CN114202616A - Rapid construction method of transformer substation digital twin body - Google Patents
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Abstract
The invention belongs to the field of electric power system digitization, and particularly relates to a method for quickly constructing a digital twin body of a transformer substation, which comprises the following steps: s1, establishing a civil engineering facility and an electrical equipment three-dimensional model library of the transformer substation digital twin; s2, splitting the transformer substation civil engineering facility and each electrical device into functional unit structures according to a target transformer substation design drawing, and collecting data sets of each functional unit structure of the target transformer substation; s3, constructing a description file of the digital twin body of the target substation by using a civil engineering facility and electrical equipment three-dimensional model library of the digital twin body of the substation and a data set of each functional unit structure of the target substation; and S4, calling a civil engineering facility and an electrical equipment model library to quickly generate the digital twin of the target substation according to the description file of the digital twin of the target substation. The method can realize the rapid construction of the digital twin body of the transformer substation and improve the modeling efficiency.
Description
Technical Field
The invention belongs to the field of digitization of power systems, and particularly relates to a rapid construction method of a transformer substation digital twin body.
Background
With the rapid rise of new-generation digital technologies such as block chains, internet of things, artificial intelligence and the like, the application of digital services and operation in the power industry is obviously increased, and the novel power system is developing towards the direction of digitization and intelligence. The transformer substation is used as an important component of a power transmission and distribution link of the power system, and the digitization of the transformer substation has important significance for accelerating the digitization transformation of the power system. The digital twin takes a new generation digital technology as a support, and can realize the bidirectional mapping of a physical entity and a digital model. The digital twin transformer substation is established, the running state of the system can be monitored in real time, potential faults can be found in time, and an auxiliary decision basis is provided for intelligent operation and maintenance of the transformer substation.
At present, the research on the transformer substation digital twin is in the starting stage, and most research focuses on discussing the application effect of the transformer substation digital twin, and the research on how the transformer substation digital twin is constructed and the ground application are less. In terms of the current technical development level, a 3D point cloud picture is mainly obtained by using a ground three-dimensional laser scanner for constructing a digital twin model of a transformer substation. However, the electrical equipment of the transformer substation is numerous and has a complex structure, the point cloud data obtained by scanning is very huge, the processing technology of the point cloud data is complex, and the technical difficulty is high. Moreover, the laser scanner cannot acquire the color texture of the electrical equipment of the substation, and in order to improve the authenticity of modeling, mapping processing must be performed at a later stage.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for quickly constructing a digital twin body of a transformer substation.
The object of the invention is achieved by the following technical measures.
A rapid construction method of a transformer substation digital twin body comprises the following steps:
and S1, establishing a three-dimensional model library of civil facilities and electrical equipment of the transformer substation digital twin body, wherein the three-dimensional model library comprises 5 sub-libraries including a basic three-dimensional graphic library, a basic three-dimensional unit library, a functional unit structure library, a spatial position library and a facility equipment texture library.
And S2, splitting the civil engineering facilities and the electrical equipment of the transformer substation into functional unit structures according to a target transformer substation design drawing, and collecting data sets of the functional unit structures of the target transformer substation, wherein the data sets comprise 3 data subsets including a coordinate data set, a texture data set and a working condition data set.
And S3, constructing a description file of the target substation digital twin body by using a civil engineering facility and electrical equipment three-dimensional model library of the substation digital twin body and a data set of each functional unit structure of the target substation, wherein the description file comprises coordinate description, texture description and working condition description.
And S4, calling a civil engineering facility and an electrical equipment model library to quickly generate the digital twin of the target substation according to the description file of the digital twin of the target substation.
Further, in the step S1, the three-dimensional model library of the civil engineering facility and the electrical equipment stores basic three-dimensional graphs required for constructing the digital twin of the transformer substation, and basic three-dimensional units and functional unit structures facing the civil engineering facility of the transformer substation and each electrical equipment, and is mainly used for assisting in rapid three-dimensional modeling of the digital twin of the transformer substation. When a transformer substation digital twin body is constructed, if a civil engineering facility and an electrical equipment three-dimensional model library contain required functional unit structures, the functional unit structures can be directly called. If the required functional unit structure cannot be searched in the three-dimensional model base of the civil engineering facility and the electrical equipment, the basic three-dimensional unit facing the civil engineering facility of the transformer substation and each electrical equipment is constructed by the basic three-dimensional graph, and then the target functional unit structure is constructed by the plurality of basic three-dimensional units. And adding the newly constructed target function unit structure into a three-dimensional model library of the civil engineering facility and the electrical equipment so as to facilitate quick modeling when the same or similar function unit structures are reused.
Further, the three-dimensional model library of the civil engineering facility and the electrical equipment described in the step S1 includes 5 sub-libraries of a basic three-dimensional graphic library, a basic three-dimensional unit library, a functional unit structure library, a spatial location library and a facility equipment texture library. The basic three-dimensional graph library is used for storing the most basic three-dimensional graph, is constructed according to the topological principle, and at least comprises 4 basic three-dimensional graphs including a prism, a cylinder, a sphere and a torus, wherein the edge length, the height and the radius of the basic three-dimensional graph are all unit lengths. The basic three-dimensional unit library is used for storing basic three-dimensional units generated by coordinate transformation of basic three-dimensional graphs. For example, the cone and the truncated cone can be generated by a cylinder through coordinate transformation; ellipsoids can be generated from spheres through coordinate transformation. Therefore, various basic three-dimensional units for building three-dimensional models of the transformer substation civil engineering facility and each electrical device can be generated by using the basic three-dimensional graphs, so that the multiplexing of the three-dimensional models is realized.
Further, the functional unit structure library in step S1 is used to store functional unit structures formed by disassembling the substation civil engineering facility and each electrical device according to functions, and each functional unit structure is composed of a plurality of basic three-dimensional units. The functional unit structure library is stored in three levels: the first level is civil engineering facilities and electrical equipment; the second level is civil engineering facility number and electrical equipment model; the third level is a functional unit structure. Through the three-level storage directory, the functional unit structure in the functional unit structure library can be quickly searched. The space position library is used for storing the corresponding coordinates of the three-dimensional graphs in the basic three-dimensional graph library, the basic three-dimensional unit library and the functional unit structure library in a world coordinate system. The facility equipment texture library is used for storing texture pictures of the civil engineering facilities of the transformer substation and the functional unit structures of each electrical equipment, and three-level storage is adopted: the first level is civil engineering facilities and electrical equipment; the second level is civil engineering facility number and electrical equipment model; the third level is a functional unit structure; through the three-level storage directory, texture pictures of the transformer substation civil engineering facilities and the functional unit structures of the electrical equipment in the facility equipment texture library can be quickly retrieved.
Further, step S2 "split the civil engineering facility of the transformer substation and each electrical device into functional unit structures according to the design drawing of the target transformer substation, and collect data sets of each functional unit structure of the target transformer substation, including 3 data subsets of the coordinate data set, the texture data set, and the operating condition data set" specifically includes:
and S2.1, according to a design drawing of the target transformer substation, dividing the civil engineering facility and each electrical device into functional unit structures according to functions.
And S2.2, importing the CAD design drawing of the transformer substation into graphic processing software, and quickly extracting the spatial position coordinates of the civil engineering facility and each electrical device. And classifying the coordinates according to the functional unit structures, and then storing the coordinates of each functional unit structure by adopting a three-level storage rule, thereby establishing a coordinate data set of the target transformer substation.
S2.3, retrieving a three-level storage directory of the facility equipment texture library, if the texture of the current functional unit structure is contained, not acquiring a texture picture, and storing the three-level storage directory of the target texture in the facility equipment texture library in a texture data set; and if the target texture is not retrieved, acquiring a texture picture of the current functional unit structure, storing the texture picture into the facility equipment texture library, and storing a three-level storage directory of the target texture in the facility equipment texture library in the texture data set. And storing the texture data by adopting a three-level storage rule, thereby establishing a texture data set of the target substation.
S2.4, installing advanced sensors and monitoring terminals aiming at key function unit structures of the electrical equipment, converging communication ports of the monitoring terminals to data concentrators, and connecting the data concentrators to a control center through communication links. And the control center collects the working condition data of the key function unit structure collected by each monitoring terminal in an inquiry-response mode. And the working condition data are stored by adopting a three-level storage rule, so that a working condition data set of the target transformer substation is established.
Further, in step S3, "building a description file of the target substation digital twin body by using a three-dimensional model library of civil facilities and electrical equipment of the substation digital twin body and a data set of each functional unit structure of the target substation, where the description file includes coordinate description, texture description, and operating condition description," specifically:
and S3.1, constructing coordinate description. Firstly, the coordinate system of the target substation CAD design drawing in the step S2 is converted into the world coordinate system of the spatial location library in the step S1 through coordinate system conversion, and a coordinate system conversion matrix is calculated. And multiplying the coordinate data set in the step S2 by a coordinate system transformation matrix to obtain a coordinate data set of the target substation civil engineering facility and each electrical equipment functional unit structure in a world coordinate system. Then, the functional unit structure library is retrieved according to the three-level storage directory of the coordinate data set. If the functional unit structure library comprises the current functional unit structure, the specific position of the current functional unit structure in the transformer substation digital twin body can be determined through translation and rotation, and a coordinate transformation matrix for realizing translation and rotation and a three-level storage directory of the current functional unit structure in the spatial position library are recorded. If the current function unit structure can not be searched in the function unit structure library, a new basic three-dimensional unit is constructed by the basic three-dimensional graphics in the basic three-dimensional graphics library through translation, rotation and scaling, and then the current function unit structure is formed by the plurality of basic three-dimensional units through translation, rotation and scaling. Functional unit structures are added to the electrical equipment model base to facilitate rapid modeling when the same or similar functional unit structures are reused. And recording a coordinate transformation matrix for realizing translation, rotation and scaling and a three-level storage directory of the current functional unit structure in the spatial position library, thereby establishing the coordinate description. Through the steps, the physical geometric framework of the substation digital twin body is quickly constructed according to the coordinate description.
And S3.2, constructing texture description. The texture description is composed of a texture dataset of the target substation. When texture mapping is carried out on the current functional unit structure, corresponding texture pictures are called by calling data stored in a texture data set, namely a three-level storage directory of target textures in a facility equipment texture library, and the texture mapping technology is adopted to map the current functional unit structure. And (3) finishing mapping on the physical geometric framework of the civil engineering facility of the transformer substation and each electrical device by using the texture description functional unit structure, endowing textures to the digital twin body of the transformer substation, and realizing three-dimensional modeling of the digital twin body of the transformer substation.
And S3.3, constructing a working condition description. And reading the working condition data set of the target transformer substation in the step S2.4, and establishing the working condition description of the target transformer substation.
Further, step S4, invoking the civil engineering facility and the electrical equipment model library to quickly generate the digital twin of the target substation according to the description file of the digital twin of the target substation, specifically:
and S4.1, realizing three-dimensional display of the digital twin body of the target substation according to the coordinate description and the texture description. Describing a functional unit structure by using coordinates to construct a physical geometric framework of the transformer substation civil engineering facility and each electrical device; and the texture description function unit structure is utilized to endow textures for the transformer substation civil engineering facilities and each electrical device. Firstly, according to coordinate description, for the existing functional unit structure in the functional unit structure library, the specific position of the functional unit structure in the transformer substation digital twin body can be determined through translation and rotation; and for the functional unit structure which does not exist in the functional unit structure library, a new basic three-dimensional unit is constructed by the basic three-dimensional graph through translation, rotation and scaling, and then a target functional unit structure is formed by the plurality of basic three-dimensional units through translation, rotation and scaling, so that a physical geometric framework of the transformer substation digital twin body is constructed. Secondly, on the basis of a physical geometric framework, a texture mapping technology is adopted to map the structure of the current functional unit according to texture description, so that three-dimensional display of the digital twin body of the target transformer substation is achieved.
And S4.2, describing the functional unit structure by using the working condition to realize the real-time display of the running state of the transformer substation. And displaying the working condition data of the key functional unit structure acquired by each monitoring terminal by using a data visualization technology according to the working condition description, monitoring the running state of the target transformer substation in real time, and providing an auxiliary decision basis for intelligent operation and maintenance of the transformer substation.
The method comprises the steps of constructing a basic three-dimensional graph library of a digital twin body of a transformer substation according to a topological principle; transforming the basic three-dimensional graph to form a basic three-dimensional unit to construct a basic three-dimensional unit library; the method comprises the steps of splitting a civil engineering facility of the transformer substation and each electrical device into functional unit structures, wherein each functional unit structure is composed of a plurality of basic three-dimensional units so as to realize the multiplexing of three-dimensional models; describing a functional unit structure by using coordinates to construct a physical geometric framework of the transformer substation civil engineering facility and each electrical device; the texture description function unit structure is utilized to endow the transformer substation civil engineering facility and each electrical device with textures; and describing the functional unit structure by using the working condition to realize the real-time display of the running state of the transformer substation. According to the technical means, the digital twin body of the transformer substation is quickly constructed.
Compared with the prior art, the rapid construction method of the digital twin body of the transformer substation has the following beneficial effects:
1. according to the method, the civil engineering facility of the transformer substation and the electrical equipment are split into a plurality of functional unit structures according to functions, the functional unit structures are constructed by a plurality of basic three-dimensional units, and the basic three-dimensional units are generated by basic three-dimensional graphs through rotation, translation and scaling, so that the multiplexing of models is realized, and the modeling efficiency is improved.
2. The method describes a functional unit structure by using coordinates to construct a physical geometric framework of a transformer substation civil engineering facility and each electrical device; the texture description function unit structure is utilized to endow the transformer substation civil engineering facility and each electrical device with textures; and describing the functional unit structure by using the working condition to realize the real-time display of the running state of the transformer substation. By establishing the description files of the civil engineering facilities and the electrical equipment, the digital twin body of the transformer substation can be described by adopting a concise description file. And calling a civil engineering facility and an electrical equipment model library to realize the rapid construction of the digital twin body of the transformer substation according to the description file.
Drawings
Fig. 1 is an overall implementation flow chart of the rapid construction method of the digital twin of the transformer substation.
Fig. 2 is a schematic structural and functional diagram of a three-dimensional model library of a digital twin civil engineering facility and electrical equipment of a transformer substation according to the present invention.
FIG. 3 is a schematic diagram of a process for establishing a digital twin working condition data set of a transformer substation according to the present invention.
Fig. 4 is a schematic diagram of a short message structure of the digital twin working condition data of the transformer substation.
Fig. 5 is a schematic diagram of a description file structure of a digital twin body of a substation according to the present invention.
Detailed Description
The present invention will be further described in detail with reference to the drawings and specific embodiments to facilitate understanding of the technical solutions of the present invention. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a method for quickly constructing a digital twin body of a transformer substation, the overall implementation flow is shown in fig. 1, and the method specifically comprises the following steps:
and S1, establishing a three-dimensional model library of civil facilities and electrical equipment of the transformer substation digital twin body, wherein the three-dimensional model library comprises 5 sub-libraries including a basic three-dimensional graphic library, a basic three-dimensional unit library, a functional unit structure library, a spatial position library and a facility equipment texture library.
Further, a schematic structural and functional diagram of the three-dimensional model library of the civil engineering facility and the electrical equipment in step S1 is shown in fig. 2, the three-dimensional model library of the civil engineering facility and the electrical equipment stores basic three-dimensional graphs required for constructing the digital twin of the substation, and basic three-dimensional units and functional unit structures facing the civil engineering facility of the substation and each electrical equipment, and is mainly used for assisting in rapid three-dimensional modeling of the digital twin of the substation. When a transformer substation digital twin body is constructed, if a civil engineering facility and an electrical equipment three-dimensional model library contain required functional unit structures, the functional unit structures can be directly called. If the required functional unit structure cannot be searched in the three-dimensional model base of the civil engineering facility and the electrical equipment, the basic three-dimensional unit facing the civil engineering facility of the transformer substation and each electrical equipment is constructed by the basic three-dimensional graph, and then the target functional unit structure is constructed by the plurality of basic three-dimensional units. And adding the newly constructed target function unit structure into a three-dimensional model library of the civil engineering facility and the electrical equipment so as to facilitate quick modeling when the same or similar function unit structures are reused.
Further, the three-dimensional model library of the civil engineering facility and the electrical equipment described in the step S1 includes 5 sub-libraries of a basic three-dimensional graphic library, a basic three-dimensional unit library, a functional unit structure library, a spatial location library and a facility equipment texture library. The basic three-dimensional graph library is used for storing the most basic three-dimensional graph, is constructed according to the topological principle, and at least comprises 4 basic three-dimensional graphs of a prism, a cylinder, a sphere and a torus. The edges, heights and radii of the basic three-dimensional figure comprise: the edge length of the prism, the radius and height of the bottom surface circle of the cylinder, the radius of the sphere, the distance from the center point of the circular ring body to the center point of the circular tube and the radius of the circular tube. The basic three-dimensional unit library is used for storing basic three-dimensional units generated by coordinate transformation of basic three-dimensional graphs. For example, the cone and the truncated cone can be generated by a cylinder through coordinate transformation; ellipsoids can be generated from spheres through coordinate transformation. Therefore, various basic three-dimensional units for building three-dimensional models of the transformer substation civil engineering facility and each electrical device can be generated by using the basic three-dimensional graphs, so that the multiplexing of the three-dimensional models is realized.
Further, the functional unit structure library in step S1 is used to store functional unit structures formed by disassembling the substation civil engineering facility and each electrical device according to functions, and each functional unit structure is composed of a plurality of basic three-dimensional units. The functional unit structure library is stored in three levels: the first level is civil engineering facilities and electrical equipment; the second level is civil engineering facility number and electrical equipment model; the third level is a functional unit structure. Through the three-level storage directory, the functional unit structure in the functional unit structure library can be quickly searched. The space position library is used for storing the corresponding coordinates of the three-dimensional graphs in the basic three-dimensional graph library, the basic three-dimensional unit library and the functional unit structure library in a world coordinate system. The facility equipment texture library is used for storing texture pictures of the civil engineering facilities of the transformer substation and the functional unit structures of each electrical equipment, and three-level storage is adopted: the first level is civil engineering facilities and electrical equipment; the second level is civil engineering facility number and electrical equipment model; the third level is a functional unit structure. Through the three-level storage directory, texture pictures of the transformer substation civil engineering facilities and the functional unit structures of the electrical equipment in the facility equipment texture library can be quickly retrieved.
S2, according to a target transformer substation design drawing, splitting the transformer substation civil engineering facilities and each electrical device into functional unit structures, and acquiring a data set of each functional unit structure of the target transformer substation, wherein the data set comprises 3 data subsets including a coordinate data set, a texture data set and a working condition data set, and the method specifically comprises the following steps:
and S2.1, according to a design drawing of the target transformer substation, dividing the civil engineering facility and each electrical device into functional unit structures according to functions.
And S2.2, importing the CAD design drawing of the transformer substation into graphic processing software, and quickly extracting the spatial position coordinates of the civil engineering facility and each electrical device. And classifying the coordinates according to the functional unit structures, and then storing the coordinates of each functional unit structure by adopting a three-level storage rule, thereby establishing a coordinate data set of the target transformer substation.
S2.3, retrieving a three-level storage directory of the facility equipment texture library, if the texture of the current functional unit structure is contained, not acquiring a texture picture, and storing the three-level storage directory of the target texture in the facility equipment texture library in a texture data set; and if the target texture is not retrieved, acquiring a texture picture of the current functional unit structure, storing the texture picture into the facility equipment texture library, and storing a three-level storage directory of the target texture in the facility equipment texture library in the texture data set. And storing the texture data by adopting a three-level storage rule, thereby establishing a texture data set of the target substation.
S2.4, a schematic flow chart of the working condition data set building is shown in figure 3. The method is characterized in that advanced sensors and monitoring terminals are installed aiming at key function unit structures of electrical equipment, communication ports of the monitoring terminals are converged to data concentrators, and the data concentrators are connected to a control center through communication links. And the control center collects the working condition data of the key function unit structure collected by each monitoring terminal in an inquiry-response mode. The working condition data is sent in the form of a short message, and the structure of the short message is shown in fig. 4 and comprises a frame header, a receiving address, a sending address, a message type, a data length, data content, a check code and a frame tail. And the working condition data is stored by adopting the three-level storage rule, so that a working condition data set of the target transformer substation is established.
And S3, constructing a description file of the target substation digital twin body by using a civil engineering facility and electrical equipment three-dimensional model library of the substation digital twin body and a data set of each functional unit structure of the target substation. The description file structure is shown in fig. 5 and includes coordinate description, texture description and condition description. Step S3 specifically includes:
and S3.1, constructing coordinate description. Firstly, the coordinate system of the target substation CAD design drawing in the step S2 is converted into the world coordinate system of the spatial location library in the step S1 through coordinate system conversion, and a coordinate system conversion matrix is calculated. And multiplying the coordinate data set in the step S2 by a coordinate system transformation matrix to obtain a coordinate data set of the target substation civil engineering facility and each electrical equipment functional unit structure in a world coordinate system. Then, the functional unit structure library is retrieved according to the three-level storage directory of the coordinate data set. If the functional unit structure library comprises the current functional unit structure, the specific position of the current functional unit structure in the transformer substation digital twin body can be determined through translation and rotation, and a coordinate transformation matrix for realizing translation and rotation and a three-level storage directory of the current functional unit structure in the spatial position library are recorded. If the current function unit structure can not be searched in the function unit structure library, a new basic three-dimensional unit is constructed by the basic three-dimensional graphics in the basic three-dimensional graphics library through translation, rotation and scaling, and then the current function unit structure is formed by the plurality of basic three-dimensional units through translation, rotation and scaling. Functional unit structures are added to the electrical equipment model base to facilitate rapid modeling when the same or similar functional unit structures are reused. And recording a coordinate transformation matrix for realizing translation, rotation and scaling and a three-level storage directory of the current functional unit structure in the spatial position library, thereby establishing the coordinate description. Through the steps, the physical geometric framework of the substation digital twin body is quickly constructed according to the coordinate description.
And S3.2, constructing texture description. The texture description is composed of a texture dataset of the target substation. When texture mapping is carried out on the current functional unit structure, corresponding texture pictures are called by calling data stored in a texture data set, namely a three-level storage directory of target textures in a facility equipment texture library, and the texture mapping technology is adopted to map the current functional unit structure. And (3) finishing mapping on the physical geometric framework of the civil engineering facility of the transformer substation and each electrical device by using the texture description functional unit structure, endowing textures to the digital twin body of the transformer substation, and realizing three-dimensional modeling of the digital twin body of the transformer substation.
And S3.3, constructing a working condition description. And reading the working condition data set of the target transformer substation in the step S2.4, and establishing the working condition description of the target transformer substation.
S4, calling a civil engineering facility and an electrical equipment model library to quickly generate the digital twin of the target substation according to the description file of the digital twin of the target substation, and specifically comprising the following steps:
and S4.1, realizing three-dimensional display of the digital twin body of the target substation according to the coordinate description and the texture description. Describing a functional unit structure by using coordinates to construct a physical geometric framework of the transformer substation civil engineering facility and each electrical device; and the texture description function unit structure is utilized to endow textures for the transformer substation civil engineering facilities and each electrical device. Firstly, according to coordinate description, for the existing functional unit structure in the functional unit structure library, the specific position of the functional unit structure in the transformer substation digital twin body can be determined through translation and rotation; and for the functional unit structure which does not exist in the functional unit structure library, a new basic three-dimensional unit is constructed by the basic three-dimensional graph through translation, rotation and scaling, and then a target functional unit structure is formed by the plurality of basic three-dimensional units through translation, rotation and scaling, so that a physical geometric framework of the transformer substation digital twin body is constructed. Secondly, on the basis of a physical geometric framework, a texture mapping technology is adopted to map the structure of the current functional unit according to texture description, so that three-dimensional display of the digital twin body of the target transformer substation is achieved.
And S4.2, describing the functional unit structure by using the working condition to realize the real-time display of the running state of the transformer substation. And displaying the working condition data of the key functional unit structure acquired by each monitoring terminal by using a data visualization technology according to the working condition description, monitoring the running state of the target transformer substation in real time, and providing an auxiliary decision basis for intelligent operation and maintenance of the transformer substation.
The technical scheme of the invention is illustrated by taking a digital twin construction process of an SZ11-240000/220kV three-phase oil-immersed power transformer as an example.
(1) And splitting the transformer into functional unit structures according to functions according to a design drawing of a target transformer substation. The transformer is divided into three stages, so that the structures of all functional units are convenient to retrieve. The transformer is arranged at the first level, the equipment model SZ11-100000/220 is arranged at the second level, the transformer is disassembled according to functions to form each functional unit structure, and the three classes comprise: the transformer oil tank, the low-voltage winding, the high-voltage winding, the conservator, the low-voltage bushing, the high-voltage bushing, the oil level gauge, the moisture absorber, the explosion-proof pipe, the signal thermometer, the tap switch, the gas signal relay and the like.
(2) And collecting a coordinate data set of each functional unit structure of the transformer. And importing the CAD design drawing of the transformer substation into graphic processing software, and quickly extracting the space position coordinates of the transformer. And (3) classifying the coordinates according to the functional unit structures in the step (1), and then storing the coordinates of each functional unit structure by adopting the three-level storage rule, thereby establishing a coordinate data set of the target substation.
(3) And acquiring texture data sets of the structures of all functional units of the transformer. Retrieving a three-level storage directory of a facility equipment texture library, if the texture of the current functional unit structure is contained, not acquiring a texture picture, and storing the three-level storage directory of the target texture in the facility equipment texture library in a texture data set; and if the target texture is not retrieved, acquiring a texture picture of the current functional unit structure, storing the texture picture into the facility equipment texture library, and storing a three-level storage directory of the target texture in the facility equipment texture library in the texture data set. And storing the texture data by adopting a three-level storage rule, thereby establishing a texture data set of the target substation.
(4) And collecting working condition data sets of the structures of all the functional units of the transformer. The method is characterized in that advanced sensors and monitoring terminals are installed aiming at key function unit structures of the transformer, communication ports of the monitoring terminals are converged to data concentrators, and the data concentrators are connected to a control center through communication links. And the control center collects the working condition data of the key function unit structure collected by each monitoring terminal in an inquiry-response mode. The working condition data can represent the current operating condition of the transformer and comprise remote signaling data, remote measuring data and environment monitoring data. And the working condition data is stored by adopting the three-level storage rule, so that a working condition data set of the target transformer substation is established.
(5) A coordinate description of the transformer is constructed. And constructing a description file of the digital twin body of the target transformer substation by using a civil engineering facility and electrical equipment three-dimensional model library of the digital twin body of the transformer substation and a data set of each functional unit structure of the transformer. Firstly, converting the coordinate system of the CAD design drawing of the target transformer substation in the step (2) into a world coordinate system of the space position library through coordinate system conversion, and calculating a coordinate system conversion matrix. And (3) multiplying the coordinate data set in the step (2) by a coordinate system transformation matrix to obtain a coordinate data set of the transformer functional unit structure in a world coordinate system. And then retrieving the functional unit structure library according to a three-level storage catalog of the transformer coordinate data set. If the current functional unit structure is contained, the specific position of the functional unit structure in the transformer substation digital twin body can be determined through translation and rotation, and a coordinate transformation matrix for realizing translation and rotation and a three-level storage directory of the current functional unit structure in a space position library are recorded. If the current functional unit structure cannot be searched in the functional unit structure library, constructing a basic unit facing the transformer by translating, rotating and zooming the basic three-dimensional graph in the basic graph library, and then forming the current functional unit structure by translating, rotating and zooming the plurality of basic units. Recording a coordinate transformation matrix for realizing translation, rotation and scaling and the three-level storage directory of the current functional unit structure in the spatial position library, thereby establishing coordinate description and quickly constructing a physical geometric framework of the transformer digital twin body.
(6) A texture description of the transformer is constructed. And (4) the texture description is formed by the texture data set of the target substation in the step (3). When texture mapping is carried out on the current functional unit structure, a three-level storage directory of a texture data set storage target texture in a facility equipment texture library is called, a corresponding texture picture is called, and texture mapping technology is adopted to map the current functional unit structure. The texture is given on the basis of the physical geometric framework of the transformer digital twin body, and the three-dimensional modeling of the transformer digital twin body is realized.
(7) And constructing the working condition description of the transformer. And (4) reading the working condition data set of the transformer in the step (4) and establishing the working condition description of the transformer. The operating condition description comprises the following fields: a telemetry data field, and an environmental monitoring field. The fields include the following:
(a) remote signaling data field: namely transformer running state signals including switch position signals and protection signals.
(b) Telemetry data field: i.e. electrical parameter measurements including load current, output voltage of the transformer.
(c) An environment monitoring field: oil level, oil color, oil temperature of the transformer; whether oil is leaked or not; the cleanliness of the porcelain bushing; the color change degree of the silica gel in the moisture absorber; the operation sound of the transformer; and (5) monitoring gas.
(8) And calling a basic three-dimensional graphic library to quickly generate the digital twin body of the transformer according to the description file. And describing the functional unit structure by using coordinates to construct a physical geometric framework of the transformer digital twin body. And describing the functional unit structure by using textures, and endowing textures to the digital twin body of the transformer. And the operating condition description function unit structure is utilized, and the electrical quantity and non-electrical quantity data collected by each monitoring terminal are displayed by adopting a visualization technology, so that the operating state of the transformer is monitored in real time. For example, monitoring whether the load current is within a rated range; whether the running voltage of the transformer is normal or not; whether the oil level, the oil color and the oil temperature exceed allowable values; whether oil leakage phenomenon exists or not; whether the porcelain bushing is clean or not and whether cracks, damages, stains and discharge phenomena exist or not; whether the color change degree of the silica gel in the moisture absorber is saturated or not; whether the running sound of the transformer is abnormal or not; whether air exists in the gas relay or not. The running state of the transformer is monitored in real time by means of the digital twin of the transformer, and an auxiliary decision basis is provided for intelligent operation and maintenance of the transformer.
Through the technical means, the digital twin body of the transformer is quickly constructed. By referring to the rapid construction method of the transformer digital twin, the digital twin of other transformer substation civil engineering facilities and electrical equipment can be rapidly constructed, so that the rapid construction of the transformer substation digital twin is completed.
Details not described in the present specification belong to the prior art known to those skilled in the art.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, such that any modification, equivalent replacement or improvement made within the spirit and principle of the present invention shall be included within the scope of the present invention.
Claims (7)
1. A rapid construction method of a transformer substation digital twin body is characterized by comprising the following steps:
s1, establishing a civil facility and electrical equipment three-dimensional model library of the transformer substation digital twin body, wherein the three-dimensional model library comprises 5 sub-libraries including a basic three-dimensional graphic library, a basic three-dimensional unit library, a functional unit structure library, a spatial position library and a facility equipment texture library;
s2, splitting the civil engineering facilities and the electrical equipment of the transformer substation into functional unit structures according to a target transformer substation design drawing, and collecting data sets of the functional unit structures of the target transformer substation, wherein the data sets comprise 3 data subsets including a coordinate data set, a texture data set and a working condition data set;
s3, constructing a description file of the digital twin body of the target substation by using a civil engineering facility and electrical equipment three-dimensional model library of the digital twin body of the substation and a data set of each functional unit structure of the target substation, wherein the description file comprises coordinate description, texture description and working condition description;
and S4, calling a civil engineering facility and an electrical equipment model library to quickly generate the digital twin of the target substation according to the description file of the digital twin of the target substation.
2. The rapid construction method of the substation digital twin according to claim 1, characterized in that: step S1, wherein the three-dimensional model library of the civil engineering facility and the electrical equipment stores basic three-dimensional graphs required for constructing the digital twin body of the transformer substation, basic three-dimensional units and functional unit structures facing the civil engineering facility of the transformer substation and the electrical equipment, and is used for assisting the rapid three-dimensional modeling of the digital twin body of the transformer substation, when the digital twin body of the transformer substation is constructed, if the three-dimensional model library of the civil engineering facility and the electrical equipment contains required functional unit structures, the basic three-dimensional units facing the civil engineering facility and the electrical equipment can be directly called, if the required functional unit structures cannot be searched in the three-dimensional model library of the civil engineering facility and the electrical equipment, the basic three-dimensional units are constructed by the basic three-dimensional graphs, a target functional unit structure is constructed by a plurality of basic three-dimensional units, and the newly constructed target functional unit structure is added into the three-dimensional model library of the civil engineering facility and the electrical equipment, to facilitate rapid modeling when the same or similar functional unit structures are reused.
3. The rapid construction method of the substation digital twin according to claim 1, characterized in that: the basic three-dimensional graph library is used for storing the most basic three-dimensional graph, is constructed according to the topological principle, and at least comprises 4 basic three-dimensional graphs, namely a prism, a cylinder, a sphere and a torus, wherein the edge length, the height and the radius of the basic three-dimensional graph are unit length; the basic three-dimensional unit library is used for storing basic three-dimensional units generated by coordinate transformation of basic three-dimensional graphs, and various basic three-dimensional units of three-dimensional models of transformer substation civil engineering facilities and various electrical equipment are generated and constructed by using the basic three-dimensional graphs so as to realize the multiplexing of the three-dimensional models.
4. The rapid construction method of the substation digital twin according to claim 1, characterized in that: the functional unit structure library in the step S1 is used for storing functional unit structures formed by disassembling the transformer substation civil engineering facility and each electrical device according to functions, and each functional unit structure is composed of a plurality of basic three-dimensional units; the functional unit structure library is stored in three levels: the first level is civil engineering facilities and electrical equipment; the second level is civil engineering facility number and electrical equipment model; the third level is a functional unit structure; through the three-level storage directory, the functional unit structure in the functional unit structure library can be quickly retrieved; the space position library is used for storing the corresponding coordinates of the three-dimensional graphs in the basic three-dimensional graph library, the basic three-dimensional unit library and the functional unit structure library in a world coordinate system; the facility equipment texture library is used for storing texture pictures of the civil engineering facilities of the transformer substation and the functional unit structures of each electrical equipment, and three-level storage is adopted: the first level is civil engineering facilities and electrical equipment; the second level is civil engineering facility number and electrical equipment model; the third level is a functional unit structure; through the three-level storage directory, texture pictures of the transformer substation civil engineering facilities and the functional unit structures of the electrical equipment in the facility equipment texture library can be quickly retrieved.
5. The method for quickly constructing the digital twin body of the substation according to claim 1, wherein step S2 "according to a target substation design drawing, splitting a civil engineering facility of the substation and each electrical device into functional unit structures, and acquiring a data set of each functional unit structure of the target substation, wherein the data set includes a coordinate data set, a texture data set, and 3 data subsets of a working condition data set" includes the specific steps of:
s2.1, according to a design drawing of a target transformer substation, dividing the civil engineering facility and each electrical device into functional unit structures according to functions;
s2.2, importing the CAD design drawing of the transformer substation into graphic processing software, quickly extracting the space position coordinates of the civil engineering facility and each electrical device, classifying the coordinates according to the functional unit structures, and storing the coordinates of each functional unit structure by adopting the three-level storage rule, thereby establishing a coordinate data set of the target transformer substation;
s2.3, retrieving a three-level storage directory of the facility equipment texture library, if the texture of the current functional unit structure is contained, not acquiring a texture picture, and storing the three-level storage directory of the target texture in the facility equipment texture library in a texture data set; if the target texture is not retrieved, acquiring a texture picture of the current functional unit structure, storing the texture picture into the facility equipment texture library, and storing a three-level storage directory of the target texture in the facility equipment texture library in the texture data set; storing the texture data by adopting a three-level storage rule, thereby establishing a texture data set of the target transformer substation;
s2.4, installing advanced sensors and monitoring terminals aiming at key function unit structures of the electrical equipment, wherein communication ports of the monitoring terminals are converged to data concentrators, and the data concentrators are connected to a control center through communication links; the control center collects working condition data of the key function unit structure collected by each monitoring terminal in an inquiry-response mode; and the working condition data are stored by adopting a three-level storage rule, so that a working condition data set of the target transformer substation is established.
6. The method for rapidly constructing the substation digital twin body according to claim 1, wherein step S3 "constructs a description file of the target substation digital twin body by using a three-dimensional model library of civil facilities and electrical equipment of the substation digital twin body and a data set of each functional unit structure of the target substation, wherein the description file includes coordinate description, texture description and working condition description" and includes the specific steps of:
s3.1, constructing coordinate description; firstly, converting the coordinate system of the CAD design drawing of the target transformer substation in the step S2 into the world coordinate system of the spatial position library in the step S1 through coordinate system conversion, and calculating a coordinate system conversion matrix; multiplying the coordinate data set in the step S2 by a coordinate system transformation matrix to obtain a coordinate data set of the target transformer substation civil engineering facility and each electrical equipment functional unit structure in a world coordinate system; then, searching a functional unit structure library according to a three-level storage catalog of the coordinate data set; if the functional unit structure library comprises the current functional unit structure, the specific position of the current functional unit structure in the transformer substation digital twin body can be determined through translation and rotation, and a coordinate transformation matrix for realizing translation and rotation and a three-level storage directory of the current functional unit structure in the spatial position library are recorded; if the current functional unit structure cannot be searched in the functional unit structure library, a new basic three-dimensional unit is constructed by the basic three-dimensional graphics in the basic three-dimensional graphics library through translation, rotation and scaling, and then the current functional unit structure is formed by the plurality of basic three-dimensional units through translation, rotation and scaling; adding the functional unit structure to an electrical equipment model library so as to facilitate rapid modeling when the same or similar functional unit structure is reused; recording a coordinate transformation matrix for realizing translation, rotation and scaling and a three-level storage directory of the current functional unit structure in a spatial position library, thereby establishing coordinate description; through the steps, a physical geometric framework of the transformer substation digital twin body is quickly constructed according to the coordinate description;
s3.2, constructing texture description; the texture description is formed by a texture data set of the target substation; when texture mapping is carried out on the current functional unit structure, corresponding texture pictures are called by calling data stored in a texture data set, namely a three-level storage directory of target textures in a texture library of facility equipment, and the texture mapping technology is adopted to map the current functional unit structure; the texture description function unit structure is utilized to complete mapping on a physical geometric framework of a civil engineering facility of the transformer substation and each electrical device, and textures are given to the digital twin of the transformer substation, so that three-dimensional modeling of the digital twin of the transformer substation is realized;
s3.3, constructing a working condition description; and reading the working condition data set of the target transformer substation, and establishing the working condition description of the target transformer substation.
7. The method for rapidly constructing the substation digital twin according to claim 1, wherein step S4 "calls a civil engineering facility and an electrical equipment model library to rapidly generate the digital twin of the target substation according to the description file of the target substation digital twin" specifically includes:
s4.1, realizing three-dimensional display of the digital twin body of the target transformer substation according to coordinate description and texture description; describing a functional unit structure by using coordinates to construct a physical geometric framework of the transformer substation civil engineering facility and each electrical device; the texture description function unit structure is utilized to endow the transformer substation civil engineering facility and each electrical device with textures; firstly, according to coordinate description, for the existing functional unit structure in the functional unit structure library, the specific position of the functional unit structure in the transformer substation digital twin body can be determined through translation and rotation; for a functional unit structure which does not exist in the functional unit structure library, a new basic three-dimensional unit is constructed by a basic three-dimensional graph through translation, rotation and scaling, and then a target functional unit structure is formed by a plurality of basic three-dimensional units through translation, rotation and scaling, so that a physical geometric framework of the transformer substation digital twin body is constructed; secondly, on the basis of a physical geometric framework, a texture mapping technology is adopted to map the structure of the current functional unit according to texture description, so that three-dimensional display of the digital twin body of the target transformer substation is realized;
s4.2, describing the functional unit structure by using the working condition to realize real-time display of the running state of the transformer substation; and displaying the working condition data of the key functional unit structure by using a data visualization technology according to the working condition description, monitoring the running state of the target transformer substation in real time, and providing an auxiliary decision basis for intelligent operation and maintenance of the transformer substation.
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