding to an entity in the SG-ERP model in the power grid core service data object set according to the SG-ERP model and the power grid core service data object set to obtain a second core service data object set;
establishing a mapping relation between an entity in the SG-ERP model and each core service data object in the second core service data object set to obtain a logic model of each core service data object in the second core service data object set;
determining a core service data object corresponding to an entity in the SG-CIM3.0 model in the power grid core service data object set according to the SG-CIM3.0 model and the power grid core service data object set to obtain a third core service data object set;
establishing a mapping relation between an entity in the SG-CIM3.0 model and each core service data object in the third core service data object set to obtain a logic model of each core service data object in the third core service data object set;
and acquiring the logic model of each theme domain according to the logic model of each core service data object in the power grid core service data object set and the theme domain to which each core service data object belongs.
It should be noted that, the mapping relationship between the entity in the IEC CIM model and each core service data object in the first core service data object set, the mapping relationship between the entity in the SG-ERP model and each core service data object in the second core service data object set, and the mapping relationship between the entity in the SG-CIM3.0 model and each core service data object in the third core service data object set may be established sequentially, without limiting the execution sequence, or may be executed in parallel.
It should be noted that a core service data object to be completed, which does not belong to the first core service data object set, does not belong to the second core service data object set, and does not belong to the third core service data object set, may also exist in the power grid core service data object set, and in this case, a logical model of the core service data object to be completed needs to be created.
The method for creating the logic model of the core service data object to be perfected comprises the following steps:
judging whether an entity of the same type as the core service data object to be completed exists in the entity of which the logic model is obtained;
if the core service data object to be perfected exists, creating a target class of an entity in the logic model of the core service data object to be perfected, wherein the target class inherits the class of the entity with the same type as the core service data object to be perfected;
if not, creating a target class of an entity in the logic model of the core service data object to be perfected;
adding attributes and relations to the entity corresponding to the core service data object to be completed, wherein the entity, the attributes and the relations corresponding to the core service data object to be completed form a logic model of the core service data object to be completed.
That is, the logical model of each core business data object consists of entities, attributes, and relationships.
S103: integrating the logic model of each subject domain according to the cross-professional service data object in the power grid core service data object to obtain a standardized logic model of a power grid unified data model;
the process of integrating the logical model for each topic domain includes: and carrying out standardization, unified semantics, duplicate removal, merging, integration and splitting on the logic model of each topic domain to form a set of unified SG-CIM4.0 logic model.
The logic model integration needs to follow the following principles:
①, establishing a mapping relation, aiming at the cross-professional business data objects without cross management, determining the association relation between the cross-domain entities by combining the association relation of the cross-professional business data objects;
② splitting and merging data table object, aiming at the same core service data object managed by different subject domains, the first design mode divides the core service data object into different entities to manage according to the management requirement of the subject domains, the second design mode belongs the management right of the core service data object to a certain subject domain and merges the attributes of other domains.
Preferably, the conceptual model can be reversely created according to the integrated logic model, so that different business functions and business scenes in the model can be traced conveniently.
S104: and creating a physical data model of the unified power grid data model based on the standardized logic model.
Specifically, the entities, attributes and relationships in the standardized logical model are converted into data tables, fields, main foreign keys and association relationships in a physical data model;
dividing data tables in the physical data model into a replication table, a random distribution table, a Hash distribution table, a temporary table and a nocopies table according to the type of a preset database, and realizing the optimal design of a database table;
converting the field type in the data table in the physical data model into the data type supported by the preset database;
generating a library building script according to the division result of the data table in the physical data model and the converted data type;
and operating the database establishing script to complete the establishment of the physical data model of the power grid unified data model.
After the power grid unified data model is established, application scene requirements such as operation, distribution and dispatching integration, asset life, project overall process, power supply service command and the like and actual database environments are combined, the physical data model can be deployed and implemented, data integration and scene application inspection are carried out, and the applicability of the power grid unified data model is verified.
The power grid unified data model is the core of national power grid enterprise informatization, and the construction of the power grid unified data model is not completed at once, and a long-term iterative perfect process is required. The power grid unified data model needs to be continuously subjected to iterative improvement and adaptive adjustment aiming at the power grid unified data model according to enterprise business strategic needs, business demand changes and demand feedback of comprehensive application demonstration.
Based on the method for creating a unified data model of a power grid disclosed in the foregoing embodiment, this embodiment correspondingly discloses a device for creating a unified data model of a power grid, please refer to fig. 2, which includes:
an object set determination unit 100, configured to determine an object set of power grid core service data;
a mapping relationship establishing unit 200, configured to respectively establish a mapping relationship between an entity in an IEC CIM model and a corresponding core service data object in the power grid core service data object set, a mapping relationship between an entity in an SG-ERP model and a corresponding core service data object in the power grid core service data object set, and a mapping relationship between an entity in an SG-CIM3.0 model and a corresponding core service data object in the power grid core service data object set, so as to obtain a logic model of each topic domain in the power grid, where each topic domain includes logic models corresponding to multiple core service data objects;
the logic model integration unit 300 is configured to integrate the logic model of each topic domain according to a cross-professional service data object in the power grid core service data object to obtain a standardized logic model of a power grid unified data model;
and a physical data model creating unit 400, configured to create a physical data model of the unified data model of the power grid based on the standardized logical model.
Optionally, the mapping relationship establishing unit is specifically configured to:
according to the IEC CIM model and the power grid core service data object set, determining a core service data object corresponding to an entity in the IEC CIM model in the power grid core service data object set to obtain a first core service data object set;
establishing a mapping relation between an entity in the IEC CIM model and each core service data object in the first core service data object set to obtain a logic model of each core service data object in the first core service data object set;
determining a core service data object corresponding to an entity in the SG-ERP model in the power grid core service data object set according to the SG-ERP model and the power grid core service data object set to obtain a second core service data object set;
establishing a mapping relation between an entity in the SG-ERP model and each core service data object in the second core service data object set to obtain a logic model of each core service data object in the second core service data object set;
determining a core service data object corresponding to an entity in the SG-CIM3.0 model in the power grid core service data object set according to the SG-CIM3.0 model and the power grid core service data object set to obtain a third core service data object set;
establishing a mapping relation between an entity in the SG-CIM3.0 model and each core service data object in the third core service data object set to obtain a logic model of each core service data object in the third core service data object set;
and acquiring the logic model of each theme domain according to the logic model of each core service data object in the power grid core service data object set and the theme domain to which each core service data object belongs.
Optionally, when a core service data object to be completed exists in the power grid core service data object set, and the core service data object to be completed does not belong to the first core service data object set, does not belong to the second core service data object set, and does not belong to the third core service data object set, the mapping relationship establishing unit further includes:
and the logic model perfecting subunit is used for creating a logic model of the core service data object to be perfected.
Optionally, the logic model perfecting subunit is specifically configured to:
judging whether an entity of the same type as the core service data object to be completed exists in the entity of which the logic model is obtained;
if the core service data object to be perfected exists, creating a target class of an entity in the logic model of the core service data object to be perfected, wherein the target class inherits the class of the entity with the same type as the core service data object to be perfected;
if not, creating a target class of an entity in the logic model of the core service data object to be perfected;
adding attributes and relations to the entity corresponding to the core service data object to be completed, wherein the entity, the attributes and the relations corresponding to the core service data object to be completed form a logic model of the core service data object to be completed.
Optionally, the physical data model creating unit is specifically configured to:
converting the entities, attributes and relationships in the standardized logic model into data tables, fields, main foreign keys and association relationships in a physical data model;
dividing data tables in the physical data model into a replication table, a random distribution table, a Hash distribution table, a temporary table and a nocopies table according to the type of a preset database;
converting the field type in the data table in the physical data model into the data type supported by the preset database;
generating a library building script according to the division result of the data table in the physical data model and the converted data type;
and operating the database establishing script to complete the establishment of the physical data model of the power grid unified data model.
The device for creating a unified data model of a power grid disclosed in this embodiment obtains a logical model of a power grid production service according with the IEC standard by establishing a mapping relationship between an entity in an IEC CIM model and a corresponding core service data object in a set of power grid core service data objects on the basis of determining a set of power grid core service data objects, obtains a logical model of an enterprise management service in a power grid system by establishing a mapping relationship between an entity in an SG-ERP model and a corresponding core service data object in a set of power grid core service data objects, and obtains a logical model of an existing core service by establishing a mapping relationship between an entity in an SG-CIM3.0 model and a corresponding core service data object in a set of power grid core service data objects, because the power grid production service, the enterprise management service and the existing core service basically cover the national power grid core service, and integrating the logic model of each subject domain according to the cross-professional service data object in the power grid core service data object to obtain a standardized logic model of the power grid unified data model, and on the basis, creating a physical data model of the power grid unified data model to realize data sharing and service cooperative processing among power grid systems.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for creating a unified data model of a power grid is characterized by comprising the following steps:
determining a power grid core service data object set;
respectively establishing a mapping relation between an entity in an IEC CIM model and a corresponding core service data object in the power grid core service data object set, a mapping relation between an entity in an SG-ERP model and a corresponding core service data object in the power grid core service data object set, and a mapping relation between an entity in an SG-CIM3.0 model and a corresponding core service data object in the power grid core service data object set to obtain a logic model of each subject domain in a power grid, wherein each subject domain comprises a plurality of logic models corresponding to the core service data objects;
integrating the logic model of each subject domain according to the cross-professional service data object in the power grid core service data object to obtain a standardized logic model of a power grid unified data model;
and creating a physical data model of the unified power grid data model based on the standardized logic model.
2. The method of claim 1, wherein the establishing a mapping relationship between an entity in an IEC CIM model and a corresponding core service data object in the set of power grid core service data objects, a mapping relationship between an entity in an SG-ERP model and a corresponding core service data object in the set of power grid core service data objects, and a mapping relationship between an entity in an SG-CIM3.0 model and a corresponding core service data object in the set of power grid core service data objects, respectively, to obtain a logical model of each subject domain in the power grid comprises:
according to the IEC CIM model and the power grid core service data object set, determining a core service data object corresponding to an entity in the IEC CIM model in the power grid core service data object set to obtain a first core service data object set;
establishing a mapping relation between an entity in the IEC CIM model and each core service data object in the first core service data object set to obtain a logic model of each core service data object in the first core service data object set;
determining a core service data object corresponding to an entity in the SG-ERP model in the power grid core service data object set according to the SG-ERP model and the power grid core service data object set to obtain a second core service data object set;
establishing a mapping relation between an entity in the SG-ERP model and each core service data object in the second core service data object set to obtain a logic model of each core service data object in the second core service data object set;
determining a core service data object corresponding to an entity in the SG-CIM3.0 model in the power grid core service data object set according to the SG-CIM3.0 model and the power grid core service data object set to obtain a third core service data object set;
establishing a mapping relation between an entity in the SG-CIM3.0 model and each core service data object in the third core service data object set to obtain a logic model of each core service data object in the third core service data object set;
and acquiring the logic model of each theme domain according to the logic model of each core service data object in the power grid core service data object set and the theme domain to which each core service data object belongs.
3. The method according to claim 2, wherein when there is a core service data object to be completed in the power grid core service data object set that does not belong to the first core service data object set, does not belong to the second core service data object set, and does not belong to a third core service data object set, before the obtaining the logical model of each topic domain according to the logical model of each core service data object in the power grid core service data object set and the topic domain to which each core service data object belongs, the method further comprises:
and creating a logic model of the core service data object to be completed.
4. The method of claim 3, wherein the creating the logical model of the core business data object to be completed comprises:
judging whether an entity of the same type as the core service data object to be completed exists in the entity of which the logic model is obtained;
if the core service data object to be perfected exists, creating a target class of an entity in the logic model of the core service data object to be perfected, wherein the target class inherits the class of the entity with the same type as the core service data object to be perfected;
if not, creating a target class of an entity in the logic model of the core service data object to be perfected;
adding attributes and relations to the entity corresponding to the core service data object to be completed, wherein the entity, the attributes and the relations corresponding to the core service data object to be completed form a logic model of the core service data object to be completed.
5. The method of claim 1, wherein creating a physical data model of a unified data model of the power grid based on the standardized logical model comprises:
converting the entities, attributes and relationships in the standardized logic model into data tables, fields, main foreign keys and association relationships in a physical data model;
dividing data tables in the physical data model into a replication table, a random distribution table, a Hash distribution table, a temporary table and a nocopies table according to the type of a preset database;
converting the field type in the data table in the physical data model into the data type supported by the preset database;
generating a library building script according to the division result of the data table in the physical data model and the converted data type;
and operating the database establishing script to complete the establishment of the physical data model of the power grid unified data model.
6. An apparatus for creating a unified data model of a power grid, comprising:
the object set determining unit is used for determining a power grid core service data object set;
a mapping relation establishing unit, configured to respectively establish a mapping relation between an entity in an IEC CIM model and a corresponding core service data object in the power grid core service data object set, a mapping relation between an entity in an SG-ERP model and a corresponding core service data object in the power grid core service data object set, and a mapping relation between an entity in an SG-CIM3.0 model and a corresponding core service data object in the power grid core service data object set, so as to obtain a logic model of each topic domain in a power grid, where each topic domain includes logic models corresponding to multiple core service data objects;
the logic model integration unit is used for integrating the logic model of each subject domain according to the cross-professional service data object in the power grid core service data object to obtain a standardized logic model of a power grid unified data model;
and the physical data model creating unit is used for creating a physical data model of the unified power grid data model based on the standardized logic model.
7. The apparatus according to claim 6, wherein the mapping relationship establishing unit is specifically configured to:
according to the IEC CIM model and the power grid core service data object set, determining a core service data object corresponding to an entity in the IEC CIM model in the power grid core service data object set to obtain a first core service data object set;
establishing a mapping relation between an entity in the IEC CIM model and each core service data object in the first core service data object set to obtain a logic model of each core service data object in the first core service data object set;
determining a core service data object corresponding to an entity in the SG-ERP model in the power grid core service data object set according to the SG-ERP model and the power grid core service data object set to obtain a second core service data object set;
establishing a mapping relation between an entity in the SG-ERP model and each core service data object in the second core service data object set to obtain a logic model of each core service data object in the second core service data object set;
determining a core service data object corresponding to an entity in the SG-CIM3.0 model in the power grid core service data object set according to the SG-CIM3.0 model and the power grid core service data object set to obtain a third core service data object set;
establishing a mapping relation between an entity in the SG-CIM3.0 model and each core service data object in the third core service data object set to obtain a logic model of each core service data object in the third core service data object set;
and acquiring the logic model of each theme domain according to the logic model of each core service data object in the power grid core service data object set and the theme domain to which each core service data object belongs.
8. The apparatus according to claim 7, wherein when there is a core service data object to be completed in the power grid core service data object set that does not belong to the first core service data object set, does not belong to the second core service data object set, and does not belong to a third core service data object set, the mapping relationship establishing unit further includes:
and the logic model perfecting subunit is used for creating a logic model of the core service data object to be perfected.
9. The apparatus of claim 8, wherein the logic model perfecting subunit is specifically configured to:
judging whether an entity of the same type as the core service data object to be completed exists in the entity of which the logic model is obtained;
if the core service data object to be perfected exists, creating a target class of an entity in the logic model of the core service data object to be perfected, wherein the target class inherits the class of the entity with the same type as the core service data object to be perfected;
if not, creating a target class of an entity in the logic model of the core service data object to be perfected;
adding attributes and relations to the entity corresponding to the core service data object to be completed, wherein the entity, the attributes and the relations corresponding to the core service data object to be completed form a logic model of the core service data object to be completed.
10. The apparatus according to claim 6, wherein the physical data model creation unit is specifically configured to:
converting the entities, attributes and relationships in the standardized logic model into data tables, fields, main foreign keys and association relationships in a physical data model;
dividing data tables in the physical data model into a replication table, a random distribution table, a Hash distribution table, a temporary table and a nocopies table according to the type of a preset database;
converting the field type in the data table in the physical data model into the data type supported by the preset database;
generating a library building script according to the division result of the data table in the physical data model and the converted data type;
and operating the database establishing script to complete the establishment of the physical data model of the power grid unified data model.
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