Combination gap checking method for hot-line work of high-voltage power transmission channel

Abstract

The invention discloses a combined gap checking method for hot-line work of a high-voltage power transmission channel, and relates to the technical field of hot-line work. Capturing joint information of a maintainer in real time, and updating the initial three-dimensional geometric model according to the joint information to obtain a three-dimensional geometric model; performing electrostatic field solution domain on the three-dimensional geometric model, performing electrostatic field simulation to obtain target electric field distribution, and determining a minimum high-voltage boundary gap and a minimum grounding boundary gap according to the target electric field distribution; calculating a high-voltage boundary gap, a grounding boundary gap and a total gap in real time; and according to the high-voltage boundary gap, the grounding boundary gap, the total gap, the minimum high-voltage boundary gap, the minimum grounding boundary gap and a preset minimum total gap, determining a maintenance worker working specification. Posture updating is carried out by capturing joint information of a maintainer in real time, target electric field distribution is calculated through electrostatic field simulation, a high-voltage boundary gap and a grounding boundary gap are accurately evaluated, and therefore the risk of electric shock or electric shock of operators is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of live working, and in particular relates to a combined gap verification method for live working on a high-voltage transmission channel. Background Art

[0002] High-voltage transmission lines are an important part of the power system. With the continuous increase in social electricity consumption, the maintenance demand for transmission lines is increasing. In order to avoid the inconvenience caused by power outages to users, live working has become an important maintenance method. Live working refers to the inspection and maintenance of equipment without cutting off the power supply of the transmission line. Through this technology, the continuity of power supply can be effectively guaranteed and the social and economic losses caused by power outages can be reduced. However, live working has great safety risks. Affected by the electric field generated by the transmission line, live workers on high-voltage transmission lines are in a dangerous working environment. The influence of electromagnetic fields and the threat of high voltage to the human body cannot be ignored. During live working, the safe distance between operators and tools and high-voltage power sources must be strictly controlled to ensure personal safety and equipment safety.

[0003] In the prior art, a static safety distance standard is usually used for verification, that is, a fixed safety distance is pre-set according to the operating voltage level. This static standard is based on theoretical calculations and empirical summaries, and can guarantee the safety of operators to a certain extent. However, this method has limitations in actual operation and cannot fully cope with the dynamic changes in the working environment. For example, factors such as changes in human posture and load current of the line during operation will affect the electric field distribution in live operations, thereby affecting the actual safety distance requirements and increasing the risk of electric shock or electric shock to operators. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the actual safety distance requirement cannot be determined, which increases the risk of electric shock or electric shock for operators, and proposes a combined gap calibration method for live operations in high-voltage transmission channels.

[0005] The present invention provides a method for checking the combined gap of live working on a high-voltage transmission channel, the method comprising:

[0006] Acquire an initial three-dimensional geometric model of a maintenance worker performing live-line work in a target area; the initial three-dimensional geometric model includes the spatial distribution of high-voltage lines and the spatial distribution of the maintenance worker's posture;

[0007] Capturing joint information of the maintenance worker in real time, and updating the spatial distribution of the maintenance worker's posture according to the joint information to obtain a three-dimensional geometric model; the joint information includes the rotation angle and movement distance of each joint of the maintenance worker;

[0008] Performing electrostatic field domain solving on the three-dimensional geometric model, and performing electrostatic field simulation calculation to obtain a target electric field distribution, and determining a minimum high-voltage boundary gap and a minimum ground boundary gap according to the target electric field distribution;

[0009] Calculate in real time the high-voltage boundary gap between the maintenance worker and the high-voltage equipment and the ground boundary gap between the maintenance worker and the grounding body, and record the sum of the high-voltage boundary gap and the ground boundary gap as the total gap;

[0010] The maintenance worker's work specification is determined according to the high-voltage boundary gap, the ground boundary gap, the total gap, the minimum high-voltage boundary gap, the minimum ground boundary gap and a preset minimum total gap.

[0011] Optionally, before obtaining the initial three-dimensional geometric model of the maintenance worker performing live-line work in the target area, the following steps are further included:

[0012] The voltage of the high-voltage transmission channel in the target area is obtained, and the requirements of the high-voltage boundary clearance and the ground boundary clearance of the live working in the preset specification file are found according to the voltage to obtain the working clearance specification;

[0013] Maintenance workers perform live work according to the working clearance specifications.

[0014] Optionally, obtaining an initial 3D geometric model of a maintenance worker performing live-line work in a target area includes:

[0015] The spatial coordinate data, height, inclination and relative position of the high-voltage line are obtained by using a laser rangefinder to obtain first data, and the first data is substituted into 3D software for three-dimensional modeling to obtain the spatial distribution of the high-voltage line;

[0016] Acquire the body shape information of the maintenance worker, and substitute the body shape information into the human body model library built into the 3D software to obtain an initial human body geometry model;

[0017] The second data is obtained by acquiring the joint data of the maintenance worker during the current work through a motion sensor; the motion sensor is installed at the joint of the maintenance worker;

[0018] The initial human body geometry model is adjusted according to the second data to obtain a target human body geometry model, and the target human body geometry model is mapped to the spatial distribution of the high-voltage line to obtain the spatial distribution of the maintenance worker's posture.

[0019] Optionally, capturing joint information of the maintenance worker in real time, and updating the posture spatial distribution of the maintenance worker according to the joint information to obtain a three-dimensional geometric model includes:

[0020] Acquire the joint information set of the maintenance worker in real time through the motion sensor, and generate a transformation matrix for each joint information to obtain a joint transformation matrix set;

[0021] For each joint transformation matrix in the joint transformation matrix set, multiply the joint transformation matrix by the joint information of the joint point corresponding to the joint transformation matrix to obtain the target joint information of the joint point;

[0022] The posture spatial distribution of the maintenance worker is updated according to the target joint information corresponding to all relevant nodes to obtain a three-dimensional geometric model.

[0023] Optionally, performing electrostatic field domain dedomaining on the three-dimensional geometric model and performing electrostatic field simulation calculation to obtain a target electric field distribution includes:

[0024] Taking the maintenance worker as the center and 6 times of the maintenance worker's arm length as the length, intercept the space region including the maintenance worker and the high-voltage line in the three-dimensional geometric model to obtain the electrostatic field solution space;

[0025] For the electrostatic field solution space, the surface of the high-voltage line is recorded as the Dirichlet boundary of the known voltage, and the grounding point of the maintenance worker is recorded as the zero potential boundary; the known voltage is the voltage value of the transmission line;

[0026] For the maintenance worker surface in the electrostatic field solution space, a finite element analysis is performed after floating potential processing to obtain a target electric field distribution.

[0027] Optionally, determining the minimum high voltage boundary gap and the minimum ground boundary gap according to the target electric field distribution includes:

[0028] According to the target electric field distribution, the electric field strength and the voltage difference at the position where the maintenance worker's surface is closest to the high-voltage line are obtained to obtain a first target electric field strength and a first voltage difference, and a minimum high-voltage boundary gap is determined according to the first target electric field strength and the first voltage difference;

[0029] The electric field strength and voltage difference between the maintenance worker surface and the ground are obtained to obtain a second target electric field strength and a second voltage difference, and a minimum ground boundary gap is determined according to the second target electric field strength and the second voltage difference.

[0030] Optionally, determining the maintenance worker work specification according to the high-voltage boundary gap, the ground boundary gap, the total gap, the minimum high-voltage boundary gap, the minimum ground boundary gap, and a preset minimum total gap includes:

[0031] If the high-voltage boundary gap is less than or equal to the minimum high-voltage boundary gap, an alarm to stay away from the high-voltage line is issued;

[0032] If the ground boundary gap is less than or equal to the minimum ground boundary gap, an alarm of being far away from the ground is issued;

[0033] If the high-voltage boundary gap is greater than the minimum high-voltage boundary gap, the ground boundary gap is greater than the minimum ground boundary gap, but the total gap is less than the preset minimum total gap, a warning to stop operation is issued.

[0034] Beneficial effects of the present invention:

[0035] The present invention proposes a combined gap verification method for live working on a high-voltage transmission channel, which obtains an initial three-dimensional geometric model of a maintenance worker performing live working in a target area; the initial three-dimensional geometric model includes the spatial distribution of high-voltage lines and the spatial distribution of the maintenance worker's posture; the joint information of the maintenance worker is captured in real time, and the spatial distribution of the maintenance worker's posture is updated according to the joint information to obtain a three-dimensional geometric model; the joint information includes the rotation angle and movement distance at each joint of the maintenance worker; the three-dimensional geometric model is subjected to electrostatic field domain solving, and electrostatic field simulation calculation is performed to obtain the target electric field distribution, and the minimum high-voltage boundary gap and the minimum grounding boundary gap are determined according to the target electric field distribution; the high-voltage boundary gap between the maintenance worker and the high-voltage equipment and the grounding boundary gap between the maintenance worker and the grounding body are calculated in real time, and the sum of the high-voltage boundary gap and the grounding boundary gap is recorded as the total gap; the maintenance worker's work specification is determined according to the high-voltage boundary gap, the grounding boundary gap, the total gap, the minimum high-voltage boundary gap, the minimum grounding boundary gap and the preset minimum total gap. By capturing the maintenance worker's joint information in real time to update his posture, dynamic monitoring can better respond to changes in the working environment and ensure the real-time effectiveness of the safety distance. By using electrostatic field simulation to calculate the target electric field distribution, the high-voltage boundary gap and the ground boundary gap can be evaluated more accurately and in real time, thereby reducing the risk of electric shock or electric shock for workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will be further described below in conjunction with the accompanying drawings.

[0037] Figure 1 A flow chart of a combined gap verification method for live working on a high-voltage transmission channel is provided for an embodiment of the present invention;

[0038] Figure 2 A flow chart of another combined gap verification method for live working on a high-voltage transmission channel is provided for an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The term "and / or" herein is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the present invention, the description of "first", "second", etc. is only used for descriptive purposes, and cannot be understood as indicating or implying its relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0041] The embodiment of the present invention provides a method for checking the combined clearance of live working on a high-voltage transmission channel. Figure 1 , Figure 1 A flowchart of a combined gap verification method for live working on a high-voltage transmission channel provided by an embodiment of the present invention. The method comprises the following steps:

[0042] S101, obtaining an initial three-dimensional geometric model of a maintenance worker performing live-line work in a target area;

[0043] S102, capturing the joint information of the maintenance worker in real time, and updating the posture spatial distribution of the maintenance worker according to the joint information to obtain a three-dimensional geometric model;

[0044] S103, performing electrostatic field domain dedomaining on the three-dimensional geometric model, and performing electrostatic field simulation calculation to obtain a target electric field distribution, and determining a minimum high-voltage boundary gap and a minimum ground boundary gap according to the target electric field distribution;

[0045] S104, calculating in real time the high-voltage boundary gap between the maintenance worker and the high-voltage equipment and the ground boundary gap between the maintenance worker and the grounding body, and recording the sum of the high-voltage boundary gap and the ground boundary gap as the total gap;

[0046] S105, determining the maintenance worker's work specification according to the high-voltage boundary gap, the ground boundary gap, the total gap, the minimum high-voltage boundary gap, the minimum ground boundary gap and the preset minimum total gap.

[0047] Among them, the initial three-dimensional geometric model includes the spatial distribution of high-voltage lines and the spatial distribution of the maintenance worker's posture; the joint information includes the rotation angle and movement distance of each joint of the maintenance worker.

[0048] A combined gap verification method for live working on a high-voltage transmission channel provided in an embodiment of the present invention captures the joint information of the maintenance worker in real time to update the posture, and can better cope with changes in the working environment through dynamic monitoring to ensure the real-time effectiveness of the safety distance. The target electric field distribution is calculated by electrostatic field simulation, and the high-voltage boundary gap and the ground boundary gap can be evaluated more accurately and in real time, thereby reducing the risk of electric shock or electric shock for the workers.

[0049] In one implementation, by real-time monitoring of the maintenance worker's posture and the gap with the high-voltage equipment, the risk of electric shock during the operation can be effectively reduced, ensuring that the maintenance worker works within a safe range; real-time capture and update of the maintenance worker's joint information can adapt to different working environments and postures, making the calculation of the high-voltage boundary and ground boundary gap more accurate; the target area is the area to be operated, and the preset minimum total gap is determined by searching the preset specification file; electrostatic field domain solution refers to the three-dimensional space area for electrostatic field analysis.

[0050] In one implementation, electrostatic field simulation calculations can be used to more accurately evaluate the electric field distribution around high-voltage lines, ensuring that maintenance work does not affect the normal operation of equipment while ensuring the safety of maintenance workers. Based on the boundary clearances and minimum requirements calculated in real time, clear work specifications can be formulated, thereby improving the degree of work standardization and reducing human errors.

[0051] In one implementation, by analyzing the impact of different postures and working environments on the electric field distribution, potential risks can be identified in advance and preventive maintenance can be promoted. Combining three-dimensional models and real-time data can provide intelligent support for operations, improve work efficiency and safety, and promote technological progress in the industry.

[0052] In one embodiment, before obtaining the initial three-dimensional geometric model of the maintenance worker performing live-line work in the target area, the method further includes:

[0053] Obtain the voltage of the high-voltage transmission channel in the target area, and find the requirements of the high-voltage boundary clearance and ground boundary clearance of live work in the preset specification file according to the voltage to obtain the working clearance specification;

[0054] Maintenance workers perform live work according to the working clearance specifications.

[0055] In one implementation, by searching preset specification files, it is possible to ensure that the maintenance worker's working clearance complies with industry standards, thereby improving the safety of the operation; accurately obtaining the voltage of the high-voltage transmission channel and setting the working clearance according to the specifications helps reduce the risk of electric shock and protect the safety of the maintenance worker.

[0056] In one implementation, the preset specification file may be GB / Z 43963-2024 or a more stringent standard developed by technical personnel based on the specification file GB / Z 43963-2024.

[0057] In one embodiment, see Figure 2 , step S101 includes:

[0058] S1011, obtaining spatial coordinate data, height, inclination and relative position of the high-voltage line by using a laser rangefinder to obtain first data, and substituting the first data into 3D software for three-dimensional modeling to obtain spatial distribution of the high-voltage line;

[0059] S1012, obtaining the body shape information of the maintenance worker, and substituting the body shape information into a human body model library built into the 3D software to obtain an initial human body geometric model;

[0060] S1013, obtaining the joint data of the maintenance worker during the current work through the motion sensor to obtain second data;

[0061] S1014, adjusting the initial human body geometry model according to the second data to obtain a target human body geometry model, and mapping the target human body geometry model to the spatial distribution of the high-voltage line to obtain the spatial distribution of the maintenance worker's posture.

[0062] Among them, motion sensors are installed on the joints of the maintenance worker.

[0063] In one implementation, a laser rangefinder and 3D software can be used to accurately obtain the spatial distribution of high-voltage lines and improve the accuracy of the model. An initial human body geometry model is generated based on the body shape information of the maintenance worker to ensure that the model can truly reflect the physical characteristics of the maintenance worker.

[0064] In one implementation, motion sensors are used to capture joint data in real time, which can quickly adjust the human body model to reflect the maintenance worker's actual posture; by mapping the maintenance worker's posture to the spatial distribution of high-voltage lines, preparations can be made for subsequent timely identification of potential safety risks.

[0065] In one implementation, the laser rangefinder can be any laser rangefinder available on the market, which will not be introduced in detail here; the coordinate origin of the distance measurement is any tower foot in the transmission tower; the 3D software can be AutoCAD, SolidWorks, 3ds Max, etc.; the joint data is the joint position, rotation angle and offset.

[0066] In one implementation, the motion sensor includes a three-axis accelerometer and a three-axis gyroscope. The three-axis accelerometer is used to detect the acceleration changes of an object in three-dimensional space, thereby inferring its posture and direction; the three-axis gyroscope is used to monitor the rotation speed of the object in three axes in real time, and provide dynamic posture information to help analyze the rotation and tilt changes of the object in space. It is used for motion capture and virtual reality, and is used in combination with the accelerometer to improve the accuracy and reliability of posture estimation.

[0067] In one embodiment, capturing the joint information of the maintenance worker in real time and updating the posture spatial distribution of the maintenance worker according to the joint information to obtain a three-dimensional geometric model includes:

[0068] The joint information set of the maintenance worker is obtained in real time through the motion sensor, and a transformation matrix is ​​generated for each joint information to obtain a joint transformation matrix set;

[0069] For each joint transformation matrix in the joint transformation matrix set, multiply the joint transformation matrix by the joint information of the joint point corresponding to the joint transformation matrix to obtain the target joint information of the joint point;

[0070] The maintenance worker's posture spatial distribution is updated according to the target joint information corresponding to all relevant nodes to obtain a three-dimensional geometric model.

[0071] In one implementation, a transformation matrix is ​​generated for each joint, which can accurately describe the position and posture of the joint and enhance the accuracy of the three-dimensional model. By using the joint transformation matrix set, the impact of each joint on the overall posture can be deeply analyzed, which helps to optimize the recognized working posture. Through real-time updated models, the distance between maintenance workers and high-voltage equipment can be better monitored to reduce safety risks.

[0072] In one implementation, the transformation matrix is ​​generated for each joint by the formula T=M*R; where M is the translation matrix of the joint, x, y, and z are the offsets of the current joint at the current moment relative to the previous moment. The size of the offset in the coordinate system is consistent with that in the three-dimensional geometric model. R is the rotation matrix of the joint. sinα and cosα are the sine and cosine values ​​of the rotation angle around the X-axis of the coordinate system, sinβ and cosβ are the sine and cosine values ​​of the rotation angle around the Y-axis of the coordinate system, and sinλ is the sine value of the rotation angle around the Z-axis of the coordinate system; the coordinate system and the coordinate system in the three-dimensional geometric model are isomorphic coordinate systems.

[0073] In one embodiment, performing electrostatic field domain solving on the three-dimensional geometric model and performing electrostatic field simulation calculation to obtain the target electric field distribution includes:

[0074] Taking the maintenance worker as the center and 6 times of the maintenance worker's arm length as the length, the space region including the maintenance worker and the high-voltage line in the three-dimensional geometric model is intercepted to obtain the electrostatic field solution space;

[0075] For the electrostatic field solution space, the surface of the high-voltage line is recorded as the Dirichlet boundary of the known voltage, and the grounding point of the maintenance worker is recorded as the zero potential boundary; the known voltage is the voltage value of the transmission line;

[0076] For the maintenance worker's surface in the electrostatic field solution space, the target electric field distribution is obtained by finite element analysis after floating potential treatment.

[0077] In one implementation, the electrostatic field solution space centered on the maintenance worker can more realistically simulate the actual working environment and enhance the accuracy of the model; by setting the boundary conditions of the high-voltage line and the maintenance worker, the safety of the maintenance worker in a live environment can be effectively evaluated.

[0078] In one implementation, finite element analysis provides detailed electric field distribution information to help identify potential changes in electric field strength and reduce the risk of electric shock. By analyzing the electric field distribution, safer operating specifications can be developed for maintenance workers to ensure safety during the operation.

[0079] In one embodiment, determining the minimum high voltage boundary gap and the minimum ground boundary gap according to the target electric field distribution includes:

[0080] According to the target electric field distribution, the electric field strength and voltage difference at the point where the maintenance worker's surface is closest to the high-voltage line are obtained to obtain a first target electric field strength and a first voltage difference, and the minimum high-voltage boundary gap is determined according to the first target electric field strength and the first voltage difference;

[0081] The electric field strength and voltage difference between the maintenance worker's surface and the ground are obtained to obtain a second target electric field strength and a second voltage difference, and the minimum ground boundary gap is determined according to the second target electric field strength and the second voltage difference.

[0082] In one implementation, by calculating the electric field strength and voltage difference between the maintenance worker and the high-voltage line and grounding point, the minimum safe clearance can be accurately determined to effectively reduce the risk of electric shock; clear minimum boundary clearance requirements help optimize work processes and operations, reduce unnecessary shutdowns and safety hazards; by monitoring the electric field strength and voltage difference, potential electrical safety hazards can be identified in advance and preventive maintenance can be promoted.

[0083] In one implementation, the minimum high voltage boundary gap is determined according to the first target electric field strength and the first voltage difference, and the minimum ground boundary gap is determined according to the second target electric field strength and the second voltage difference, both of which are obtained by the electric field strength formula U=dE.

[0084] In one embodiment, determining the maintenance worker work specification according to the high voltage boundary gap, the ground boundary gap, the total gap, the minimum high voltage boundary gap, the minimum ground boundary gap, and the preset minimum total gap includes:

[0085] If the high-voltage boundary gap is less than or equal to the minimum high-voltage boundary gap, an alert to stay away from the high-voltage line is issued;

[0086] If the ground boundary gap is less than or equal to the minimum ground boundary gap, an alarm far from the grounding point is issued;

[0087] If the high-voltage boundary gap is greater than the minimum high-voltage boundary gap, the ground boundary gap is greater than the minimum ground boundary gap, but the total gap is less than the preset minimum total gap, a stop operation warning is issued.

[0088] In one implementation, the alarm system can monitor in real time the safe distance between maintenance workers and high-voltage lines and grounding points, and promptly remind workers to enhance safety protection; timely issuing of alarms to stay away from high-voltage lines or grounding points can effectively prevent potential electric shock accidents and protect the safety of maintenance workers; issuing corresponding alarms based on different boundary gap conditions can help maintenance workers take quick action and adjust work strategies.

[0089] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A combined gap verification method for live working in a high-voltage transmission channel, characterized in that: The method comprises: Acquire an initial three-dimensional geometric model of a maintenance worker performing live-line work in a target area; the initial three-dimensional geometric model includes the spatial distribution of high-voltage lines and the spatial distribution of the maintenance worker's posture; Capturing joint information of the maintenance worker in real time, and updating the posture spatial distribution of the maintenance worker according to the joint information to obtain a three-dimensional geometric model; the joint information includes the rotation angle and movement distance of each joint of the maintenance worker; Performing electrostatic field domain solving on the three-dimensional geometric model, and performing electrostatic field simulation calculation to obtain a target electric field distribution, and determining a minimum high-voltage boundary gap and a minimum ground boundary gap according to the target electric field distribution; Calculate in real time the high-voltage boundary gap between the maintenance worker and the high-voltage equipment and the ground boundary gap between the maintenance worker and the grounding body, and record the sum of the high-voltage boundary gap and the ground boundary gap as the total gap; The maintenance worker's work specification is determined according to the high-voltage boundary gap, the ground boundary gap, the total gap, the minimum high-voltage boundary gap, the minimum ground boundary gap and a preset minimum total gap.

2. A combined gap verification method for live working in a high-voltage transmission channel according to claim 1, characterized in that: Before obtaining the initial 3D geometric model of the live maintenance worker working in the target area, it also includes: The voltage of the high-voltage transmission channel in the target area is obtained, and the requirements of the high-voltage boundary clearance and the ground boundary clearance of the live working in the preset specification file are found according to the voltage to obtain the working clearance specification; Maintenance workers perform live work according to the working clearance specifications.

3. The method for checking the combined gap during live working on a high-voltage transmission channel according to claim 1 is characterized in that: The initial 3D geometric model of the maintenance worker working in the target area includes: Acquire spatial coordinate data, height, inclination and relative position of the high-voltage line by using a laser rangefinder to obtain first data, and substitute the first data into 3D software for three-dimensional modeling to obtain spatial distribution of the high-voltage line; Acquire the body shape information of the maintenance worker, and substitute the body shape information into the human body model library built into the 3D software to obtain an initial human body geometry model; The second data is obtained by acquiring the joint data of the maintenance worker during the current work through a motion sensor; the motion sensor is installed at the joint of the maintenance worker; The initial human body geometry model is adjusted according to the second data to obtain a target human body geometry model, and the target human body geometry model is mapped to the spatial distribution of the high-voltage line to obtain the spatial distribution of the maintenance worker's posture.

4. A combined gap verification method for live working in a high-voltage transmission channel according to claim 3, characterized in that: Capturing the joint information of the maintenance worker in real time, and updating the posture spatial distribution of the maintenance worker according to the joint information to obtain a three-dimensional geometric model includes: Acquire the joint information set of the maintenance worker in real time through the motion sensor, and generate a transformation matrix for each joint information to obtain a joint transformation matrix set; For each joint transformation matrix in the joint transformation matrix set, multiply the joint transformation matrix by the joint information of the joint point corresponding to the joint transformation matrix to obtain the target joint information of the joint point; The posture spatial distribution of the maintenance worker is updated according to the target joint information corresponding to all relevant nodes to obtain a three-dimensional geometric model.

5. The method for checking the combined gap during live working on a high-voltage transmission channel according to claim 1 is characterized in that: Performing electrostatic field domain solving on the three-dimensional geometric model and performing electrostatic field simulation calculation to obtain target electric field distribution includes: Taking the maintenance worker as the center and 6 times of the maintenance worker's arm length as the length, intercept the space region including the maintenance worker and the high-voltage line in the three-dimensional geometric model to obtain the electrostatic field solution space; For the electrostatic field solution space, the surface of the high-voltage line is recorded as the Dirichlet boundary of the known voltage, and the grounding point of the maintenance worker is recorded as the zero potential boundary; the known voltage is the voltage value of the transmission line; For the maintenance worker surface in the electrostatic field solution space, a finite element analysis is performed after floating potential processing to obtain a target electric field distribution.

6. A combined gap verification method for live working on a high-voltage transmission channel according to claim 1, characterized in that: Determining the minimum high voltage boundary gap and the minimum ground boundary gap according to the target electric field distribution includes: According to the target electric field distribution, the electric field strength and the voltage difference at the position where the maintenance worker's surface is closest to the high-voltage line are obtained to obtain a first target electric field strength and a first voltage difference, and a minimum high-voltage boundary gap is determined according to the first target electric field strength and the first voltage difference; The electric field strength and voltage difference between the maintenance worker surface and the ground are obtained to obtain a second target electric field strength and a second voltage difference, and a minimum ground boundary gap is determined according to the second target electric field strength and the second voltage difference.

7. The method for checking the combined gap during live working on a high-voltage transmission channel according to claim 1 is characterized in that: Determining the maintenance worker's work specification according to the high-voltage boundary gap, the ground boundary gap, the total gap, the minimum high-voltage boundary gap, the minimum ground boundary gap, and the preset minimum total gap includes: If the high-voltage boundary gap is less than or equal to the minimum high-voltage boundary gap, an alarm to stay away from the high-voltage line is issued; If the ground boundary gap is less than or equal to the minimum ground boundary gap, an alarm of being far away from the ground is issued; If the high-voltage boundary gap is greater than the minimum high-voltage boundary gap, the ground boundary gap is greater than the minimum ground boundary gap, but the total gap is less than the preset minimum total gap, a warning to stop operation is issued.

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