CN111783266B - Distributed mapping system and method for single line diagram of power distribution network - Google Patents
Distributed mapping system and method for single line diagram of power distribution network Download PDFInfo
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Abstract
The invention discloses a distributed mapping system and a method for a single line diagram of a power distribution network, wherein equipment information and topology relation information of each section of power distribution line of the power distribution network are obtained through a distributed mapping idea; forming a topology model file of the distribution line corresponding to the equipment information and the topology relation; integrating the topology model files of all the sections of distribution lines into a topology model file of the distribution network; and converting the topology model file of the power distribution network into a single line diagram of the power distribution network. The topology description is carried out at the source end of the line, the data source is real and reliable, the line topology description can be ensured to be consistent with the real line, the original imaging full-network data processing and calculating pressure is lightened, and the high-efficiency generation or updating of the distribution single line diagram is facilitated.
Description
Technical Field
The invention relates to the technical field of single-line diagram imaging of power distribution networks, in particular to a distributed imaging system and a distributed imaging method of the single-line diagram of the power distribution networks.
Background
With the continuous improvement of the requirements of power distribution network power users on the safety and reliability of power supply, the power distribution network is rapidly expanded. The grid structure of the whole power distribution network is gradually complicated, the equipment scale is gradually increased year by year, and grid adjustment and equipment fluctuation are quite frequent. At present, a single line diagram of a 10kV power distribution network is generated, which mainly comprises the steps that mapping equipment acquires all equipment information and topology relation information on the whole power distribution network from a power management system (PMS system for short) of a provincial power grid, then a topology model of the whole power distribution network is generated according to all the equipment information and the topology relation information on the whole power distribution network, and further the topology model of the whole power distribution network is converted into the single line diagram of the whole power distribution network.
Disclosure of Invention
The invention provides a distributed mapping system and a distributed mapping method for a single line diagram of a power distribution network, which are used for solving the technical problems of high error rate and low calculation speed of the existing mapping method for the single line diagram of the power distribution network.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a distributed mapping system for a single line diagram of a power distribution network, comprising: the system comprises a plurality of input assemblies respectively arranged at each section of distribution line of the distribution network and a mapping assembly connected with the input assemblies;
the input assembly: the device information and the topology relation information are used for inputting the corresponding distribution lines, a topology model file of the distribution lines corresponding to the device information and the topology relation is formed according to the device information and the topology relation, and then the topology model file is sent to the mapping component;
the imaging component: the topology model file of each section of distribution line sent by each input assembly is received, and the topology model files of each section of distribution line are integrated into a topology model file of the distribution network, so that the topology model file of the distribution network is converted into a single line diagram of the distribution network.
Preferably, the input component is used for inputting the equipment information and the topology relation information of the power distribution line according to the identification information on each equipment nameplate and the actual connection relation between each equipment after the user performs on-site investigation on the power distribution line, and further forming a topology model file of the power distribution line corresponding to the equipment information and the topology relation.
Preferably, the imaging component comprises a model processing module and a graph-to-model conversion module, and the model processing module is respectively connected with the plurality of input components and the graph-to-model conversion module; the model processing module is used for receiving the topology model files of the power distribution lines sent by each input assembly, integrating the topology model files of the power distribution lines into the topology model files of the power distribution network, and further transmitting the topology model files of the power distribution network to the graph-model conversion module; the image-to-model conversion module is used for receiving and converting the topology model file of the power distribution network into a single line diagram of the power distribution network.
Preferably, the input assembly is connected with a distribution terminal of a distribution line corresponding to the input assembly, the model processing module is connected with the distribution master station, and the input assembly is used for sending the topology model file of the distribution line to the model processing module through a communication line between the distribution terminal and the distribution master station.
Preferably, the model processing module is configured to parse topology model files of each section of distribution line sent by each input component, group the topology model files of each section of distribution line by taking a single distribution line as a unit, and combine all the segmented topology model files into a topology model file of the whole distribution network.
Preferably, the graph-to-analog conversion module is used for acquiring layout information of each station room and topology connection information of cables and wires between stations from a topology model file of the power distribution network, and generating a wiring diagram between each station room in the power distribution network by adopting a DAG (DirectedAcyclic Graph ) hierarchical layout algorithm; calculating an outsourcing matrix of each station room in the wiring diagram, and calculating the sequence numbers of the head and tail end points of the cables or wires according to the intervals of upstream and downstream station rooms in topological connection of the cables and wires; determining initial station room coordinates of a wiring diagram, and determining layout positions of each station room in a single line diagram based on an azimuth collision detection algorithm according to layout directions of the wiring diagram and an outsourcing matrix of each station room in the wiring diagram; and completing the layout position of the cable or wire between each station building in the single line diagram according to the serial numbers of the head and tail end points of the cable or wire based on Dijkstra (Dijkstra) shortest path algorithm.
A distributed mapping method of a single line diagram of a power distribution network comprises the following steps:
acquiring equipment information and topology relation information of each section of distribution line of a distribution network;
forming a topology model file of the distribution line corresponding to the equipment information and the topology relation;
integrating the topology model files of all the sections of distribution lines into a topology model file of the distribution network;
and converting the topology model file of the power distribution network into a single line diagram of the power distribution network.
Preferably, the method for acquiring the equipment information and the topology relation information of each section of distribution line of the distribution network specifically comprises the following steps:
after the user performs on-site investigation on the distribution line, the equipment information and the topological relation information of the section of distribution line are obtained according to the identification information on the equipment nameplate and the actual connection relation between the equipment.
Preferably, the topology model file of the power distribution network is converted into a single line diagram of the power distribution network, and the method specifically comprises the following steps:
obtaining layout information of each station room and topology connection information of cables and wires between stations from a topology model file of the power distribution network, and generating a wiring diagram between each station room in the power distribution network by adopting a DAG hierarchical layout algorithm;
determining initial station room coordinates of a wiring diagram, and determining layout positions of each station room in a single line diagram based on an azimuth collision detection algorithm according to layout directions of the wiring diagram and an outsourcing matrix of each station room in the wiring diagram;
and completing the layout positions of the cables or wires between each station building in the single line diagram according to the serial numbers of the head and tail end points of the cables or wires based on Dijkstra shortest path algorithm.
The invention has the following beneficial effects:
1. according to the distributed mapping system and method for the single line diagram of the power distribution network, equipment information and topology relation information of each section of power distribution line of the power distribution network are obtained through a distributed mapping idea; forming a topology model file of the distribution line corresponding to the equipment information and the topology relation; integrating the topology model files of all the sections of distribution lines into a topology model file of the distribution network; and converting the topology model file of the power distribution network into a single line diagram of the power distribution network. The topology description is carried out at the source end of the line, the data source is real and reliable, and the consistency of the line topology description and the real line can be ensured. The method reduces the pressure of original imaging whole network data processing and calculation, and is beneficial to efficiently generating or updating the distribution single line diagram.
In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The invention will be described in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of a distributed mapping system for a single line diagram of a power distribution network in accordance with the present invention;
FIG. 2 is a schematic diagram of a distributed diagrammatical system of a single line diagram of a power distribution network in a preferred embodiment of the present invention;
FIG. 3 is a workflow diagram of a distributed diagramming system of a single line diagram of a power distribution network in a preferred embodiment of the present invention;
Detailed Description
Embodiments of the invention are described in detail below with reference to the attached drawings, but the invention can be implemented in a number of different ways, which are defined and covered by the claims.
Embodiment one:
as shown in fig. 1, the present invention discloses a distributed mapping system for a single line diagram of a power distribution network, which includes: the system comprises a plurality of input assemblies respectively arranged at each section of distribution line of the distribution network and a mapping assembly connected with the input assemblies;
the input assembly: the device information and the topology relation information are used for inputting the corresponding distribution lines, a topology model file of the distribution lines corresponding to the device information and the topology relation is formed according to the device information and the topology relation, and then the topology model file is sent to the mapping component;
the imaging component: the topology model file of each section of distribution line sent by each input assembly is received, and the topology model files of each section of distribution line are integrated into a topology model file of the distribution network, so that the topology model file of the distribution network is converted into a single line diagram of the distribution network.
In addition, in the embodiment, the invention also discloses a distributed mapping method of the single line diagram of the power distribution network, which comprises the following steps:
acquiring equipment information and topology relation information of each section of distribution line of a distribution network;
forming a topology model file of the distribution line corresponding to the equipment information and the topology relation;
integrating the topology model files of all the sections of distribution lines into a topology model file of the distribution network;
and converting the topology model file of the power distribution network into a single line diagram of the power distribution network.
According to the distributed mapping system and method for the single line diagram of the power distribution network, equipment information and topology relation information of each section of power distribution line of the power distribution network are obtained through a distributed mapping idea; forming a topology model file of the distribution line corresponding to the equipment information and the topology relation; integrating the topology model files of all the sections of distribution lines into a topology model file of the distribution network; and converting the topology model file of the power distribution network into a single line diagram of the power distribution network. The topology description is carried out at the source end of the line, the data source is real and reliable, and the consistency of the line topology description and the real line can be ensured. The method reduces the pressure of original imaging whole network data processing and calculation, and is beneficial to efficiently generating or updating the distribution single line diagram.
Embodiment two:
the second embodiment is an extended embodiment of the embodiments, and is different from the first embodiment in that the structure and the function of the distributed mapping system of the single line diagram of the power distribution network are extended, and specific steps of the distributed mapping method of the single line diagram of the power distribution network are refined:
in this embodiment, the input component is configured to input, after a user performs on-site investigation on a distribution line, device information and topology relationship information of the section of distribution line according to identification information on each device nameplate and an actual connection relationship between each device, and further form a topology model file of the distribution line corresponding to the device information and the topology relationship. Specifically, the input component is a portable PC (Personal Computer, microcomputer), the portable PC is preset with a graphical line topology information input tool and a topology generation program, after a user surveys a distribution line on site, according to identification information on each equipment nameplate and actual connection relations between each equipment, equipment information and topology relation information of the section of distribution line are input into the portable PC through custom-developed line topology information input tool software, and the portable PC is controlled to call a preset topology generation program to form a topology model file of the distribution line corresponding to the equipment information and the topology relation. The device information and the topology relation information comprise line information (line name, voltage level and the like), device information (device type, manufacturer, rated voltage, rated current and the like), device affiliation, line upstream and downstream connection relationship and the like.
In this embodiment, the imaging component includes a model processing module and a graph-to-model conversion module, where the model processing module is connected to the plurality of input components and the graph-to-model conversion module respectively; the model processing module is used for receiving the topology model files of the power distribution lines sent by each input assembly, integrating the topology model files of the power distribution lines into the topology model files of the power distribution network, and further transmitting the topology model files of the power distribution network to the graph-model conversion module; the image-to-model conversion module is used for receiving and converting the topology model file of the power distribution network into a single line diagram of the power distribution network.
Specifically, the model processing module is configured to analyze the topology model files of each section of distribution line sent by each input component, and group the topology model files of each section of distribution line with a single distribution line as a unit, so as to form a topology model file of the distribution network, in this embodiment, preferably, a single 10kv distribution line is grouped with a unit, where the 10kv distribution line refers to a distribution line formed by all conductive devices from a 10kv outlet switch of the transformer substation to the terminal of the distribution transformer.
In this embodiment, the model processing module parses the obtained topology model files in XML format one by using DOM4J (an open source XML (Extensible Markup Language, extensible markup language) parsing package for reading and writing XML files).
The image-to-model conversion module is used for acquiring layout information of each station room and topology connection information of cables and wires between stations from a topology model file of the power distribution network, and generating a wiring diagram among each station room (namely a transformer substation or a ring main unit) in the power distribution network by adopting a DAG hierarchical layout algorithm; the method specifically comprises the following steps of:
(1) The method comprises the steps of obtaining a layout layer 0, namely a bus layer of a power distribution network, calculating a horizontal space occupied by buses according to the number of buses of a topology model file of the power distribution network and the number of intervals contained under each section of bus, and forming a layer 0 node;
(2) The method comprises the steps of obtaining a layer 1 of layout, namely equipment directly connected with a bus, determining the size and the direction of equipment layout according to the type of topology model file equipment of a power distribution network, wherein if the equipment is a breaker or a load switch, the layout direction is perpendicular to the bus, and if the equipment is a grounding disconnecting link, the layout direction is parallel to the bus, so that a layer 1 node is formed;
(3) Acquiring an N layer node which is equipment connected with the previous layer, wherein the steps are the same as the step (2) until all the equipment in the station room is layered completely;
(4) The layout in the station house generally adopts an orthogonal mode, so that interlayer wiring firstly adopts Dijkstra shortest path algorithm, and the orthogonal mode is connected with equipment between different layers to ensure no cross;
(5) And finishing the layout of the station building wiring diagram.
Calculating an outsourcing matrix of each station room in the wiring diagram, and calculating the sequence numbers of the head and tail end points of the cables or wires according to the intervals of upstream and downstream station rooms in topological connection of the cables and wires; determining the coordinates of an initial station room of a wiring diagram, and determining the layout position of each station room in a single line diagram based on an azimuth collision detection algorithm according to the layout direction of the wiring diagram and the outsourcing matrix of each station room in the wiring diagram; and completing the layout positions of the cables or wires between each station building in the single line diagram according to the serial numbers of the head and tail end points of the cables or wires based on Dijkstra shortest path algorithm.
The method is characterized by comprising the following steps of:
(1) Determining coordinates of a starting station room;
(2) Calculating an example L of a central coordinate and an upper coordinate of the layout of the next-stage station room according to the layout direction and the rectangular size of the outer bag of the next-stage station room of the station room, wherein the coordinate calculation adopts an azimuth collision detection algorithm, generally adopts four-azimuth collision detection, the detection sequence is clockwise priority according to the layout direction, if no cross collision with other graphics is detected, the layout position is available, otherwise, the position is rotated clockwise by 90 degrees, and the collision detection of the next position is carried out;
(3) If the four-direction collision detection is not passed, extending L to be 1.5 times of the initial length, and re-detecting until the detection is passed, and finding a proper layout position;
(4) Carrying out orthogonal layout based on Dijkstra shortest path algorithm on cables or wires between upper and lower stages, wherein the layout algorithm is the same as the layout algorithm between the inner layers of the station rooms, and completing layout of connecting cables or wires between upper and lower stages of station rooms;
(5) Obtaining a next-stage station room node of the directed graph, and repeating the step (2) for layout;
(6) And (3) until all node layouts in the directed graph are completed, forming a completed distribution network single line graph, and deriving and generating a single line graph SVG (Scalable Vector Graphics ) file.
In a preferred scheme, as shown in fig. 2, the input component is connected with a distribution terminal of a distribution line corresponding to the input component, the model processing module is connected with the distribution master station, and the input component is used for sending the topology model file of the distribution line to the model processing module through a communication line between the distribution terminal and the distribution master station. The power distribution terminal is used for storing topology model files of all sections of lines in a distributed mode; the power distribution main station is used for acquiring and storing topology model files of each section of line;
in this embodiment, the workflow of the distributed mapping system of the single line diagram of the power distribution network is shown in fig. 3, and includes the following steps:
1. after the installation of a section of line equipment is finished, a graphical line topology information input tool is used for inputting the information of the section of line on a PC, the topology model file of the section of line is manufactured, and the information content comprises line information (line name, voltage level and the like), equipment information (equipment type, manufacturer, rated voltage, rated current and the like), inter-equipment affiliation, line upstream and downstream connection relationship and the like, so that the topology model file of the section of line is formed. The topology model is defined in extensible markup language of the XML1.0 specification.
2. After the model file is manufactured, the topology model file of the section of line is issued to the power distribution terminal of the section of line for storage.
3. And after receiving the topology model file, the distribution terminal provides the distribution master station topology model file acquisition channel at the IEC104 protocol business layer meeting the DL/T634.5104-2009 standard.
4. The distribution master station obtains topology model files of each section of line from a plurality of distribution terminals through file service of IEC104 and stores the topology model files in the distribution master station.
5. The model processing module acquires topology model files of all sections of lines stored in the power distribution main station, and the module obtains equipment connection topology relations of the whole power distribution network through line topology description in all the files to generate a topology model of the whole power distribution network.
6. And the graph-to-model conversion module converts the model file into a distribution network single line diagram in an SVG format conforming to the national standard according to a preset conversion rule.
In summary, according to the distributed mapping system and method for the single line diagram of the power distribution network, equipment information and topology relation information of each section of power distribution line of the power distribution network are obtained through a distributed mapping idea; forming a topology model file of the distribution line corresponding to the equipment information and the topology relation; integrating the topology model files of all the sections of distribution lines into a topology model file of the distribution network; and converting the topology model file of the power distribution network into a single line diagram of the power distribution network. The topology description is carried out at the source end of the line, the data source is real and reliable, and the consistency of the line topology description and the real line can be ensured. The method reduces the pressure of original imaging whole network data processing and calculation, and is beneficial to efficiently generating or updating the distribution single line diagram.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A distributed mapping system for a single line diagram of a power distribution network, comprising: the system comprises a plurality of input assemblies respectively arranged at each section of distribution line of the distribution network and a mapping assembly connected with the input assemblies;
the input assembly: the device information and the topology relation information are used for inputting the corresponding distribution lines, forming a topology model file of the distribution lines corresponding to the device information and the topology relation information according to the device information and the topology relation information, and sending the topology model file to the mapping component;
the imaging component: the topology model file of each section of distribution line is integrated into a topology model file of the distribution network, and then the topology model file of the distribution network is converted into a single line diagram of the distribution network;
the imaging component comprises a model processing module and a graph-model conversion module, and the model processing module is respectively connected with the plurality of input components and the graph-model conversion module; the model processing module is used for receiving the topology model files of the power distribution lines sent by each input assembly, integrating the topology model files of the power distribution lines into the topology model files of the power distribution network, and further transmitting the topology model files of the power distribution network to the graph-model conversion module; the image-model conversion module is used for receiving and converting the topology model file of the power distribution network into a single line diagram of the power distribution network;
the graph-model conversion module is used for acquiring layout information of each station room and topology connection information of cables and wires between stations from a topology model file of the power distribution network, and generating a wiring graph among each station room in the power distribution network by adopting a DAG hierarchical layout algorithm; calculating an outsourcing matrix of each station room in the wiring diagram, and calculating the sequence numbers of the head and tail end points of the cables or wires according to the intervals of upstream and downstream station rooms in topological connection of the cables and wires; determining initial station room coordinates of a wiring diagram, and determining layout positions of each station room in a single line diagram based on an azimuth collision detection algorithm according to layout directions of the wiring diagram and an outsourcing matrix of each station room in the wiring diagram; based on Dijkstra shortest path algorithm, completing layout positions of cables or wires among all station rooms in a single line diagram according to serial numbers of head and tail points of the cables or wires;
the method is characterized by comprising the following steps of:
(1) Determining coordinates of a starting station room;
(2) Calculating an example L of a central coordinate and an upper coordinate of the layout of the next-stage station room according to the layout direction and the rectangular size of the outer package of the next-stage station room of the station room, wherein the coordinate calculation adopts a four-azimuth collision detection algorithm, the detection sequence is clockwise priority according to the layout direction, if no cross collision with other graphics is detected, the layout position is available, otherwise, the layout position is rotated clockwise by 90 degrees, and the collision detection of the next position is carried out;
(3) If the four-direction collision detection is not passed, extending L to be 1.5 times of the initial length, and re-detecting until the detection is passed, and finding a proper layout position;
(4) Carrying out orthogonal layout based on Dijkstra shortest path algorithm on cables or wires between upper and lower stages, wherein the layout algorithm is the same as the layout algorithm between the inner layers of the station rooms, and completing layout of connecting cables or wires between upper and lower stages of station rooms;
(5) Obtaining a next-stage station room node of the directed graph, and repeating the step (2) for layout;
(6) And forming a completed distribution network single line diagram until all nodes in the directed graph are laid out, and exporting and generating a single line diagram SVG file.
2. The system according to claim 1, wherein the input component is configured to input, after a user performs an on-site investigation on a power distribution line, device information and topology relationship information of the power distribution line according to identification information on each device nameplate and an actual connection relationship between each device, and form a topology model file of the power distribution line corresponding to the device information and the topology relationship.
3. The system of claim 1, wherein the input component is connected to a distribution terminal of a distribution line corresponding to the input component, the model processing module is connected to a distribution master station, and the input component is configured to send the topology model file of the distribution line to the model processing module through a communication line between the distribution terminal and the distribution master station.
4. A distributed mapping system for a single line diagram of a power distribution network according to claim 3, wherein the model processing module is configured to parse topology model files of each section of power distribution line sent by each input component, group the topology model files of each section of power distribution line by taking a single power distribution line as a unit, and combine all the segmented topology model files into a topology model file of the whole power distribution network.
5. The distributed mapping method for the single line diagram of the power distribution network is characterized by comprising the following steps of:
acquiring equipment information and topology relation information of each section of distribution line of a distribution network;
forming a topology model file of the distribution line corresponding to the equipment information and the topology relation;
integrating the topology model files of all the sections of distribution lines into a topology model file of the distribution network;
converting the topology model file of the power distribution network into a single line diagram of the power distribution network;
converting a topology model file of a power distribution network into a single line diagram of the power distribution network, and specifically comprising the following steps:
obtaining layout information of each station room and topology connection information of cables and wires between stations from a topology model file of the power distribution network, and generating a wiring diagram between each station room in the power distribution network by adopting a DAG hierarchical layout algorithm;
determining initial station room coordinates of a wiring diagram, and determining layout positions of each station room in a single line diagram based on an azimuth collision detection algorithm according to layout directions of the wiring diagram and an outsourcing matrix of each station room in the wiring diagram;
based on Dijkstra shortest path algorithm, completing layout positions of cables or wires among all station rooms in a single line diagram according to serial numbers of head and tail points of the cables or wires;
the method is characterized by comprising the following steps of:
(1) Determining coordinates of a starting station room;
(2) Calculating an example L of a central coordinate and an upper coordinate of the layout of the next-stage station room according to the layout direction and the rectangular size of the outer package of the next-stage station room of the station room, wherein the coordinate calculation adopts a four-azimuth collision detection algorithm, the detection sequence is clockwise priority according to the layout direction, if no cross collision with other graphics is detected, the layout position is available, otherwise, the layout position is rotated clockwise by 90 degrees, and the collision detection of the next position is carried out;
(3) If the four-direction collision detection is not passed, extending L to be 1.5 times of the initial length, and re-detecting until the detection is passed, and finding a proper layout position;
(4) Carrying out orthogonal layout based on Dijkstra shortest path algorithm on cables or wires between upper and lower stages, wherein the layout algorithm is the same as the layout algorithm between the inner layers of the station rooms, and completing layout of connecting cables or wires between upper and lower stages of station rooms;
(5) Obtaining a next-stage station room node of the directed graph, and repeating the step (2) for layout;
(6) And forming a completed distribution network single line diagram until all nodes in the directed graph are laid out, and exporting and generating a single line diagram SVG file.
6. The method for distributed mapping of single line diagrams of power distribution networks according to claim 5, wherein the method for distributed mapping of single line diagrams of power distribution networks comprises the following steps:
after the user performs on-site investigation on the distribution line, the equipment information and the topological relation information of the section of distribution line are obtained according to the identification information on the equipment nameplate and the actual connection relation between the equipment.
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