CN112464442A - Power grid model splicing method and system - Google Patents
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Abstract
The invention relates to the technical field of computers, and particularly discloses a power grid model splicing method. The method comprises the following steps: acquiring a first power grid model to be spliced and a second power grid model to be spliced; determining a matching condition according to a preset splicing attribute, and carrying out boundary identification on the first power grid model to be spliced and the second power grid model to be spliced according to the matching condition to obtain splicing boundary information; according to the splicing boundary, the first power grid model to be spliced and the second power grid model to be spliced are divided into an inner network part and an outer network part respectively; and eliminating the outer net part, and splicing the inner net parts of the first power grid model to be spliced and the second power grid model to be spliced to obtain the whole-net model. With this method, it is possible to reduce an error generated when the disconnection is calculated at a position closer to the boundary.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a power grid model splicing method and system.
Background
With the formation of the interconnection of large power grids in China and the continuous promotion of the construction of smart power grids, the structure of modern power grids is increasingly complex, the operation modes are increasingly diversified, and the power system gradually develops towards the direction of the extra-high voltage large power grid pattern. The construction of the extra-high voltage large power grid causes mutual influence between the upper and lower-level power grids and the same-level power grid, and in order to ensure the stable operation of the power grid mode, the principle of unified scheduling and hierarchical management is introduced to supervise the operation state of the power grid. Generally, most EMS power grid modeling only carries out complete modeling on a power grid within the dispatching range of the current level, and an external power grid is regarded as a classic power grid mode and is hung on an external power grid line to inject power to judge the running state of the external power grid. The scheduling method generates a large error when calculating the disconnection of a position close to the boundary, so that the power grid model needs to be spliced.
Disclosure of Invention
The invention provides a power grid model splicing method and system, and aims to solve the technical problem that in the related art, an outer grid is hung on an outer grid connecting line, so that a larger error is generated when the position close to a boundary is calculated and switched on or switched off.
The first aspect of the embodiment of the invention discloses a power grid model splicing method, which comprises the following steps:
acquiring a first power grid model to be spliced and a second power grid model to be spliced;
determining matching conditions according to preset splicing attributes, and performing boundary identification on the first power grid model to be spliced and the second power grid model to be spliced according to the matching conditions to obtain splicing boundary information;
according to the splicing boundary information, the first power grid model to be spliced and the second power grid model to be spliced are respectively divided into an inner network part and an outer network part;
and removing the outer network part, and splicing the inner network parts of the first power grid model to be spliced and the second power grid model to be spliced to obtain a whole network model.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the splicing attribute at least includes a voltage class, a region name, a station name, and a switch number.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, before dividing the first to-be-spliced power grid model and the second to-be-spliced power grid model into an internal grid part and an external grid part respectively according to the splicing boundary information, the method further includes:
searching a boundary station according to the splicing boundary information;
acquiring station information and equipment information of the boundary station;
checking whether the splicing boundary meets the model splicing requirement or not according to the station information and the equipment information;
and if the splicing boundary meets the model splicing requirement, executing the step of dividing the first power grid model to be spliced and the second power grid model to be spliced into an inner network part and an outer network part respectively according to the splicing boundary information.
The second aspect of the embodiment of the invention discloses a power grid model splicing system, which comprises:
the acquisition module is used for acquiring a first power grid model to be spliced and a second power grid model to be spliced;
the boundary identification module is used for determining a matching condition according to a preset splicing attribute and carrying out boundary identification on the first power grid model to be spliced and the second power grid model to be spliced according to the matching condition to obtain splicing boundary information;
the splitting module is used for splitting the first power grid model to be spliced and the second power grid model to be spliced into an internal network part and an external network part according to the splicing boundary information;
the removing module is used for removing the outer net parts of the first power grid model to be spliced and the second power grid model to be spliced;
and the model splicing module is used for splicing the inner network parts of the first power grid model to be spliced and the second power grid model to be spliced to obtain a whole network model.
In a second aspect of the embodiment of the present invention, the splicing attribute at least includes a voltage class, a zone name, a station name, and a switch number.
In a second aspect of the embodiments of the present invention, the system further includes:
the searching module is used for searching the boundary station according to the splicing boundary information;
the acquisition module is further used for acquiring station information and equipment information of the boundary station;
the checking module is used for checking whether the splicing boundary meets the model splicing requirement or not according to the station information and the equipment information;
the model splicing module is specifically configured to divide the first to-be-spliced power grid model and the second to-be-spliced power grid model into an inner network part and an outer network part according to the splicing boundary information after the checking module checks that the splicing boundary meets the model splicing requirement.
A third aspect of the embodiments of the present invention discloses a computer-readable storage medium, which stores a computer program, where the computer program enables a computer to execute the power grid model splicing method disclosed in the first aspect of the embodiments of the present invention.
A fourth aspect of the embodiments of the present invention discloses an electronic device, including:
a processor;
a memory having computer readable instructions stored thereon which, when executed by the processor, implement the method as previously described.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
the power grid model splicing method provided by the invention comprises the following steps of obtaining a first power grid model to be spliced and a second power grid model to be spliced; determining a matching condition according to a preset splicing attribute, and carrying out boundary identification on the first power grid model to be spliced and the second power grid model to be spliced according to the matching condition to obtain splicing boundary information; according to the splicing boundary, the first power grid model to be spliced and the second power grid model to be spliced are divided into an inner network part and an outer network part respectively; and eliminating the outer net part, and splicing the inner net parts of the first power grid model to be spliced and the second power grid model to be spliced to obtain the whole-net model.
According to the method, the power grid models which accord with the basic splicing attribute can be spliced, the problem that a large error is generated when the power grid models are cut off at a position close to a boundary due to the fact that the outer net is hung on an outer net connecting line is solved, and the model splicing method is high in expansibility and usability, suitable for data splicing in different occasions and greatly improved in model splicing efficiency.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a flow diagram illustrating a method of power grid model stitching in accordance with an exemplary embodiment;
FIG. 2 is a flow diagram illustrating another method of grid model stitching in accordance with an exemplary embodiment;
fig. 3 is a block diagram illustrating a grid model stitching system in accordance with an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Fig. 1 is a flow chart illustrating a method of power grid model stitching according to an exemplary embodiment. As shown in fig. 1, the method includes the following steps.
And 102, determining a matching condition by the power grid model splicing system according to a preset splicing attribute, and carrying out boundary identification on the first power grid model to be spliced and the second power grid model to be spliced according to the matching condition to obtain splicing boundary information.
As an alternative embodiment, the splicing attribute may include, but is not limited to, a voltage class, a name of a belonging area, a name of a factory station, and a switch number. The splice boundary information may be used to define a splice boundary, which may include information for the boundary device and the device taker.
In the embodiment of the invention, most model splicing methods require completely consistent boundary modeling to splice, and practical application is difficult to ensure the modeling normalization of power grid models in different units and areas, so that the splicing efficiency is extremely low. The method for determining the matching conditions by the basic splicing attributes to complete model splicing has low requirements on modeling, can adapt to splicing of more models, and has high usability.
And 103, dividing the first power grid model to be spliced and the second power grid model to be spliced into an inner network part and an outer network part respectively by the power grid model splicing system according to the splicing boundary information.
In the embodiment of the invention, the power grid model splicing system can divide the first power grid model to be spliced into an internal network part and an external network part according to the splicing boundary information, and divide the second power grid model to be spliced into the internal network part and the external network part.
In the embodiment of the present invention, optionally, according to the splicing boundary information, the first to-be-spliced power grid model and the second to-be-spliced power grid model are divided into an internal network part and an external network part, which may specifically include the following steps: determining boundary equipment related to a corresponding area (an area where a first power grid model to be spliced or a second power grid model to be spliced is located) according to splicing boundary information, coloring physical nodes on identification positions corresponding to the boundary equipment and the area, further coloring topology, shielding off a switch and a disconnecting link in the coloring process, forbidding a search path to pass through the boundary equipment nodes, recording equipment corresponding to the node while coloring, searching the path, and finally completing the segmentation of the power grid model according to a coloring result.
And 104, eliminating an outer net part by the power grid model splicing system, and splicing the inner net parts of the first power grid model to be spliced and the second power grid model to be spliced to obtain a whole-net model.
In the embodiment of the present invention, after the internal division of the power grid model is completed in step 103, the respective external grid parts of the first power grid model to be spliced and the second power grid model to be spliced are removed, and the description of the respective internal models is retained as they are, and a unique part without repeated description is used, so that redundancy of model splicing is avoided; further, model splicing can be completed according to the defined boundary equipment of the fetching party area and the inner network parts of the first power grid model to be spliced and the second power grid model to be spliced; it should be noted that, according to the splicing boundary information, a user (area) of the boundary device can be determined.
As an optional implementation manner, after obtaining the full-network model, the following steps may be further performed:
calculating a power flow unbalance amount according to the boundary power flows of the first power grid model to be spliced and the second power grid model to be spliced, and judging whether boundary power flow unbalance occurs or not according to the power flow unbalance amount;
and if the boundary power flow unbalance occurs, adjusting and correcting the boundary nodes according to the power flow unbalance.
In the embodiment of the invention, the problem of boundary tidal current unbalance can occur in the process of splicing the power grid model, so that parameters of spliced boundary nodes can be corrected according to the tidal current unbalance to ensure the integrity of the network model.
Therefore, by implementing the power grid model splicing method described in fig. 1, the power grid models meeting the basic splicing attribute can be spliced, the problem that a calculation position close to a boundary generates a large error when the power grid models are cut off due to the fact that the outer net is hung on an outer net connecting line is solved, and the model splicing method is high in expansibility and usability, is suitable for data splicing in different occasions, and greatly improves the efficiency of model splicing.
Referring to fig. 2, fig. 2 is a schematic flow chart of another power grid model splicing method disclosed in the embodiment of the present invention. As shown in fig. 2, the power grid model splicing method may include the following steps:
in the embodiment of the present invention, the power grid model splicing method includes steps 201 to 202, and for the description of the steps 201 to 202, please refer to the detailed description of the first embodiment for the steps 101 to 102, which is not described again in the embodiment of the present invention.
And step 203, the power grid model splicing system searches boundary stations according to the splicing boundary information.
And 204, the power grid model splicing system acquires station information and equipment information of the boundary station.
In the embodiment of the present invention, the station information may include basic information such as a boundary station ID, a name, and a belonging area; the device information may comprise device information of line side devices of the border plant.
In the embodiment of the invention, the power grid model splicing system checks whether the splicing boundary meets the model splicing requirement according to the station information and the equipment information, specifically, the basic information including the ID, the name and the belonging area of the boundary station can be verified according to the station information, the validity of the line-end equipment of the boundary station is verified, and if the verification of the two is not wrong, whether the splicing boundary meets the model splicing requirement is determined.
And step 206, dividing the first power grid model to be spliced and the second power grid model to be spliced into an inner network part and an outer network part respectively by the power grid model splicing system according to the splicing boundary information.
And step 207, the power grid model splicing system eliminates an outer grid part, and splices the inner grid parts of the first power grid model to be spliced and the second power grid model to be spliced to obtain a whole grid model.
Therefore, the power grid model splicing method described in the figure 2 can splice power grid models meeting basic splicing attributes, the problem that a calculation position close to a boundary generates a large error when the power grid models are cut off due to the fact that an outer net is hung on an outer net connecting line is solved, the model splicing method is high in expansibility and usability, and is suitable for data splicing in different occasions, and the model splicing efficiency is greatly improved.
Fig. 3 is a block diagram illustrating a grid model stitching system in accordance with an exemplary embodiment. As shown in fig. 3, the system includes:
the obtaining module 301 is configured to obtain a first to-be-spliced power grid model and a second to-be-spliced power grid model, and provide the first to-be-spliced power grid model and the second to-be-spliced power grid model to the boundary identifying module 302.
The boundary identification module 302 is configured to determine a matching condition according to a preset splicing attribute, perform boundary identification on the first to-be-spliced power grid model and the second to-be-spliced power grid model according to the matching condition, obtain splicing boundary information, and provide the splicing boundary information to the segmentation module 303.
And the dividing module 303 is configured to divide the first to-be-spliced power grid model and the second to-be-spliced power grid model into an internal network part and an external network part respectively according to the splicing boundary information, and trigger the rejecting module 304 to start.
And the removing module 304 is configured to remove the outer grid parts of the first to-be-spliced power grid model and the second to-be-spliced power grid model, and trigger the model splicing module 305 to start.
And the model splicing module 305 is configured to splice the intranet parts of the first to-be-spliced power grid model and the second to-be-spliced power grid model to obtain a full-network model.
As an optional implementation manner, the splicing attribute may include at least a voltage level, a zone name, a station name, and a switch number.
As another optional implementation, the system may further include:
the searching module is used for searching the boundary station according to the splicing boundary information;
the acquisition module is also used for acquiring station information and equipment information of the boundary station;
the checking module is used for checking whether the splicing boundary meets the model splicing requirement or not according to the station information and the equipment information;
and the model splicing module is specifically used for dividing the first power grid model to be spliced and the second power grid model to be spliced into an inner network part and an outer network part respectively according to the splicing boundary information after the checking module checks that the splicing boundary meets the model splicing requirement.
Therefore, the system described in the figure 3 can be implemented to splice the power grid models meeting the basic splicing attribute, the problem that a large error is generated when the calculation position close to the boundary is cut off due to the fact that the outer net is hung on the outer net connecting line is solved, and the model splicing method is high in expansibility and usability, is suitable for data splicing in different occasions, and greatly improves the efficiency of model splicing.
The present invention also provides an electronic device, including:
a processor;
a memory having computer readable instructions stored thereon which, when executed by the processor, implement the grid model stitching method as previously described.
In an exemplary embodiment, the invention further provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the power grid model splicing method as set forth above.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (6)
1. A power grid model splicing method is characterized by comprising the following steps:
acquiring a first power grid model to be spliced and a second power grid model to be spliced;
determining matching conditions according to preset splicing attributes, and performing boundary identification on the first power grid model to be spliced and the second power grid model to be spliced according to the matching conditions to obtain splicing boundary information;
according to the splicing boundary information, the first power grid model to be spliced and the second power grid model to be spliced are respectively divided into an inner network part and an outer network part;
and removing the outer network part, and splicing the inner network parts of the first power grid model to be spliced and the second power grid model to be spliced to obtain a whole network model.
2. The method of claim 1, wherein the splice attributes include at least a voltage class, a zone name, a station name, and a switch number.
3. The method according to claim 1, wherein before the first power grid model to be spliced and the second power grid model to be spliced are divided into an internal grid part and an external grid part according to the splicing boundary information, the method further comprises:
searching a boundary station according to the splicing boundary information;
acquiring station information and equipment information of the boundary station;
checking whether the splicing boundary meets the model splicing requirement or not according to the station information and the equipment information;
and if the splicing boundary meets the model splicing requirement, executing the step of dividing the first power grid model to be spliced and the second power grid model to be spliced into an inner network part and an outer network part respectively according to the splicing boundary information.
4. A power grid model stitching system, the system comprising:
the acquisition module is used for acquiring a first power grid model to be spliced and a second power grid model to be spliced;
the boundary identification module is used for determining a matching condition according to a preset splicing attribute and carrying out boundary identification on the first power grid model to be spliced and the second power grid model to be spliced according to the matching condition to obtain splicing boundary information;
the splitting module is used for splitting the first power grid model to be spliced and the second power grid model to be spliced into an internal network part and an external network part according to the splicing boundary information;
the removing module is used for removing the outer net parts of the first power grid model to be spliced and the second power grid model to be spliced;
and the model splicing module is used for splicing the inner network parts of the first power grid model to be spliced and the second power grid model to be spliced to obtain a whole network model.
5. The system of claim 4, wherein the splice attributes include at least a voltage class, a zone name, a station name, and a switch number.
6. The system of claim 4, further comprising:
the searching module is used for searching the boundary station according to the splicing boundary information;
the acquisition module is further used for acquiring station information and equipment information of the boundary station;
the checking module is used for checking whether the splicing boundary meets the model splicing requirement or not according to the station information and the equipment information;
the model splicing module is specifically configured to divide the first to-be-spliced power grid model and the second to-be-spliced power grid model into an inner network part and an outer network part according to the splicing boundary information after the checking module checks that the splicing boundary meets the model splicing requirement.
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