Transformer substation cable intelligent label system and method based on RFID technology

Abstract

The invention relates to a transformer substation cable intelligent label system and method based on the RFID technology, and belongs to the technical field of radio frequency identification. According to the technical scheme, an RFID intelligent acquisition module is used for accurately and stably identifying and establishing a unique corresponding relation between each cable tag and a physical port in a strong-interference transformer substation screen cabinet, and uploading data to a cable tag intelligent monitoring module; the cable label intelligent monitoring module is used for acquiring and processing the data uploaded by the RFID intelligent acquisition module, and dynamically displaying the connection state, attribute details and change events of the cable through a visual management interface; the RFID intelligent label module is used for endowing each cable with a unique digital identity and storing key information of cable numbers and cable end names. According to the invention, through the anti-interference design of directional identification calibration, time sequence isolation scanning and port affiliation determination, in combination with the environment-resistant RFID tag and encrypted data transmission, accurate identification and stable management of the tag-port corresponding relation of the dense cables of the transformer substation are realized.

Description

Technical Field

[0001] This invention relates to a smart tagging system and method for substation cables based on RFID technology, belonging to the field of radio frequency identification technology. Background Technology

[0002] As a core facility in the power system for transforming voltage, distributing electrical energy, and controlling the direction of power flow, substations have a large number of substation cables deployed inside and between them and external related equipment. These cables are a collective term for various conductors and supporting transmission carriers that transmit electrical energy, transmit control signals, and provide feedback monitoring data. They not only include high-voltage power cables connecting main equipment such as transformers and circuit breakers, but also control cables and communication cables that support the operation of protection devices and automation systems. They are the "nerve network" that ensures the normal operation of substations and enables power dispatching and equipment management.

[0003] Due to the large number of cables and the complex laying environment in substations, their management efficiency directly affects the substation's operational safety and power supply reliability. Existing technologies use ropes to hang labels on cable ends or affix labels, which can become detached, dirty, and worn over time. This leads to confusion in identification, fragmented management, low fault diagnosis efficiency, and difficulty in tracing operational data, severely impacting troubleshooting time and standardized management. It also increases the safety risks of staff misoperation and even personal safety. Furthermore, substation cable label management relies on a stored cable connection table for planning and troubleshooting. However, this table does not reflect the latest connection relationships and cannot clearly display the current cable connections, making retrieval extremely inconvenient and reducing operational efficiency and power supply reliability. Summary of the Invention

[0004] This invention proposes an intelligent tagging system and method for substation cables based on RFID technology. Through an anti-interference design of "directional identification calibration + time-series isolation scanning + port attribution determination", combined with environmentally resistant RFID tags and encrypted data transmission, it realizes accurate identification and stable management of the "tag-port" correspondence of dense cables in substations. This reduces the problems of identification confusion and scattered management caused by tag wear, ensures the accuracy and reliability of cable data, and solves the above-mentioned technical problems existing in the prior art.

[0005] The technical solution of this invention is: A substation cable intelligent tag system based on RFID technology includes an RFID intelligent acquisition module, a cable tag intelligent monitoring module, and an RFID intelligent tag module, wherein: ①The RFID intelligent acquisition module is used to accurately and stably identify and establish a unique correspondence between each cable tag and physical port in the substation cabinet with strong interference by integrating a micro antenna array and a polling scanning mechanism, and upload the data to the cable tag intelligent monitoring module; ②The cable tag intelligent monitoring module: is used to acquire and process the data uploaded by the RFID intelligent acquisition module, and dynamically display the connection status, attribute details and change events of the cable through a visual management interface; ③The RFID smart tag module: used to assign a unique digital identity to each cable and store key information such as cable number and cable end name.

[0006] The RFID intelligent acquisition module includes a radio frequency acquisition unit, a control and processing unit, and a data transmission unit. The radio frequency acquisition unit is used to acquire data from within the cable tag at close range and with precision through a miniature antenna array. The control and processing unit is used to execute a polling scanning mechanism, control the antenna operating timing, and process the raw signal to identify the correspondence between the tag and the port. The data transmission unit is used to encrypt and verify the processed connection relationship and stably upload it to the cable tag intelligent monitoring module.

[0007] The micro-antenna array consists of 4-8 distributed microstrip antennas, with each antenna having a beamwidth ≤ Furthermore, the spacing between adjacent antennas is set to 5-8mm, which solves the problem of signal crosstalk in strong electromagnetic environments and enables directional identification of corresponding cable labels connecting different physical ports within the cabinet.

[0008] The polling scanning mechanism adopts a port grouping polling + tag ID pre-matching strategy: the physical ports of the device are divided into several units in groups of eight, and the radio frequency acquisition unit scans the groups sequentially, and only responds to and identifies the target cable tag IDs pre-stored locally. The scanning interval can be remotely set to 10-60s through the cable tag intelligent monitoring module.

[0009] The intelligent monitoring module for cable tags includes a data access and processing unit, a connection relationship analysis unit, a visualization display unit, and a system management unit. The data access and processing unit receives and verifies data from all acquisition units, integrates and stores it. The connection relationship analysis unit dynamically analyzes the cable connection status, detects and records port insertion / removal events in real time. The visualization display unit dynamically displays detailed information such as device port connection status, cable connection relationships and numbers, the name of the opposite device, and tag IDs through a visual management interface. The system management unit manages user permissions and system configuration, and supports querying and exporting connection status tables.

[0010] The visual management interface includes a topology view, a port details view, and an event log view. Figure 3The topology view displays the cable connection relationship between the device and the counterpart device in a schematic diagram; the port details view supports displaying the corresponding port connection cable number, counterpart device name, and tag ID when the mouse is hovered over it; the event log view records cable connection change events in chronological order.

[0011] The RFID smart tag module includes a chip storage unit and an antenna and packaging unit; the chip storage unit is used to store the unique digital identity information of the cable, including key data such as the cable number and the name of the cable end; the antenna and packaging unit uses high-temperature resistant and flame-retardant packaging materials to stably receive the radio frequency energy of the reader and reflect the signal in the complex electromagnetic environment of the substation.

[0012] A method for using a substation cable smart tag system based on RFID technology is disclosed. The RFID smart acquisition module, through an integrated miniature antenna array and polling scanning mechanism, accurately and stably identifies and establishes a unique correspondence between each cable tag and its physical port within a substation cabinet experiencing strong interference, and uploads the data to a cable tag smart monitoring module. The cable tag smart monitoring module acquires and processes the data uploaded by the RFID smart acquisition module, dynamically displaying the cable's connection status, attribute details, and change events through a visual management interface. The RFID smart tag module assigns a unique digital identity to each cable, storing key information such as the cable number and cable end name. Through directional identification calibration, time-series isolated scanning, and port attribution determination, combined with environmentally resistant RFID tags and encrypted data transmission, accurate identification and stable management of the dense cable tag-port correspondence in substations are achieved, reducing identification confusion and fragmented management caused by tag wear, and ensuring the accuracy and reliability of cable data.

[0013] RFID technology: RFID is an abbreviation for Radio Frequency Identification, a type of automatic identification technology. Its principle is to enable non-contact data communication between the reader and the tag through wireless radio frequency, and to read and write the recording medium (electronic tag) using wireless radio frequency, thereby achieving the purpose of identifying targets and exchanging data.

[0014] The innovation of this invention lies in its anti-interference design, which combines "directional identification calibration + time-series isolation scanning + port attribution determination" with environmentally resistant RFID tags and encrypted data transmission. This enables accurate identification and stable management of the "tag-port" correspondence in densely packed cables in substations, reducing identification confusion and fragmented management caused by tag wear, and ensuring the accuracy and reliability of cable data. Through three-level alarm linkage, multi-view visual interaction, and permission-based system management, dynamic monitoring of cable connection status, rapid fault location, and efficient traceability of maintenance data are achieved, significantly reducing the time cost for maintenance personnel to troubleshoot faults and improving overall maintenance efficiency and power supply reliability.

[0015] The beneficial technical effects of this invention are: 1. Through three-level alarm linkage, multi-view visualization interaction and permission-based system management, dynamic monitoring of cable connection status, rapid location of fault events and efficient traceability of operation and maintenance data are realized, which greatly reduces the time cost for operation and maintenance personnel to troubleshoot faults and improves the overall operation and maintenance efficiency and power supply reliability. 2. Reduce safety hazards and improve management efficiency: Real-time monitoring of cable connections through smart tags makes cable routing clear and traceable, guiding on-site troubleshooting and reducing the safety risks of misoperation due to unclear labeling, while ensuring personal safety; RFID technology enables intelligent management of cable information, improving operation and maintenance efficiency, guiding on-site rapid fault isolation to reduce unplanned power outages, improving power supply reliability, and enhancing the economy of the power grid. Attached Figure Description

[0016] Figure 1 This is a system diagram of an embodiment of the present invention; Figure 2 This is a flowchart illustrating the system installation and calibration process according to an embodiment of the present invention. Figure 3 This is a flowchart illustrating the connection status analysis and alarm linkage in an embodiment of the present invention. The reference numerals are as follows: 100, RFID intelligent acquisition module; 101, radio frequency acquisition unit; 102, control and processing unit; 103, data transmission unit; 200, cable tag intelligent monitoring module; 201, data access and processing unit; 202, connection relationship analysis unit; 203, visualization display unit; 204, system management unit; 300, RFID intelligent tag module; 301, chip storage unit; 302, antenna and packaging unit. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Example

[0018] like Figures 1-3 As shown, this embodiment provides a substation cable smart tag system based on RFID technology, including an RFID smart acquisition module 100, a cable tag smart monitoring module 200, and an RFID smart tag module 300, wherein: RFID intelligent acquisition module 100: It is used to accurately and stably identify and establish a unique correspondence between each cable tag and physical port in the substation cabinet with strong interference by integrating a miniature antenna array and a polling scanning mechanism, and upload the data to the cable tag intelligent monitoring module 200. Cable tag intelligent monitoring module 200: Used to acquire and process data uploaded by RFID intelligent acquisition module 100, and dynamically display the connection status, attribute details and change events of the cable through a visual management interface; RFID smart tag module 300: Used to assign a unique digital identity to each cable and store key information such as cable number and cable end name.

[0019] The RFID intelligent acquisition module 100 includes an RFID acquisition unit 101, a control and processing unit 102, and a data transmission unit 103. The RFID acquisition unit 101 is used to acquire data from within the cable tag at close range and with precision through a miniature antenna array. The control and processing unit 102 is used to execute a polling scanning mechanism, control the antenna operating timing, and process the raw signal to identify the correspondence between the tag and the port. The data transmission unit 103 is used to encrypt and verify the processed connection relationship and stably upload it to the cable tag intelligent monitoring module 200.

[0020] The miniature antenna array consists of 4-8 distributed microstrip antennas, with each antenna having a beamwidth ≤ Furthermore, the spacing between adjacent antennas is set to 5-8mm, which solves the problem of signal crosstalk in strong electromagnetic environments and enables directional identification of cable labels corresponding to different physical ports within the cabinet.

[0021] The polling scanning mechanism adopts a "port group polling + tag ID pre-matching" strategy: the physical ports of the device are divided into several units of 8 ports / group, and the radio frequency acquisition unit 101 scans the groups sequentially, and only responds to and identifies the target cable tag IDs pre-stored locally. The scanning interval can be remotely set to 10-60s through the cable tag intelligent monitoring module 200.

[0022] The intelligent monitoring module 200 for cable tags includes a data access and processing unit 201, a connection relationship analysis unit 202, a visualization display unit 203, and a system management unit 204. The data access and processing unit 201 receives and verifies data from the data acquisition unit, integrates and stores it. The connection relationship analysis unit 202 dynamically analyzes the cable connection status, detects and records port insertion and removal events in real time. The visualization display unit 203 dynamically displays detailed information such as device port status, cable connection relationships, cable number, name of the device on the other side, and tag ID through a visual management interface. The system management unit 204 manages user permissions and system configuration, and supports querying and exporting connection status tables.

[0023] The visual management interface includes three functional areas: "Topology View", "Port Details View", and "Event Log View". The Topology View displays the cable connection relationship between the device and the counterpart device in a schematic diagram. The Port Details View supports displaying the cable number, counterpart device name, and tag ID of the corresponding port when the mouse is hovered over it. The Event Log View records cable connection change events in chronological order.

[0024] The RFID smart tag module 300 includes a chip storage unit 301 and an antenna and packaging unit 302. The chip storage unit 301 is used to store the unique digital identity information of the cable, including key data such as the cable number and the name of the cable end. The antenna and packaging unit 302 uses high-temperature resistant and flame-retardant packaging materials to stably receive the radio frequency energy of the reader and reflect the signal in the complex electromagnetic environment of the substation.

[0025] In this embodiment, a method for using a substation cable smart tag system based on RFID technology is as follows: First, the radio frequency acquisition unit 101 is used to collect data from the cable tag at close range and accurately through a miniature antenna array; the miniature antenna array is a 4-8 channel distributed microstrip antenna, and the beamwidth of each antenna is ≤ Furthermore, the spacing between adjacent antennas is set to 5-8mm, solving the signal crosstalk problem in strong electromagnetic environments. This allows for directional identification of cable tags corresponding to different physical ports within the cabinet. After installation, the cable tag intelligent monitoring module 200 initiates a "calibration mode," and the control and processing unit 102 drives each antenna to sequentially scan the corresponding port's "standard tag" (pre-bound with a known port number). The signal strength (RSSI) of each antenna is recorded. If the RSSI of a certain antenna is < -60dBm (the effective identification threshold in strong interference environments), the module's built-in fine-tuning knob (adjustment range ±) allows for... Adjust the antenna angle until the standard label RSSI of all antennas is ≥-60dBm; after calibration, the control and processing unit 102 automatically generates an "antenna-port mapping table", and during subsequent scanning, it only responds to the label signal of the corresponding port in the mapping table to filter cross-port interference.

[0026] The control and processing unit 102 is used to execute the polling scanning mechanism, control the antenna working timing, and process the raw signal to identify the correspondence between the tag and the port. The polling scanning mechanism adopts the strategy of "port group polling + tag ID pre-matching": the physical ports of the device are divided into several units of 8 ports / groups, and the radio frequency acquisition unit 101 scans the groups sequentially, and only responds to the target cable tag IDs pre-stored locally. The scanning interval can be remotely set to 10-60s through the cable tag intelligent monitoring module 200. The group scanning adopts the strategy of "timing isolation": when the first group is scanned, the second and third group antennas are powered off and put into sleep mode; after the first group scan is completed, the second group scan is started after an interval of 200ms (interval time > antenna signal attenuation time) to ensure that there is no signal superposition between groups; if a port tag is identified by two adjacent groups of antennas at the same time (such as the edge overlap of the 8-port group and the 9-port group), the control and processing unit 102 performs "port belonging determination" - comparing the "port number" stored in the tag with the port range corresponding to the two groups of antennas, retaining only the identification data of the belonging group, and eliminating cross-boundary interference. The data transmission unit 103 is used to encrypt and verify the processed connection relationship and stably upload it to the cable tag intelligent monitoring module 200. The data access and processing unit 201 is used to receive and verify data from all acquisition units, integrate and store it; the connection relationship analysis unit 202 is used to dynamically analyze the cable connection status, detect and record port plugging and unplugging change events in real time; plugging and unplugging event judgment: two consecutive scans result in "present → absent" or "absent → present", and the interval between the two scans is greater than or equal to the scan cycle (e.g., a 10-second cycle requires an interval of ≥10 seconds) to avoid misjudgment of instantaneous plugging and unplugging; alarm linkage: after detecting a change event, a three-level response is triggered within 10 seconds: ① the visual interface status changes color (red / green); ② system log recording (including the status before and after the change, timestamp); ③ important events. (Such as main line plugging / unplugging) notifications are pushed to the maintenance terminal (SMS + APP notification); the visualization display unit 203 is used to dynamically display detailed information such as device port status, cable connection relationships, cable numbers, remote device names, and tag IDs through a visual management interface; the visual management interface includes three functional areas: "Topology View," "Port Details View," and "Event Log View": the topology view displays the cable connection relationships between the device and the remote device in a schematic diagram; the port details view supports displaying the corresponding port's cable number, remote device name, and tag ID when the mouse is hovered over it; the event log view records cable connection change events in chronological order. The system management unit 204 is used to manage user permissions and system configuration, and supports querying and exporting connection status tables.

[0027] The chip storage unit 301 stores the cable's unique digital identification information, including key data such as the cable number and cable end name. The unique digital identification uses a combination coding rule of "substation number + cable number + cable end number + tag production serial number," where the substation number is 4 digits, the cable number is 3 digits, the cable end number is 2 digits, and the production serial number is 8 digits. This ensures that each tag's identification is unique within the substation and facilitates traceability of the cable's installation location and production information. The antenna and encapsulation unit 302 uses high-temperature resistant and flame-retardant encapsulation materials to stably receive the reader's radio frequency energy and reflect signals in the complex electromagnetic environment of the substation. The encapsulation material is made of polyimide (PI) with a thickness of 0.5-1mm, has an IP67 waterproof and dustproof rating, a temperature resistance range of -40℃ to 85℃, and a UL94 V-0 flame retardant rating, making it suitable for both outdoor substation cabinets and high-temperature indoor environments.

[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A smart tagging system for substation cables based on RFID technology, characterized in that: It includes an RFID intelligent acquisition module (100), a cable tag intelligent monitoring module (200), and an RFID intelligent tag module (300), wherein: ①The RFID intelligent acquisition module (100) is used to accurately and stably identify and establish a unique correspondence between each cable tag and physical port in the substation cabinet with strong interference by integrating a micro antenna array and a polling scanning mechanism, and upload the data to the cable tag intelligent monitoring module (200). ②The cable tag intelligent monitoring module (200) is used to acquire and process the data uploaded by the RFID intelligent acquisition module (100), and dynamically display the connection status, attribute details and change events of the cable through a visual management interface; ③The RFID smart tag module (300) is used to assign a unique digital identity to each cable and store key information such as cable number and cable end name.

2. The intelligent tagging system for substation cables based on RFID technology according to claim 1, characterized in that: The RFID intelligent acquisition module (100) includes a radio frequency acquisition unit (101), a control and processing unit (102), and a data transmission unit (103). The radio frequency acquisition unit (101) is used to acquire data in the cable tag at close range and accurately through a miniature antenna array. The control and processing unit (102) is used to execute a polling scanning mechanism, control the antenna working timing, and process the raw signal to identify the correspondence between the tag and the port. The data transmission unit (103) is used to encrypt and verify the processed connection relationship and stably upload it to the cable tag intelligent monitoring module (200).

3. The intelligent tagging system for substation cables based on RFID technology according to claim 2, characterized in that: The micro-antenna array consists of 4-8 distributed microstrip antennas, with each antenna having a beamwidth ≤ Furthermore, the spacing between adjacent antennas is set to 5-8mm, which solves the problem of signal crosstalk in strong electromagnetic environments and enables directional identification of corresponding cable labels connecting different physical ports within the cabinet.

4. The intelligent tagging system for substation cables based on RFID technology according to claim 2, characterized in that: The polling scanning mechanism adopts a port grouping polling + tag ID pre-matching strategy: the physical ports of the device are divided into several units in groups of eight ports, and the radio frequency acquisition unit (101) scans the groups in sequence, and only responds to the target cable tag IDs pre-stored locally. The scanning interval can be remotely set to 10-60s through the cable tag intelligent monitoring module (200).

5. The intelligent tagging system for substation cables based on RFID technology according to claim 1, characterized in that: The cable tag intelligent monitoring module (200) includes a data access and processing unit (201), a connection relationship analysis unit (202), a visualization display unit (203), and a system management unit (204). The data access and processing unit (201) is used to receive and verify data from all acquisition units, and to integrate and store the data. The connection relationship analysis unit (202) is used to dynamically analyze the cable connection status, and to detect and record port insertion and removal events in real time. The visualization display unit (203) is used to dynamically display detailed information such as device port connection status, cable connection relationship and number, name of the opposite device, and tag ID through a visual management interface. The system management unit (204) is used to manage user permissions and system configuration, and supports query and export functions for the connection status table.

6. A substation cable intelligent tag system based on RFID technology according to claim 5, characterized in that: The visual management interface includes three functional areas: topology view, port details view, and event log view. The topology view shows the cable connection relationship between the device and the opposite device in the form of a diagram. The port details view supports displaying the corresponding port connection cable number, the name of the device on the other side, and the tag ID when the mouse is hovered over it; the event log view records cable connection change events in chronological order.

7. The intelligent tagging system for substation cables based on RFID technology according to claim 1, characterized in that: The RFID smart tag module (300) includes a chip storage unit (301) and an antenna and packaging unit (302); the chip storage unit (301) is used to store the unique digital identity information of the cable, including key data such as the cable number and the name of the cable end; the antenna and packaging unit (302) uses high temperature resistant and flame retardant packaging materials to stably receive the radio frequency energy of the reader and reflect the signal in the complex electromagnetic environment of the substation.

8. A method of using the substation cable intelligent tag system based on RFID technology as described in any one of claims 1-7, characterized in that: The RFID intelligent acquisition module (100) is used to accurately and stably identify and establish a unique correspondence between each cable tag and physical port in a substation cabinet with strong interference by integrating a micro antenna array and a polling scanning mechanism, and upload the data to the cable tag intelligent monitoring module (200); the cable tag intelligent monitoring module (200) is used to acquire and process the data uploaded by the RFID intelligent acquisition module (100), and dynamically display the connection status, attribute details and change events of the cable through a visual management interface; the RFID intelligent tag module (300) is used to assign a unique digital identity to each cable and store key information such as cable number and cable end name; By combining directional identification calibration, time-series isolation scanning, and port attribution determination with environmentally resistant RFID tags and encrypted data transmission, accurate identification and stable management of the tag-port correspondence of dense cables in substations can be achieved. This reduces the problems of identification confusion and scattered management caused by tag wear, and ensures the accuracy and reliability of cable data.

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