Passive ground wire management system and method based on wireless key

Abstract

The invention aims to provide the passive ground wire management system and method based on the wireless key, which do not depend on a wireless network, have a forced management function and can accurately collect the state of the ground wire in real time. The system comprises an anti-misoperation host of an integrated ground wire management system, a wireless key, a ground wire management controller, an intelligent locking pile, an intelligent ground wire clamp, a state ground wire lock and an intelligent ground wire cabinet, the state ground wire lock is of a passive maintenance-free structure, and the wireless key reads the state of the state without depending on a wireless network; the method comprises a ground wire hooking process (invoicing simulation-unlocking wire taking-identity confirmation-hooking state acquisition-information return) and a dismounting process (invoicing simulation-conductor end dismounting confirmation-ground end dismounting acquisition-information return-return verification). The method is applied to the technical field of power safety.

Description

Technical Field

[0001] This invention relates to the field of power system security protection technology, specifically a passive ground wire management system and method based on wireless keys, used for real-time monitoring and identification of the temporary ground wire connection / removal status in substations, power plants and other locations, solving the problems of information lag and misidentification in traditional ground wire management. Background Technology

[0002] In power system operation and maintenance, temporary grounding wires are a key tool for ensuring equipment maintenance safety, and the standardization of their connection and removal directly affects personnel safety and the stable operation of the power grid. However, existing grounding wire management technologies have the following significant shortcomings: 1. High reliance on manual labor and prone to errors: Traditional ground wire management relies on manual recording of retrieval, return, and hanging / unhanging status, which poses risks of record omissions and misrecording. In addition, the information transmission efficiency during shift handover is low, and misoperation is easily caused by information deviation. 2. Poor communication reliability: Some ground wire status acquisition systems rely on the on-site wireless network to transmit data. Affected by electromagnetic interference, network interruption, etc., there is a risk of communication delay or failure, which makes it impossible to update the ground wire status in real time. 3. Inaccurate status data collection: There is a lack of technical means to confirm the connection and disconnection of the ground wire. The status is judged only by whether it is in the warehouse. It is impossible to distinguish between the statuses such as "in the warehouse but not used", "connected on site", and "not connected on site but not returned". This can easily lead to "powering on with ground wire". 4. Lack of mandatory constraints on storage location management: The grounding storage cabinets lack a mandatory locking mechanism, allowing operators to freely access and use the grounding wires, which can easily lead to problems such as "incorrectly accessing the grounding wire" or "accessing too many grounding wires," thus disrupting the standardization of operating procedures. 5. High maintenance costs: Some grounding locks are active designs, requiring regular battery replacement or charging, which increases maintenance workload and costs.

[0003] To address the aforementioned issues, there is an urgent need for a technical solution that does not rely on wireless networks, has mandatory management functions, can accurately collect ground wire status in real time, and is maintenance-free, in order to improve the security and efficiency of ground wire management. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a passive ground wire management system and method based on wireless keys that does not rely on wireless networks, has forced management functions, and can collect ground wire status in real time and accurately.

[0005] The technical solution adopted in this invention is a passive ground wire management system based on a wireless key, the system comprising: An anti-misoperation host integrated with a ground wire management system, wherein the ground wire management system is used to realize the management of ground wire storage locations and the connection of ground wire operation procedures with the external anti-misoperation system, and generates and issues switching operation tickets containing ground wire connection / removal steps. The wireless key, which is connected to the anti-misoperation host, is used to receive the switching operation ticket, read the identity information and status information of the ground wire connection / removal, and transmit the information back to the anti-misoperation host; The ground wire management controller, installed in the intelligent ground wire cabinet and communicating with the anti-misoperation host, is used to receive the ground wire unlocking command issued by the anti-misoperation host and execute the unlocking operation of the corresponding intelligent locking stake. Several intelligent interlocking stakes are installed inside the intelligent grounding cabinet and are communicatively connected to the grounding management controller. The intelligent interlocking stakes are used to perform one-to-one forced interlocking of the grounding wire and to detect the status of the grounding wire in the warehouse. The intelligent grounding clamp installed on the temporary grounding wire is used to define the identity of the temporary grounding wire, realize the mandatory locking management of the grounding wire storage location, and serve as the basis for judging the identity of the grounding wire connection and actual removal. A status grounding lock is installed at a temporary grounding point in the equipment area and is compatible with the wireless key. The status grounding lock is used to output the status information of grounding wire connection / removal, and is locked by a mechanical coded lock and unlocked by the wireless key. In addition, an intelligent grounding cabinet for storing grounding wires, the intelligent grounding cabinet having constant temperature and humidity functions.

[0006] Furthermore, the passive ground wire management system based on wireless key also includes a ground wire centralized display screen installed on the anti-misoperation host. The ground wire centralized display screen is used to centrally display the status of all temporary ground wires in the managed station in real time, and displays the total number of ground wires, the number used, the total number of grounding switches, and the number of closed ground wires.

[0007] Furthermore, the communication methods of the ground wire management controller include a 10M / 100M Ethernet interface and an RS485 bus, wherein the ground wire management controller communicates with the anti-misoperation host through the Ethernet interface and with the intelligent interlocking pile through the RS485 bus; The ground wire management controller supports three authorization methods: password, card swipe, and network. It stores no less than 2,000 operation records, adopts a cyclic overwrite storage mode, and has a data power failure memory function.

[0008] Furthermore, the intelligent interlocking pile communicates with the ground wire management controller using an industrial standard RS485 interface, with an operating voltage of DC24V, a static current ≤25mA, a dielectric strength ≥2000V, and a mean time between failures ≥50000 hours.

[0009] Furthermore, the protection level of the device with the status grounding lock is IP55, the rated short-time withstand current is ≥8kA, the rated peak withstand current is ≥20kA, the rated short-circuit duration is ≥4S, the operating temperature range is -25℃~55℃, the storage temperature range is -40℃~70℃, and the coding value is 2^n, where n≥12 and n is an integer.

[0010] Furthermore, the anti-misoperation host displays the placement status of the ground wire in the intelligent grounding cabinet in real time. When the ground wire is returned to the wrong position, the anti-misoperation host triggers an alarm. After the ground wire is removed from the intelligent grounding cabinet, it is only allowed to operate according to the permitted sequence of the switching operation ticket. Operations that do not conform to the sequence will be blocked and a warning will be issued.

[0011] A management method for a passive ground wire management system based on a wireless key, as described above, includes a ground wire connection process and a ground wire removal process, wherein, The grounding wire connection process includes the following steps: S11. The ground wire management system of the anti-misoperation host performs simulated ticketing, selects the ground wire to be connected to the equipment area, generates a switching operation ticket containing the ground wire connection steps, and sends the switching operation ticket to the wireless key. S12. The ground wire management controller receives the ground wire unlocking command issued by the anti-misoperation host, sends an unlocking signal to the corresponding smart interlocking pile, and releases the forced interlocking of the target ground wire by the smart interlocking pile. S13. The operator takes the grounding wire from the intelligent grounding cabinet and carries it to the equipment area. S14. When the wireless key performs the ground wire connection step, it first reads the identity information of the smart ground wire clip on the ground wire and confirms the ground wire number corresponding to the connection point. S15. The wireless key unlocks the status grounding lock, and the operator fixes the grounding wire head into the status grounding lock. The wireless key reads the "grounding wire connected" status information output by the status grounding lock. S16. The wireless key transmits the identity information and the "ground wire connected" status information back to the anti-misoperation host. The anti-misoperation host updates the ground wire status and synchronizes it to the ground wire centralized display screen. The process of removing the grounding wire includes the following steps: S21. The ground wire management system of the anti-misoperation host performs simulated ticketing, selects the ground wire to be removed, generates a switching operation ticket containing the ground wire removal steps, and sends the switching operation ticket to the wireless key. S22. When the wireless key performs the ground wire removal step, the operator first removes the conductor connection end of the ground wire. The wireless key reads the identity information of the smart ground wire clip at the conductor connection end to confirm that the ground wire has indeed been removed from the conductor end. S23. The wireless key unlocks the status grounding lock, the operator pulls out the grounding wire, and the wireless key reads the "grounding wire removed" status information output by the status grounding lock; S24. The wireless key transmits the identity information and the "ground wire removed" status information back to the anti-misoperation host. The anti-misoperation host updates the ground wire status and synchronizes it to the ground wire centralized display screen. S25. The operator returns the ground wire to the designated position of the intelligent ground wire cabinet. The intelligent interlocking pile detects the ground wire's position. If the return position is incorrect, the anti-misoperation host triggers an alarm.

[0012] Furthermore, in steps S14 and S22, the wireless key reads the identity information of the smart ground clamp using radio frequency identification technology, and the identity information includes a unique ground wire number.

[0013] Furthermore, in steps S16 and S24, the anti-misoperation host also includes a step of recording operation information. The operation information includes the operator's name, operation permissions, ground wire number, ground wire installation location, ground wire usage time, and return time. The operation information is stored in the ground wire management controller, which supports querying, retrieval, and printing. The storage limit is 2000 entries, and a cyclic overwrite mode is used after the limit is exceeded.

[0014] The beneficial effects of this invention are as follows: 1. High reliability: The status grounding lock adopts a passive and maintenance-free design, requiring no subsequent maintenance after installation; status acquisition is completed directly through a wireless key, without relying on a wireless network, avoiding the risk of communication interruption, and has strong anti-interference capabilities; 2. High security: The intelligent interlocking pile enables "no wire without ticket", the mandatory process of "disconnecting the conductor end first and then the grounding end" prevents "powering on with the ground wire connected", and identity verification avoids "wrong connection or disconnection". Multiple protections eliminate misoperation. 3. Efficiency Improvement: The centralized ground wire display screen shows the status of the entire station in real time, reducing manual inspection time; operation records are automatically stored, support retrieval and printing, simplifying shift handover information transmission and maintenance traceability; 4. Wide adaptability: The intelligent grounding cabinet is available in two types: combined pole and line, and separate pole and line, to adapt to different grounding wire structures; the equipment's operating temperature range is -40℃ to 70℃, meeting the environmental requirements of various power scenarios; 5. Cost reduction: Passive locks eliminate the need for battery replacements, reducing maintenance workload; mandatory management reduces equipment damage caused by misoperation, minimizing economic losses. Attached Figure Description

[0015] Figure 1 This is a simplified structural diagram of the system of the present invention. Detailed Implementation

[0016] like Figure 1 As shown, the present invention provides a passive ground wire management system based on a wireless key, comprising: The anti-misoperation host 1 is integrated with a ground wire management system. The ground wire management system is used to realize the management of ground wire storage locations and the connection between the ground wire operation process and the external anti-misoperation system, and to generate and issue switching operation tickets containing ground wire connection / removal steps. The wireless key 2, which is communicatively connected to the anti-misoperation host 1, is used to receive the switching operation ticket, read the identity information and status information of the ground wire connection / removal, and transmit the information back to the anti-misoperation host 1; The ground wire management controller 3, which is installed in the intelligent ground wire cabinet 7 and is communicatively connected to the anti-misoperation host 1, is used to receive the ground wire unlocking command issued by the anti-misoperation host 1 and execute the unlocking operation of the corresponding intelligent locking stake 4. Several intelligent interlocking stakes 4 are installed in the intelligent grounding cabinet 7 and are communicatively connected to the grounding management controller 3. The intelligent interlocking stakes 4 are used to perform one-to-one forced interlocking of the grounding wire 8 and to detect the status of the grounding wire 8 in the warehouse. The intelligent grounding clamp 5 installed on the temporary grounding wire is used to define the identity of the temporary grounding wire, realize the mandatory locking management of the grounding wire storage location, and serve as the basis for judging the identity of the grounding wire connection and actual removal. A status grounding lock 6 is installed at a temporary grounding point in the equipment area and is compatible with the wireless key 2. The status grounding lock 6 is used to output the status information of grounding wire connection / removal, and is locked by a mechanical coded lock and unlocked by the wireless key 2. And, an intelligent grounding cabinet 7 for storing grounding wires, the intelligent grounding cabinet 7 having constant temperature and humidity functions.

[0017] Specifically, the passive ground wire management system based on wireless key also includes a ground wire centralized display screen installed on the anti-misoperation host 1. The ground wire centralized display screen is used to centrally display the status of all temporary ground wires in the managed station in real time, and displays the total number of ground wires, the number used, the total number of grounding switches, and the number of closed ground wires.

[0018] The ground wire management controller 3 has a communication method including a 10M / 100M Ethernet interface and an RS485 bus. The ground wire management controller 3 communicates with the anti-misoperation host 1 through the Ethernet interface and with the intelligent interlocking pile 4 through the RS485 bus. The ground wire management controller 3 supports three authorization methods: password, card swipe, and network. It stores no less than 2,000 operation records, adopts a cyclic overwrite storage mode, and has a data power failure memory function.

[0019] The intelligent interlocking pile 4 communicates with the ground wire management controller 3 via an industrial standard RS485 interface. The operating voltage is DC24V, the static current is ≤25mA, the dielectric strength is ≥2000V, and the mean time between failures is ≥50000 hours.

[0020] The protection level of the state grounding lock 6 is IP55, the rated short-time withstand current is ≥8kA, the rated peak withstand current is ≥20kA, the rated short-circuit duration is ≥4S, the operating temperature range is -25℃~55℃, the storage temperature range is -40℃~70℃, and the coding value is 2^n, where n≥12 and n is an integer.

[0021] The anti-misoperation host 1 displays the placement status of the ground wire in the intelligent ground wire cabinet 7 in real time. When the ground wire is returned to the wrong position, the anti-misoperation host 1 triggers an alarm. After the ground wire is taken out of the intelligent ground wire cabinet 7, it is only allowed to operate according to the permitted sequence of the switching operation ticket. Operations that do not conform to the sequence will be blocked and a warning will be issued.

[0022] The management method of the aforementioned passive ground wire management system based on wireless keys includes a ground wire connection process and a ground wire removal process, wherein, The grounding wire connection process includes the following steps: S11. The ground wire management system of the anti-misoperation host 1 performs simulated ticketing, selects the ground wire to be connected to the equipment area, generates a switching operation ticket containing the ground wire connection steps, and sends the switching operation ticket to the wireless key 2. S12. The ground wire management controller 3 receives the ground wire unlocking command issued by the anti-misoperation host 1, and sends an unlocking signal to the corresponding intelligent interlocking pile 4 to release the forced interlocking of the target ground wire by the intelligent interlocking pile 4. S13. The operator takes the ground wire from the intelligent grounding cabinet 7 and carries it to the equipment area. S14. When the wireless key 2 performs the ground wire connection step, it first reads the identity information of the smart ground wire clip 5 on the ground wire 8 and confirms the ground wire number corresponding to the connection point. S15. The wireless key 2 unlocks the status grounding lock 6, and the operator fixes the grounding wire head into the status grounding lock 6. The wireless key 2 reads the "grounding wire connected" status information output by the status grounding lock 6. S16. The wireless key 2 transmits the identity information and the "ground wire connected" status information back to the anti-misoperation host 1. The anti-misoperation host 1 updates the ground wire status and synchronizes it to the ground wire centralized display screen. The process of removing the grounding wire includes the following steps: S21. The ground wire management system of the anti-misoperation host 1 performs simulated ticketing, selects the ground wire to be removed, generates a switching operation ticket containing the ground wire removal steps, and sends the switching operation ticket to the wireless key 2. S22. When the wireless key 2 performs the ground wire removal step, the operator first removes the conductor connection end of the ground wire. The wireless key 2 reads the identity information of the smart ground wire clip 5 at the conductor connection end to confirm that the ground wire has indeed been removed from the conductor end. S23. The wireless key 2 unlocks the status grounding lock 6, the operator pulls out the grounding wire, and the wireless key 2 reads the "grounding wire removed" status information output by the status grounding lock. S24. The wireless key 2 transmits the identity information and the "ground wire removed" status information back to the anti-misoperation host 1. The anti-misoperation host 1 updates the ground wire status and synchronizes it to the ground wire centralized display screen. S25. The operator returns the ground wire to the designated position of the intelligent ground wire cabinet 7. The intelligent interlocking pile 4 detects the ground wire's position. If the return position is incorrect, the anti-misoperation host 1 triggers an alarm.

[0023] In steps S14 and S22, the wireless key 2 reads the identity information of the smart ground wire clip 5 using radio frequency identification technology. This identity information includes a unique ground wire number. In steps S16 and S24, the anti-misoperation host 1 further includes a step of recording operation information. This operation information includes the operator's name, operation permissions, ground wire number, ground wire installation location, ground wire retrieval time, and return time. This operation information is stored in the ground wire management controller 3, supporting querying, retrieval, and printing. The maximum storage capacity is 2000 entries; exceeding this limit uses a cyclic overwrite mode.

[0024] To enable those skilled in the art to clearly understand the technical solution of the present invention and to implement it in practice, the specific implementation method of the present invention is described in detail below in conjunction with the application scenario of a 110kV substation: (I) System Deployment Anti-misoperation host 1: Installed in the substation control room, embedded with the existing anti-misoperation software, the ground wire management system is seamlessly connected with the anti-misoperation software, and supports simulated invoicing and status display; Intelligent grounding cabinet 7: The pole-line separation cabinet is selected (because the grounding body and the hanging pole of this station can be separated). It is installed in a special storage room in the equipment area. The cabinet is equipped with 1 grounding management controller and 20 intelligent interlocking stakes (corresponding to 20 groups of grounding wires). The grounding management controller 3 is connected to the anti-misoperation host 1 via Ethernet and to the intelligent interlocking stake 4 via RS485 bus. 6. Status grounding lock: Install one unit at each of the 35 temporary grounding points in the 110kV and 10kV equipment areas of the station. The protection level is IP55, the rated short-time withstand current is 8kA, and it is compatible with mechanical coding unlocking of wireless keys. Intelligent grounding clamp 5: One clamp is configured for each of the 20 groups of grounding wires. It has a built-in radio frequency chip to store a unique number (such as "110kV-01" "10kV-05"). It is installed at the grounding conductor connection end. Centralized ground wire display screen: Installed on the computer host in the control room, the software interface displays real-time information such as "Total number of ground wires in the whole station: 20 sets, 0 sets in use", "110kV grounding switch: 19 units, 0 units closed", and "10kV grounding switch: 16 units, 0 units closed".

[0025] (II) Implementation of grounding wire connection operation (taking "grounding wire connection of 110kV#1 busbar" as an example) S11: The operator simulates issuing an operation ticket on the anti-misoperation host, selects "110kV#1 busbar grounding wire (number 110kV-01)", generates the operation ticket, and sends it to the wireless key; S12: The ground wire management controller receives the unlocking command from the anti-misoperation host and sends an unlocking signal to the intelligent interlocking pile corresponding to the "110kV-01" ground wire. The indicator light of the interlocking pile changes from red to green, indicating that it can be used. S13: The operator takes the wireless key to the intelligent grounding cabinet and removes the "110kV-01" grounding wire. At this time, the anti-misoperation host displays "110kV-01 grounding wire has been removed" in real time. S14: The operator carries the ground wire to the grounding point of the 110kV#1 busbar. The wireless key prompts "Read ground wire identity". The operator brings the key close to the smart ground wire clamp and reads the number "110kV-01" to confirm the identity matching. S15: Insert the wireless key into the lock hole with the status ground wire lock, rotate to unlock, and the operator fixes the ground wire end to the lock. The key reads the "ground wire connected" signal, and the screen displays "connection successful". S16: The wireless key transmits the information "110kV-01 ground wire connected to 110kV#1 bus" back to the anti-misoperation host via infrared (or wired) means. The anti-misoperation host updates the status to "1 group used" and the ground wire centralized display screen updates synchronously.

[0026] (III) Implementation of Ground Wire Removal Operation (Taking "Removal of 110kV #1 Busbar Ground Wire" as an example) S21: The operator simulates issuing an operation ticket on the anti-misoperation host, selects "Remove 110kV#1 bus ground wire (110kV-01)", generates the operation ticket, and sends it to the wireless key; S22: When the operator arrives at the site, first remove the ground wire conductor connection end, then bring the wireless key close to the smart ground wire clamp, and successfully read the number "110kV-01". The key prompts "Conductor end has been removed". S23: Insert the wireless key into the lock with the status ground wire, unlock it, and then pull out the ground wire head. The key reads the "ground wire removed" signal, and the screen displays "removal successful". S24: The key sends the message "110kV-01 ground wire has been removed" back to the anti-misoperation host, the host status is updated to "0 groups used", and the centralized display system is updated synchronously; S25: When the operator returns the ground wire to the interlocking terminal corresponding to "110kV-01" of the intelligent grounding cabinet, the interlocking terminal detects that the ground wire is in place, the indicator light changes from green to red, and the anti-misoperation host displays "110kV-01 ground wire has been returned"; if the ground wire is mistakenly returned to the "110kV-02" interlocking terminal, the host immediately triggers an audible and visual alarm and prompts "Incorrect return position".

[0027] (iv) Operation records and traceability The ground wire management controller stores the operation record for this operation: operator "Zhang San (Maintenance Team)", ground wire number "110kV-01", installation location "110kV#1 busbar", retrieval time "2024-05-10 09:15", and return time "2024-05-10 11:30". This record can be queried and retrieved on the anti-misoperation host and can also be printed out as a paper document.

[0028] This invention solves the problems of traditional ground wire management relying on manual labor, unreliable communication, and inaccurate status data collection. It enables mandatory management and real-time status data collection of the entire ground wire process, eliminates errors such as "powering on with the ground wire connected," and improves the safety and efficiency of power operation and maintenance.

[0029] Finally, it should be emphasized that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wireless key based passive ground management system, characterized in that, The system comprises The anti-misoperation host (1) integrated with the ground wire management system is used to realize the connection of the ground wire storage location management and the ground wire operation process with the anti-misoperation system of the periphery, and generate and issue the switching operation ticket containing the ground wire hanging / dismantling steps; The wireless key (2) in communication connection with the anti-misoperation host (1) is used to receive the switching operation ticket, read the identity information and state information of the ground wire hanging / dismantling, and return the information to the anti-misoperation host (1); The ground wire management controller (3) installed in the set intelligent ground wire cabinet (7) and in communication connection with the anti-misoperation host (1) is used to receive the ground wire unlocking instruction issued by the anti-misoperation host (1), and execute the unlocking operation on the corresponding intelligent locking stake (4); The intelligent locking stakes (4) installed in the intelligent ground wire cabinet (7) and in communication connection with the ground wire management controller (3) are used to one-to-one forcibly lock the ground wire (8) and detect the storage state of the ground wire (8); The intelligent ground wire clamp (5) installed on the temporary grounding wire is used to define the identity of the temporary grounding wire, realize the forced locking management of the ground wire storage location, and serve as the judgment basis for the ground wire hanging identity and actual dismantling; The state-bearing ground wire lock (6) installed at the temporary grounding point of the equipment area and adapted to the wireless key (2) is used to output the state information of the ground wire hanging / dismantling, and adopt a mechanical coded lock to be unlocked by the wireless key (2); And the intelligent ground wire cabinet (7) used to store the ground wire, the intelligent ground wire cabinet (7) has the constant temperature and humidity function.

2. The wireless key based passive ground management system of claim 1, wherein: The passive ground wire management system based on the wireless key further comprises the ground wire centralized display screen installed on the anti-misoperation host (1), which is used to realize the real-time centralized display of the states of all temporary grounding wires in the jurisdiction station, and display the total number of ground wires, the used number, the total number of ground switches and the combined number.

3. The wireless key based passive ground management system of claim 1, wherein: The communication mode of the ground wire management controller (3) comprises a 10M / 100M Ethernet interface and an RS485 bus, wherein the ground wire management controller (3) communicates with the anti-misoperation host (1) through the Ethernet interface and communicates with the intelligent locking stake (4) through the RS485 bus; The ground wire management controller (3) supports three authorization modes of password, card swiping and network, stores not less than 2000 operation records, adopts the cyclic coverage storage mode, and has the data power failure memory function.

4. The wireless key based passive ground management system of claim 1, wherein: The intelligent locking stake (4) communicates with the ground wire management controller (3) through the industrial standard RS485 interface, has a working voltage of DC 24V, a static current ≤25mA, an anti-electric strength ≥2000V, and an average failure-free time ≥50000 hours.

5. The wireless key based passive ground management system of claim 1, wherein: The protection level of the state-bearing ground wire lock (6) is IP55, the rated short-time resistance current is ≥8kA, the rated peak resistance current is ≥20kA, the rated short-circuit duration is ≥4S, the working temperature range is -25℃-55℃, the storage temperature range is -40℃-70℃, the code value is 2^n, wherein n≥12, n is an integer.

6. The wireless key based passive ground management system of claim 1, wherein: The anti-misoperation host (1) displays the placement of the ground wire in the intelligent ground wire cabinet (7) in real time, and triggers an alarm prompt when the ground wire is returned to the wrong position. After the ground wire is taken out of the intelligent ground wire cabinet (7), only operations according to the permitted sequence of the switching operation ticket are allowed, and operations that do not conform to the sequence will be prevented and warned.

7. A management method of a wireless-key-based passive ground wire management system according to any one of claims 1 to 6, characterized by, The method comprises a ground wire connection process and a ground wire removal process, wherein, The ground wire connection process comprises the following steps: S11, the ground wire management system of the anti-misoperation host (1) performs simulated ticket opening, selects a ground wire to be connected to a device area, generates a switching operation ticket containing a ground wire connection step, and sends the switching operation ticket to the wireless key (2); S12, the ground wire management controller (3) receives the ground wire unlocking instruction issued by the anti-misoperation host (1), issues an unlocking signal to the corresponding intelligent locking stake (4), and releases the forced locking of the target ground wire by the intelligent locking stake (4); S13, the operator takes the ground wire from the intelligent ground wire cabinet (7) and carries it to the device area; S14, when the wireless key (2) performs the ground wire connection step, it first reads the identity information of the intelligent ground wire clamp (5) on the ground wire (8) to confirm the ground wire number corresponding to the connection point; S15, the wireless key (2) unlocks the status ground wire lock (6), the operator fixes the ground wire head in the status ground wire lock (6), and the wireless key (2) reads the "ground wire has been connected" status information output by the status ground wire lock (6); S16, the wireless key (2) returns the identity information and the "ground wire has been connected" status information to the anti-misoperation host (1), and the anti-misoperation host (1) updates the ground wire state and synchronizes it to the ground wire centralized display screen; The ground wire removal process comprises the following steps: S21, the ground wire management system of the anti-misoperation host (1) performs simulated ticket opening, selects a ground wire to be removed, generates a switching operation ticket containing a ground wire removal step, and sends the switching operation ticket to the wireless key (2); S22, when the wireless key (2) performs the ground wire removal step, the operator first removes the conductor connection end of the ground wire, and the wireless key (2) reads the identity information of the intelligent ground wire clamp (5) of the conductor connection end to confirm that the ground wire has been removed from the conductor end; S23, the wireless key (2) unlocks the status ground wire lock (6), the operator pulls out the ground wire head, and the wireless key (2) reads the "ground wire has been removed" status information output by the status ground wire lock; S24, the wireless key (2) returns the identity information and the "ground wire has been removed" status information to the anti-misoperation host (1), and the anti-misoperation host (1) updates the ground wire state and synchronizes it to the ground wire centralized display screen; S25, the operator returns the ground wire to the designated position of the intelligent ground wire cabinet (7), and the intelligent locking stake (4) detects the ground wire in-place state. If the return position is incorrect, the anti-misoperation host (1) triggers an alarm.

8. The wireless key based passive ground management system of claim 1, wherein: In the S14 step and the S22 step, the wireless key (2) reads the identity information of the smart ground clamp (5) by radio frequency identification technology, and the identity information includes a unique ground number.

9. The wireless key based passive ground management system of claim 1, wherein: In the S16 step and the S24 step, the anti-misoperation host (1) further includes a recording operation information step, the operation information includes an operator name, an operation permission, a ground number, a ground installation position, a ground taking time and a return time; the operation information is stored in the ground management controller (3), supports query, retrieval and print output, and the upper limit of the storage quantity is 2000, and a cyclic coverage mode is used after exceeding.

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