Grounding aid for electric power systems

Abstract

The application provides a grounding assisting device for a power system, comprising a moving platform, a support rod arranged on the moving platform, a control module and a driving member arranged in the support rod, support members arranged on both sides of the support rod, a clamping device arranged on the top of the support rod, the clamping device being adjustable to clamp the support rod, the top of the support member being connected with the support rod, and the bottom end of the support rod being rotatably connected with the moving platform; the support member is telescopic to fix the support rod; the control module drives the driving member and the clamping device according to a control instruction to fix the support rod and the support member. The application provides a safe, efficient and convenient tool for installing and removing a grounding wire, and can be widely applied to power transmission and power transformation professional work sites in the power system to eliminate safety hazards and improve work efficiency.

Description

Technical Field

[0001] This invention relates to the field of power technology, and in particular to a grounding assist device for power systems. Background Technology

[0002] Installing grounding wires is a primary technical means in power systems to protect workers from the risk of electric shock. Currently, the installation and removal of grounding wires pose safety hazards, threatening the personal safety of operators. In the past two years, China Southern Power Grid Company has issued 32 accident reports, of which 10 (31%) involved injuries or fatalities related to grounding wire operations.

[0003] During the installation and removal of grounding wires, improper force or poor positioning often leads to the grounding wire clamp detaching from the grounding rod. This is extremely dangerous, as the clamp on the grounding wire clamp is merely hooked onto the conductor end of the equipment and not tightened securely. Given its weight, a fall could easily cause personal injury and equipment damage, posing a significant risk to personal injury and threatening equipment safety. To complete the operation, the clamp on the grounding rod and grounding wire must be reconnected. However, because the diameter of the grounding rod (1.6cm–2.6cm) matches well with the outer diameter of the grounding wire clamp (1.5cm–2.4cm), and the protruding part of the clamp is only 0.5cm in diameter, it is difficult to distinguish when hooked on a conductor more than 6m above the ground. Reconnecting the grounding rod and grounding wire requires extreme care and patience, and the risk of knocking the clamp off the conductor end cannot be avoided.

[0004] Furthermore, instances of loosely installed grounding wires occasionally occur, potentially leading to poor equipment grounding and posing significant safety hazards. Grounding wires are often installed in inaccessible locations, making it difficult to directly assess their stability. There may be instances where the wire appears securely installed but cannot be tightened further using a grounding rod, yet the connection to the conductor is not secure, creating a safety hazard for on-site personnel.

[0005] Installing or removing grounding wires on 220kV and 500kV equipment at heights (6m-12m) is not only time-consuming but also requires considerable physical strength. Even with protective gear such as insulated gloves and masks, the operation is extremely inconvenient. This is primarily because the grounding wires themselves are long and have large cross-sectional areas (50mm² for 220kV and 70mm² for 500kV) due to current conductivity and safety distance requirements. They are also made of high-density copper, making them heavy. The grounding rods themselves are also long and heavy due to insulation distance requirements. Furthermore, the surfaces of the insulated gloves and grounding rods are relatively smooth with a low coefficient of friction, thus requiring significant physical strength. Because of the high installation location, the grounding rod length is often insufficient, necessitating the use of ladders and other auxiliary tools, further complicating the installation and removal of grounding wires. In practice, the installation of 500kV grounding wires usually requires assistance from the construction unit.

[0006] For the installation of grounding wires at voltage levels of 500kV and above, the power system currently widely adopts the method of manually grounding by transporting personnel to the grounding point using aerial work platforms. This method of raising personnel to a certain height carries a certain risk of falls from height and requires operators to have qualifications for working at heights. On the other hand, aerial work platforms require a high degree of accessibility to the on-site road environment, and their applicability is limited to indoor grounding locations and other similar scenarios. Summary of the Invention

[0007] The purpose of this invention is to propose a grounding assistance device for power systems, which solves the technical problems of how to eliminate safety hazards, shorten operation time, improve work efficiency, and ensure the safe and compliant installation and removal of grounding wires.

[0008] On the one hand, a grounding assist device for a power system is provided, comprising:

[0009] The mobile platform has support rods mounted on it, and the control module and drive components are housed inside.

[0010] Support members are provided on both sides of the support rod, and a clamping device is provided on the top of the support rod. The clamping device can adjust and clamp the support rod. The top of the support member is connected to the support rod, and the bottom of the support rod is rotatably connected to the moving platform. The support member can extend and retract to fix the support rod.

[0011] The control module drives the drive component and the clamping device according to control commands to fix the support rod and the support component.

[0012] Preferably, the mobile platform includes:

[0013] A support platform, which houses the interconnected drive unit, power supply module and control module, and has multiple rollers underneath it;

[0014] The driving component is located at the center of the support platform. The roller is used to move the support platform. A connecting component is provided on the driving component, which is connected to the bottom end of the support rod. The driving component is controlled by the control module and is used to drive the support rod to rotate in the horizontal direction.

[0015] Preferably, the support rod is vertically mounted on the support platform, a fixed platform is mounted on the upper part of the support rod and passes through the middle of the fixed platform, and the clamping device is mounted on the upper part of the fixed platform.

[0016] The fixed platform is connected to the support members on both sides for fixing the support rod.

[0017] Preferably, the clamping device includes at least two adjacent vertical drive motors and clamping components.

[0018] The vertical drive motors are connected to the power supply module and the control module respectively. The vertical drive motors are controlled by the control module to drive the clamping component. The two vertical drive motors rotate in opposite directions. The clamping component is used to clamp the support rod and assist in realizing the vertical upward and downward displacement of the support rod.

[0019] Preferably, the support includes at least two telescopic support components, the upper end of which is connected to the fixed platform, and the lower end of which is inclined and supported on the ground.

[0020] The telescopic support component extends and retracts through multiple connecting rods installed within it, and the multiple connecting rods are detachably fixed to each other.

[0021] Preferably, the support rod is made of insulating material.

[0022] Preferably, the clamping component is a rubber block.

[0023] In summary, implementing the embodiments of the present invention has the following beneficial effects:

[0024] The grounding assistance device for power systems provided by this invention uses an electric device to lift, attach, and remove grounding wires, replacing traditional manual labor. It is applicable to various scenarios requiring the installation of grounding wires at 220kV and above, significantly reducing safety hazards and improving work efficiency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of the present invention.

[0026] Figure 1 This is a schematic diagram of a grounding assist device for a power system according to an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the driving component in an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the clamping device in an embodiment of the present invention.

[0029] Figure 4 This is the control circuit for the driving component and clamping device in the embodiments of the present invention. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] like Figure 1 The diagram shown is a schematic representation of an embodiment of a grounding assist device for a power system provided by the present invention. In this embodiment, the device includes:

[0032] A mobile platform is provided with a support rod, and a control module and a drive component are installed inside the support rod. Support components are provided on both sides of the support rod, and a clamping device is provided on the top of the support rod. The clamping device can adjust to clamp the support rod. The top of the support component is connected to the support rod, and the bottom end of the support rod is rotatably connected to the mobile platform. The support component can extend and retract to fix the support rod.

[0033] The control module drives the drive component and the clamping device according to control commands to fix the support rod and the support component. That is, the mobile platform serves as both a load-bearing and storage component. A battery (power supply module), a motor (drive component), and its control module are fixedly installed at its bottom. The drive component, installed at the center of the platform, rotates horizontally, enabling the tightening or loosening of the grounding wire to the conductor end requiring grounding by rotating the insulating rod (existing grounding wire conductor end connectors are screw-type structures, where rotating the screw tightens or loosens the conductor).

[0034] The telescopic support primarily provides strong support for the insulating rod, ensuring it won't tip over during operation. For ease of storage and operation, the support is designed as a multi-section telescopic structure; its length can be adjusted according to the specific location where the grounding wire needs to be installed.

[0035] In a specific embodiment, the mobile platform includes: a support platform, in which the driving component, power supply module and control module are interconnected, and multiple rollers are arranged below it; the driving component is located at the center of the support platform, and the rollers are used to move the support platform.

[0036] like Figure 2 As shown, the driving component is provided with a connecting part, which is connected to the bottom end of the support rod. The driving component is controlled by the control module and is used to drive the support rod to rotate in the horizontal direction.

[0037] In other words, the support platform and support rod are connected and secured using specialized connecting components. The control module controls the forward and reverse rotation of the motor and provides a mutual interlocking function to prevent short circuits between the positive and negative terminals of the power supply. Before field use, the telescopic support components and the clamping components for the other two motors are stored inside the platform. The platform also provides space for mounting the insulating rod and grounding wire. For ease of movement and transportation, wheels are installed at the bottom of the platform, and handles are installed on the sides. To ensure stability during operation, the wheels are equipped with locking devices, allowing them to be locked after moving to a suitable location.

[0038] In this embodiment, the support rod is vertically mounted on the support platform. A fixed platform is mounted on the upper part of the support rod and passes through the middle of the fixed platform. A clamping device is mounted on the upper part of the fixed platform. Support members are connected to both sides of the fixed platform for fixing the support rod. The support rod is made of insulating material. It should be noted that, for better performance, the support rod must use insulating material and meet the insulation requirements of the corresponding voltage level. The specific voltage level can be determined according to the actual working conditions, and the support rod can be replaced with one that meets the required insulation voltage level as needed.

[0039] like Figure 3As shown, the clamping device includes at least two adjacent vertical drive motors and clamping components. The vertical drive motors are connected to the power supply module and the control module, respectively. The vertical drive motors are controlled by the control module to drive the clamping components. The two vertical drive motors rotate in opposite directions. The clamping components are used to clamp the support rod and assist in achieving the vertical upward and downward displacement of the support rod. The clamping components are rubber blocks. That is, two vertically rotating motors (vertical drive motors) and clamping components are installed on the top of the telescopic support. During operation, the top of the insulating rod is raised to the height for installing the grounding conductor to complete the installation or removal operation; after the operation is completed, the insulating rod is lowered for other operations and to prevent personnel from bumping or knocking it down, causing personal safety hazards. The clamping components are made of rubber to provide sufficient friction. The power supply for the vertical drive motors comes from a battery installed on the mobile platform and the control module, connected by wires. The control module's control circuit for the vertical drive motors and drive components is as follows: Figure 4 As shown, the wires are wound around the coil of the moving platform.

[0040] In this embodiment, the support includes at least two telescopic support components. The upper end of each telescopic support component is connected to the fixed platform, and the lower end of each telescopic support component is inclined and supported on the ground. The telescopic support component extends and retracts through multiple connecting rods installed within it, and these connecting rods are detachably fixed to each other. In other words, the telescopic support mainly provides strong support for the insulating rod, ensuring that the insulating rod will not tip over during operation. Furthermore, for ease of storage and operation, the support is designed as a multi-section telescopic structure, and its length can be adjusted according to the specific location where the grounding wire needs to be installed.

[0041] In this embodiment, the process of installing the grounding wire is as follows:

[0042] Step 1: According to relevant regulations and procedures, select appropriate grounding wires and support rods, and transport them to the site where grounding wires need to be installed using a mobile platform;

[0043] Step 2: After adjusting the mobile platform to a suitable position, lock the wheels of the mobile platform with the locking device to fix the position of the mobile platform, and ensure that the grounding terminal of the grounding wire is properly grounded;

[0044] Step 3: Remove the telescopic support, clamping device and clamping components from the mobile platform, and connect the input end of the clamping device to the battery and control module in the mobile platform using the wires in the cable reel;

[0045] Step 4: Place the telescopic support in the appropriate position and extend it to the appropriate height;

[0046] Step 5: After assembling the appropriate number of insulating rod sections, install the grounding wire conductor end connector on the top of the insulating rod, and install the insulating rod in the middle of the clamping component;

[0047] Step 6: Start the clamping device to rotate forward and lift the insulating rod upward;

[0048] Step 7: When the top of the support rod reaches the conductor where the grounding wire needs to be installed, stop the clamping device and jump to step 8; if the top of the support rod does not reach the conductor where the grounding wire needs to be installed, but the bottom has exceeded the range of the moving platform, stop the clamping device, install another support rod at the bottom of the insulating rod, and jump to step 6.

[0049] Step 8: Connect the bottom of the support rod to the drive shaft, start the drive to rotate forward, and connect and tighten the grounding wire conductor end connector to the conductor end;

[0050] Step 9: Separate the top of the support rod from the grounding conductor end connector, separate the bottom of the insulating rod from the drive component, and remove the bottom section of the support rod;

[0051] Step 10: Activate the clamping device to reverse and lower the support rod. During the descent, stop the clamping device at an appropriate time, remove the bottom of the support rod, and then activate the clamping device to reverse and lower the support rod until the top of the support rod reaches the clamping component;

[0052] Step 11: Remove the support rod from the clamping components and disassemble the support rod into smaller sections, storing them in the mobile platform;

[0053] Step 12: Retract the telescopic support, disconnect the power input wire of the clamping device, and store the wire in the wire reel. Store the retractable support, clamping device, and clamping components in the mobile platform.

[0054] Step 13: Open the locking device of the wheels, retract the mobile platform and arrange it neatly.

[0055] The procedure for removing the grounding wire is as follows:

[0056] Step 1: According to relevant regulations and procedures, select a suitable support rod and use a mobile platform to transport it to the site where the grounding wire needs to be removed;

[0057] Step 2: After adjusting the mobile platform to a suitable position, lock the wheels of the mobile platform with the locking device to fix the position of the mobile platform;

[0058] Step 3: Remove the telescopic support, clamping device and clamping components from the mobile platform, and connect the power input terminal of the clamping device to the battery and control module in the mobile platform using the wires in the cable reel;

[0059] Step 4: Place the telescopic support in the appropriate position and extend it to the appropriate height;

[0060] Step 5: After assembling the appropriate number of support rod sections, install the support rods in the middle of the clamping components;

[0061] Step 6: Start the clamping device to rotate forward and lift the support rod upward;

[0062] Step 7: When the top of the support rod reaches the grounding conductor end connector that needs to be removed, stop the clamping device, connect the top of the support rod to the grounding conductor end connector that needs to be removed, and jump to step 8; if the top of the support rod does not reach the grounding conductor end connector that needs to be removed, but the bottom has exceeded the range of the moving platform, stop the clamping device, install another support rod at the bottom of the support rod, and jump to step 6;

[0063] Step 8: Connect the bottom of the support rod to the drive shaft, and start the drive to reverse, separating the grounding wire conductor end connector from the conductor end;

[0064] Step 9: Separate the bottom of the support rod from the drive component and remove the bottom section of the support rod;

[0065] Step 10: Activate the clamping device to reverse and lower the support rod and grounding wire. During the descent, stop the clamping device at an appropriate time, remove the bottom of the support rod, and then activate the clamping device to reverse and lower the support rod and grounding wire until the top of the support rod reaches the clamping component.

[0066] Step 11: Remove the support rod and grounding wire from the clamping components, remove the conductor end connector of the grounding wire from the top of the support rod, disassemble the support rod into sections, remove the grounding end of the grounding wire, and store the support rod and grounding wire in the mobile platform;

[0067] Step 12: Retract the telescopic support component, disconnect the power input wire of the clamping device, and store the wire in the wire reel. Store the retractable support component, clamping device, and clamping component in the mobile platform.

[0068] Step 13: Open the locking device of the wheels, retract the mobile platform and arrange it neatly.

[0069] In summary, implementing the embodiments of the present invention has the following beneficial effects:

[0070] The grounding assistance device for power systems provided by this invention uses an electric device to lift, attach, and remove grounding wires, replacing traditional manual labor. It is applicable to various scenarios requiring the installation of grounding wires at 220kV and above, significantly reducing safety hazards and improving work efficiency.

[0071] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A grounding assist device for a power system, characterized in that, include: A mobile platform with a support rod on it, and a control module and a drive unit inside it. The mobile platform includes a support platform, and the drive unit, power supply module and control module are interconnected inside the support platform. Multiple rollers are arranged below it. Support members are provided on both sides of the support rod, and a clamping device is provided on the top of the support rod. The clamping device can adjust and clamp the support rod. The top of the support member is connected to the support rod, and the bottom of the support rod is rotatably connected to the moving platform. The support member can extend and retract to fix the support rod. The driving component is located at the center of the support platform, and the roller is used to move the support platform. The driving component is provided with a connecting component, which is connected to the bottom end of the support rod. The driving component is controlled by the control module and is used to drive the support rod to rotate in the horizontal direction. The control module drives the drive component and the clamping device according to the control command to fix the support rod and the support component; the support rod is vertically set on the support platform, a fixed platform is set on the upper part of the support rod and passes through the middle of the fixed platform, the clamping device is set on the upper part of the fixed platform, and the support component is connected to both sides of the fixed platform to fix the support rod. The clamping device includes at least two adjacent vertical drive motors and clamping components. The vertical drive motors are respectively connected to the power supply module and the control module. The vertical drive motors are controlled by the control module to drive the clamping components. The two vertical drive motors rotate in opposite directions. The clamping components are used to clamp the support rod and assist in realizing the vertical upward and downward displacement of the support rod.

2. The apparatus as claimed in claim 1, characterized in that, The support includes at least two telescopic support components, the upper end of which is connected to the fixed platform, and the lower end of which is inclined and supported on the ground. The telescopic support component extends and retracts through multiple connecting rods installed within it, and the multiple connecting rods are detachably fixed to each other.

3. The apparatus as described in claim 1 or 2, characterized in that, The support rod is made of insulating material.

4. The apparatus as described in claim 3, characterized in that, The clamping component is a rubber block.

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