114 results about "One-line diagram" patented technology

The invention relates to an automatic power distribution network single line diagram drawing method based on an improved gravitation repulsion model and belongs to the technical field of electric power system dispatching automation. According to the method, firstly, all devices and connection relations which belong to one feeder line are read from a power grid public information model; all the read devices are abstracted into nodes, the connection relations between the devices are abstracted into lines, and a foundation network structure chart is completed; then, the device nodes are replaced with 8-node rectangular frames, and layout adjustment is performed on the structure chart by using the improved gravitation repulsion model; a final layout is generated through orthogonalization, intersection removal and connecting line contraction; finally, information including node positions, device types, device names and electrical attributes of the devices in the final layout are output to a single line diagram file, device diagrams replace the 8-node rectangular frames, and drawing of a power distribution network single line diagram is completed. The single line diagram drawn with the method has attractive and compact layout and lines do not intersect and overlap.

The invention discloses an automatic distribution network diagram to single line diagram conversion method based on AutoCAD. Particularly, in automatic large-medium distribution conversion systems, an AutoCAD diagram designed by a distribution designer is automatically converted into a scheduling single diagram and a system diagram which are used by a dispatcher in an automatic distribution system by adopting layered conversion and layered display methods, different kinds of information of a background layer, an equipment layer and an equipment labeling layer is selectively converted and displayed according to the dispatching, operating and maintenance requirements, and a diagram topologic connection relation is automatically generated. By adopting the method, the efficiency of the automatic distribution system in project implementation and system secondary maintenance can be greatly improved, the workload of a single line diagram maintainer is greatly reduced, and a powerful technical support is provided for the distribution project implementation, dispatching, operating and maintenance.

The invention relates to a method for automatically drawing a single line diagram of a multi-intelligent distribution system, in particular to a method for automatically drawing a single line diagrambased on a triple tree and a collision avoidance algorithm, belonging to the field of power system dispatching automation. The advantage of this method is that it can be used to draw single-line diagrams for different distribution systems of different suppliers. Single Line Diagram (SLD) is an important method of power system visualization, which can be used to control and monitor the fault location, identification, separation and service recovery of distribution system. First, the distribution system diagram is converted to a standard grid common information model CIM at the client, and thensent to the server. At the server side, a single line graph is drawn by using the method of automatically draw a single line graph, and finally, the single line graph is sent back to the client side,and is verified by the client side.

The invention discloses an automatic generation method and system for a power distribution single line diagram and an automatic modification method. The automatic generation method comprises the following steps of S1, determining a reference node O of the power distribution single line diagram; calculating and determining grid coordinates of all single line diagram nodes according to the referencenode O of the power distribution single line diagram; then, drawing a connecting line between single line diagram nodes to obtain an initial power distribution single line diagram; S2, performing graph optimization on the initial distribution single line diagram according to the objective function F to obtain a secondary distribution single line diagram; and S3, replacing all single-line diagramnodes of the secondary power distribution single-line diagram with corresponding symbols to obtain a final power distribution single-line diagram. The automatic generation method and system of the power distribution single line diagram and the automatic modification method are ingenious in design and high in practicability.

The invention discloses a distributed mapping system and method for a single line diagram of a power distribution network, and the method comprises the steps: obtaining the equipment information and topological relation information of each section of power distribution line of the power distribution network through a distributed mapping idea; forming a topological model file of the distribution line corresponding to the equipment information according to the equipment information and the topological relation; integrating the topological model files of each section of distribution line into a topological model file of the distribution network; and converting the topological model file of the power distribution network into a single line diagram of the power distribution network. Topology description is carried out at the source end of the line, the data source is real and reliable, it can be ensured that line topology description is consistent with a real line, the original mapping whole-network data processing and calculation pressure is relieved, and a power distribution single-line diagram can be generated or updated efficiently.

The invention provides an intelligent identification method for erecting a distribution network line on the same tower. The method comprises: extracting a circuit diagram model file from a GIS systemfor analysis; screening data, extracting a single-line diagram which is still in use at present, removing all single-line diagrams which are archived and are not published to form an effective GIS diagram model database, and analyzing a hierarchical relationship between a main line and branch lines in a feeder line according to a topological relationship to form a line topological relationship table; and performing key information extraction on the line affiliation obtained through topology analysis and the output data file. According to the method, the identification capability of equipment erected on the same tower is presented in a normal operation mode of a distribution network line, and the method has the characteristics of high accuracy, strong effectiveness, high reliability and thelike.

The invention discloses a power distribution network single-line diagram generation method and device and a storage medium. The method comprises the steps: generating a trunk line and branch lines thereof according to a tree structure of a power distribution network single-line diagram; determining layout directions of all branch lines according to a trunk line layout direction input by a user; determining a trunk line head node coordinate, and finishing trunk line residual node layout in combination with a trunk line layout direction; determining branch line head node coordinates according to the father branch of the branch line, and completing branch line remaining node layout in combination with the branch line layout direction; node overlapping detection is carried out on the arranged nodes, and node overlapping is eliminated in a local stretching mode; performing local contraction on all nodes on the trunk line and the branch lines according to the sequence from the tail node to the head node; and carrying out wiring on each to-be-wired terminal of the arranged node. The power distribution network single-line diagram generation efficiency and accuracy can be remarkably improved, and compactness and attractiveness of the single-line diagram are guaranteed.

The invention discloses a low-voltage distribution network three-phase single-line diagram initial layout automatic generation method. According to the topological relation of single feeders of the low-voltage three-phase power distribution network and equivalent single-phase loads of load nodes, the sector layout of a, b and c according to 120 degrees is calculated, and finally a three-phase power distribution network single-feeder single-line diagram which is uniformly arranged in a plane is formed. According to the method, wiring of the low-voltage power distribution network wiring diagramcan be carried out on one plane, coordinates of all nodes are automatically calculated, line segments are drawn according to the connection relation between the nodes, line segment intersection can beavoided through selection of the coefficient l, and finally the low-voltage power distribution network split-phase wiring diagram which is uniform in distribution and free of intersection is formed.An excellent initial single-line diagram is provided for the next step of diagram optimization calculation, the method can also be directly used for the final diagram of the low-voltage power distribution network wiring diagram, rendering of various themes is performed on the single-line diagram based on intelligent electric meter measurement data, load flow calculation and other calculation values, and the effect of the quasi-real-time situation monitoring purpose of the low-voltage power distribution network is better.

The invention belongs to the field of power system relay protection, and particularly relates to a method for configuring a simplified graph through constant value setting, wherein the method comprises the following steps of: 1, acquiring a power distribution network SVG single-line diagram file from a power distribution network GIS diagram model system; 2, analyzing the SVG single-line diagram file of the power distribution network, identifying equipment needing to be protected in the single-line diagram, deleting and filtering information of other equipment except the equipment needing to beprotected, and generating a single-line simplified diagram required by the setting calculation of the power distribution network; and 3, setting a protection constant value of equipment needing to beprotected in the single-line simplified graph according to a setting principle. According to the method, the single-line simplified graph required by distribution network setting calculation can be automatically generated according to the GIS system related to the distribution network, and meanwhile, the constant value of the corresponding protection equipment is displayed, and only the protection constant value calculated by the system needs to be checked and checked manually, so that the working efficiency of setting calculation personnel is greatly improved.

The invention discloses a feeder group division method and device, and the method comprises the steps: carrying out the real-time topology analysis of the obtained extensible markup language graph-model information of a distribution network single line diagram, obtaining a graph-model conversion data table, dividing the lines in the graph-model conversion data table into different feeder groups according to a preset first keyword tag, and carrying out the real-time topology analysis of the obtained extensible markup language graph-model information of the distribution network single line diagram. The method comprises the following steps: acquiring different feeder groups, numbering the different feeder groups, numbering and arranging the different feeder groups to obtain feeder group data with different numbers, and classifying the feeder group data with different numbers to obtain a specific list of the feeder groups of the distribution network. Through the topology analysis technology and the feeder group division technology, the feeder groups are accurately and efficiently divided.

The invention provides an intelligent auxiliary system and method for regular inspection of a pressure pipeline, and relates to the field of inspection and detection of special equipment. The databaseis used for storing related rules and standards. The data acquisition module acquires inspection data of the to-be-inspected pressure pipeline; the input module is used for inputting pressure pipeline equipment information and inspection data and calling corresponding specifications and standards in a database; the graphic module generates a single line diagram of the pressure pipeline accordingto the received pressure pipeline parameter information; the logic judgment module calls related specifications and standards, performs logic judgment, selection and related calculation on the input information of the input module according to regulations, and sends a calculation result to the output module; and the output module outputs the received single line diagram and logic calculation result according to a corresponding text format. According to the inspection scheme, the workload of data query of inspectors is reduced, intermediate links with inspection reports are simplified, influence factors considered in inspection are reduced, and the inspection efficiency and quality are improved.

The invention discloses a distribution network self-healing line network frame problem intelligent analysis method and system. The method comprises the steps: carrying out the collection of mass data of a distribution network single line diagram system, a marketing system, a production system and an asset management system, carrying out the information extraction and filtering, obtaining the key information of a distribution network line, carrying out the information recombination analysis of the obtained information, and carrying out the intelligent analysis of the distribution network self-healing line network frame problem. And a recombination analysis result is put into a database, multi-dimensional intelligent analysis including a network frame unreasonable self-healing line, a process change non-timely self-healing line and problems in a feeder line group is carried out on data in the database, and the result is output to a multi-dimensional distribution network self-healing line problem analysis report. The analysis of the self-healing line net rack is intelligently realized without depending on the traditional manual checking analysis and statistics, so that the problem that the problem of the self-healing line net rack of the distribution network is difficult to find by depending on the manual analysis of the problem of the self-healing line net rack of the distribution network at present is solved; and the action effect of the self-healing line is difficult to guarantee when a distribution network fault occurs.

The invention discloses a low-voltage power distribution network graph generation method based on clustering analysis, and relates to the technical field of power distribution automation, and the method comprises the steps: S1, obtaining the equipment information of all equipment in a transformer area; S2, performing clustering analysis on the equipment information of all the equipment in the transformer area through a clustering algorithm; and S3, establishing a topological graph, an edge layout and a single-line graph of the equipment in the transformer district according to a clustering analysis result. According to the longitude and latitude coordinates and the equipment types of the low-voltage electrical equipment, grouping the electrical equipment according to branch objects, and generating a topological connection relationship by grouping equipment according to a hierarchical relationship. Therefore, the low-voltage power distribution network graph is automatically generated according to the longitude and latitude coordinates of the equipment, and the quality and the generation efficiency of the low-voltage power distribution network graph are effectively improved.

The invention relates to the field of intelligent power distribution safety, and provides an intelligent power distribution management system, which comprises a login module, a GIS inspection module and an electric energy quality analysis module, and is characterized in that the login module is used for setting staff identities, passwords and mobile phone numbers in the system; the GIS inspectionmodule is used for monitoring the operation states of switches and equipment on a distribution line in a power distribution room through a GIS line layout or a single line diagram, and generating electric energy quality parameters, wherein the parameters comprise voltage, harmonic waves, frequency and load balance degree; and the electric energy quality analysis module is used for monitoring the electric energy quality parameters to form an analysis report. According to the invention, the GIS inspection module, a remote monitoring module and an abnormity alarm module are used for multi-directional protection of the intelligent power distribution community, so that a message can be obtained at the first time when a fault occurs, and further processing is carried out.

The invention discloses a distribution network operation mode rationality evaluation method and system. Data association integration is carried out based on massive distribution network equipment ledger information, distribution network line operation information, distribution network line ring network point information and distribution network single line diagram information, and intelligent diagnosis is carried out on position information and line information of distribution network ring network points. The reasonability of the operation mode of the ring network point is automatically judged, and powerful support is provided for lean management of the distribution network; and the technical problems that the current management of the operation mode of the distribution network still stays at a manual management stage, the rationality of the operation mode of the distribution network cannot be effectively controlled, the timeliness and the accuracy cannot be ensured, the resource input amount is large, and the lean management level of the distribution network cannot be improved are solved.

The invention provides a line loss management method and system based on topology rectification, a storage medium and equipment. The method comprises the following steps: establishing a topology structure diagram according to an equipment distribution relation in a line single line diagram; calculating a theoretical line loss rate of the line according to the topological structure diagram, the equipment parameters and a pre-trained forward-backward substitution load flow calculation model; judging whether the theoretical line loss rate of the line is higher than the standard line loss rate; and if yes, returning to modify the topological relation and the equipment parameters in the topological structure diagram, and recalculating the theoretical line loss rate of the line until the theoretical line loss rate of the line is not higher than the standard line loss rate. According to the line loss management method and system based on topology rectification, the storage medium and the equipment, whether the theoretical line loss rate of the line is higher than the standard line loss rate or not is judged, and the topological relation and the equipment model are repeatedly corrected until the theoretical line loss rate of the line is not higher than the standard line loss rate, so that the theoretical line loss of the line is reduced, and the economic and energy-saving effects are achieved.

The invention discloses a single-line diagram layout method supporting mixed layout of expanded station buildings and non-expanded station buildings, and relates to a single-line diagram generation method. At present, a single-line diagram which is not expanded in a station building is usually used, and the current working requirement cannot be met. The method comprises the following steps: setting station building information, dividing station buildings into two layout requirements of unfolding and non-unfolding according to types, and storing the layout requirements of the station buildings;and the layout requirement of the station building is obtained, a single line diagram is generated according to the layout requirement of the station building, and the unfolding direction of the unfolded station building is consistent with the line trend. According to the technical scheme, a station house unfolding style and a station house non-unfolding style can be provided, a mixed layout modethat a part of station houses are unfolded and a part of station houses are not unfolded is supported, and the method is more flexibly suitable for various service scenes; and the unfolding directionof the unfolding station house is consistent with the line layout direction, the layout is clear, and intersection is less.

The invention relates to the field of intelligent power distribution safety, and provides an intelligent community power utilization safety management system. The intelligent community power utilization safety management system includes: a login module, a GIS inspection module, a power quality analysis module, and a progress monitoring module; the GIS inspection module is used for monitoring operation states of switches and devices on a distribution line in a distribution room through a GIS line layout or a single line diagram, and generating power quality parameters, wherein the parameters comprise voltage, harmonic waves, the frequency and the load balance degree; and the progress monitoring module is used for monitoring the work progress of maintenance personnel, communicating with theunmanned aerial vehicle according to an external instruction, obtaining a picture shot by inspection of the unmanned aerial vehicle and sending the picture to the intelligent power utilization interaction equipment terminal. According to the invention, the GIS inspection module, the progress monitoring module, the monitoring task synchronization module, the remote monitoring module and the like are used for carrying out multidirectional protection on the intelligent power distribution community, so that a message can be obtained at the first time when a fault occurs, and further processing iscarried out.

The invention discloses a distribution network line layer separation and synthesis algorithm. The distribution network line layer separation and synthesis algorithm specifically comprises the following steps: S1, layer separation algorithm: changing the unconcerned primitives into connecting lines; wherein point location information of the switches is calculated, all switch point locations of thecontact diagram corresponding to the contact switches are obtained at contact switch primitives, and the switch information in the contact diagram is displayed in an inverted sequence through intelligent calculation. The invention relates to the technical field of image algorithm research. The invention discloses a distribution network line layer separation and synthesis algorithm. Topologies of all primitives on a single-line diagram are calculated, a single-line diagram layer is separated according to points concerned by a user, a new line diagram concerned by the user is generated, and a contact diagram among multiple lines is calculated by using a contact algorithm for the lines with the contact relationship, so that the relationship among all the lines is visually and clearly displayed.

The embodiment of the invention discloses a method and a system for generating a distribution network strategy switch looped network diagram and checking a fixed value. The method comprises the following steps: identifying strategy switches in a single line diagram, and obtaining fixed value list information associated with the strategy switches; determining the arrangement sequence of the strategy switches according to the fixed value list information to form a looped network diagram; and checking the fixed value of the strategy switch in the looped network diagram by adopting a core fixed value checking algorithm. According to the technical scheme provided by the embodiment of the invention, the looped network graph is automatically generated by identifying the arrangement sequence of strategy switches, so that the condition that errors are easily caused by manual drawing can be effectively avoided, and the generation and use efficiency of the looped network graph can be improved; and fixed value checking is carried out on the basis of the generated looped network diagram, so that the setting accuracy is improved.

The invention discloses a distribution network ring network point change analysis method and system. The method comprises the following steps: associating slave equipment ledger information of a distribution network production system, distribution network line single line diagram model topology information of a distribution network GIS system, and work order information of a distribution network scheduling service system; and when the distribution network ring network point changes, automatically analyzing the reasons causing the change of the ring network point according to the preset judgment logic, and intelligently presenting analyzing the reasons in a list form. Manual analysis and filling are not needed, so that the technical problems of large workload, low efficiency, low accuracy and poor real-time performance in the process of the current analysis of the change of the ring network point of the power distribution network depends on manual making of distribution network ring network ledger data according to a distribution network single line diagram and manual filling are solved;.

The invention relates to the technical field of power distribution networks, and discloses a distribution network line single line diagram abnormity diagnosis analysis method, system and device. According to the line current data of the distribution network line in the single line diagram in the automatic master station system and the corresponding power supply distribution transformer number of the line in the line production ledger data, whether the distribution network line is abnormal or not is evaluated; calculating line loss on two sides of a contact point in an electricity room of the line according to the electric quantity data of the line and the distribution transformer of the metering automation system so as to determine whether the lines on two sides of the contact point are abnormal or not; and calculating the line loss and line loss rate of the distribution network line relative to the line production ledger data, the line marketing ledger data and the line metering ledger data according to the electric quantity data so as to determine the distribution network line with power transfer, and further generating corresponding single line diagram abnormity diagnosis analysis information according to an obtained judgment result. According to the method, the data of each professional system is combined, and efficient and intelligent diagnosis analysis of the distribution network single line diagram abnormity is realized.

The invention relates to the technical field of three-dimensional digital model construction, and discloses an elbow-shaped draft tube full-parametric three-dimensional modeling method, which comprises the following steps of: establishing a draft tube input shaft system and a section single-line diagram component, outputting a section single-line outline, eight extreme points and a central point,fitting the central points of all the single-line diagrams to generate a central axis, correspondingly coupling and lofting two adjacent single-line diagrams according to extreme point numbers by taking the central axis of the draft tube as a ridge line, establishing a segmented entity component, and outputting segmented entities by taking the two adjacent single-line diagrams and the central axisof the draft tube as input elements, and subjecting all the segmented entities to Boolean combination operation to generate a draft tube overall entity model. According to the elbow-shaped draft tubefull-parameterization three-dimensional modeling method, the design table containing section positioning and section size parameters serves as input, and the elbow-shaped draft tube full-parameterization three-dimensional model is rapidly established and can be dynamically modified.

The invention provides a virtual node-based power grid single line diagram automatic layout method, which comprises the following steps of: reading a power grid topological structure, acquiring all node and line sets, performing first-stage layout on all node lines by applying a first differential evolution algorithm to obtain an initial layout diagram, applying a second differential evolution algorithm to carry out optimized layout of a main region in the second-stage layout, determining the range of a virtual region based on virtual node coordinates, applying a third differential evolution algorithm to carry out layout of the virtual region in the second-stage layout, and carrying out layout in the range of the virtual region corresponding to each virtual node, obtaining the coordinate of each node, and completing the automatic layout of the power grid single line diagram. According to the method, a differential evolution algorithm is applied, a comprehensive layout and routing mode is adopted, a penalty term is introduced into a target function, the problem of automatic layout of the single line diagram of the annular belt radiation power grid is effectively solved, and automatic layout of the single line diagram can be completed more accurately and quickly by introducing virtual nodes.

The invention discloses an incremental distribution method from a single line diagram to a geographical wiring diagram of a power distribution network. Comprising the following steps: taking a feeder line of which equipment is changed as a basic edge cloth unit; firstly acquiring editing state and running state single line diagrams of a to-be-distributed feeder line from a power grid production management system; according to the editing state and operation state single line diagrams, obtaining incremental change data of the current editing state through comparative analysis from the single line diagram equipment graph and equipment ledger level; generating and maintaining equipment topology information according to the analyzed incremental change data; and finally, according to the topological information of the equipment, calculating the geographic coordinates of all other equipment of which the geographic coordinates are not maintained in the single line diagram, completing incremental distribution of the single line diagram, and automatically distributing incremental distribution data into a geographic wiring diagram data model. According to the invention, the increment distribution of the edit-state single line diagram is efficiently completed with extremely low analysis cost and data transmission quantity.

The embodiment of the invention discloses a method, device and equipment for determining a line transferable power supply rate and a storage medium. The method comprises the following steps: acquiringa medium-voltage line single line diagram of a distribution network system; analyzing a contact line of a line in the medium-voltage line single-line diagram; and analyzing the power supply transfercapability of the contact line, and determining the power supply transfer rate of the line according to the power supply transfer capability of the contact line. According to the embodiment of the invention, the single line diagram of the medium-voltage line is divided into different contact lines by reading the single line diagram of the medium-voltage line, and the power supply transfer capability of each contact line is calculated, so that the power supply transfer rate of the whole line is determined. Automatic calculation of the line power supply transfer capability and the rotatable power supply rate is realized, and the determination efficiency of the power supply transfer capability is improved.

The invention discloses a power distribution network load flow calculation method based on an improved forward-backward sweep method, which belongs to the field of power distribution. Firstly, a corresponding power distribution network related parameter table is generated, all nodes of a power distribution network are numbered in a full-automatic mode, a matrix A and a matrix B are generated through iterative node scale simplification processing, and then special processing on PV nodes is achieved; and the node injection power is replaced with the node injection current to avoid calculation ofbranch power loss during each iterative calculation. A power distribution network can be changed into a simple single-line diagram, so that the system scale is reduced; node injection current is usedfor replacing node injection power in a back substitution process, so that branch loss calculation time can be saved; through the reactive power correction equation of the PV nodes, the power distribution network containing the PV nodes is effectively processed, and the problem that the PV nodes in the power distribution network system cannot be processed in the existing technical scheme is avoided; under the condition of calculating the same configuration network, the method has the advantages of smaller error, better accuracy and higher calculation speed. The method can be widely applied tothe field of distribution network planning and management.

The invention discloses a geographical wiring diagram maintenance method and system, and a medium. The method comprises the steps of obtaining a transformer substation list, a transformer substation maintenance state, and a line list and a line maintenance state under a transformer substation; opening a geographical wiring diagram, and loading the maintained transformer substation and line data; selecting a line to be maintained and locking the line; displaying a corresponding line single line diagram, analyzing the maintainability of the equipment and the cable section, and recognizing the maintenance state of the equipment and the cable section in combination with a geographical wiring diagram; importing the corresponding equipment into the geographical wiring diagram by operating the equipment icons; the corresponding cable sections are guided into the geographical wiring diagram by operating the cable sections, the devices at the two ends are automatically connected according to the topology, and the angles of the devices are adjusted; and storing line maintenance of the line single line diagram and unlocking the line. According to the embodiment of the invention, the maintenance efficiency and data accuracy of the geographical wiring diagram can be improved.

The invention discloses a distribution network single line diagram artificial intelligence layout method and system, and a medium, and the method comprises the following steps: building a tree-shapeddirected graph object according to electrical equipment and topological connection information read from original line data of a distribution network single line diagram, and taking the electrical equipment as a node and the topological connection information as an edge; setting an overall layout planning rule of the distribution network single line diagram; and determining the trunk line, the positions of the nodes and the topological relation among the nodes according to the rule of the overall layout planning and the topological connection information. Compared with the prior art, the invention at least has the following beneficial effects that the human thinking process, cognitive habits, aesthetic preferences and other factors are organically fused with the automatic layout algorithmof the distribution network single line diagram, so that the final effect of machine drawing is closer to the final effect of manual drawing, and the practicability of machine drawing is improved.