Method for displaying photoelectric loop between secondary screen cabinets of transformer substation

Abstract

The invention relates to the technical field of transformer substation secondary systems, and discloses a method for displaying a photoelectric circuit between transformer substation secondary screen cabinets, which comprises the following steps of: 1, acquiring an SDD total station secondary circuit model file of a transformer substation secondary circuit; 2, analyzing the SDD total station secondary circuit model file, and constructing a screen cabinet cable connection diagram and a screen cabinet cable core connection diagram; 3, judging whether the screen cabinet cable connection diagram and the screen cabinet cable core connection diagram need to be updated or not, if so, returning to the step 1, and if not, executing the step 4; and step 4, outputting a screen cabinet cable connection diagram and a screen cabinet cable core connection diagram, indicating in a rectangular manner by taking a selected screen cabinet as a center on a page, and identifying screen cabinet information in or on or around a rectangular frame in a character manner, thereby realizing visual display between screen cabinets, and improving the display effect of the screen cabinets. The problem that traditional secondary circuit management depends on manual operation and is low in efficiency is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer substation secondary systems, and in particular to a method for displaying photoelectric circuits between secondary panels in a transformer substation. Background Art

[0002] The widespread adoption of intelligent and digital substations has placed new demands on traditional substation secondary circuit management and operation and maintenance methods. As a key component in building smart grids, smart substations utilize advanced, integrated, low-carbon, and environmentally friendly intelligent primary equipment, intelligent auxiliary equipment, and networked secondary equipment. They feature digital information, a networked communication platform, and standardized information sharing. However, existing substation secondary circuit management and operation and maintenance still face numerous challenges. Traditional secondary equipment maintenance relies primarily on manual operation, which is time-consuming. Furthermore, some smart substations use optical fiber instead of cables, resulting in non-intuitive and low-visualization secondary circuits. This makes it impossible to view the physical path of signal transmission, making it difficult to perform tasks such as signal tracing, fault location, and security measures.

[0003] Substation secondary circuits are presented as terminal block diagrams generated by the design institute. This solves the problem of describing the connection relationship between the current cabinet terminals and the remaining cabinet terminals. This is convenient for construction based on drawings, but it poses a significant challenge for circuit operation and maintenance. Because the associated cabinets and circuits are scattered across multiple drawings, circuit tracing is extremely inconvenient. Multiple drawings must be retrieved and pieced together to find the corresponding connection relationship, i.e., the circuit. This not only reduces the efficiency of secondary circuit tracing, operation, maintenance, and management, but also increases the difficulty of circuit modification.

[0004] Therefore, a new method for displaying substation secondary circuit connections is urgently needed. This method can intuitively and quickly display the cable and cable core connections between panels and cabinets, and fully display them on a single drawing. This will improve the efficiency of circuit construction, operation and maintenance, and management, and ensure the safe and stable operation of the power grid and substation. This method should be able to effectively solve the problems existing in existing technologies such as non-intuitive circuit display, scattered related information, and difficult modification, and improve the overall management level of substation secondary systems. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a method for displaying photoelectric circuits between secondary panels in a substation, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a method for displaying photoelectric circuits between secondary panels in a substation, the method comprising the following steps: Step 1: Obtain the SDD full-station secondary circuit model file of the substation secondary circuit; Step 2: parse the SDD full-station secondary circuit model file and construct the panel cabinet cable connection diagram and panel cabinet cable core connection diagram; Step 3: Determine whether the panel cabinet cable connection diagram and panel cabinet cable core connection diagram need to be updated. If so, return to step 1; otherwise, go to step 4. Step 4. Output the panel cabinet cable connection diagram and the panel cabinet cable core connection diagram.

[0007] Preferably, the step 1 comprises: Step 101: Acquire communication information through the communication model SCD file of the smart substation; Step 102: Parse the communication information in the SCD file and extract the GOOSE message and the MMS message; Step 103: Based on the parsing results of the GOOSE message and the MMS message, construct an SDD full-station secondary circuit model file that complies with the T / CEC 818-2023 specification.

[0008] Preferably, the step 2 comprises: Step 201: parse the SDD model file to obtain the cabinet name, number, installation location, cable type, and cable core quantity information; Step 202: Select the screen cabinet by using a rectangular frame, and mark the screen cabinet attribute information inside and outside the rectangular frame; Step 203: Arrange the cabinets connected to the central cabinet according to a preset layout, connect the cables with line segments to identify their relationships, and dynamically adjust the length of the line segments based on the physical distance between the cabinets. Step 204: Label the line segment with information including the cable number, function description, and specification parameters.

[0009] Preferably, the step 3 comprises: Step 301: Receive a modification request initiated by an operation and maintenance personnel via a mobile terminal, wherein the request includes a work order number and a hash value of the modification content; Step 302: Verify the biometric information and work order permissions of the operation and maintenance personnel. If the verification fails, terminate the process and generate an alarm log; Step 303: The modified content is verified by consensus through the blockchain smart contract. After the verification is passed, the connection diagram is updated and a new version identifier is generated.

[0010] Preferably, in step 302: The biometric verification includes multi-factor authentication of fingerprint, iris and dynamic work order QR code, and the verification process is locally processed through edge computing nodes to avoid uploading biometric data to the cloud.

[0011] Preferably, step 4 includes: Step 401: Use SVG vector graphics to display the cable connection diagram and the cable core connection diagram in layers on the same page, supporting zooming and layer switching; Step 402: Different colors are used to distinguish the connection relationship between the optical cable and the electrical cable, and the operating status is indicated by the dashed and solid lines; Step 403: Provide a custom interface to allow users to adjust the cabinet layout, cable marking style, and information display granularity.

[0012] Preferably, it also includes: Step 5: After updating the connection diagram, synchronize the modified data to the substation local server, cloud backup, and associated SCADA system via the TSN time-sensitive network protocol, and use CRC checksum to ensure data consistency.

[0013] Preferably, it also includes: Step 6: Train an LSTM neural network model based on historical operation and maintenance data to monitor the secondary circuit status in real time and predict fault risks. Mark high-risk panel cabinet locations and recommended maintenance paths in the form of a heat map in the graphical interface.

[0014] Preferably, in the cable connection diagram: Each cable label is associated with a hyperlink. Clicking it will jump to the display of the complete test report, maintenance record and real-time monitoring data curve of the cable.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By using a rectangle as the center of a selected panel on a page, and using text to identify the panel information within, on, or around the rectangle, a visual display of the panels is achieved, overcoming the inefficiency of traditional secondary circuit management, which relies on manual operation. 2. By arranging the cabinets connected to the central cabinet on four sides or both sides, and connecting them with lines to identify the cable connection between the two cabinets, and marking the cable number, description, function, specification and other information on the line segments, this system enables a direct display of the cable and cable core connection relationship between the cabinets, solving the problem of difficult circuit locating caused by the related cabinets and circuits being scattered across multiple drawings in the existing technology. 3. The panel cabinet cable connection diagram and panel cabinet cable core connection diagram of the present invention fully reflect all related panel cabinets and circuit information on a single drawing, eliminating the trouble of simultaneously flipping through multiple drawings and splicing them together, greatly improving the efficiency of circuit construction, operation, maintenance, and management; 4. The visualization display method of the present invention can flexibly adjust and optimize the connection relationship between panels and cabinets according to the actual needs of the substation, providing a visualization foundation for the intelligent management of the substation secondary circuit; 5. The method of the present invention is applicable not only to optical cable loops but also to optical fiber loops. It has strong versatility and practicality and can be widely used in the secondary loop management and operation and maintenance of various substations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0017] Figure 1 Flow chart of the method of the present invention. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1 A method for displaying a photoelectric circuit between secondary panels in a substation comprises the following steps: Step 1: Obtain the SDD full-station secondary circuit model file of the substation secondary circuit; Step 2: parse the SDD full-station secondary circuit model file and construct the panel cabinet cable connection diagram and panel cabinet cable core connection diagram; Step 3: Determine whether the panel cabinet cable connection diagram and panel cabinet cable core connection diagram need to be updated. If so, return to step 1; otherwise, go to step 4. Step 4: Output the panel cabinet cable connection diagram and panel cabinet cable core connection diagram; The step 1 comprises: Step 101: Acquire communication information through the communication model SCD file of the smart substation; Step 102: Parse the communication information in the SCD file and extract the GOOSE message and the MMS message; Step 103: Based on the parsing results of the GOOSE message and the MMS message, construct an SDD full-station secondary loop model file that complies with the T / CEC 818-2023 specification; The step 2 includes: Step 201: parse the SDD model file to obtain the cabinet name, number, installation location, cable type, and cable core quantity information; Step 202: Select the screen cabinet by using a rectangular frame, and mark the screen cabinet attribute information inside and outside the rectangular frame; Step 203: Arrange the cabinets connected to the central cabinet according to a preset layout, connect the cables with line segments to identify their relationships, and dynamically adjust the length of the line segments based on the physical distance between the cabinets. Step 204: label the line segment with information including the cable number, function description, and specification parameters; The step 3 includes: Step 301: Receive a modification request initiated by an operation and maintenance personnel via a mobile terminal, wherein the request includes a work order number and a hash value of the modification content; Step 302: Verify the biometric information and work order permissions of the operation and maintenance personnel. If the verification fails, terminate the process and generate an alarm log; Step 303: The modified content is verified by consensus through the blockchain smart contract. After verification, the connection diagram is updated and a new version identifier is generated; In step 302: The biometric verification includes multi-factor authentication of fingerprint, iris and dynamic work order QR code, and the verification process is processed locally through edge computing nodes to avoid uploading biometric data to the cloud; The step 4 comprises: Step 401: Use SVG vector graphics to display the cable connection diagram and the cable core connection diagram in layers on the same page, supporting zooming and layer switching; Step 402: Different colors are used to distinguish the connection relationship between the optical cable and the electrical cable, and the operating status is indicated by the dashed and solid lines; Step 403: Provide a custom interface to allow users to adjust the cabinet layout, cable marking style, and information display granularity; Also includes: Step 5: After updating the connection diagram, synchronize the modified data to the substation local server, cloud backup, and associated SCADA system via the TSN time-sensitive network protocol, and use CRC checksum to ensure data consistency. Also includes: Step 6: Train an LSTM neural network model based on historical operation and maintenance data to monitor the secondary circuit status in real time and predict fault risks. Mark high-risk cabinet locations and recommended maintenance paths in the form of a heat map in the graphical interface. In the cable connection diagram: Each cable label is associated with a hyperlink, which will jump to the display of the complete test report, maintenance record and real-time monitoring data curve of the cable after clicking; The execution of the blockchain smart contract includes: The modification operation content, personnel identity hash, timestamp and device status snapshot are written to the private chain of Hyperledger Fabric, and distributed node verification is completed within 3 seconds through the PBFT consensus mechanism. Example 1:

[0020] The present invention provides a method for displaying photoelectric circuits between secondary panels in a substation. The specific implementation steps are as follows: Step 1: Obtain the SDD full-station secondary circuit model file of the substation secondary circuit.

[0021] Step 101: Acquire communication information through the SCD file of the communication model of the smart substation, wherein the SCD file adopts the IEC61850 standard and includes the entire communication network structure and communication rules of the substation.

[0022] Step 102: parse the communication information in the SCD file and extract the GOOSE message and the MMS message. The GOOSE message is used to transmit the switching quantity information of the substation, and the MMS message is used to transmit the process quantity information of the substation.

[0023] Step 103: Construct an SDD full-station secondary circuit model file based on the analysis results. The SDD model file uses the T / CEC818-2023 "Modeling and Interaction Specifications for Relay Protection and Safety Automation Devices in Substations" standard and includes the substation's secondary circuit structure and equipment connection relationships.

[0024] Step 2: parse the SDD full-station secondary circuit model file and construct the panel cabinet cable connection diagram and panel cabinet cable core connection diagram.

[0025] Step 201: Parse the SDD full-station secondary circuit model file to obtain panel information and circuit information. Panel information includes panel name, number, installation location, etc. Circuit information includes cable type, number of cable cores, terminal block layout, etc.

[0026] Step 202: Select the cabinet on the page using a rectangle based on the cabinet information. Indicate the cabinet name, number, and installation location in text within, on, or around the rectangle. The size of the rectangle is determined by the cabinet size and is typically a rectangle with a length-to-width ratio of 1:1.5.

[0027] Step 203: Arrange the cabinets connected to the central cabinet in four or two directions and connect them with a line segment to mark the cable connection between the two cabinets. The length of the line segment is determined by the distance between the cabinets, usually 0.5-1.5 meters.

[0028] Step 204: Label the cable segment with information such as the cable number, description, function, and specifications. Cable numbers use a unified coding convention, for example, "Distribution Transformer-XX," with a description of "Distribution Transformer Outgoing Circuit," a function of "Distribution Transformer Outgoing Circuit," and specifications of "2*35mm²." Step 3: Determine whether the panel cabinet cable connection diagram and panel cabinet cable core connection diagram need to be updated. If so, return to step 1; otherwise, proceed to step 4.

[0029] Step 301: Receive a modification request from a substation operator. The modification request is sent to the server via a mobile terminal APP and includes information such as the modification type, modification content, and modification reason.

[0030] Step 302: Verify the modification authority. If the user does not have the authority, return to step 1. If the user has the authority, execute step 303. Verify that the user is authenticated using the MD5 encryption algorithm.

[0031] Step 303: Update the panel cabinet cable connection diagram and panel cabinet cable core connection diagram according to the modification request. The update content includes panel cabinet position adjustment, cable replacement, circuit modification, etc.

[0032] Step 4: Display the panel cabinet cable connection diagram and the panel cabinet cable core connection diagram on one page.

[0033] Step 401: On an A4-sized page, draw a panel cabinet cable connection diagram and a panel cabinet cable core connection diagram using SVG format.

[0034] Step 402: Graphically display the connection relationship between cables and cable cores between cabinets. Use straight lines to connect cabinets, use arcs to connect cables and cabinets, and use different line colors to distinguish cable types.

[0035] Step 403: Support customization and adjustment of visualization charts and contents according to actual needs of the substation, such as adjusting the panel cabinet layout and cable connection method according to different substation environments.

[0036] Step 404: Implement intelligent display and management of panel cabinet loop information. The panel cabinet loop information is stored in a database, loop relationships are displayed in a tree structure, and loop query, maintenance, and modification functions are supported. Example 2:

[0037] The present invention provides a method for displaying photoelectric circuits between secondary panels in a substation. The specific implementation steps are as follows: Step 1: Obtain the SDD full-station secondary circuit model file of the substation secondary circuit.

[0038] Step 101: Acquire communication information through the SCD file of the communication model of the smart substation. The SCD file adopts the IEC61850 standard and includes the communication network structure and communication rules of the substation.

[0039] Step 102: Parse the communication information in the SCD file and extract the GOOSE message and MMS message. The GOOSE message is used to transmit the switching quantity information of the substation, and the MMS message is used to transmit the process quantity information of the substation.

[0040] Step 103: Construct an SDD full-station secondary circuit model file based on the analysis results. The SDD model file uses the T / CEC818-2023 "Modeling and Interaction Specifications for Relay Protection and Safety Automation Devices in Substations" standard and includes the substation's secondary circuit structure and equipment connection relationships.

[0041] Step 2: parse the SDD full-station secondary circuit model file and construct the panel cabinet cable connection diagram and panel cabinet cable core connection diagram.

[0042] Step 201: Parse the SDD full-station secondary circuit model file to obtain panel information and circuit information. Panel information includes panel name, number, installation location, etc. Circuit information includes cable type, number of cable cores, terminal block layout, etc.

[0043] Step 202: Select the cabinet on the page using a rectangle based on the cabinet information. Indicate the cabinet name, number, and installation location in text within, on, or around the rectangle. The size of the rectangle is determined by the cabinet size and is typically a rectangle with a length-to-width ratio of 1:1.5.

[0044] Step 203: Arrange the cabinets connected to the central cabinet in four or two directions and connect them with a line segment to mark the cable connection between the two cabinets. The length of the line segment is determined by the distance between the cabinets, usually 0.5-1.5 meters.

[0045] Step 204: Label the cable segment with information such as the cable number, description, function, and specifications. A unified coding convention is used for cable numbers, for example, "Distribution Transformer-XX," with a description of "Distribution Transformer Outgoing Circuit," a function of "Distribution Transformer Outgoing Circuit," and specifications of "2*35mm²."

[0046] Step 3: Determine whether the panel cabinet cable connection diagram and panel cabinet cable core connection diagram need to be updated. If so, return to step 1; otherwise, proceed to step 4.

[0047] Step 301: Receive a modification request from a substation operator. The modification request is sent to the server via a mobile terminal APP and includes information such as the modification type, modification content, and modification reason.

[0048] Step 302: Verify the modification authority. If there is no authority, return to step 1. If there is authority, execute step 303. Verify the user's identity using the SHA-256 encryption algorithm.

[0049] Step 303: Update the panel cabinet cable connection diagram and panel cabinet cable core connection diagram according to the modification request. The update content includes panel cabinet position adjustment, cable replacement, circuit modification, etc.

[0050] Step 4: Display the panel cabinet cable connection diagram and the panel cabinet cable core connection diagram on one page.

[0051] Step 401: Draw a panel cabinet cable connection diagram and a panel cabinet cable core connection diagram on an A4-sized page in PDF format.

[0052] Step 402: Graphically display the connection relationship between cables and cable cores between cabinets. Use straight lines to connect cabinets, use arcs to connect cables and cabinets, and use different line colors to distinguish cable types.

[0053] Step 403: Support customization and adjustment of visualization charts and contents according to actual needs of the substation, such as adjusting the panel cabinet layout and cable connection method according to different substation environments.

[0054] Step 404: Implement intelligent display and management of panel cabinet circuit information. The panel cabinet circuit information is stored in a database, and the circuit relationship is displayed in a tree structure, supporting functions such as circuit query, maintenance, and modification. It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0055] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A method for displaying photoelectric circuits between secondary panels in a substation, characterized by: The method comprises the following steps: Step 1: Obtain the SDD full-station secondary circuit model file of the substation secondary circuit; Step 2: parse the SDD full-station secondary circuit model file and construct the panel cabinet cable connection diagram and panel cabinet cable core connection diagram; Step 3: Determine whether the panel cabinet cable connection diagram and panel cabinet cable core connection diagram need to be updated. If so, return to step 1; otherwise, go to step 4. Step 4. Output the panel cabinet cable connection diagram and the panel cabinet cable core connection diagram.

2. A method for displaying photoelectric circuits between secondary panels in a substation according to claim 1, characterized in that: The step 1 comprises: Step 101: Acquire communication information through the communication model SCD file of the smart substation; Step 102: Parse the communication information in the SCD file and extract the GOOSE message and the MMS message; Step 103: Based on the parsing results of the GOOSE message and the MMS message, construct an SDD full-station secondary circuit model file that complies with the T / CEC 818-2023 specification.

3. The method for displaying photoelectric circuits between secondary panels in a substation according to claim 1, characterized in that: The step 2 includes: Step 201: parse the SDD model file to obtain the cabinet name, number, installation location, cable type, and cable core quantity information; Step 202: Select the screen cabinet by using a rectangular frame, and mark the screen cabinet attribute information inside and outside the rectangular frame; Step 203: Arrange the cabinets connected to the central cabinet according to a preset layout, connect the cables with line segments to identify their relationships, and dynamically adjust the length of the line segments based on the physical distance between the cabinets. Step 204: Label the line segment with information including the cable number, function description, and specification parameters.

4. The method for displaying photoelectric circuits between secondary panels in a substation according to claim 1, characterized in that: The step 3 comprises: Step 301: Receive a modification request initiated by an operation and maintenance personnel via a mobile terminal, wherein the request includes a work order number and a hash value of the modification content; Step 302: Verify the biometric information and work order permissions of the operation and maintenance personnel. If the verification fails, terminate the process and generate an alarm log; Step 303: The modified content is verified by consensus through the blockchain smart contract. After the verification is passed, the connection diagram is updated and a new version identifier is generated.

5. The method for displaying photoelectric circuits between secondary panels in a substation according to claim 4, characterized in that: In step 302: The biometric verification includes multi-factor authentication of fingerprint, iris and dynamic work order QR code, and the verification process is locally processed through edge computing nodes to avoid uploading biometric data to the cloud.

6. The method for displaying photoelectric circuits between secondary panels in a substation according to claim 1, characterized in that: The step 4 comprises: Step 401: Use SVG vector graphics to display the cable connection diagram and the cable core connection diagram in layers on the same page, supporting zooming and layer switching; Step 402: Different colors are used to distinguish the connection relationship between the optical cable and the electrical cable, and the operating status is indicated by the dashed and solid lines; Step 403: Provide a custom interface to allow users to adjust the cabinet layout, cable marking style, and information display granularity.

7. The method for displaying photoelectric circuits between secondary panels in a substation according to claim 1, characterized in that: Also includes: Step 5: After updating the connection diagram, synchronize the modified data to the substation local server, cloud backup, and associated SCADA system via the TSN time-sensitive network protocol, and use CRC checksum to ensure data consistency.

8. The method for displaying photoelectric circuits between secondary panels in a substation according to claim 1, characterized in that: Also includes: Step 6: Train an LSTM neural network model based on historical operation and maintenance data to monitor the secondary circuit status in real time and predict fault risks. Mark high-risk panel cabinet locations and recommended maintenance paths in the form of a heat map in the graphical interface.

9. The method for displaying photoelectric circuits between secondary panels in a substation according to claim 1, characterized in that: In the cable connection diagram: Each cable label is associated with a hyperlink. Clicking it will jump to the display of the complete test report, maintenance record and real-time monitoring data curve of the cable.

10. The method for displaying photoelectric circuits between secondary panels in a substation according to claim 1, characterized in that: Also includes: Step 7: Convert the panel cabinet cable connection diagram into a 3D model: Step 71: Obtain the actual spatial coordinates of the screen cabinet through laser point cloud scanning, and accurately restore the physical layout of the screen cabinet in the model; Step 72: Use a semi-transparent pipeline to indicate the direction of the optical / electrical cable, and dynamically map the pipeline diameter to the real-time transmission bandwidth and current intensity; Step 73: Support gesture recognition operation. Use both hands to zoom in and out to view hidden connection points. Long press a specific cable to trigger an automatic loop continuity test. Step 74: When an abnormal signal is detected, the model automatically focuses on the fault area and generates a three-dimensional arc warning animation, while superimposing the location information of the nearest maintenance personnel.

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