Transformer substation secondary equipment loop defect positioning method and device

Abstract

The invention discloses a transformer substation secondary equipment loop defect positioning method and device which are used for solving the technical problem that the positioning effect of the secondary equipment loop defect is not ideal due to the existing transformer substation secondary equipment loop defect positioning technology. The method comprises the following steps: acquiring a substation configuration description file, a substation digital design description file and secondary equipment drawing image data; constructing a three-dimensional model according to the preset building information model, the substation digital design description file and the secondary equipment drawing image data; generating an identification mapping relation based on the substation configuration description file and the three-dimensional model; based on a preset data communication connection condition, determining substation operation patrol diagnosis data; performing loop defect diagnosis on the operation patrol diagnosis data of the transformer substation, and generating a port defect range; and performing visual positioning on the port defect range and the identifier mapping relation to generate a three-dimensional secondary equipment loop defect positioning result.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, and in particular to a method and device for locating defects in a secondary equipment circuit of a transformer substation. Background Art

[0002] A substation is a collection of equipment that is used to cut off or connect, change or adjust voltage. In the power system, a substation is a gathering point for power transmission and distribution. It is a power facility that transforms voltage, receives and distributes electric energy, controls the flow of electricity and adjusts voltage. It connects power grids of various voltage levels through its transformers.

[0003] However, with the expansion of the scale of the power grid and the improvement of its intelligence level, the continuous in-depth development of traditional substations towards smart substations has brought about an exponential increase in the types and number of secondary equipment. At the same time, the optical fiber loop (secondary loop) connecting the various devices is the core of the secondary equipment. Failures in the optical fiber loop often destroy or affect the normal operation of power production.

[0004] Most of the existing substation secondary equipment circuit defect positioning technologies are based on manual positioning of on-site secondary circuit defects. The quality of this positioning method depends to a large extent on the technical skills, sense of responsibility, working status, etc. of the inspectors. The experience of the inspectors is the key factor in determining whether the equipment circuit defects can be found quickly, resulting in unsatisfactory positioning results for secondary equipment circuit defects. Summary of the invention

[0005] The present invention provides a method and device for locating defects in a secondary equipment circuit of a transformer substation, which are used to solve the technical problem that the existing technology for locating defects in a secondary equipment circuit of a transformer substation leads to unsatisfactory locating effect of defects in the secondary equipment circuit.

[0006] A first aspect of the present invention provides a method for locating a defect in a secondary equipment circuit of a substation, comprising:

[0007] Obtain substation configuration description files, substation digital design description files and secondary equipment drawing image data;

[0008] Constructing a three-dimensional model according to the preset building information model, the digital design description file of the substation and the secondary equipment drawing image data;

[0009] Based on the substation configuration description file and the three-dimensional model, generating an identification mapping relationship;

[0010] Determine substation operation inspection diagnostic data based on preset data communication connection conditions;

[0011] Performing loop defect diagnosis on the substation operation inspection diagnosis data to generate a port defect range;

[0012] Visually locate the port defect range and the identification mapping relationship to generate a three-dimensional secondary equipment loop defect location result.

[0013] Optionally, the three-dimensional model includes a three-dimensional equipment scene model and a three-dimensional cable model; and constructing the three-dimensional model according to the preset building information model, the substation digital design description file and the secondary equipment drawing image data includes:

[0014] Using the preset building information model and the secondary equipment drawing image data to construct a three-dimensional equipment scene model;

[0015] Based on the substation digital design description file, determine the secondary equipment cabinet cable data;

[0016] A three-dimensional cable model is constructed based on the secondary equipment cabinet cable data.

[0017] Optionally, constructing a three-dimensional cable model according to the secondary equipment cabinet cable data includes:

[0018] Performing coordinate conversion on the cable data of the secondary equipment cabinet to generate three-dimensional coordinate data of the cable;

[0019] A three-dimensional cable model is constructed based on the three-dimensional coordinate data of the cable.

[0020] Optionally, the identifier mapping relationship includes a first identifier mapping relationship and a second identifier mapping relationship; and generating the identifier mapping relationship based on the substation configuration description file and the three-dimensional model includes:

[0021] Based on the secondary equipment model identity data in the substation configuration description file, construct a configuration file corresponding to the attribute;

[0022] Generate a first identification mapping relationship according to the attribute correspondence configuration file and the three-dimensional model;

[0023] Converting the secondary equipment model port data in the substation configuration description file to generate unique coding data;

[0024] The unique coding data is used as a second identification mapping relationship.

[0025] Optionally, the preset data communication connection conditions include the power system telecontrol communication protocol, the hypertext transfer protocol and the E file transfer mode of the forward and reverse isolation device; the substation operation inspection diagnosis data includes substation operation telesignaling and telemetry real-time data, substation equipment inspection data and substation equipment status assessment prediction data; the determination of the substation operation inspection diagnosis data based on the preset data communication connection conditions includes:

[0026] Based on the power system telecontrol communication protocol, determine the real-time data of substation operation telesignaling and telemetry;

[0027] Determine substation equipment inspection data based on the Hypertext Transfer Protocol;

[0028] Based on the E-file transmission method of the forward and reverse isolation devices, the substation equipment status assessment prediction data is determined.

[0029] Optionally, performing loop defect diagnosis on the substation operation inspection diagnostic data to generate a port defect range includes:

[0030] Performing data fusion on the substation operation telesignaling and telemetry real-time data, the substation equipment inspection data and the substation equipment status assessment and prediction data to generate loop status data; the loop status data includes multiple virtual loop states;

[0031] respectively determining whether the state of each virtual circuit is an abnormal state;

[0032] The virtual circuit corresponding to any virtual circuit state being in an abnormal state is regarded as an abnormal virtual circuit;

[0033] Using a virtual circuit that has an intersection with the abnormal virtual circuit as a comparison virtual circuit corresponding to the abnormal virtual circuit;

[0034] A port defect range is generated according to the physical port set corresponding to the abnormal virtual circuit and the physical port set associated with the comparison virtual circuit corresponding to the abnormal virtual circuit.

[0035] A second aspect of the present invention provides a substation secondary equipment circuit defect locating device, comprising:

[0036] An acquisition module is used to acquire substation configuration description files, substation digital design description files and secondary equipment drawing image data;

[0037] A construction module, used to construct a three-dimensional model according to a preset building information model, the digital design description file of the substation and the secondary equipment drawing image data;

[0038] A mapping module, used to generate an identification mapping relationship based on the substation configuration description file and the three-dimensional model;

[0039] A determination module, used to determine substation operation inspection diagnostic data based on preset data communication connection conditions;

[0040] A diagnostic module, used to perform loop defect diagnosis on the substation operation inspection diagnostic data and generate a port defect range;

[0041] A generation module is used to visually locate the port defect range and the identification mapping relationship to generate a three-dimensional secondary equipment loop defect positioning result.

[0042] A third aspect of the present invention provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the method for locating a defect in a substation secondary equipment circuit as described in any one of the above items.

[0043] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed, the steps of the method for locating a defect in a secondary equipment circuit of a substation as described in any one of the above items are implemented.

[0044] A fifth aspect of the present invention provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions, wherein when the program instructions are executed by a computer, the computer executes the steps of the method for locating defects in the circuit of secondary equipment in a substation as described in any one of the above items.

[0045] It can be seen from the above technical solutions that the present invention has the following advantages:

[0046] The above technical scheme of the present invention provides a method for locating defects in a secondary device circuit of a substation. First, a substation configuration description file, a substation digital design description file and secondary device drawing image data are obtained; then, a three-dimensional model is constructed according to a preset building information model, a substation digital design description file and secondary device drawing image data; an identification mapping relationship is generated based on the substation configuration description file and the three-dimensional model; based on the preset data communication connection conditions, substation operation inspection diagnosis data is determined; circuit defect diagnosis is performed on the substation operation inspection diagnosis data to generate a port defect range; finally, the port defect range and the identification mapping relationship are visually located to generate a three-dimensional secondary device circuit defect positioning result; based on the above scheme, the present invention is based on the substation digital design description file and the secondary device drawing image data, combined with the substation configuration description file and the preset building information model, to construct a model and generate an identification mapping relationship, and then generate a three-dimensional secondary device circuit defect positioning result according to the identification mapping relationship and the port defect range obtained through the circuit defect diagnosis. There is no need to manually locate the secondary circuit defects on site, which can reduce the dependence on the detection personnel, thereby improving the positioning effect of the secondary equipment circuit defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0048] Figure 1 A flowchart of the steps of a method for locating a defect in a secondary equipment circuit of a substation provided in the first embodiment of the present invention;

[0049] Figure 2 A logical association diagram of a method for locating defects in a secondary equipment circuit of a substation provided in the first embodiment of the present invention;

[0050] Figure 3 A schematic diagram of a flow chart of a method for locating defects in a secondary equipment circuit of a substation provided in the second embodiment of the present invention;

[0051] Figure 4 This is a structural block diagram of a substation secondary equipment circuit defect locating device provided in Embodiment 3 of the present invention. DETAILED DESCRIPTION

[0052] The embodiment of the present invention provides a method and device for locating defects in a secondary equipment circuit of a substation, which are used to solve the technical problem that the existing technology for locating defects in a secondary equipment circuit of a substation leads to unsatisfactory locating effect of defects in the secondary equipment circuit.

[0053] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] See also Figure 1 , Figure 1 A flowchart of the steps of a method for locating defects in a secondary equipment circuit of a substation provided in Embodiment 1 of the present invention.

[0055] The present invention provides a method for locating defects in a secondary equipment circuit of a substation, comprising:

[0056] Step 101: Obtain substation configuration description files, substation digital design description files, and secondary equipment drawing image data.

[0057] The substation digital design description file is a file used to fully describe the substation design related information during the substation digital design process (SDD file, substation digital design description file).

[0058] Secondary equipment drawing image data includes multi-source data such as substation equipment construction drawings, equipment structure drawings and equipment image data.

[0059] Step 102: construct a three-dimensional model based on the preset building information model, the substation digital design description file and the secondary equipment drawing image data.

[0060] The preset building information model is a BIM three-dimensional model (Building Information Modeling) used in the engineering construction phase.

[0061] The 3D model includes a 3D equipment scene model and a 3D cable model.

[0062] Specifically, step 102 may include the following sub-steps:

[0063] Step S21, using the preset building information model and secondary equipment drawing image data to construct a three-dimensional equipment scene model;

[0064] It should be noted that the 3D modeling of the present invention collects construction drawings, equipment structure drawings and equipment image data, constructs a digitized precise coordinate 3D scene, and generates a virtual scene that is 1:1 restored according to the actual substation. In addition, in the modeling process, the BIM 3D model (Building Information Modeling) used in the engineering construction stage is also combined. The model is a 3D model file generated by the engineering 3D design process, which includes the equipment, facilities, cabinets and buildings of the substation. The present invention utilizes the BIM model file generated by the engineering 3D design process, takes construction drawings, equipment structure drawings, images and other multi-source data as input, and improves and refines the BIM model. The 3D scene model generated after the modeling is integrated is the basis for the 3D visualization and defect location of secondary equipment.

[0065] Step S22: Determine the cable data of the secondary equipment cabinet based on the substation digital design description file;

[0066] The cable data of the secondary equipment cabinet includes the parameter information of each cable, the corresponding port, the distributed cable channel, and the turning point position in the middle of the cable.

[0067] It should be noted that based on the ID search of the cabinet in the SDD file, all the connection cable and optical cable records involved in the cabinet can be obtained (secondary equipment cabinet cable data). Specifically, based on the standardized substation digital design description file, the corresponding ports of the equipment directly connected cables, the distributed cable trenches, the inflection point position information in the middle of the cable route, etc., that is, the parameter information of each cable, the corresponding ports, the distributed cable trenches, and the inflection point position in the middle of the cable route are obtained.

[0068] Step S23: construct a three-dimensional cable model based on the cable data of the secondary equipment cabinet.

[0069] Further, step S23 may include the following sub-steps:

[0070] S231, coordinate conversion is performed on the cable data of the secondary equipment cabinet to generate three-dimensional coordinate data of the cable;

[0071] S232: construct a three-dimensional cable model based on the three-dimensional coordinate data of the cable.

[0072] The cable three-dimensional coordinate data includes the starting point and end point coordinates of the three-dimensional cable, spatial direction information, and inflection point coordinate information.

[0073] It should be noted that, based on the parameter information obtained for each cable, the corresponding ports, distributed cable channels, and the turning point position in the middle of the cable direction are used as parameter input for rapid reconstruction of the three-dimensional model, and the loop cable is automatically modeled parametrically; specifically, the parameter information obtained for each cable, the corresponding ports, distributed cable channels, and the turning point position in the middle of the cable direction are converted into the starting and ending point coordinates of the three-dimensional cable, the spatial direction information, and the turning point coordinate information, and a three-dimensional cable model is generated based on these coordinate information.

[0074] It is worth mentioning that in the application, the cable 3D model is automatically and dynamically reconstructed according to the automation equipment or loop corresponding to the business; according to the application type, the cable with defective corresponding port is rendered in the fault color for highlighting.

[0075] Step 103: Generate an identification mapping relationship based on the substation configuration description file and the three-dimensional model.

[0076] The substation configuration description file is a standardized model file of the substation SCD (Substation Configuration Description), which is a system configuration file of the entire smart substation, including secondary smart devices in the station, device process layer and bay layer information, and virtual circuit connection relationships between devices.

[0077] The 3D device scene model includes a 3D scene model, a 3D device model and a 3D plug-in model.

[0078] The identification mapping relationship includes a first identification mapping relationship and a second identification mapping relationship. The first identification mapping relationship is the three-dimensional model of the device and loop cable in the secondary panel cabinet, that is, the unique identification mapping relationship between the three-dimensional equipment model and the three-dimensional cable model and the substation SCD model file. The second identification mapping relationship is the unique identification associated with the mapping of the substation SCD model file and the three-dimensional model of the device plug-in in the secondary panel cabinet of the substation (three-dimensional plug-in model).

[0079] Specifically, step 103 may include the following sub-steps:

[0080] S31. Constructing a configuration file corresponding to an attribute based on the secondary equipment model identity data in the substation configuration description file;

[0081] S32, generating a first identification mapping relationship according to the attribute corresponding configuration file and the three-dimensional model;

[0082] The secondary device model identity data is the iedName of the secondary smart device.

[0083] The attribute correspondence configuration file is a configuration file for the attribute correspondence between the three-dimensional model of the device in the secondary panel cabinet of the substation and the unique identifier iedName in the SCD file.

[0084] It should be noted that in the SCD model file (substation configuration description file), each secondary intelligent device has an iedName as a unique identity, that is, the secondary device model identity data. This data further establishes an attribute correspondence configuration file between the three-dimensional model of the device in the secondary panel cabinet of the substation and the unique identifier iedName in the SCD file by standardizing the system division, group association and naming rules of the three-dimensional model. The attribute correspondence configuration file is then used to form a unique identification mapping relationship between the three-dimensional model of the device in the secondary panel cabinet and the substation SCD model file.

[0085] S33, converting the secondary equipment model port data in the substation configuration description file to generate unique coding data;

[0086] S34. Use the unique coding data as the second identification mapping relationship.

[0087] The secondary device model port data is the connection port number and connection port type attribute of the network node in the secondary intelligent device.

[0088] It should be noted that in the SCD model file (substation configuration description file), each IED device model (Intelligent Electronic Device), that is, the network node in the secondary intelligent device, has connection port number and connection port type attributes, which can be converted into unique coding information (unique coding data) as a unique identifier for mapping the substation SCD model file with the three-dimensional model of the device plug-in in the substation secondary panel cabinet (three-dimensional plug-in model).

[0089] Step 104: Determine substation operation inspection diagnosis data based on preset data communication connection conditions.

[0090] The preset data communication connection conditions include the power system telecontrol communication protocol, the hypertext transfer protocol and the E-file transmission mode of the forward and reverse isolation devices.

[0091] Substation operation inspection and diagnosis data includes substation operation telesignaling and telemetry real-time data, substation equipment inspection data and substation equipment status assessment and prediction data.

[0092] Specifically, step 104 may include the following sub-steps:

[0093] S41. Determine the real-time telesignaling and telemetry data of substation operation based on the power system telecontrol communication protocol;

[0094] It should be noted that based on the IEC104 standard specification (power system telecontrol communication protocol), the three-dimensional twin data service of the substation secondary equipment and the communication with the substation monitoring system are established to obtain the real-time "telesignaling" and "telemetering" data of the substation operation (real-time telesignaling and telemetering data of substation operation).

[0095] S42, determining substation equipment inspection data based on the hypertext transfer protocol;

[0096] It should be noted that the communication between the three-dimensional twin data service of substation secondary equipment and the substation intelligent inspection system is established based on the Http protocol (Hypertext Transfer Protocol) to obtain information and data on the inspection results of substation equipment (substation equipment inspection data).

[0097] S43. Determine substation equipment status assessment prediction data based on the E file transmission method of the forward and reverse isolation devices.

[0098] It should be noted that based on the E-file transmission method of the forward and reverse isolation device (E-file transmission method of the forward and reverse isolation device), the communication between the three-dimensional twin data service of the substation secondary equipment and the substation online monitoring system is established to obtain the result information and data of the substation equipment status evaluation and prediction (substation equipment status evaluation prediction data).

[0099] It is worth mentioning that the information and data obtained by data communication are analyzed and processed by data services and stored in the real-time and time series database of the substation digital twin platform backend. The obtained substation operation inspection diagnosis data and unique identification mapping relationship can drive the change of the three-dimensional model status and the change of the equipment auxiliary visualization two-dimensional status data.

[0100] Step 105: Perform loop defect diagnosis on the substation operation inspection diagnosis data to generate a port defect range.

[0101] It should be noted that an algorithm for locating defects and faults of equipment and links is implemented based on the fusion of real-time operating status of the device (real-time data of telesignaling and telemetry of substation operation), inspection results (substation equipment inspection data) and alarm diagnosis information (substation equipment status assessment prediction data). It is an algorithm for locating equipment and link faults based on the breadth-first search algorithm.

[0102] Specifically, step 105 may include the following sub-steps:

[0103] S51, performing data fusion on the substation operation telesignaling and telemetry real-time data, substation equipment inspection data and substation equipment status assessment and prediction data to generate loop status data; the loop status data includes multiple virtual loop states;

[0104] S52, respectively determine whether the state of each virtual circuit is an abnormal state;

[0105] S53, taking any virtual circuit corresponding to an abnormal state as an abnormal virtual circuit;

[0106] S54, taking a virtual circuit that has an intersection with the abnormal virtual circuit as a comparison virtual circuit corresponding to the abnormal virtual circuit;

[0107] S55 . Generate a port defect range according to the physical port set corresponding to the abnormal virtual circuit and the physical port set associated with the comparison virtual circuit corresponding to the abnormal virtual circuit.

[0108] It should be noted that each virtual circuit corresponding to an abnormal state of the virtual circuit is taken as an abnormal virtual circuit, and then all virtual circuits that have an intersection with the abnormal virtual circuit are taken as comparison virtual circuits corresponding to the abnormal virtual circuit. The physical port set corresponding to the abnormal virtual circuit and the physical port sets associated with all comparison virtual circuits corresponding to the abnormal virtual circuit are compared respectively. If the virtual circuit state of the comparison virtual circuit is an abnormal state, it indicates that both the physical port set corresponding to the comparison virtual circuit and the physical port set corresponding to the abnormal virtual circuit may have faults, and the two physical port sets are merged, and the merged physical port set is taken as the new physical port set corresponding to the abnormal virtual circuit. physical port set; if the virtual circuit state of the compared virtual circuit is normal, then compare the physical port set corresponding to the compared virtual circuit and the physical port set corresponding to the abnormal virtual circuit, remove the same port elements between the two sets in the physical port set corresponding to the abnormal virtual circuit, and use the physical port set after the removal operation as the new physical port set corresponding to the abnormal virtual circuit; continue to compare the physical port sets corresponding to other compared virtual circuits until the physical port set corresponding to the abnormal virtual circuit is compared with the physical port sets associated with all the corresponding compared virtual circuits, and use the physical port set finally output as the port defect range.

[0109] In order to better illustrate the process of loop defect diagnosis, the present invention shows four steps for specific description:

[0110] Step 1: Assume the virtual circuit L i A fault alarm occurs, that is, a virtual circuit L i If the virtual circuit state is abnormal, then find the physical circuit corresponding to the virtual circuit and get the set of physical ports involved as q mi = {q m ,...,q i}.

[0111] Step 2: Query the virtual circuit L k The port set involved is q nk = {q n ,...,q k}, the virtual circuit L k and virtual circuit L i There is an intersection, if the virtual circuit L k No fault alarm (ie virtual circuit L k The virtual circuit state is normal), through the virtual circuit L k and virtual circuit L i The physical port set corresponding to the intersection between them can determine the fault defect location range. Within, defined as q up, that is, the same port elements between the two sets are removed from the physical port set corresponding to the abnormal virtual circuit, and the physical port set q after the removal operation is completed is obtained up .

[0112] Step 3: Another virtual circuit L i The virtual circuit with intersection is L j , the physical port set involved is q ty ={q t ...,q y}, if the virtual circuit L j If there is no fault alarm, the scope can be further narrowed down to , if the virtual circuit L j When an alarm message appears, it can be determined that the virtual circuit L i The fault is caused by the fault point between them, that is, if the virtual circuit state of the comparison virtual circuit is an abnormal state, it means that both the physical port set corresponding to the comparison virtual circuit and the physical port set corresponding to the abnormal virtual circuit may have faults, then these two physical port sets are merged, and the merged physical port set is used as the new physical port set corresponding to the abnormal virtual circuit.

[0113] Step 4: Execute steps 1 to 3 in a loop, gradually shrinking the fault range until the fault range is minimized, that is, the physical port set corresponding to the abnormal virtual circuit is compared with the physical port set associated with all the corresponding comparison virtual circuits, and a unique faulty physical port set (port defect range) can be obtained.

[0114] Step 106: Visually locate the port defect range and the identification mapping relationship to generate a three-dimensional secondary device loop defect location result.

[0115] It should be noted that based on the generated unique identification mapping relationship (identification mapping relationship), the faulty port set (port defect range) is presented in the spatial position in the three-dimensional scene, and three-dimensional precise positioning is performed in a visual manner, thereby obtaining the three-dimensional secondary equipment circuit defect positioning result; by manually combining the result, defect handling measures are given in the three-dimensional twin application to guide on-site maintenance operations.

[0116] It is worth mentioning that highly immersive three-dimensional visualization methods include large-screen display, VR virtual reality immersive display and AR augmented reality combined display. This embodiment adopts an interactive large-screen display method. The sources of the real-time operating status of the device, patrol results and alarm diagnosis information are the substation monitoring system, the intelligent patrol system and the substation online monitoring system, respectively. The patrol of the substation secondary equipment by the intelligent patrol system is mainly carried out by deploying micro high-definition cameras in the secondary protection cabinet to obtain video and identify whether the terminal cable inside the cabinet is damaged, whether it is on fire, whether there are small animals, etc. to determine whether there are defects in the status of the secondary equipment; technical personnel can combine the patrol combination and the auxiliary guiding measures given by the defect handling suggestions in the alarm diagnosis information for defect handling measures.

[0117] For example, see Figure 2 , showing a logical association schematic diagram of the method for locating defects in a substation secondary equipment circuit provided in the first embodiment of the present invention. The overall logical framework is divided into three parts: three-dimensional scene model mapping, substation digital twin platform, and data acquisition; the three-dimensional scene model mapping specifically includes building a three-dimensional model and parsing the structure file based on multi-source data such as BIM models, construction drawings, equipment structure drawings, and equipment image data, combined with SCD model files, to obtain a unique identification mapping relationship; the substation digital twin platform and data acquisition specifically include: establishing communication between the substation secondary equipment three-dimensional twin data service and the substation monitoring system through the IEC104 standard protocol, Http protocol, and E file transmission method of the forward and reverse isolation device, and establishing Establish communication between the three-dimensional twin data service of substation secondary equipment and the intelligent inspection system of substation, establish communication between the three-dimensional twin data service of substation secondary equipment and the online monitoring system of substation, obtain the real-time data of "remote signaling" and "telemetry" of substation operation, information and data of substation equipment inspection results, and information and data of substation equipment status evaluation and prediction results; finally, according to the real-time data of "remote signaling" and "telemetry" of substation operation, information and data of substation equipment inspection results, information and data of substation equipment status evaluation and prediction results, and unique identification mapping relationship, complete real-time status data diagnosis, output three-dimensional defect results, complete three-dimensional positioning of automation equipment and loops, and then give defect handling suggestions for the three-dimensional defect results manually.

[0118] As a comparison of technical effects, we can refer to existing technologies. With the expansion of the scale of power grids and the improvement of their intelligence, the types and number of substation automation equipment are also increasing exponentially. At the same time, the optical fiber loops connecting the various devices are physically hidden and the logical relationship of the loops is not intuitive, which makes monitoring and diagnosis difficult. In this context, the safe operation of the power system puts higher requirements on the quality and efficiency of the operation and maintenance of the automation system. The secondary system loop design based on static plane graphics and the decentralized operation and maintenance mode based on manual labor are difficult to further improve the operation and maintenance quality and efficiency of secondary equipment. It is urgent to promote the optimization of secondary operation and maintenance modes through technologies such as digital twins and three-dimensional visualization, and strengthen the risk control of power grids and secondary operations.

[0119] With the expansion of the scale of power grid and the improvement of intelligence, the types and number of secondary equipment are also increasing exponentially. At the same time, the optical fiber loops connecting the devices are hidden in physical locations and the logical relationship of the loops is not intuitive, which makes monitoring and diagnosis difficult. The secondary system loop design at the substation site is still basically based on static plane graphics, and the decentralized operation and maintenance mode based on manual labor is difficult to further improve the contradiction between operation and maintenance quality and efficiency. It is urgent to solve the problems of loop visualization, loop status monitoring, defect type identification and defect location in the operation and maintenance of substation automation equipment and loops through digital twins, three-dimensional visualization and three-dimensional model rapid reconstruction technologies, promote the optimization of secondary operation and maintenance modes, and strengthen the risk control of power grids and secondary operations.

[0120] In order to achieve the above objectives, the present invention proposes a method for locating defects in the circuit of secondary equipment in a substation. Based on multi-source data information such as laser point cloud, oblique photography, and construction drawings of power grid equipment, combined with the BIM three-dimensional model delivered in the engineering design stage, a three-dimensional scene of digital precise coordinates of automation equipment is constructed. By standardizing the model naming rules and attribute correspondence, a unique identification mapping relationship with the substation SCD model file is formed, and a three-dimensional twin platform for substation secondary equipment is constructed. The actual operation data of the substation secondary equipment is accessed to achieve the consistency between the internal device status of the three-dimensional model secondary panel cabinet equipment and the actual substation operation status. The cause of the fault defect is inferred based on the breadth-first search algorithm, and the fault area is delineated. The defective automation equipment and circuit are accurately located in the physical space in the three-dimensional scene in a highly immersive visualization manner, thereby reducing the dependence on the detection personnel, and the technical personnel provide defect handling measures in combination with the positioning results to guide the on-site operation. The secondary operation and maintenance mode of the substation is optimized, and the intelligence and safety of the operation and maintenance of the secondary equipment of the substation are improved.

[0121] In an embodiment of the present invention, the present invention provides a method for locating defects in a secondary device circuit of a substation. First, a substation configuration description file, a substation digital design description file and secondary device drawing image data are obtained; then, a three-dimensional model is constructed according to a preset building information model, a substation digital design description file and secondary device drawing image data; an identification mapping relationship is generated based on the substation configuration description file and the three-dimensional model; based on the preset data communication connection conditions, substation operation inspection diagnosis data is determined; circuit defect diagnosis is performed on the substation operation inspection diagnosis data to generate a port defect range; finally, the port defect range and the identification mapping relationship are visually located to generate a three-dimensional secondary device circuit defect location result; based on the above scheme, the present invention is based on the substation digital design description file and the secondary device drawing image data, combined with the substation configuration description file and the preset building information model, to construct a model and generate an identification mapping relationship, and then generate a three-dimensional secondary device circuit defect location result according to the identification mapping relationship and the port defect range obtained through the circuit defect diagnosis. There is no need to manually locate the secondary circuit defects on site, which can reduce the dependence on the detection personnel, thereby improving the location effect of the secondary equipment circuit defects.

[0122] For better explanation, refer to Figure 3 , showing a schematic flow chart of a method for locating defects in a substation secondary equipment circuit provided in Embodiment 2 of the present invention. It should be noted that this embodiment only briefly describes the general process of the method for locating defects in a substation secondary equipment circuit, and the specific implementation process of each step can be understood by referring to the relevant content in the aforementioned embodiment, which will not be described here. It can be understood that the present invention does not limit this.

[0123] S1. Construction of precise coordinate parametric 3D scenes of substation automation equipment and loops, including: based on multi-source data information such as construction drawings, equipment structure drawings and equipment images of substation equipment, combined with the BIM 3D model used in the engineering construction phase, digital precise coordinate 3D scenes of substation static resources and automation equipment are constructed, and virtual scenes that are restored 1:1 according to the actual substation are generated. The 3D model rapid reconstruction technology is used to perform parametric automated modeling of loop cables, thereby completing the construction of the 3D model.

[0124] S2. Generate a unique identification mapping relationship between the three-dimensional model and the substation SCD model file, specifically including: based on the standardized model files such as the substation SCD, for the three-dimensional model interface attribute information of the devices in the substation panel cabinet and the status lights, terminal blocks, hard pressure plates and other components on the devices, generate a unique identification mapping relationship between the three-dimensional model and the substation SCD model file by standardizing the three-dimensional model naming rules and attribute correspondence.

[0125] S3. Develop three-dimensional twin data services for substation automation equipment and circuits, and access real-time operating data of substation automation equipment and circuit parameters, including: establishing data communication connections with substation monitoring, inspection and online monitoring systems based on standard protocols, Http protocols, E files and other methods, accessing real-time operating data and information of devices inside substation cabinets, and providing data support for real-time three-dimensional visualization display.

[0126] S4. Implement equipment and link defect and fault location algorithm, specifically including: based on data services, realize the real-time consistency between the internal device status of the 3D model cabinet equipment and the actual substation operation status, based on the fusion of real-time operation status, inspection results and alarm diagnosis information of the device, implement equipment and link defect and fault location algorithm, and display the spatial location information and operation information of the substation secondary equipment in a highly immersive 3D visualization manner.

[0127] S5. Accurately locate defects in the 3D scene and provide defect handling measures in the 3D twin application to guide on-site maintenance operations.

[0128] Among them, the present invention uses digital design model files such as SCD, combined with equipment design drawings and on-site equipment image data, to conduct in-depth analysis and identification, and obtain detailed information such as size, position, input, output, etc. required for equipment modeling, including terminals and loops. A parametric modeling method is used to establish a complete digital twin model of the automation system object, including a fine-grained three-dimensional terminal model and a three-dimensional model of cable loops at all levels. Through effective management of the model, unique identification and description configuration, and three-dimensional model configuration file format definition, a panoramic digital twin system model covering substation automation equipment information is constructed, filling the gap in the construction of a global digital twin model of the substation automation system, and supporting the development of subsequent business applications.

[0129] Furthermore, the present invention is based on digital twin technology to achieve full-factor collection and modeling of substation secondary equipment operation, inspection and monitoring data, so that it can perfectly match the actual equipment. Combined with the three-dimensional construction method of the BIM model, the digital twin model is optimized to improve accuracy and reliability, and support the accurate three-dimensional spatial position display of substation automation equipment and loops; a unique identification mapping between the three-dimensional model and the substation SCD model file is established to achieve consistency between the internal device status of the three-dimensional model cabinet equipment and the actual substation operation status, and to interactively display the substation equipment in a three-dimensional scene in a highly immersive visualization manner, thereby achieving accurate three-dimensional spatial positioning of defects. At the same time, based on the SDD file, the present invention obtains the parametric modeling information of the three-dimensional modeling of the cable as the parameter input for the rapid reconstruction of the three-dimensional model, and performs parametric automatic modeling of the loop cable, which solves the problem of visual presentation jamming caused by full modeling, focuses on business logic needs, and intuitively presents the cable loops related to defect positioning, so as to better serve the on-site operation and maintenance work.

[0130] See also Figure 4 , Figure 4 This is a structural block diagram of a substation secondary equipment circuit defect locating device provided in Embodiment 3 of the present invention.

[0131] The present invention provides a substation secondary equipment circuit defect locating device, comprising:

[0132] The acquisition module 401 is used to acquire the substation configuration description file, the substation digital design description file and the secondary equipment drawing image data;

[0133] A construction module 402 is used to construct a three-dimensional model based on a preset building information model, a substation digital design description file, and secondary equipment drawing image data;

[0134] A mapping module 403, used to generate an identification mapping relationship based on the substation configuration description file and the three-dimensional model;

[0135] A determination module 404, for determining substation operation inspection diagnostic data based on preset data communication connection conditions;

[0136] Diagnostic module 405, used to perform loop defect diagnosis on substation operation inspection diagnostic data and generate port defect range;

[0137] The generation module 406 is used to visually locate the port defect range and the identification mapping relationship, and generate a three-dimensional secondary device loop defect positioning result.

[0138] Furthermore, the three-dimensional model includes a three-dimensional device scene model and a three-dimensional cable model; the construction module 402 includes:

[0139] The first submodule is used to construct a three-dimensional equipment scene model using a preset building information model and secondary equipment drawing image data;

[0140] The second submodule is used to determine the cable data of the secondary equipment cabinet based on the substation digital design description file;

[0141] The third submodule is used to construct a three-dimensional cable model based on the cable data of the secondary equipment cabinet.

[0142] Furthermore, the third submodule is specifically used for:

[0143] Perform coordinate conversion on cable data of secondary equipment cabinets to generate three-dimensional coordinate data of cables;

[0144] Construct a three-dimensional cable model based on the three-dimensional coordinate data of the cable.

[0145] Furthermore, the identifier mapping relationship includes a first identifier mapping relationship and a second identifier mapping relationship; the mapping module 403 is specifically used to:

[0146] Based on the secondary equipment model identity data in the substation configuration description file, construct the attribute corresponding configuration file;

[0147] Generate a first identification mapping relationship according to the attribute corresponding configuration file and the three-dimensional model;

[0148] Transform the secondary equipment model port data in the substation configuration description file to generate unique coding data;

[0149] The uniquely encoded data is used as the second identification mapping relationship.

[0150] Further, the preset data communication connection conditions include the power system telecontrol communication protocol, the hypertext transfer protocol and the E file transmission mode of the forward and reverse isolation device; the substation operation inspection diagnosis data includes the substation operation telesignaling and telemetry real-time data, the substation equipment inspection data and the substation equipment status assessment prediction data; the determination module 404 is specifically used for:

[0151] Based on the power system telecontrol communication protocol, determine the real-time data of substation operation telesignaling and telemetry;

[0152] Determine substation equipment inspection data based on Hypertext Transfer Protocol;

[0153] Based on the E-file transmission method of the forward and reverse isolation devices, the substation equipment status assessment prediction data is determined.

[0154] Furthermore, the diagnosis module 405 is specifically used for:

[0155] The real-time data of telemetering and telemetering of substation operation, the inspection data of substation equipment and the evaluation and prediction data of substation equipment status are integrated to generate loop status data; the loop status data includes multiple virtual loop statuses;

[0156] Determine whether the state of each virtual circuit is an abnormal state;

[0157] The virtual circuit corresponding to any virtual circuit state being in an abnormal state is regarded as an abnormal virtual circuit;

[0158] The virtual circuit that has an intersection with the abnormal virtual circuit is used as a comparison virtual circuit corresponding to the abnormal virtual circuit;

[0159] A port defect range is generated according to a physical port set corresponding to the abnormal virtual circuit and a physical port set associated with the comparison virtual circuit corresponding to the abnormal virtual circuit.

[0160] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices, modules and sub-modules can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0161] An embodiment of the present invention further provides a computer device, including a memory and a processor, wherein a computer program is stored in the memory; when the computer program is executed by the processor, the processor executes the steps of the method for locating defects in a substation secondary equipment circuit as described in the first embodiment above.

[0162] An embodiment of the present invention further provides a computer-readable storage medium on which a computer program / instruction is stored. When the computer program / instruction is executed by a processor, the steps of the method for locating defects in a substation secondary equipment circuit are implemented as in the above-mentioned embodiment 1.

[0163] An embodiment of the present invention further provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the steps of the method for locating defects in a secondary equipment circuit of a substation as described in the first embodiment above.

[0164] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0165] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0166] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for locating defects in a secondary equipment circuit of a substation, characterized in that: include: Obtain substation configuration description files, substation digital design description files and secondary equipment drawing image data; Constructing a three-dimensional model according to the preset building information model, the digital design description file of the substation and the secondary equipment drawing image data; Based on the substation configuration description file and the three-dimensional model, generating an identification mapping relationship; Determine substation operation inspection diagnostic data based on preset data communication connection conditions; Performing loop defect diagnosis on the substation operation inspection diagnosis data to generate a port defect range; Visually locate the port defect range and the identification mapping relationship to generate a three-dimensional secondary equipment loop defect location result.

2. The method for locating defects in a secondary equipment circuit of a substation according to claim 1, characterized in that: The three-dimensional model includes a three-dimensional equipment scene model and a three-dimensional cable model; the three-dimensional model is constructed according to the preset building information model, the substation digital design description file and the secondary equipment drawing image data, including: Using the preset building information model and the secondary equipment drawing image data to construct a three-dimensional equipment scene model; Based on the substation digital design description file, determine the secondary equipment cabinet cable data; A three-dimensional cable model is constructed based on the secondary equipment cabinet cable data.

3. The method for locating defects in a secondary equipment circuit of a substation according to claim 2, characterized in that: The constructing of a three-dimensional cable model according to the secondary equipment cabinet cable data includes: Performing coordinate conversion on the cable data of the secondary equipment cabinet to generate three-dimensional coordinate data of the cable; A three-dimensional cable model is constructed based on the three-dimensional coordinate data of the cable.

4. The method for locating defects in a secondary equipment circuit of a substation according to claim 1, characterized in that: The identifier mapping relationship includes a first identifier mapping relationship and a second identifier mapping relationship; and the generating of the identifier mapping relationship based on the substation configuration description file and the three-dimensional model includes: Based on the secondary equipment model identity data in the substation configuration description file, construct a configuration file corresponding to the attribute; Generate a first identification mapping relationship according to the attribute correspondence configuration file and the three-dimensional model; Converting the secondary equipment model port data in the substation configuration description file to generate unique coding data; The unique coding data is used as a second identification mapping relationship.

5. The method for locating defects in a secondary equipment circuit of a substation according to claim 1, characterized in that: The preset data communication connection conditions include the power system telecontrol communication protocol, the hypertext transfer protocol and the E-file transmission mode of the forward and reverse isolation device; the substation operation inspection diagnosis data includes the substation operation telesignaling and telemetry real-time data, substation equipment inspection data and substation equipment status assessment prediction data; The step of determining the substation operation inspection diagnostic data based on the preset data communication connection conditions includes: Based on the power system telecontrol communication protocol, determine the real-time data of substation operation telesignaling and telemetry; Determine substation equipment inspection data based on the Hypertext Transfer Protocol; Based on the E-file transmission method of the forward and reverse isolation devices, the substation equipment status assessment prediction data is determined.

6. The method for locating defects in a secondary equipment circuit of a substation according to claim 4, characterized in that: The performing loop defect diagnosis on the substation operation inspection diagnosis data to generate a port defect range includes: Performing data fusion on the substation operation telesignaling and telemetry real-time data, the substation equipment inspection data and the substation equipment status assessment and prediction data to generate loop status data; the loop status data includes multiple virtual loop states; respectively determining whether the state of each virtual circuit is an abnormal state; The virtual circuit corresponding to any virtual circuit state being in an abnormal state is regarded as an abnormal virtual circuit; Using a virtual circuit that has an intersection with the abnormal virtual circuit as a comparison virtual circuit corresponding to the abnormal virtual circuit; A port defect range is generated according to the physical port set corresponding to the abnormal virtual circuit and the physical port set associated with the comparison virtual circuit corresponding to the abnormal virtual circuit.

7. A defect location device for a secondary equipment circuit in a substation, characterized in that: include: An acquisition module is used to acquire substation configuration description files, substation digital design description files and secondary equipment drawing image data; A construction module, used to construct a three-dimensional model according to a preset building information model, the digital design description file of the substation and the secondary equipment drawing image data; A mapping module, used to generate an identification mapping relationship based on the substation configuration description file and the three-dimensional model; A determination module, used to determine substation operation inspection diagnostic data based on preset data communication connection conditions; A diagnostic module, used to perform loop defect diagnosis on the substation operation inspection diagnostic data and generate a port defect range; A generation module is used to visually locate the port defect range and the identification mapping relationship to generate a three-dimensional secondary equipment loop defect positioning result.

8. A computer device, characterized in that: It comprises a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the method for locating defects in a circuit of secondary equipment of a substation as described in any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed, the method for locating defects in a circuit of secondary equipment in a substation as described in any one of claims 1 to 6 is implemented.

10. A computer program product, characterized in that The computer program product includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions, wherein when the program instructions are executed by a computer, the computer executes the substation secondary equipment circuit defect locating method as described in any one of claims 1-6.

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