High-voltage power grid outage maintenance grounding protection system and implementation method thereof

Abstract

The invention relates to a high-voltage power grid outage maintenance grounding protection system and an implementation method thereof. The system comprises an intelligent grounding pile module, a control module, a ground clearance detection unit and a safety interlocking unit. The intelligent grounding pile module comprises a grounding pile control host, a grounding pile body, a depth self-detection unit, a soil resistance detection unit and a positioning unit. The control module is matched with the intelligent grounding pile module to receive the geographic position coordinates, verify the geographic position coordinates with a preset maintenance area, generate a grounding completion signal when the depth and the resistance value meet preset standards, and trigger an alarm and lock a subsequent operation authority when the depth or the resistance value does not meet the standards; the terrain clearance detection unit monitors the terrain clearance of an operator in real time; after receiving the grounding completion signal, the safety interlocking unit unlocks the ground clearance detection unit and dynamically controls the operation authority of the power grid switch equipment according to data returned by the ground clearance detection unit; according to the invention, more rigorous and safer maintenance operation guarantee can be realized.

Description

TECHNICAL FIELD

[0002] The present application relates to the field of electronic technology, in particular to a high-voltage power grid outage maintenance grounding protection system and an implementation method thereof. BACKGROUND

[0004] When the power line is out of service for maintenance, technical measures must be taken to ensure the safety of the workers, that is, a grounding wire is installed on each side where power may come from, which serves to protect the work site from being at "ground potential" at all times. At the same time, it can also prevent the harm of residual charge and induced charge to the human body. In the event of a mis-sending point, the protection can act to quickly cut off the power supply, preventing dangerous voltage and arc generated by accidental power. In the existing outdoor grounding, the worker installs the grounding wire on the grounding stake and inserts the grounding stake into the ground for grounding. However, such treatment has many hidden dangers. On the one hand, due to the influence of some terrain, such as gravel terrain, the depth of insertion cannot be guaranteed, and it cannot be intuitively judged whether the grounding is reliable, which may result in misoperation. On the other hand, in some field operation sites, some workers intentionally do not insert the grounding stake due to laziness, which also leads to serious safety hazards. In view of the above problems, it is necessary to design a high-voltage power grid outage maintenance grounding protection system and an implementation method thereof. SUMMARY

[0005] The present application aims at the deficiencies of the prior art, and provides a high-voltage power grid outage maintenance grounding protection system and an implementation method thereof, which can well solve the above problems.

[0006] To achieve the above requirements, the technical scheme adopted by the present application to solve its technical problems is: The present application provides a high-voltage power grid outage maintenance grounding protection system and an implementation method thereof, which comprises: An intelligent grounding stake module, which comprises a grounding stake control host, a grounding stake body, a depth self-checking unit, a soil resistance detection unit and a positioning unit; wherein The depth self-checking unit is configured to detect the depth of the grounding stake body inserted into the ground and compare it with a preset standard; The soil resistance detection unit is configured to measure the resistance value between the grounding stake and the ground; The positioning unit is configured to obtain the geographic position coordinates of the grounding stake; The system further comprises a control module in communication connection with the intelligent grounding stake module, and the control module is configured to: receive the geographic position coordinates and perform matching verification with a preset maintenance area; and when the depth and the resistance value both meet preset standards, a grounding completion signal is generated; and when the depth or the resistance value is substandard, an alarm is triggered and subsequent operation authority is locked; The system further comprises a ground clearance detection unit configured to be bound to a worker after grounding operation is completed and to monitor ground clearance of the worker in real time; The system further comprises a safety interlocking unit configured to: after receiving the grounding completion signal, the ground clearance detection unit is unlocked; and according to data returned by the ground clearance detection unit, operation authority of a power grid switching device is dynamically controlled.

[0007] The high-voltage power grid outage maintenance grounding protection system, wherein the positioning unit comprises: a Beidou / GPS dual-mode positioning chip configured to receive pre-input fuzzy area coordinates in a maintenance task; a maintenance worker terminal configured to upload corrected accurate coordinates at a work site to trigger start authorization of the intelligent grounding pile module; wherein a deviation threshold of the fuzzy area coordinates and the accurate coordinates does not exceed a preset radius range.

[0008] The high-voltage power grid outage maintenance grounding protection system, wherein the grounding pile body is of a spiral structure; the intelligent grounding pile module further comprises a rotation driving unit configured to drive the grounding pile body to rotate and insert into the ground. wherein the rotation driving unit is configured to automatically rotate into the ground to a preset depth according to an instruction of the control module and lock a position of the grounding pile body after the preset depth is reached.

[0009] The high-voltage power grid outage maintenance grounding protection system, wherein the soil resistance detection unit is further configured to detect resistivity between two longitudinally adjacent spiral segments of the grounding pile body. The soil resistance detection unit comprises a plurality of resistance detection sensors, and the resistance detection sensors are arranged on an axial side wall of the spiral segment of the grounding pile body.

[0010] The high-voltage power grid outage maintenance grounding protection system, wherein the control module at least comprises: a biometric recognition unit configured to verify an operator identity through fingerprint or face verification; an operation log generation unit configured to bind and store the depth, the resistance value, the geographic position coordinates and the operator identity to a background server.

[0011] The high-voltage power grid outage maintenance grounding protection system of the present invention, wherein the safety interlocking unit is further configured as follows: When the ground clearance detection unit is unlocked and detects that the worker's ground clearance exceeds the safety threshold, a voice alarm is triggered and a real-time video is sent to the back-end monitoring terminal via video call. The power outage state must not be lifted until the grounding completion signal is received.

[0012] The high-voltage power grid power outage maintenance grounding protection system of the present invention, wherein the safety interlocking unit is configured to trigger the circuit breaker connected to the power grid dispatching system to trip and block the power supply command when a sudden change in grounding resistance or an abnormal current is detected.

[0013] The high-voltage power grid outage maintenance grounding protection system of the present invention, wherein the ground clearance detection unit includes: Wearable barometer and inertial measurement unit for real-time monitoring of workers' height above the ground; The initial height locking module is configured to record the ground reference height before grounding operations and unlock it when maintenance begins.

[0014] Furthermore, this invention also provides a method for grounding protection during high-voltage power grid outages, characterized by comprising the following steps: Receive maintenance task information and push the target area coordinates to the operator's terminal; The positioning unit verifies that the operator has arrived at the designated area and receives the accurate coordinates after on-site correction. The intelligent grounding pile module is activated to detect the insertion depth and soil resistivity. After the depth and resistance values ​​meet the standards, the ground clearance detection unit is unlocked and linked to the operator. Real-time monitoring of ground clearance; if the height exceeds the safety threshold or grounding parameters are abnormal, an alarm is triggered and power grid operation privileges are locked.

[0015] The high-voltage power grid power outage maintenance grounding protection method of the present invention further includes: After the ground clearance detection unit is unlocked, the system automatically checks the current grounding depth and resistance value. If the check fails to meet the standard, a voice alarm is triggered and the operator is required to provide real-time feedback on the operation via video call. All operational data is uploaded to the blockchain platform in real time, generating encrypted operation logs for later auditing and traceability.

[0016] The beneficial effects of this invention are as follows: from task assignment, location confirmation, grounding verification to high-altitude operations, it achieves closed-loop management of "people-equipment-system," eliminates human error loopholes, and enables full-process digital management; moreover, the real-time interaction between on-site operation data and back-end monitoring instructions ensures second-level response to abnormal events, achieving real-time two-way feedback. By integrating positioning verification, off-ground monitoring, and mandatory parameter interlocking, a "zero-trust" safety system for power grid maintenance and grounding operations has been constructed, effectively addressing core risks such as position deviation, parameter falsification, and lack of monitoring in traditional operations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort: Figure 1 This is a flowchart of the implementation steps of the high-voltage power grid power outage maintenance grounding protection system of the present invention. Detailed Implementation

[0018] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0021] Furthermore, the terms indicating orientation, such as "up," "down," "left," "right," "upper end," "lower end," and "longitudinal," are all based on the posture and position of the device or equipment described in this solution during normal use.

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0023] A preferred embodiment of the high-voltage power grid power outage maintenance grounding protection system of the present invention, such as... Figure 1 As shown, the system includes an intelligent grounding pile module, which includes a grounding pile control host, a grounding pile body, a depth self-testing unit, a soil resistance detection unit, and a positioning unit. The depth self-test unit is configured to detect the depth of the grounding stake body inserted into the ground and compare it with a preset standard. Specifically, the depth self-test unit uses the rotation angle and torque feedback of the grounding stake body to detect the depth in the initial stage. This can prevent the system from spinning idly and deceiving the system by faking rotation insertion, and further ensure the safety of operation. The soil resistance detection unit is configured to measure the resistance between the grounding stake and the ground. The positioning unit is configured to obtain the geographical coordinates of the grounding stake; The high-voltage power grid outage maintenance grounding protection system also includes a control module, which is communicatively connected to the grounding pile control host of the intelligent grounding pile module. The control module is configured as follows: Receive geographic location coordinates and match and verify them with the preset maintenance area; And when both the depth and resistance value meet the preset standards, a grounding completion signal is generated; And when the depth or resistance value is not up to standard, an alarm is triggered and subsequent operation permissions are locked; Furthermore, the high-voltage power grid outage maintenance grounding protection system also includes a ground clearance detection unit, which is configured to be bound to the operator after the grounding operation is completed and to monitor the operator's ground clearance in real time. The high-voltage power grid outage maintenance grounding protection system also includes a safety interlocking unit, which is configured as follows: Upon receiving the grounding completion signal, the ground clearance detection unit is unlocked; Based on the data returned by the ground clearance detection unit, the operating permissions of the power grid switching equipment are dynamically controlled.

[0024] This system enables closed-loop management of "people-equipment-system" from task assignment, location confirmation, grounding verification to high-altitude operations, eliminating human error loopholes and achieving full-process digital management. Moreover, the real-time interaction between on-site operation data and back-end monitoring instructions ensures second-level response to abnormal events and achieves real-time two-way feedback. By integrating location verification, off-ground monitoring, and parameter mandatory interlocking, a "zero-trust" safety system for power grid maintenance grounding operations is constructed, effectively solving core risks such as position deviation, parameter falsification, and lack of monitoring in traditional operations.

[0025] In this embodiment, the positioning unit includes: The BeiDou / GPS dual-mode positioning chip is configured to receive pre-input fuzzy area coordinates during maintenance tasks; The maintenance personnel terminal is configured to upload the corrected and precise coordinates at the work site, triggering the start authorization of the smart grounding pile module; Among them, the deviation threshold between the coordinates of the fuzzy area and the precise coordinates shall not exceed the preset radius range.

[0026] In this embodiment, the grounding pile body has a spiral structure; specifically, the intelligent grounding pile module also includes a rotation drive unit that drives the grounding pile body to rotate and insert into the ground, and the rotation drive unit is located at the upper end of the grounding pile body. The rotary drive unit is configured to automatically rotate into the ground to a preset depth according to the instructions of the control module, and lock the position of the grounding stake body after reaching the preset depth. The rotary drive unit specifically includes a rotary motor, a transmission gear set for connecting the rotating shaft of the rotary motor to the upper end of the grounding stake body, and a controller for controlling the rotary motor and communicating with the control module. The correspondence between the number of rotations of the rotary motor and the insertion depth of the grounding stake body can be realized by an angle encoder. The encoder can indirectly know the insertion depth of the grounding stake body by detecting a certain number of rotations of the rotary motor. Specifically, the encoder adopts the AS5048A high-precision magnetic angle encoder (14-bit resolution, ±0.05° accuracy), and the torque of the rotary motor can be realized by integrating a TS-2000 series dynamic torque sensor (range 0-200 N·m, sampling rate 1 kHz).

[0027] Specifically, in order to enable the grounding pile body to rotate while also moving longitudinally, the upper end of the grounding pile body can be designed as a vertical spline shaft that is coaxial and concentric with the helical section, and a spline sleeve is fitted on the outside of the spline shaft. The outer wall of the spline sleeve is horizontally meshed with the transmission gear set. When the rotary motor rotates, it drives the spline sleeve to rotate, which in turn drives the spline shaft to rotate while it can be screwed downwards into the ground.

[0028] The insertion depth of the grounding stake can be calculated using a depth prediction model, which is as follows: ; Where D: actual insertion depth (mm); n: Rotational motor speed; P: Pitch of the helical pile (mm); α: Coefficient of thermal expansion of the material; T: Ambient temperature (°C); β: Torque attenuation coefficient; τ: Real-time torque value (N·m).

[0029] In this embodiment, the soil resistance detection unit is also configured to detect the resistivity between two longitudinally adjacent helical segments of the grounding pile body. The soil resistance detection unit includes multiple resistance sensors, with each sensor mounted on the axial sidewall of a helical segment of the grounding pile body. These sensors are specifically Pt-Ir alloy electrodes, with the spacing between adjacent electrodes set to 20mm and the axial spacing to 50mm. The scanning method employs time-division multiplexing (scanning period <100ms). The resistivity can be calculated using a resistivity model. To ensure stability and high measurement accuracy, a three-dimensional resistivity distribution can be established based on the improved Wenner four-electrode method. ; in: ρ a Apparent resistivity (Ω·m); a: Electrode spacing (m); V1-V2: Potential difference measurement (V); I: Injected current (A); K geo Geometric correction coefficients are calculated based on the characteristics of the helical surface. Specifically, they can be calculated using a three-dimensional integral equation: ; In the above formula: R(θ): The function of the helical blade radius as a function of the rotation angle, calculated by R0+ΔRsin(2θ), where ΔR is the radius fluctuation caused by the blade thickness; h(θ): Axial displacement of the helix, which is related to the pitch P and is calculated by Pθ / 2π; r: the equivalent radius of the measuring electrode; A is the electrode contact area, calculated from the measured value. The model solves the problem of resistivity measurement distortion caused by curved surfaces by integrating spiral geometric parameters and electric field distribution, which can greatly reduce the apparent resistivity error in grounding pile detection.

[0030] In practice, soil resistance samples from the maintenance point, especially those near the power tower, can be pre-stored into the system to form a range resistance value database. When the grounding stake is inserted into the ground, its resistance changes are generally recorded in the database. This measure can be used to further prevent operators from inserting the grounding stake into non-compliant locations to deceive the system.

[0031] In this embodiment, the control module includes: The biometric unit is configured to verify the operator's identity via fingerprint or facial recognition; The operation log generation unit is configured to bind and store depth, resistance value, geographic location coordinates and operator identity to the backend server; The main control unit is configured to communicate with the backend server to receive information from the organism identification unit, the operation log generation unit, and other modules, and to control the rotation drive unit.

[0032] In this embodiment, the safety interlocking unit is further configured as follows: When the ground clearance detection unit is unlocked and detects that the worker's ground clearance exceeds the safety threshold, a voice alarm is triggered and a real-time video is sent to the back-end monitoring terminal via video call. Furthermore, the power outage status must not be lifted until a grounding completion signal is received.

[0033] In this embodiment, the safety interlocking unit is configured to trigger the circuit breaker connected to the power grid dispatching system to trip and block the power supply command when a sudden change in grounding resistance or an abnormal current is detected.

[0034] Furthermore, the confirmation information after the grounding of the grounding stake body is compliant can be further bound to the operation sequence of the grounding stake body and the insulated hanging rod connected to it, so that the grounding personnel strictly follow the order of "grounding end first, then conductor end". This method can effectively prevent the grounding personnel from reversing the order or operating without confirming that the equipment is de-energized, which could lead to electric shock accidents. Especially in complex power grid structures (such as multiple power sources or ring network power supply), it can greatly reduce the risk of grounding personnel not fully understanding the power outage area and possibly misjudging the live equipment, which could lead to serious misoperation.

[0035] In addition, to ensure sufficient and stable contact between the pole and the power line, an intelligent tightening module controlled by the main control unit can be integrated into the clamping head of the pole. When the pole is hung on the power line, the positioning information provided by the sensor triggers the main control unit to control the execution unit of the intelligent tightening module to clamp the clamping head of the pole onto the power line.

[0036] Additional hanging wires Furthermore, this system may also include: The local audible and visual alarm device is configured to emit a buzzer warning and LED flashing signal when the grounding parameters are not up to standard; The remote linkage alarm module is configured to send alarm information to the back-end monitoring terminal, including the type of violation, geographical location, and operator identity.

[0037] In this embodiment, the ground clearance detection unit includes: Wearable barometer and inertial measurement unit for real-time monitoring of workers' height above the ground; The initial height locking module is configured to record the ground reference height before grounding operations and unlock it when maintenance begins.

[0038] In addition, the protection methods for the high-voltage power grid outage maintenance grounding system, such as Figure 1 As shown, the method includes the following steps: Step S10: Receive maintenance task information and push the target area coordinates to the operator's terminal; Step S20: Verify that the operator has arrived at the designated area through the positioning unit and receive the accurate coordinates after on-site correction; Step S30: Activate the intelligent grounding pile module to detect the insertion depth and soil resistivity; Step S40: After the depth and resistance values ​​meet the standards, unlock the ground clearance detection unit and bind it to the operator; Step S50: Monitor the height above the ground in real time. If the height exceeds the safety threshold or the grounding parameters are abnormal, trigger an alarm and lock the power grid operation privileges.

[0039] Furthermore, the above methods also include: Step S60: After the ground clearance detection unit is unlocked, the system automatically rechecks the current grounding depth and resistance value. If the recheck fails to meet the standard, a voice alarm is triggered and the operator is required to provide real-time feedback on the operation via video call. Step S70: All operation data is uploaded to the blockchain platform in real time to generate encrypted operation logs for later auditing and traceability.

[0040] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A high-voltage power grid outage maintenance grounding protection system, characterized in that, The system includes: The intelligent grounding pile module includes a grounding pile control host, a grounding pile body, a depth self-test unit, a soil resistance detection unit, and a positioning unit; among which... The depth self-test unit is configured to detect the depth of the grounding stake body inserted into the ground and compare it with a preset standard; The soil resistance detection unit is configured to measure the resistance value between the grounding stake and the ground. The positioning unit is configured to obtain the geographical coordinates of the grounding stake; The system also includes a control module, which is communicatively connected to the intelligent grounding pile module. The control module is configured to: Receive the geographic location coordinates and match and verify them with the preset maintenance area; And when both the depth and the resistance value meet the preset standards, a grounding completion signal is generated; And when the depth or the resistance value is not up to standard, an alarm is triggered and subsequent operation permissions are locked; The system also includes a ground clearance detection unit, configured to be attached to the operator after the grounding operation is completed and to monitor the operator's ground clearance in real time; The system also includes a safety interlock unit, configured as follows: Upon receiving the grounding completion signal, the ground clearance detection unit is unlocked; Based on the data returned by the ground clearance detection unit, the operating permissions of the power grid switching equipment are dynamically controlled.

2. The high-voltage power grid power outage maintenance grounding protection system according to claim 1, characterized in that, The positioning unit includes: The BeiDou / GPS dual-mode positioning chip is configured to receive pre-input fuzzy area coordinates during maintenance tasks; The maintenance personnel terminal is configured to upload the corrected and precise coordinates at the work site, triggering the start authorization of the smart grounding pile module; Wherein, the deviation threshold between the coordinates of the fuzzy region and the precise coordinates does not exceed a preset radius range.

3. The high-voltage power grid power outage maintenance grounding protection system according to claim 1, characterized in that, The grounding pile body has a spiral structure; the intelligent grounding pile module also includes a rotation drive unit that drives the grounding pile body to rotate and insert into the ground. The rotary drive unit is configured to automatically rotate into the ground to a preset depth according to the instructions of the control module, and lock the position of the grounding pile body after reaching the preset depth.

4. The high-voltage power grid power outage maintenance grounding protection system according to claim 3, characterized in that, The soil resistance detection unit is also configured to detect the resistivity between two longitudinally adjacent helical segments of the grounding pile body. The soil resistance detection unit includes multiple resistance detection sensors, and the resistance detection sensors are provided on the axial sidewall of the helical section of the grounding pile body.

5. The high-voltage power grid power outage maintenance grounding protection system according to claim 1, characterized in that, The control module includes at least: The biometric unit is configured to verify the operator's identity via fingerprint or facial recognition; The operation log generation unit is configured to bind and store the depth, resistance value, geographic location coordinates, and operator identity to the backend server.

6. The high-voltage power grid power outage maintenance grounding protection system according to claim 1, characterized in that, The safety interlock unit is also configured to: When the ground clearance detection unit is unlocked and detects that the worker's ground clearance exceeds the safety threshold, a voice alarm is triggered and a real-time video is sent to the back-end monitoring terminal via video call. The power outage state must not be lifted until the grounding completion signal is received.

7. The high-voltage power grid power outage maintenance grounding protection system according to claim 6, characterized in that, The safety interlocking unit is configured to trigger the circuit breaker connected to the power grid dispatching system to trip and block the power supply command when a sudden change in grounding resistance or an abnormal current is detected.

8. The high-voltage power grid power outage maintenance grounding protection system according to claim 1, characterized in that, The ground clearance detection unit includes: Wearable barometer and inertial measurement unit for real-time monitoring of workers' height above the ground; The initial height locking module is configured to record the ground reference height before grounding operations and unlock it when maintenance begins.

9. A method for grounding protection during power outage maintenance in a high-voltage power grid, characterized in that, Includes the following steps: ‌ Receive maintenance task information and push the target area coordinates to the operator's terminal; The positioning unit verifies that the operator has arrived at the designated area and receives the accurate coordinates after on-site correction. The intelligent grounding pile module is activated to detect the insertion depth and soil resistivity. After the depth and resistance values ​​meet the standards, the ground clearance detection unit is unlocked and linked to the operator. Real-time monitoring of ground clearance; if the height exceeds the safety threshold or grounding parameters are abnormal, an alarm is triggered and power grid operation privileges are locked.

10. The method according to claim 9, characterized in that, Also includes: ‌ After the ground clearance detection unit is unlocked, the system automatically checks the current grounding depth and resistance value. If the check fails to meet the standard, a voice alarm is triggered and the operator is required to provide real-time feedback on the operation via video call. All operational data is uploaded to the blockchain platform in real time, generating encrypted operation logs for later auditing and traceability.

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