CN103226841B - Based on the substation visual method for commissioning of virtual reality technology - Google Patents
Based on the substation visual method for commissioning of virtual reality technology Download PDFInfo
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Abstract
The invention discloses a kind of substation visual method for commissioning based on virtual reality technology, comprising: modeling is carried out to transformer station and generates transformer station's three dimensional device scene; Load described power station three-dimensional device context, the electrical connection of search charging topological node, generates transformer station's charging topological model; Analyze described transformer station charging topological model, calculate the charging topological node set of drawing in charging process in real time; Charging described in dynamic drafting the charging link of topological node set, represents charging process.The present invention accurately, reflect the state of field apparatus and environment realistically, demonstrate the charging process that puts into operation visual in imagely, facilitate user to check field apparatus with multi-angle in all directions.
Description
Technical field
The present invention relates to a kind of substation visual method for commissioning, particularly relate to a kind of substation visual method for commissioning based on virtual reality technology, belong to Simulating technique in Electric Power System field.
Background technology
Transformer station is the important step in electric system, in order to ensure the safety and stability of transformer station, must ensure that the equipment moment in transformer station is in normal condition.In power grid construction process, often have new transformer station and replace old transformer station, more new transformer station slowly adds electrical network and puts into operation.In order to ensure that transformer station puts into operation carrying out smoothly of work, operations staff needs to carry out preliminary work before a large amount of putting into operation, and often needs operations staff be familiar with a secondary device to scene and carry out on-site training to operations staff.In addition, putting into operation smoothly in order to ensure transformer station, all levels of management personnel need repeatedly to arrive site inspection and instruct the charging scheme and manoeuvre puts into operation before transformer station puts into operation.In order to meet above-mentioned transformer station put into operation before and the work in every requirement of period of putting into operation, mainly through photo, video, two-dimentional wiring diagram, scene, operations staff to check etc. that manual type is familiar with field apparatus, demonstration puts into operation scheme and the process that puts into operation.Above working method exists cannot check field apparatus in all directions, with multi-angle, or field apparatus is shown directly perceived not, cannot demonstrate the problems such as charging process that put into operation visually.
At present, three-dimensional virtual reality technology has been widely used in the application such as emulation training, visual presentation, virtual test of electric system, can more accurately, reflect realistically and the state of field apparatus and environment greatly improve visual experience and the man-machine interaction experience of user.Although this three-dimensional virtual reality technology has been applied in the links of electrical network gradually, the process that puts into operation this technology being applied to transformer station also exists a lot of technical matters have been needed to solve.
Summary of the invention
For the deficiency existing for prior art, technical matters to be solved by this invention is to provide a kind of substation visual method for commissioning based on virtual reality technology.The method can the actual state of imitating substation, the process that puts into operation of true reappearance transformer station.
For realizing above-mentioned goal of the invention, the present invention adopts following technical scheme:
Based on a substation visual method for commissioning for virtual reality technology, comprise the steps:
Modeling is carried out to transformer station and generates transformer station's three dimensional device scene;
Load described transformer station three dimensional device scene, the electrical connection of search charging topological node, generates transformer station's charging topological model;
Analyze described transformer station charging topological model, calculate the charging topological node set of drawing in charging process in real time;
Charging described in dynamic drafting the charging link of topological node set, represents charging process.
Wherein more preferably, describedly modeling is carried out to transformer station and the step generating transformer station's three dimensional device scene comprises further:
Each equipment in transformer station and parts thereof are created to three-dimensional model and derives three-dimensional model file;
Load the three dimensional device scene that three-dimensional model file generated is consistent with real scene;
Binding three dimensional device model and equipment state real-time data record.
Wherein more preferably, the described power station three-dimensional device context of described loading, the electrical connection of search charging topological node, the step generating transformer station's charging topological model comprises further:
1) travel through all power equipments in transformer station's actual scene and electrical wiring, generate transformer station's charging topological node set;
2) the charging topological node of the adjacent connection of search charging topological node, sets up the annexation of charging topological node;
3) by step 2) search for the electrical connection of all charging topological nodes, generate charging topological model.
Wherein more preferably, the charging topological node of the adjacent connection of described search charging topological node, the step setting up the annexation of charging topological node comprises further:
A each summit of () traversal charging topological node device model, calculates the cubical center point coordinate of all charging topological nodes outsourcing and length;
B () judges whether the outsourcing cube of current charging topological node has crossing with the outsourcing cube of other topological nodes that charge, if have crossing, obtain the charging topological node subclass with the outsourcing cube overlapping relation of this charging topological node, if do not intersected, return the outsourcing cube continuing search next charging topological node;
C (), for charging topological node subclass, accurately judges the electric connecting relation in this charging topological node between power equipment model and electrical wiring model further;
D (), by the charging topological node of the adjacent connection of all charging topological nodes in step (c) search charging topological node subclass, sets up current charging topological node and the adjacent annexation being communicated with the topological node that charges with it.
Wherein more preferably, described analysis described transformer station charging topological model, the step calculating the topological node set of charging of drawing in charging process in real time comprises further:
Adopt the method for recurrence access, find out all charging topological nodes charged in transformer station's charging topological model, and added topological node set of charging.
Wherein more preferably, the method for described employing recurrence access comprises further:
The initiation of charge topological node of recurrence access is the initial power supply point of charging;
If current charging topological node was accessed, this charging topological node was not processed;
Drew if current charging topological node is not accessed and completed charging process, the adjacent charging topological node of the topological node that charges before continuing recurrence access;
If current charging topological node was not accessed and carried out charging process drafting, front charging topological node was not processed;
If current charging topological node was not accessed and do not met above-mentioned condition, charging process mark was so set, front charging topological node was added topological node set of charging.
Wherein more preferably, the charging link of topological node set of charging described in described dynamic drafting, the step representing charging process comprises further:
Complete dynamic drafting according to distinct device type to charge the charging link of topological node set, specifically comprise,
For power equipment class charging topological node dynamic drafting, switch to charging to indicate the color rendering mode of look the three-dimensional rendering pattern of power equipment and subassembly thereof, dynamic drafting is carried out to power equipment and subassembly thereof, charging process complement mark is set;
For electrical wiring class charging topological node dynamic drafting, whether dynamic drafting is complete to judge this electrical wiring class charging topological node, if complete dynamic drafting, charging process complement mark is then set, if do not complete dynamic drafting, then return and continue to carry out charging process drafting, until charging process is drawn complete to this electrical wiring class charging topological node.
Substation visual method for commissioning provided by the present invention, by the on-the-spot outdoor scene that the three-dimensional live sand table reproduction transformer station of transformer station puts into operation, the duty of field apparatus and environment can be reflected accurately, realistically, demonstrate the charging process that puts into operation visual in imagely, facilitate user to check field apparatus with multi-angle in all directions.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet generating transformer station's charging topological model in the present invention;
Fig. 2 is the schematic flow sheet that drafting topological node set charging link represents charging process.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
The invention provides a kind of substation visual method for commissioning based on virtual reality technology, comprising: according to the actual scene of transformer station three-dimensional modeling carried out to transformer station and generate transformer station's three dimensional device scene; Load this transformer station's three dimensional device scene, the charging topological node electric connecting relation in search three dimensional device scene, generate transformer station's charging topological model; Analyze this transformer station charging topological model, calculate the charging topological node set of drawing in charging process in real time; In the set of dynamic drafting charging topological node, the charging link of each charging topological node, represents charging process.Detailed description is launched to this substation visual method for commissioning below.
Generating in the process of transformer station's three dimensional device scene to transformer station's modeling, three dimensional device subassembly model is the base unit building transformer station's three dimensional device scene, multiple three dimensional device subassembly model can be built into a three dimensional device object, and multiple three dimensional device object is built into transformer station's three dimensional device scene.Keep electric state consistent in order to make the three-dimensional transformer substation built based on virtual reality technology with the transformer station in physical world, in the present invention, the equipment subassembly relevant to equipment status parameter is all created three-dimensional model, the oil temperature oil level gage subassembly of such as transformer equipment object, the ground wire subassembly etc. of switch tool equipment.Device object one_to_one corresponding in three dimensional device object and actual scene, device status data in actual scene is kept in the equipment state real-time data base of electrical network in real time, and three dimensional device object can by reading relevant device status data in network slave status real-time data base.Three dimensional device object mainly comprises the electrical wiring object between power equipment object and power equipment, and the electrical wiring object between power equipment object and power equipment is interconnected to constitute three-dimensional transformer station.In transformer station's three dimensional device scene, each power equipment is made up of multiple equipment subassembly.Equipment subassembly type comprises normal static parts, status indicating part and equipment connecting part.Wherein normal static parts are parts of not changing of outward appearance and position in the application, such as power equipment main body, porcelain insulator etc.Status indicating part is used to indicate switch and disconnecting link divides the parts with state, such as switch deciliter indicator, disconnecting link arm, tool arm etc.When a deciliter state for switch or disconnecting link changes, such status indicating part is with the form of animation display deciliter state.Equipment connecting part is mainly connecting terminal members, for the connection of power equipment and electrical wiring.The commercial modeling tool of existing maturation can be selected, such as 3 d modeling software 3DSMax etc. to the device model modeling in transformer station.
Transformer station's modeling is generated to three-dimensional transformer substation and makes an inspection tour the step of scene and specifically comprise:
1) 3 d modeling software is utilized, the data informations such as the photo of the Dimensions according to power equipment each in actual scene, all angles shooting from power equipment, create three-dimensional model to each power equipment in transformer station and parts thereof and derive three-dimensional model file.
2) part of appliance object is generated in loading three-dimensional model file to three-dimensional transformer substation scene, then be three dimensional device object by part of appliance object assembling, and utilize the edit methods such as movement, Rotation and Zoom, three dimensional device object is placed in correct locus, the three dimensional device scene that generation and real scene are consistent.
3) bind equipment state real-time data record corresponding in three dimensional device object and database, the ID of this equipment record is obtained the key word of the inquiry of data as three dimensional device object from equipment state real-time data base.
In order to the process that imitating substation puts into operation according to true circuit, need to build three-dimensional substation topology model according to the real topology of transformer station.The topological node set that three-dimensional substation topology model is made up of multiple topological node.The attribute of each topological node comprises other topological node set of corresponding power equipment or electrical wiring object, the adjacent connection of this topological node.The present invention adopts the data structure based on non-directed graph to build three-dimensional substation topology model.As shown in Figure 1, loaded with substation three dimensional device scene, the electrical connection of search charging topological node, the step generating transformer station's charging topological model specifically comprises as follows:
1) travel through all power equipments in transformer station's actual scene and electrical wiring, generate transformer station's charging topological node set.
In the present invention, generate according to different device types the topological node that charges accordingly.Such as, power equipment generates power equipment charging topological node; Electrical wiring generates electrical wiring charging topological node.In transformer station's actual scene, because insulation kind equipment cannot charge, in the present invention, do not generate charging topological node.Power equipment is divided in low pressure grade power equipment and high pressure level power equipment according to electric pressure, and the power equipment of different electric pressure generates the topological node that charges accordingly respectively.Such as, for low pressure grade power equipment, due to the not phase-splitting of low pressure grade power equipment, each low pressure grade power equipment and corresponding connecting object generate a charging topological node and add substation topology model; For high pressure level power equipment, should consider that high pressure level power equipment and electrical wiring exist A, B, C three-phase, can the out of phase power equipment of same high pressure level power equipment or electrical wiring object be included in same charging topological node and add substation topology model.Merge above-mentioned charging topological node and obtain the set of charging topological node.
2) for each charging topological node in charging topological model carries out topological relevant search, obtain the charging topological node set be connected with each charging topological node respectively, set up the annexation between charging topological node.
In the present invention, according to the actual scene of transformer station, the adjacent charging topological node of search charging topological node, finds out the charging topological node of the adjacent connection of each charging topological node, the annexation between the charging topological node setting up the adjacent connection with it of charging topological node.In order to improve search efficiency, this step have employed outsourcing cube and intersects the method that pre-search algorithm and topological connectivity search algorithm combine, and is described as follows:
A () certain charging topological node selected carries out Topology connection search, first carry out outsourcing cube and intersect pre-search, need the cubical information of outsourcing obtaining this node, method is each apex coordinate of this charging topological node corresponding device object of traversal, calculates this cubical center point coordinate of charging topological node outsourcing and length.
The present invention obtains the outsourcing cube of current charging topological node by the apex coordinate that this charging topological node device object of traversal is all.Suppose the minimum and maximum coordinate (i.e. Xmin, Xmax, Ymin, Ymax, Zmin, Zmax) of current charging topological node outsourcing cube in X, Y, Z axis.Then the three-dimensional coordinate on cubical eight summits of outsourcing is respectively (Xmin, Ymin, Zmin), (Xmin, Ymax, Zmin), (Xmax, Ymin, Zmin), (Xmax, Ymax, Zmin), (Xmin, Ymin, Zmax), (Xmin, Ymax, Zmax), (Xmax, Ymin, Zmax), (Xmax, Ymax, Zmax).The cubical center point coordinate of this charging topological node outsourcing is ((Xmin+Xmax)/2, (Ymin+Ymax)/2, (Zmin+Zmax)/2).The cubical length of this charging topological node outsourcing is respectively (Xmax-Xmin), (Ymax-Ymin), (Zmax-Zmin).The cubical minimum length of side of this charging topological node outsourcing is the minimum value of length.
B the () topological node that the outsourcing cube of this topological node and other charged carries out test for intersection successively, if intersected, then and the charging topological node subclass that outsourcing cube test node being added this topological node intersects; After being completed, if the topological node subset that the outsourcing cube of this topological node intersects is combined into sky, then shows do not have topological node to be connected with this topological node, return the topology search that step a continues next topological node; If the topological node subclass that outsourcing cube intersects is not empty, then proceeds step c and carry out intersecting further judging.
Shown in composition graphs 1, below for the overlapping relation between the outsourcing cube A of the topological node a that charges and the outsourcing cube B of charging topological node b, crossing determination methods whether is had to be specifically described to the charge outsourcing cube of topological node of current charging topological node and other:
According to the minimum and maximum coordinate of the X, Y, Z axis of outsourcing cube A and outsourcing cube B, the distance of eight summits to outsourcing cube B central point of outsourcing cube A is calculated successively according to step (a), if the distance of a certain summit of outsourcing cube A and outsourcing cube B central point is less than the half of the minimum length of side of outsourcing cube B, then can judge that this summit is included in outsourcing cube B, namely outsourcing cube A and outsourcing cube B intersects;
Oppositely obtain the distance of eight summits to outsourcing cube A central point of outsourcing cube B successively, if the distance of a certain summit of outsourcing cube B and outsourcing cube A central point is less than the half of the minimum length of side of outsourcing cube A, then can judge that this summit is included in outsourcing cube A, namely outsourcing cube A and outsourcing cube B intersects;
If above-mentioned condition does not all meet, then can judge that outsourcing cube A and outsourcing cube B is non-intersect.
C (), for the charging topological node subclass intersecting evaluation algorithm above by outsourcing cube and obtain, judges further and finally determines the topological node set with this topological node with electric connecting relation.
The charging topological node subclass that the outsourcing cube that this step obtains for step (b) intersects, carry out further test for intersection successively, if intersected, then test topology node adds the topological node set with electric power annexation.
In transformer station, the electrical connection between power equipment is mainly divided into following three kinds: the electrical connection between electrical wiring and electrical wiring, the electrical connection between electrical wiring and power equipment, electrical connection between power equipment and power equipment.Below for the electric connecting relation between electrical wiring A, electrical wiring B, power equipment A, power equipment B, in the three dimensional device model of Virtual Substation, the determination methods of the electrical connection between electrical wiring model A, electrical wiring Model B, power equipment model A, power equipment Model B is described in detail:
If the space length of one of two end points of one of two end points of electrical wiring model A and electrical wiring Model B is less than the distance threshold of specifying, then the electrical connection of electrical wiring model A and electrical wiring Model B is intersected; If the space length of one of two end points of one of two end points of electrical wiring model A and electrical wiring Model B is not less than the distance threshold of specifying, then electrical wiring model A and electrical wiring Model B can be judged to be that electrical connection is non-intersect.
If one of two end points of electrical wiring model A are less than the distance threshold of specifying with the centre distance of arbitrary connecting terminal members of power equipment Model B, if then judge that the electrical connection of electrical wiring model A and power equipment Model B is intersected; If one of two end points of electrical wiring model A are not less than the distance threshold of specifying with the centre distance of arbitrary connecting terminal members of power equipment Model B; Then electrical wiring model A and power equipment Model B can be judged to be that electrical connection is non-intersect.
If the centre distance of arbitrary connecting terminal members of power equipment model A and arbitrary connecting terminal members of power equipment Model B is less than the distance threshold of specifying, then the electrical connection of power equipment model A and power equipment Model B is intersected; If the centre distance of arbitrary connecting terminal members of power equipment model A and arbitrary connecting terminal members of power equipment Model B is not less than the distance threshold of specifying, then power equipment model A and power equipment Model B can be judged to be that electrical connection is non-intersect.
D the charging topological node of the adjacent connection of all charging topological nodes in () search charging topological node subclass, sets up the annexation of current charging topological node and the adjacent charging topological node be communicated with it.
3) search for the electrical connection of all charging topological nodes, generate charging topological model.
Judge in the set of charging topological node, whether all charging topological nodes have been searched for complete.If do not search for complete, according to above-mentioned steps 2) step that describes, all charging topological nodes do not searched in the set of charging topological node are searched for, until complete after searching for all charging topological nodes.Transformer station's charging topological model can be generated after search.
Transformer station puts into operation process mainly from old transformer station to new transformer station, each equipment progressively charged (such as transformer charging, busbar charging, electrical wiring circuit charge) until the process that puts into operation of whole transformer station.As shown in Figure 2, in order to meet transformer station put into operation before and put into operation period work in every requirement, demonstrate the scheme that puts into operation and the process that puts into operation better, the present invention is on the basis analyzing transformer station's charging topological model, the charging topological node set that real-time calculating is drawn in charging process, the on-the-spot outdoor scene put into operation by the three-dimensional live sand table of transformer station reproduction true to nature transformer station.The present invention is in conjunction with network communication, the state of each power supply point is gathered from the equipment state real-time data base of electrical network, by the state of each power equipment and electrical wiring in synchronous substation field outdoor scene, dynamic drafting charging link, the charging process of simulation reconstruction transformer station.When dynamic drafting charging link, by the network analysis to transformer station's charging topological model, calculate the charging topological node of current charging process drafting in real time and three-dimensional rendering pattern is set.Below to analysis transformer station charging topological model, the step calculating the topological node set of charging of drawing in charging process is in real time described in detail:
The mode that the present invention adopts recurrence to access, calculates the topological node of current ongoing charging process dynamic drafting.The initiation of charge topological node of recurrence access is the initial power supply point of charging, and the process of recurrence access charging topological node is divided into following several situation: if current charging topological node was accessed, be left intact to this charging topological node; If current charging topological node was not accessed and completed charging process and draws, continued the adjacent charging topological node that recurrence accesses this charging topological node; If current charging topological node was not accessed and carried out charging process drafting, this charging topological node was left intact; If current charging topological node was not accessed and do not met above-mentioned condition, charging process mark was so set, this charging topological node was added topological node set of charging.If the charging topological node that this is charging is electrical wiring class charging topological node, need to judge that whether the direction of this electrical wiring charging topological node charging is identical with the vertex order of electrical wiring, if whether the direction of this electrical wiring charging topological node charging is not identical with the vertex order of electrical wiring, the summit of the electrical wiring that this charging topological node that reverses is corresponding.
The mode adopting above-mentioned recurrence to access, finds out all charging topological nodes charged in transformer station's charging topological model, and is added topological node set of charging, to treat dynamic drafting charging link.
As shown in Figure 2, the mode dynamic drafting charging link that the present invention adopts dynamic process painted, simulation shows transformer station puts into operation in process as bus and circuit carry out the process of charging.After charging starts, along the flow direction of charging current, adopt three-dimensional charging instruction look to the device model charged in scene and the part of appliance model that charged carry out painted with play up.Each frame in real-time rendering three-dimensional picture, carries out charging process drafting to the charging topological node charged in topological node set, by the drafting of series of frames, shows the charging process of circuit.Charging to dynamic drafting the charging link of topological node set below, and the step representing charging process is described in detail:
As shown in Figure 2, dynamic drafting charge node mainly divides power equipment class charging topological node dynamic drafting and electrical wiring class charging topological node dynamic drafting.For power equipment class charging topological node dynamic drafting, switch to charging to indicate the color rendering mode of look the three-dimensional rendering pattern of power equipment and subassembly thereof, then charging process complement mark is set.For electrical wiring class charging topological node dynamic drafting, in every series of frames, whether dynamic drafting is complete first to judge this electrical wiring class charging topological node, if complete dynamic drafting, then arranges charging process complement mark; If do not complete dynamic drafting, then continue to calculate the model part that charged in current wiring and the instruction look that is set to charge play up mode.Repeat above-mentioned processing mode, until charging process is drawn complete.The present invention with the visual in image process that puts into operation showing transformer station of the mode of animation, can more accurately, reflect the state of field apparatus and environment realistically.
Above the substation visual method for commissioning based on virtual reality technology provided by the present invention is described in detail.For one of ordinary skill in the art, to any apparent change that it does under the prerequisite not deviating from connotation of the present invention, all by formation to infringement of patent right of the present invention, corresponding legal liabilities will be born.
Claims (5)
1., based on a substation visual method for commissioning for virtual reality technology, it is characterized in that comprising the steps:
Modeling is carried out to transformer station and generates transformer station's three dimensional device scene;
Load described transformer station three dimensional device scene, all power equipments in traversal transformer station actual scene and electrical wiring, generate the charging topological node set of transformer station; Search for and adjacent other topological node that charges be communicated with of charging topological node, set up the annexation of each charging topological node, generate transformer station's charging topological model;
Analyze described transformer station charging topological model, calculate the charging topological node set of drawing in charging process in real time;
Charging described in dynamic drafting the charging link of topological node set, represents charging process;
Wherein, described search and adjacent other topological node that charges be communicated with of charging topological node, the step setting up the annexation of each charging topological node comprises further:
A each summit of () traversal charging topological node device model, calculates the cubical center point coordinate of all charging topological nodes outsourcing and length;
B () judges whether the outsourcing cube of current charging topological node has crossing with the outsourcing cube of other topological nodes that charge, if have crossing, obtain the charging topological node subclass with the outsourcing cube overlapping relation of this charging topological node, if do not intersected, return the outsourcing cube continuing search next charging topological node;
C (), for charging topological node subclass, judges the electric connecting relation in this charging topological node between power equipment model and electrical wiring model further;
D (), by all with the adjacent charging topological node be communicated with of charging topological node in step (c) search charging topological node subclass, sets up current charging topological node and the adjacent annexation being communicated with the topological node that charges with it.
2. substation visual method for commissioning as claimed in claim 1, is characterized in that describedly carrying out modeling to transformer station and the step generating transformer station's three dimensional device scene comprises further:
Each equipment in transformer station and parts thereof are created to three-dimensional model and derives three-dimensional model file;
Load described three-dimensional model file, generate the three dimensional device scene be consistent with real scene;
Binding three dimensional device model and equipment state real-time data record.
3. substation visual method for commissioning as claimed in claim 1, it is characterized in that analyzing described transformer station charging topological model, the step calculating the topological node set of charging of drawing in charging process in real time comprises further:
Adopt the method for recurrence access, find out all charging topological nodes charged in transformer station's charging topological model, and added topological node set of charging.
4. substation visual method for commissioning as claimed in claim 3, is characterized in that the method that described employing recurrence is accessed comprises further:
The initiation of charge topological node of recurrence access is the initial power supply point of charging;
If current charging topological node was accessed, this charging topological node was not processed;
If current charging topological node was not accessed and completed charging process and draws, continued the adjacent charging topological node that recurrence accesses current charging topological node;
If current charging topological node was not accessed and carried out charging process drafting, current charging topological node was not processed;
If current charging topological node was not accessed and do not met above-mentioned condition, charging process mark was so set, current charging topological node was added topological node set of charging.
5. substation visual method for commissioning as claimed in claim 1, the charging link of the topological node set that it is characterized in that charging described in dynamic drafting, the step representing charging process comprises further:
For power equipment class charging topological node dynamic drafting, switch to charging to indicate the color rendering mode of look the three-dimensional rendering pattern of power equipment and subassembly thereof, dynamic drafting is carried out to power equipment and subassembly thereof, charging process complement mark is set;
For electrical wiring class charging topological node dynamic drafting, whether dynamic drafting is complete to judge this electrical wiring class charging topological node, if complete dynamic drafting, charging process complement mark is then set, if do not complete dynamic drafting, then return and continue to carry out charging process drafting, until charging process is drawn complete to this electrical wiring class charging topological node.
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| CN110738018A (en) * | 2019-09-23 | 2020-01-31 | 杭州电子科技大学 | automatic mapping method for low-voltage split-phase wiring diagram based on virtual wiring decomposition |
| CN112241586B (en) * | 2020-09-16 | 2022-10-25 | 国网宁夏电力有限公司培训中心 | Method and device for judging state of topological switch node of alternating current network for station |
| CN114595018B (en) * | 2022-02-16 | 2023-09-15 | 南方电网数字电网科技(广东)有限公司 | Three-dimensional display method and device for current flow direction, computer equipment and storage medium |
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