CN117878871A - Load transfer analysis method and device based on main distribution network integrated model - Google Patents
Load transfer analysis method and device based on main distribution network integrated model Download PDFInfo
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Abstract
The invention relates to the field of power system dispatching automation, in particular to a load transfer analysis method and device based on a main distribution network integrated model. The method comprises three parts, namely main distribution network model splicing, main network load transfer and main distribution integrated load transfer. When the equipment fails, the downstream power loss load finds out a path carrying line according to the topological connectivity, analyzes the equipment power flow transfer condition, and finally generates a main network load transfer scheme or a main-distribution integrated load transfer scheme under the condition that the equipment power flow on the path carrying line is not overloaded. The method can generate an accident disposal scheme, realize quick recovery of power supply after equipment failure, shorten recovery time, improve accident disposal efficiency and improve reliability of power supply of a power grid.
Description
Technical Field
The invention belongs to the field of power system dispatching automation, and particularly relates to a load transfer analysis method and device based on a main distribution network integrated model.
Background
In recent years, with the rapid development of economy, the demand of various industries for electric power is rapidly increasing, but due to the influence of equipment aging, extreme weather and the like, the demand of users for electric energy quality, power supply reliability and the like is difficult to meet. Meanwhile, as the structure of the power distribution system is more and more complex and the power supply load is higher and higher, the probability of faults is correspondingly increased. When the power grid equipment fails, how to recover the power supply to the user load as soon as possible and reduce the power outage range as much as possible become the problem to be solved by the power system in recent years. The load transfer is used for rapidly processing power failure accidents, obviously reducing fault loss, improving the power supply reliability of the system and other excellent performances, and becomes one of important core functions in the power system.
Disclosure of Invention
Aiming at the problems, the invention provides a load transfer analysis method and device based on a main distribution network integrated model, which are used for realizing rapid fault processing based on an operation distribution network.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
in a first aspect, the present invention provides a load transfer analysis method based on a main distribution network integrated model, including:
based on the graph, the equipment model and the real-time state of the equipment, performing topology splicing of the main network model and the distribution network model to construct an integrated equipment model;
when the main network equipment fails and the downstream equipment of the main network equipment is powered off, carrying out load transfer in the main network range according to the integrated equipment model;
and when the main network cannot recover all loads, carrying out load transfer of the main network range and the distribution network range according to the integrated equipment model.
Optionally, based on the graph, the equipment model and the real-time state of the equipment, performing topology splicing of the main network model and the distribution network model, including:
importing the graphic data into a graphic data analysis service in a SVG model;
analyzing SVG model data of the imported service, and analyzing various information of different devices;
checking various information of different devices to ensure the correctness of the graphic data;
storing the graphic data in an application system database;
importing the main network model and the distribution network model into a model data analysis service by using a CIM model;
analyzing CIM model data in the imported service, and analyzing various information of different devices in the model;
judging the conditions of various information of different devices, checking whether all the device IDs are repeated, lack of necessary information and correct topological connection (no topological island exists) so as to ensure the correctness of the main distribution network model;
according to the connection relation of the devices in the model file, unique node numbers node are distributed for the connection nodes of all the devices so as to ensure that the devices can be traversed to the associated devices during topology splicing and load transferring;
performing topology splicing of a main network model and a distribution network model to ensure that distribution network equipment can find an upstream power supply when load is transferred;
storing the spliced main distribution network model and the topology node number into an application system database;
associating the station and feeder information in the CIM with the graph ID in the SVG model, and finding a unique corresponding graph for each station and feeder;
importing the real-time state information of the equipment into a state data analysis service by using a DT model;
and (3) correlating the DT data with the equipment information in the database to ensure that each equipment has a unique and correct state.
Optionally, the performing topology splicing of the main network model and the distribution network model includes:
matching the main network with the distribution network substations, and enabling the substations with the same name to be in one-to-one correspondence according to the description of the substations;
matching equipment between a 10kV outgoing line switch in a main network substation and a 10kV outgoing line switch in a distribution network substation;
and performing topology splicing on the matched main distribution network outlet switch.
Optionally, the performing load transfer in the range of the main network according to the integrated equipment model includes:
and analyzing the equipment power flow transfer condition, and carrying out load transfer in the range of the main network when the condition that the equipment power flow on the path with the path is not overloaded is determined to be satisfied.
Optionally, the performing load transfer in the range of the main network includes:
analyzing a bus of a main network downstream carried by the equipment according to the topological connectivity;
using each power-losing bus as a starting point, and finding a main network interconnection switch through topology analysis;
and finding power supply equipment according to the interconnection switch, and providing a main network load transfer scheme.
Optionally, the load transfer of the main network range and the distribution network range according to the integrated equipment model includes:
analyzing the equipment power flow transfer condition, and carrying out load transfer in the distribution network range on the load which is not recovered when the condition that the equipment power flow on the path with the road is not overloaded is determined to be satisfied.
Optionally, the load transfer in the distribution network range is performed on the load which is not recovered, including:
the main network outgoing line switch is used as a starting point, and a distribution network interconnection switch is found through topology analysis;
and finding out the power supply equipment of the main network according to the interconnection switch, providing a main-distribution integrated load transfer scheme under the assistance of the distribution network, and recovering all power failure loads.
In a second aspect, the present invention provides a load transfer analysis device based on a main distribution network integrated model, which is characterized in that the device includes:
the construction module is used for carrying out topology splicing on the main network model and the distribution network model based on the graph, the equipment model and the real-time state of the equipment to construct an integrated equipment model;
the main network load transfer module is used for carrying out load transfer in the main network range according to the integrated equipment model when the main network equipment fails and the downstream equipment of the main network equipment is powered off;
and the main-distribution integrated load transfer module is used for transferring the loads of the main network range and the distribution network range according to the integrated equipment model when the main network cannot recover the whole load.
In a third aspect, the present invention provides a load transfer analysis device based on a main distribution network integrated model, including:
a storage medium and a processor;
the storage medium is used for storing instructions;
the processor is operative in accordance with the instructions to perform the method of any one of the methods of the first aspect.
Compared with the prior art, the invention has the beneficial effects that:
the method comprises three parts, namely main distribution network model splicing, main network load transferring and main distribution integrated load transferring. Under the condition that equipment fails, the downstream power-losing load finds out a road line according to topological connectivity, meanwhile, analyzes the equipment power flow transfer condition, meets the condition that equipment power flow on the road line is not overloaded, and finally generates a main network load transfer scheme or a main-distribution integrated load transfer scheme. The method can generate an accident disposal scheme, realize quick recovery of power supply after equipment failure, shorten recovery time, improve accident disposal efficiency and improve reliability of power supply of a power grid.
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 evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a flow chart of a load transfer analysis method based on a main distribution network integrated model according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The principle of application of the invention is described in detail below with reference to the accompanying drawings.
Example 1
The embodiment of the invention provides a load transfer analysis method based on a main distribution network integrated model, which is shown in fig. 1 and specifically comprises the following steps:
(1) Based on the graph and the equipment model, performing topology splicing of the main network model and the distribution network model to construct an integrated equipment model;
(2) When the main network equipment fails and the downstream equipment of the main network equipment is powered off, carrying out load transfer in the main network range according to the integrated equipment model;
(3) And when the main network cannot recover all loads, carrying out load transfer of the main network range and the distribution network range according to the integrated equipment model.
In a specific implementation manner of the embodiment of the present invention, based on the graph, the device model and the real-time state of the device, performing topology splicing of the main network model and the distribution network model includes:
importing the graphic data into a graphic data analysis service in a SVG model;
analyzing SVG model data of the imported service, and analyzing various information of different devices;
checking various information of different devices to ensure the correctness of the graphic data;
storing the graphic data in an application system database;
importing the main network model and the distribution network model into a model data analysis service by using a CIM model;
analyzing CIM model data in the imported service, and analyzing various information of different devices in the model;
judging the conditions of various information of different devices, checking whether all the device IDs are repeated, lack of necessary information and correct topological connection (no topological island exists) so as to ensure the correctness of the main distribution network model;
according to the connection relation of the devices in the model file, unique node numbers node are distributed for the connection nodes of all the devices so as to ensure that the devices can be traversed to the associated devices during topology splicing and load transferring;
performing topology splicing of a main network model and a distribution network model to ensure that distribution network equipment can find an upstream power supply when load is transferred;
storing the spliced main distribution network model and the topology node number into an application system database;
associating the station and feeder information in the CIM with the graph ID in the SVG model, and finding a unique corresponding graph for each station and feeder;
importing the real-time state information of the equipment into a state data analysis service by using a DT model;
and (3) correlating the DT data with the equipment information in the database to ensure that each equipment has a unique and correct state.
In a specific implementation manner of the embodiment of the present invention, the performing topology splicing of the main network model and the distribution network model includes:
matching the main network with the distribution network substations, and enabling the substations with the same name to be in one-to-one correspondence according to the description of the substations;
matching equipment between a 10kV outgoing line switch in a main network substation and a 10kV outgoing line switch in a distribution network substation;
and performing topology splicing on the matched main distribution network outlet switch.
For example, using a main network switch 1 as a point, respectively finding out equipment connected with nodes at two ends of the switch, and if the equipment connected with a node at one end does not contain a bus, storing the node1; similarly, the distribution network switch breaker2 finds out equipment connected with the two end nodes, and if the equipment comprises a feeder line segment line, the node2 is stored. And modifying the node2 of the feeder line segment line into a node1, deleting the node2 of the distribution network switch break 2, adding the feeder line segment line into equipment connected with the node1 of the main network switch break 1, and finally realizing the splicing of the connection relation of the main distribution network model.
In a specific implementation manner of the embodiment of the present invention, the performing load transfer in a main network range according to the integrated equipment model includes:
and analyzing the equipment power flow transfer condition, and carrying out load transfer in the range of the main network when the condition that the equipment power flow on the path with the path is not overloaded is determined to be satisfied.
Specifically, the performing load transfer in the range of the main network includes:
analyzing a bus of a main network downstream carried by the equipment according to the topological connectivity;
using each power-losing bus as a starting point, and finding a main network interconnection switch through topology analysis;
and finding power supply equipment according to the interconnection switch, and providing a main network load transfer scheme.
In a specific implementation manner of the embodiment of the present invention, the load transfer of the main network range and the distribution network range according to the integrated equipment model includes:
analyzing the equipment power flow transfer condition, and carrying out load transfer in the distribution network range on the load which is not recovered when the condition that the equipment power flow on the path with the road is not overloaded is determined to be satisfied.
Specifically, the load transfer in the distribution network range is performed on the load which is not recovered, and the load transfer includes:
the main network outgoing line switch is used as a starting point, and a distribution network interconnection switch is found through topology analysis;
and finding out the power supply equipment of the main network according to the interconnection switch, providing a main-distribution integrated load transfer scheme under the assistance of the distribution network, and recovering all power failure loads.
Example 2
Based on the same inventive concept as embodiment 1, in an embodiment of the present invention, a load transfer analysis device based on a main distribution network integrated model is provided, including:
the construction module is used for carrying out topology splicing on the main network model and the distribution network model based on the graph, the equipment model and the real-time state of the equipment to construct an integrated equipment model;
the main network load transfer module is used for carrying out load transfer in the main network range according to the integrated equipment model when the main network equipment fails and the downstream equipment of the main network equipment is powered off;
and the main-distribution integrated load transfer module is used for transferring the loads of the main network range and the distribution network range according to the integrated equipment model when the main network cannot recover the whole load.
In a specific implementation manner of the embodiment of the present invention, based on the graphics, the device model and the real-time status of the device, performing topology splicing of the main network model and the distribution network model includes:
importing the graphic data into a graphic data analysis service in a SVG model;
analyzing SVG model data of the imported service, and analyzing various information of different devices;
checking various information of different devices to ensure the correctness of the graphic data;
storing the graphic data in an application system database;
importing the main network model and the distribution network model into a model data analysis service by using a CIM model;
analyzing CIM model data in the imported service, and analyzing various information of different devices in the model;
judging the conditions of various information of different devices, checking whether all the device IDs are repeated, lack of necessary information and correct topological connection (no topological island exists) so as to ensure the correctness of the main distribution network model;
according to the connection relation of the devices in the model file, unique node numbers node are distributed for the connection nodes of all the devices so as to ensure that the devices can be traversed to the associated devices during topology splicing and load transferring;
performing topology splicing of a main network model and a distribution network model to ensure that distribution network equipment can find an upstream power supply when load is transferred;
storing the spliced main distribution network model and the topology node number into an application system database;
associating the station and feeder information in the CIM with the graph ID in the SVG model, and finding a unique corresponding graph for each station and feeder;
importing the real-time state information of the equipment into a state data analysis service by using a DT model;
and (3) correlating the DT data with the equipment information in the database to ensure that each equipment has a unique and correct state.
In a specific implementation manner of the embodiment of the present invention, the performing topology splicing of the main network model and the distribution network model includes:
matching the main network with the distribution network substations, and enabling the substations with the same name to be in one-to-one correspondence according to the description of the substations;
matching equipment between a 10kV outgoing line switch in a main network substation and a 10kV outgoing line switch in a distribution network substation;
and performing topology splicing on the matched main distribution network outlet switch.
In a specific implementation manner of the embodiment of the present invention, the performing load transfer in a main network range according to the integrated equipment model includes:
and analyzing the equipment power flow transfer condition, and carrying out load transfer in the range of the main network when the condition that the equipment power flow on the path with the path is not overloaded is determined to be satisfied.
Specifically, the performing load transfer in the range of the main network includes:
analyzing a bus of a main network downstream carried by the equipment according to the topological connectivity;
using each power-losing bus as a starting point, and finding a main network interconnection switch through topology analysis;
and finding power supply equipment according to the interconnection switch, and providing a main network load transfer scheme.
In a specific implementation manner of the embodiment of the present invention, the load transfer of the main network range and the distribution network range according to the integrated equipment model includes:
analyzing the equipment power flow transfer condition, and carrying out load transfer in the distribution network range on the load which is not recovered when the condition that the equipment power flow on the path with the road is not overloaded is determined to be satisfied.
Specifically, the load transfer in the distribution network range is performed on the load which is not recovered, and the load transfer includes:
the main network outgoing line switch is used as a starting point, and a distribution network interconnection switch is found through topology analysis;
and finding out the power supply equipment of the main network according to the interconnection switch, providing a main-distribution integrated load transfer scheme under the assistance of the distribution network, and recovering all power failure loads.
Example 3
Based on the same inventive concept as embodiment 1, the embodiment of the invention provides a load transfer analysis device based on a main distribution network integrated model, which comprises a storage medium and a processor;
the storage medium is used for storing instructions;
the processor is configured to operate according to the instructions to perform the method of the load transfer analysis method based on the integrated model of a primary distribution network according to any one of embodiment 1.
The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with the embodiments of the present application are all or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the elements is merely a division of some logic functions, and there may be additional divisions in actual implementation, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, or other various media capable of storing program codes.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. A load transfer analysis method and device based on a main distribution network integrated model are characterized by comprising the following steps:
based on the graph, the equipment model and the real-time state of the equipment, performing topology splicing of the main network model and the distribution network model to construct an integrated equipment model;
when the main network equipment fails and the downstream equipment of the main network equipment is powered off, carrying out load transfer in the main network range according to the integrated equipment model;
and when the main network cannot recover all loads, carrying out load transfer of the main network range and the distribution network range according to the integrated equipment model.
2. The method of claim 1, wherein the performing topology splice of the main network model and the distribution network model based on the graphics, the device model, and the real-time status of the device comprises:
the graphic data is imported into a graphic data analysis service by an SVG model;
analyzing SVG model data of the imported service, and analyzing various information of different devices;
checking various information of different devices to ensure the correctness of the graphic data;
storing the graphic data in an application system database;
importing the main network model and the distribution network model into a model data analysis service by using a CIM model;
analyzing CIM model data in the imported service, and analyzing various information of different devices in the model;
judging the conditions of various information of different devices, checking whether all the device IDs are repeated, lack of necessary information and correct topological connection (no topological island exists) so as to ensure the correctness of the main distribution network model;
according to the connection relation of the devices in the model file, unique node numbers node are distributed for the connection nodes of all the devices so as to ensure that the devices can be traversed to the associated devices during topology splicing and load transferring;
performing topology splicing of a main network model and a distribution network model to ensure that distribution network equipment can find an upstream power supply when load is transferred;
storing the spliced main distribution network model and the topology node number into an application system database;
associating the station and feeder information in the CIM with the graph ID in the SVG model, and finding a unique corresponding graph for each station and feeder;
importing the real-time state information of the equipment into a state data analysis service by using a DT model;
and (3) correlating the DT data with the equipment information in the database to ensure that each equipment has a unique and correct state. .
3. The method of claim 1, wherein the performing the topology splice of the main network model and the distribution network model comprises:
matching the main network with the distribution network substations, and enabling the substations with the same name to be in one-to-one correspondence according to the description of the substations;
matching equipment between a 10kV outgoing line switch in a main network substation and a 10kV outgoing line switch in a distribution network substation;
and performing topology splicing on the matched main distribution network outlet switch.
4. The method of claim 1, wherein said performing a main network wide load transfer according to said integrated equipment model comprises:
and analyzing the equipment power flow transfer condition, and carrying out load transfer in the range of the main network when the condition that the equipment power flow on the path with the path is not overloaded is determined to be satisfied.
5. The method of claim 4, wherein said performing a main network wide load transfer comprises:
analyzing a bus of a main network downstream carried by the equipment according to the topological connectivity;
using each power-losing bus as a starting point, and finding a main network interconnection switch through topology analysis;
and finding power supply equipment according to the interconnection switch, and providing a main network load transfer scheme.
6. The method of claim 1, wherein said performing load transfer for a main network range and a distribution network range according to the integrated equipment model comprises:
analyzing the equipment power flow transfer condition, and carrying out load transfer in the distribution network range on the load which is not recovered when the condition that the equipment power flow on the path with the road is not overloaded is determined to be satisfied.
7. The method of claim 6, wherein said performing distribution network wide load transfer on the remaining unrecovered load comprises:
the main network outgoing line switch is used as a starting point, and a distribution network interconnection switch is found through topology analysis;
and finding out the power supply equipment of the main network according to the interconnection switch, providing a main-distribution integrated load transfer scheme under the assistance of the distribution network, and recovering all power failure loads.
8. Load transfer analysis device based on main distribution network integration model, characterized by comprising:
the construction module is used for carrying out topology splicing on the main network model and the distribution network model based on the graph and the equipment model to construct an integrated equipment model;
the main network load transfer module is used for carrying out load transfer in the main network range according to the integrated equipment model when the main network equipment fails and the downstream equipment of the main network equipment is powered off;
and the main-distribution integrated load transfer module is used for transferring the loads of the main network range and the distribution network range according to the integrated equipment model when the main network cannot recover the whole load.
9. Load transfer analysis device based on main distribution network integrated model, its characterized in that: comprising the following steps:
a storage medium and a processor;
the storage medium is used for storing instructions;
the processor is configured to operate according to the instructions to perform the method of the main distribution network integration model-based load transfer method according to any one of claims 1 to 7.
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