CN112818568A - Method, device, equipment and storage medium for determining topological relation of low-voltage transformer area - Google Patents
Method, device, equipment and storage medium for determining topological relation of low-voltage transformer area Download PDFInfo
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- CN112818568A CN112818568A CN202110236970.1A CN202110236970A CN112818568A CN 112818568 A CN112818568 A CN 112818568A CN 202110236970 A CN202110236970 A CN 202110236970A CN 112818568 A CN112818568 A CN 112818568A
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Abstract
The invention discloses a method, a device, equipment and a storage medium for determining a topological relation of a low-voltage transformer area, wherein the method comprises the following steps: when detecting that all user terminals in the power supply range of the low-voltage distribution transformer receive carrier detection signals, acquiring a low-voltage distribution area in a low-voltage power supply network; determining the position information of the user terminal in the low-voltage distribution area by establishing the relation between the low-voltage distribution area and the geographic information system; calculating distance information of a low-voltage distribution transformer in a low-voltage transformer area for supplying power to a user terminal through a low-voltage power transmission line; and (4) acquiring the topological relation of the low-voltage transformer area by using the user terminal and the low-voltage distribution transformer as nodes, overlapping position information and distance information. The method can solve the problems that the low-voltage distribution area topological graph drawn in the prior art is lack of geographic information characteristics and poor in practicability, enriches the characteristics in the low-voltage distribution area topological relation, simplifies the difficulty of topological drawing, and improves the accuracy of confirming the topological relation of the low-voltage distribution area.
Description
Technical Field
The embodiment of the invention relates to a power supply network topological relation identification technology, in particular to a method, a device, equipment and a storage medium for determining a topological relation of a low-voltage transformer area.
Background
The drawing of the topological relation graph of the low-voltage transformer area power supply network is important for improving the power supply reliability management level and the power supply service capacity of a power grid company. The topological relation of the power supply network of the low-voltage transformer area is identified, the connection relation between each electrical device of a park, a residential district, a building and the like and a power supply source of the electrical device is obtained substantially reliably, and the connection relations are stored in a certain mode.
The traditional topological structure drawing method of the low-voltage distribution area power supply network is to manually draw according to the existing line topological data of the power distribution network, but the method needs to invest a large amount of manpower to draw and manage, and needs to manually revise again when the line is changed. Furthermore, in the currently proposed method for identifying the topological structure of the low-voltage power supply network in the carrier communication-based manner to assist in drawing, the functional requirements on each end device are high, and the drawn topological graph only has simple topological information and does not have sufficient geographic information characteristics, so that the practicability in the actual implementation engineering is poor.
Disclosure of Invention
The embodiment of the invention provides a method, a device, equipment and a storage medium for determining a topological relation of a low-voltage transformer area, and aims to solve the problems that a low-voltage transformer area topological graph drawn in the prior art is lack of geographic information characteristics and poor in practicability.
In a first aspect, an embodiment of the present invention provides a method for determining a topological relation of a low-voltage station area, where the method includes:
when detecting that all user terminals in the power supply range of the low-voltage distribution transformer receive carrier detection signals, acquiring a low-voltage distribution area in a low-voltage power supply network;
determining location information of a user terminal located in the low-voltage transformer area by establishing a connection between the low-voltage transformer area and a geographic information system;
calculating distance information of a low-voltage distribution transformer in the low-voltage transformer area for supplying power to a user terminal through a low-voltage power transmission line;
and overlapping the position information and the distance information by using the user terminal and the low-voltage distribution transformer as nodes to obtain the topological relation of the low-voltage distribution area.
In a second aspect, an embodiment of the present invention further provides a device for determining a topological relation of a low-voltage transformer area, where the device includes:
the low-voltage distribution area acquisition module is used for acquiring a low-voltage distribution area in a low-voltage power supply network when detecting that all user terminals in the power supply range of the low-voltage distribution transformer receive carrier detection signals;
the position information acquisition module is used for determining the position information of the user terminal in the low-voltage distribution area by establishing the relation between the low-voltage distribution area and a geographic information system;
the distance information calculation module is used for calculating the distance information of the low-voltage distribution transformer in the low-voltage transformer area for supplying power to the user terminal through a low-voltage power transmission line;
and the topological relation determining module is used for superposing the position information and the distance information by taking the user terminal and the low-voltage distribution transformer as nodes to obtain the topological relation of the low-voltage distribution area.
In a third aspect, an embodiment of the present invention further provides a computer device, where the computer device includes:
one or more processors;
a memory for storing one or more programs;
when executed by the one or more processors, the one or more programs cause the one or more processors to implement the method for determining a low-voltage zone topology relationship according to the first aspect.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for determining a low-voltage-station-area topological relation according to the first aspect.
The embodiment of the invention can solve the problems that the low-voltage distribution area topological graph drawn in the prior art lacks geographic information characteristics and has poor practicability by acquiring the low-voltage distribution area zone area information and calculating the distance information of the low-voltage distribution transformer in the low-voltage distribution area zone area by establishing the relation between the low-voltage distribution area zone area and the geographic information system to determine the position information of the user terminal in the low-voltage distribution area zone area and calculating the distance information of the low-voltage distribution transformer in the low-voltage distribution area zone area to supply power to the user terminal through the low-voltage power transmission line when detecting that all the user terminals in the power supply range of the low-voltage distribution transformer receive the carrier detection signal, practical characteristics in the topological relation of the low-voltage transformer area are enriched on the basis of the position information and the distance information, the difficulty of topology drawing is simplified, and the accuracy of confirming the topological relation of the low-voltage transformer area is improved.
Drawings
Fig. 1 is a flowchart of a method for determining a topological relation of a low-voltage transformer area according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a visualization system for managing a low-voltage transformer area according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a device for determining a topological relation of a low-voltage distribution area according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a computer device according to a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that: in the description of the embodiments of the present invention, the terms "first," "second," "third," "fourth," "fifth," and the like are used merely to distinguish one element from another, and are not intended to indicate or imply relative importance.
Example one
Fig. 1 is a flowchart of a method for determining a topological relation of low-voltage transformer areas according to an embodiment of the present invention, where this embodiment is applicable to a case where a topological relation of low-voltage transformer areas is identified in a power supply network, and the method may be executed by a device for determining a topological relation of low-voltage transformer areas, where the device for determining a topological relation of low-voltage transformer areas may be implemented by software and/or hardware, and may be configured in a computer device, such as a server, a workstation, a personal computer, and the like, and the method specifically includes the following steps:
s101, when all user terminals in the power supply range of the low-voltage distribution transformer are detected to receive carrier detection signals, a low-voltage distribution area in a low-voltage power supply network is obtained.
In an electric power system, whether a power supply network is a low-voltage power supply network or a high-voltage power supply network is generally determined according to electrical loads, and the embodiment of the invention mainly aims at carrying out technical explanation on how to confirm the topological relation of low-voltage power stations in the low-voltage power supply network.
The low-voltage distribution transformer is a transformer which provides distribution for low-voltage electric loads such as communities, buildings and parks in a low-voltage power supply network, the power supply range of the low-voltage distribution transformer can be represented by the area occupied by the electric loads connected with the low-voltage distribution transformer in the low-voltage power supply network, and the electric loads can be specifically represented as a plurality of user terminals, such as a display electric meter for residential electricity consumption, an electric energy meter arranged in a building power distribution cabinet and the like.
The transformer area in this embodiment is an area supplied with power by a transformer (also referred to as a transformer), and the low-voltage transformer area is a power supply range or area specifically referring to a low-voltage distribution transformer.
The topological relation generally refers to the mutual relation among all spatial data meeting the topological geometry principle, the topological relation in the embodiment refers to the position relation between a low-voltage distribution transformer and a plurality of power utilization terminals in a low-voltage distribution area, and drawing a topological relation graph of the low-voltage distribution area by applying the topological relation can help power utilization management, so that management in the aspects of power personnel division, power equipment maintenance, electric quantity calculation, power line loss statistics and the like is more standard and scientific.
In this embodiment, in order to determine a low-voltage distribution area in a low-voltage power supply network, a detection signal to be transmitted may be preset in each low-voltage distribution transformer in the low-voltage power supply network, and when the low-voltage distribution transformer receives a signal transmission instruction, the low-voltage distribution transformer transmits the detection signal to a plurality of power consumption terminals through a low-voltage power transmission line, and the detection signal is referred to as a carrier detection signal because it is transmitted by the low-voltage power transmission line, and detects whether the carrier detection signal transmitted by each low-voltage distribution transformer is received by a user terminal in the power supply network, and if so, determines that a power supply range formed by the user terminal that receives the carrier detection signal and centered on the low-voltage distribution transformer is the low-voltage distribution area.
In a specific implementation, S101 may include the following specific steps:
determining an initial position of a low voltage distribution transformer in a low voltage supply network;
taking the initial position as a center, driving a low-voltage distribution transformer to send a carrier detection signal to a low-voltage power transmission line;
and taking the area where all user terminals receiving the carrier detection signal through the low-voltage power transmission line in the low-voltage power supply network are as a low-voltage distribution area matched with the low-voltage distribution transformer.
And S102, determining the position information of the user terminal in the low-voltage area by establishing the relation between the low-voltage area and the geographic information system.
After the low-voltage distribution area in the low-voltage power supply network is confirmed, the number of the low-voltage distribution area in the low-voltage power supply network can be inquired, communication equipment associated with the number is called to establish communication connection between the low-voltage distribution area and a geographic information system (also called a GIS system), and when the communication connection is successfully established, position information of a user terminal located in the low-voltage distribution area is obtained from the geographic information system.
Based on the geographic position information of all the user terminals in the low-voltage station area, which is acquired from the geographic information system, a scatter diagram can be drawn in advance, each point in the scatter diagram is a user terminal, the scatter diagram can be used as a user position coordinate diagram for subsequently confirming the topological relation of the low-voltage station area, and the user position coordinate diagram can be used as a prototype for subsequently drawing the topological relation diagram of the low-voltage station area if needed.
And S103, calculating distance information of the low-voltage distribution transformer in the low-voltage transformer area for supplying power to the user terminal through the low-voltage power transmission line.
In a specific implementation, a low-voltage distribution transformer in a low-voltage transformer area is driven to send a carrier measurement signal to a user terminal through a low-voltage power transmission line; and calculating distance information between the user terminal and the low-voltage distribution transformer based on the carrier measurement signal.
In this embodiment, the distance information between the user terminal and the low-voltage distribution transformer is calculated by using the carrier measurement signal, in order to obtain accurate distance information, clock synchronization operation needs to be performed on the low-voltage distribution transformer and the user terminal at first, if the clock synchronization operation is completed during the execution, a first time when the carrier measurement signal is sent by the low-voltage distribution transformer is recorded, a second time when the carrier measurement signal reaches the user terminal is recorded, the distance information between the user terminal and the low-voltage distribution transformer is calculated based on the first time and the second time, for example, a time difference between the first time and the second time is calculated, a transmission rate of the carrier measurement signal on a low-voltage power transmission line in a low-voltage distribution area is determined, and a product of the time difference and the transmission rate is used as the distance information between the user terminal and the low.
In actual power utilization, the low-voltage distribution transformer is supplied with power in three phases (A phase, B phase and C phase), and the user terminal supplies power in a zero line and a live line mode, so that in order to further perfect the topological relation between the low-voltage distribution transformer and the user terminals in the low-voltage distribution area, the three-phase output ends of the low-voltage distribution transformer in the low-voltage distribution area can respectively send different carrier measurement signals to respectively obtain the user terminals connected with different phases. For example: taking nine users as an example, a is connected with a first user, a fourth user and a seventh user, B is connected with a second user, a fifth user and an eighth user, and C is connected with a third user, a sixth user and a ninth user. When the topological relation drawing of the topological relation of the low-voltage distribution area is confirmed, the connection structures can be respectively drawn for the three phases of the low-voltage distribution transformer, and the difficulty of drawing the topological structure is further simplified.
The method is characterized in that the distance information between the low-voltage distribution transformer and the user terminal in the low-voltage distribution area is calculated according to the condition that a three-phase output end of the low-voltage distribution transformer outputs a plurality of different carrier measurement signals, and the method can be realized through the following specific steps: the method comprises the steps that three-phase output ends (A phase, B phase and C phase) of a low-voltage distribution transformer driving a low-voltage distribution area respectively send a plurality of carrier measurement signals to a plurality of user terminals, each carrier measurement signal is different, the wavelength of each carrier measurement signal is determined, when the fact that the user terminals receive the plurality of carrier measurement signals is detected, the phase difference between the different carrier measurement signals is calculated for each user terminal, and distance information between the user terminals and the low-voltage distribution transformer is determined based on the phase difference and the wavelength.
And S104, acquiring the topological relation of the low-voltage transformer area by using the user terminal and the low-voltage distribution transformer as nodes and overlapping the position information and the distance information.
After the distance information between the low-voltage distribution transformer and the plurality of user terminals in the low-voltage distribution area and the position information of the user terminals in the low-voltage distribution area are successfully acquired, the user terminals and the low-voltage distribution transformer can be used as nodes, the position information and the distance information are superposed, and the topological relation of the low-voltage distribution area is acquired.
In practical engineering, because each user terminal has uniqueness, the specific drawing of the topological relation of the low-voltage distribution area can be completed based on a rough model of a user position coordinate graph only by calculating the distance from the output end of the low-voltage distribution transformer in the low-voltage distribution area to each user terminal and combining the user position coordinate graph formed by a plurality of user terminals in the low-voltage distribution area, so that the topological relation graph with sufficient geographic information characteristics is obtained. For example: taking two user terminals as an example, the actual distance between the first user terminal and the low-voltage distribution transformer in the low-voltage distribution area is 100 meters, and the distance information measured by the carrier measurement signal is also 100 meters, so that the first user terminal and the output end of the low-voltage distribution transformer in the low-voltage distribution area can be directly connected together; the actual distance between the second user terminal and the low-voltage distribution transformer in the low-voltage distribution area is also 100 meters, and the distance between the second user terminal and the first user terminal is 100 meters, but the distance measured by the carrier measurement signal is 200 meters, so that the second user terminal can be connected with the first user terminal. In some embodiments, there may be a situation where a certain user terminal satisfies multiple connection lines at the same time, and this user terminal may be marked and completed by manual review, but actually, because the user terminals are dispersed greatly, similar problems rarely occur.
In a specific implementation manner of this embodiment, a two-dimensional coordinate system may be established with a position of the low-voltage distribution transformer in the low-voltage transformer area as an origin, the position information is mapped in the two-dimensional coordinate system, a user terminal matched with the position information is determined as a node, and distance information corresponding to the node is used as a side length, and the origin and the node are connected to express a topological relation of the low-voltage transformer area.
Optionally, in this embodiment, as shown in fig. 2, a visualization system of a low-voltage distribution area may be constructed to manage a low-voltage distribution transformer and a plurality of user terminals in the low-voltage distribution area, a carrier signal transmitting device may be configured in the visualization system to control the low-voltage distribution transformer to transmit a carrier signal to the user terminals, a user location obtaining module set in the system may store location information of all the user terminals located in the low-voltage distribution area, and a monitoring processing station set in the system may be configured to detect whether the carrier signal is accurately transmitted to locations of the plurality of user terminals, and may also be configured to detect whether the user terminals receive the signal.
The embodiment of the invention can solve the problems that the low-voltage distribution area topological graph drawn in the prior art lacks geographic information characteristics and has poor practicability by acquiring the low-voltage distribution area zone area information and calculating the distance information of the low-voltage distribution transformer in the low-voltage distribution area zone area by establishing the relation between the low-voltage distribution area zone area and the geographic information system to determine the position information of the user terminal in the low-voltage distribution area zone area and calculating the distance information of the low-voltage distribution transformer in the low-voltage distribution area zone area to supply power to the user terminal through the low-voltage power transmission line when detecting that all the user terminals in the power supply range of the low-voltage distribution transformer receive the carrier detection signal, practical characteristics in the topological relation of the low-voltage transformer area are enriched on the basis of the position information and the distance information, the difficulty of topology drawing is simplified, and the accuracy of confirming the topological relation of the low-voltage transformer area is improved.
Example two
Fig. 3 is a schematic structural diagram of a device for determining a topological relation of a low-voltage distribution area according to a second embodiment of the present invention, where the device may specifically include the following modules:
the low-voltage distribution area acquisition module 301 is configured to acquire a low-voltage distribution area in the low-voltage power supply network when detecting that all user terminals within the power supply range of the low-voltage distribution transformer receive the carrier detection signal;
a location information obtaining module 302, configured to determine location information of a user terminal located in the low voltage distribution area by establishing a connection between the low voltage distribution area and a geographic information system;
the distance information calculation module 303 is configured to calculate distance information of a low-voltage distribution transformer in the low-voltage distribution area for supplying power to the user terminal through a low-voltage power transmission line;
a topological relation determining module 304, configured to obtain a topological relation of the low-voltage distribution area by using the user terminal and the low-voltage distribution transformer as nodes and superimposing the location information and the distance information.
In one embodiment of the present invention, the low-voltage platform acquisition module 301 includes:
an initial position determination submodule for determining an initial position of a low voltage distribution transformer in a low voltage supply network;
the carrier detection signal sending submodule is used for driving the low-voltage distribution transformer to send a carrier detection signal to the low-voltage power transmission line by taking the initial position as a center;
and the low-voltage distribution area confirmation submodule is used for taking the areas of all the user terminals in the low-voltage power supply network, which receive the carrier detection signals through the low-voltage power transmission line, as the low-voltage distribution areas matched with the low-voltage distribution transformer.
In an embodiment of the present invention, the location information obtaining module 302 includes:
the number inquiry submodule is used for inquiring the number of the low-voltage transformer area in a low-voltage power supply network;
the communication connection submodule is used for calling the communication equipment associated with the serial number to establish communication connection between the low-voltage transformer area and the geographic information system;
and the position information acquisition submodule is used for acquiring the position information of the user terminal positioned in the low-voltage distribution area from the geographic information system when the communication connection is successfully established.
In an embodiment of the present invention, the distance information calculating module 303 includes:
the carrier measurement signal sending submodule is used for driving a low-voltage distribution transformer in the low-voltage transformer area to send a carrier measurement signal to a user terminal through a low-voltage power transmission line;
and the distance information calculation submodule is used for calculating the distance information between the user terminal and the low-voltage distribution transformer based on the carrier measurement signal.
In one embodiment of the present invention, the distance information calculation sub-module includes:
the clock synchronization unit is used for performing clock synchronization operation on the low-voltage distribution transformer and the user terminal;
the time recording unit is used for respectively recording a first time when the low-voltage distribution transformer sends the carrier measurement signal and a second time when the carrier measurement signal reaches the user terminal if the clock synchronization operation is executed;
and the distance information determining unit is used for calculating the distance information between the user terminal and the low-voltage distribution transformer based on the first time and the second time.
In one embodiment of the present invention, the distance information determining unit includes:
a time difference determining subunit configured to calculate a time difference between the first time and the second time;
a transmission rate determining subunit, configured to determine a transmission rate of the carrier measurement signal on a low-voltage power transmission line in the low-voltage transformer area;
and the distance information determining subunit is used for taking the product of the time difference and the transmission rate as the distance information between the user terminal and the low-voltage distribution transformer.
In an embodiment of the present invention, the topological relation determining module 304 includes:
the coordinate system establishing submodule is used for establishing a two-dimensional coordinate system by taking the position of the low-voltage distribution transformer in the low-voltage transformer area as an origin;
a mapping submodule for mapping the position information in the two-dimensional coordinate system;
the node determining submodule is used for determining the user terminal matched with the position information in the two-dimensional coordinate system as a node;
and the topological relation expression submodule is used for connecting the origin and the node by taking the distance information corresponding to the node as the side length so as to express the topological relation of the low-voltage transformer area.
The device for determining the topological relation of the low-voltage transformer area, provided by the embodiment of the invention, can execute the method for determining the topological relation of the low-voltage transformer area, provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
EXAMPLE III
Fig. 4 is a schematic structural diagram of a computer device according to a third embodiment of the present invention, as shown in fig. 4, the computer device includes a processor 400, a memory 401, a communication module 402, an input device 403, and an output device 404; the number of processors 400 in the computer device may be one or more, and one processor 400 is taken as an example in fig. 4; the processor 400, the memory 401, the communication module 402, the input device 403 and the output device 404 in the computer apparatus may be connected by a bus or other means, and fig. 4 illustrates an example of connection by a bus.
The memory 401 is used as a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, and modules, such as modules corresponding to the low-voltage-station-area topological relation determination method in the embodiment of the present invention (for example, the low-voltage-station-area acquisition module 301, the location information acquisition module 302, the distance information calculation module 303, and the topological relation determination module 304 in the low-voltage-station-area topological relation determination apparatus shown in fig. 3). The processor 400 executes various functional applications and data processing of the computer device by running software programs, instructions and modules stored in the memory 401, that is, the determination method of the low-voltage station zone topological relation is realized.
The memory 401 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 401 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, memory 401 may further include memory located remotely from processor 400, which may be connected to a computer device through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
And the communication module 402 is used for establishing connection with the display screen and realizing data interaction with the display screen.
The input device 403 may be used to receive input numeric or character information and generate key signal inputs related to user terminal settings and function control of the computer apparatus.
The output device 404 may include a display device such as a display screen.
It should be noted that the specific composition of the input device 403 and the output device 404 can be set according to actual situations.
The computer device provided by the embodiment of the present invention can execute the method for determining the topological relation of the low-voltage distribution area provided by any embodiment of the present invention, and has corresponding functions and advantageous effects.
Example four
The fourth embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for determining the low-voltage transformer area topological relation according to any one of the above embodiments.
The method for determining the topological relation of the low-voltage transformer area comprises the following steps:
when detecting that all user terminals in the power supply range of the low-voltage distribution transformer receive carrier detection signals, acquiring a low-voltage distribution area in a low-voltage power supply network;
determining location information of a user terminal located in the low-voltage transformer area by establishing a connection between the low-voltage transformer area and a geographic information system;
calculating distance information of a low-voltage distribution transformer in the low-voltage transformer area for supplying power to a user terminal through a low-voltage power transmission line;
and overlapping the position information and the distance information by using the user terminal and the low-voltage distribution transformer as nodes to obtain the topological relation of the low-voltage distribution area.
Of course, the computer readable storage medium provided in the embodiments of the present invention, the computer program thereof is not limited to the method operations described above, and may also perform related operations in the method for determining a low-voltage station zone topological relation provided in any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the device for determining a topological relation of a low-voltage distribution area, each included unit and module are only divided according to functional logic, but are not limited to the above division, as long as corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for determining a topological relation of a low-voltage station area is characterized by comprising the following steps:
when detecting that all user terminals in the power supply range of the low-voltage distribution transformer receive carrier detection signals, acquiring a low-voltage distribution area in a low-voltage power supply network;
determining location information of a user terminal located in the low-voltage transformer area by establishing a connection between the low-voltage transformer area and a geographic information system;
calculating distance information of a low-voltage distribution transformer in the low-voltage transformer area for supplying power to a user terminal through a low-voltage power transmission line;
and overlapping the position information and the distance information by using the user terminal and the low-voltage distribution transformer as nodes to obtain the topological relation of the low-voltage distribution area.
2. The method of claim 1, wherein acquiring low voltage stations in a low voltage power supply network upon detecting that all user terminals within a supply range of a low voltage distribution transformer have received a carrier detect signal comprises:
determining an initial position of a low voltage distribution transformer in a low voltage supply network;
taking the initial position as a center, driving the low-voltage distribution transformer to send a carrier detection signal to a low-voltage power transmission line;
and taking the area where all the user terminals receiving the carrier detection signal through the low-voltage power transmission line in the low-voltage power supply network are as a low-voltage distribution area matched with the low-voltage distribution transformer.
3. The method of claim 1, wherein determining location information of the user terminal located in the low voltage station area by establishing a connection between the low voltage station area and a geographic information system comprises:
inquiring the number of the low-voltage transformer area in a low-voltage power supply network;
calling communication equipment associated with the serial number to establish communication connection between the low-voltage transformer area and a geographic information system;
and when the communication connection is successfully established, acquiring the position information of the user terminal in the low-voltage distribution area from the geographic information system.
4. The method of any of claims 1-3, wherein the calculating distance information for the low voltage distribution transformer in the low voltage area to power the user terminal via the low voltage power transmission line comprises:
driving a low-voltage distribution transformer in the low-voltage transformer area to send a carrier measurement signal to a user terminal through a low-voltage power transmission line;
and calculating distance information between the user terminal and the low-voltage distribution transformer based on the carrier measurement signal.
5. The method of claim 4, wherein said calculating distance information between said user terminal and said low voltage distribution transformer based on said carrier measurement signal comprises:
performing clock synchronization operation on the low-voltage distribution transformer and the user terminal;
if the clock synchronization operation is finished, respectively recording a first time when the low-voltage distribution transformer sends the carrier measurement signal and a second time when the carrier measurement signal reaches the user terminal;
and calculating distance information between the user terminal and the low-voltage distribution transformer based on the first time and the second time.
6. The method of claim 5, wherein calculating distance information between the user terminal and the low voltage distribution transformer based on the first time and the second time comprises:
calculating a time difference between the first time and the second time;
determining a transmission rate of the carrier measurement signal on a low-voltage power transmission line in the low-voltage transformer area;
and taking the product of the time difference and the transmission rate as the distance information between the user terminal and the low-voltage distribution transformer.
7. The method according to claim 1, 2, 3, 5 or 6, wherein the obtaining the topological relation of the low-voltage transformer area by using the user terminal and the low-voltage distribution transformer as nodes and overlapping the position information and the distance information comprises:
establishing a two-dimensional coordinate system by taking the position of the low-voltage distribution transformer in the low-voltage transformer area as an origin;
mapping the position information in the two-dimensional coordinate system;
determining the user terminal matched with the position information as a node in the two-dimensional coordinate system;
and connecting the origin and the node by using the distance information corresponding to the node as side length so as to express the topological relation of the low-voltage transformer area.
8. An apparatus for determining a topological relation of a low-voltage station area, comprising:
the low-voltage distribution area acquisition module is used for acquiring a low-voltage distribution area in a low-voltage power supply network when detecting that all user terminals in the power supply range of the low-voltage distribution transformer receive carrier detection signals;
the position information acquisition module is used for determining the position information of the user terminal in the low-voltage distribution area by establishing the relation between the low-voltage distribution area and a geographic information system;
the distance information calculation module is used for calculating the distance information of the low-voltage distribution transformer in the low-voltage transformer area for supplying power to the user terminal through a low-voltage power transmission line;
and the topological relation determining module is used for superposing the position information and the distance information by taking the user terminal and the low-voltage distribution transformer as nodes to obtain the topological relation of the low-voltage distribution area.
9. A computer device, characterized in that the computer device comprises:
one or more processors;
a memory for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement a method of determining low-pressure-station-zone topology relationships as recited in any of claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the method for determining a low-voltage station zone topological relation according to any one of claims 1 to 7.
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