Compact flexible graphene module and vertical grounding integrated device

Abstract

The invention provides a compact flexible graphene module and vertical grounding integrated device, and relates to the technical field of grounding devices, the compact flexible graphene module and vertical grounding integrated device comprises two groups of graphene flexible grounding modules and a graphene composite vertical grounding electrode, a first lead is connected between the two groups of graphene flexible grounding modules, and a second lead is connected between the two groups of graphene flexible grounding modules. The graphene composite vertical grounding electrode is vertically connected with the first lead; the graphene flexible grounding device is composed of a down lead, two graphene flexible grounding modules and a graphene composite vertical grounding electrode, and the core of the graphene flexible grounding device is that intrinsic advantages of ultrahigh electric conductivity, ultrahigh heat conductivity, mechanical flexibility, environmental tolerance and the like of graphene on an atomic level are improved through a modular, flexible and integrated three-level progressive thought; the system is migrated to a complex scene which is difficult to adapt to a traditional grounding system, and can achieve the operation targets of zero failure, zero maintenance and zero land occupation under the extreme working conditions of limited space, topographic relief, violent disturbance of an electromagnetic environment, high salt mist, high humidity and heat, high altitude and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grounding devices, in particular to a compact flexible graphene module and a vertical grounding integrated device. BACKGROUND

[0002] In the field of power distribution network grounding, traditional grounding materials (such as copper bars and galvanized steel) are prone to electrochemical corrosion in harsh environments such as acid and alkali corrosion, high salt fog, freeze-thaw cycle, etc., resulting in increased grounding resistance and lightning protection failure. At the same time, traditional grounding systems have technical defects such as large construction land occupation, short maintenance cycle, high difficulty in deep drilling, poor soil adaptability, etc., and are difficult to meet the long-term stable grounding needs in high corrosion and high resistivity geological environments. The existing graphite-based grounding module generally has the following defects: high brittleness, easy to break during transportation, and significant humidity fluctuation in soil contact resistance; the graphene composite grounding body faces technical bottlenecks such as uneven dispersion of graphene, low interfacial bonding strength, and low yield in large-scale production; although conductive concrete grounding materials can partially improve conductivity, they have defects such as uneven distribution of conductive phase, poor long-term stability, and weak freeze-thaw resistance, and cannot achieve sustained stability of low resistance channels. Therefore, the present application proposes a compact flexible graphene module and a vertical grounding integrated device to solve the problems existing in the prior art. SUMMARY

[0003] To solve the above problems, the present application proposes a compact flexible graphene module and a vertical grounding integrated device. The compact flexible graphene module and the vertical grounding integrated device are composed of a downlead, two graphene flexible grounding modules and a graphene composite vertical grounding electrode. The core is to transfer the intrinsic advantages of graphene at the atomic level, such as ultra-high conductivity, ultra-high thermal conductivity, mechanical flexibility and environmental resistance, to complex scenarios that traditional grounding systems cannot adapt to through modularization, flexibility and integration of three-level progressive ideas. It can achieve zero failure, zero maintenance and zero land occupation in space-limited, terrain undulating, electromagnetic environment disturbance and extreme working conditions such as high salt fog, high humidity, high altitude, etc.

[0004] To achieve the purpose of the present application, the following technical scheme is adopted: a compact flexible graphene module and a vertical grounding integrated device, comprising a graphene flexible grounding module and a graphene composite vertical grounding electrode, the graphene flexible grounding module is provided with two groups, and the two groups of graphene flexible grounding modules are connected by a first lead, and the graphene composite vertical grounding electrode is connected with the first lead vertically; One end of one group of graphene flexible grounding modules is connected with a second lead, and the second lead is used to connect the downlead.

[0005] Further improvement lies in that the graphene composite vertical grounding electrode comprises a graphene woven layer, a stainless steel pipe arranged at the inner side of the graphene woven layer and an ion slow-release agent filled in the inner side of the stainless steel pipe, and ion slow-release agent release holes are arranged below the outer side of the stainless steel pipe.

[0006] Further improvement lies in that the graphene woven layer is connected with a graphene leading-out electrode above one side, and the graphene leading-out electrode is connected with the first leading wire through a first connecting piece.

[0007] Further improvement lies in that the second leading wire is connected with the down lead through a second connecting piece.

[0008] Further improvement lies in that the first connecting piece and the second connecting piece are both stainless steel adapters.

[0009] Further improvement lies in that the down lead is a high-strength graphene down lead, and one end of the high-strength graphene down lead is connected with a first connecting head.

[0010] Further improvement lies in that the down lead is a round steel high polymer film-coated down lead, and one end of the round steel high polymer film-coated down lead is connected with a second connecting head.

[0011] Further improvement lies in that the graphene flexible grounding module adopts a multi-layer gradient impedance design, the topmost layer is a laser-induced graphene high-resistance layer engraved with a micro-crack network, which is used to rapidly form a uniform surface discharge channel under a nanosecond-level lightning impact and suppress local arc; the middle layer is a continuous graphene film with extremely high in-plane electrical conductivity, which bears the main discharge of power frequency short-circuit current and lightning current; the bottom layer is a nano forest constructed by vertical graphene arrays, the local field enhancement effect of the tips of the nano forest is used to reduce the contact resistance between the graphene composite vertical grounding electrode and the soil to one tenth of that of traditional galvanized steel, the three layers are bridged by rivet-type silver nanowires, and each layer reversibly slips when deformed.

[0012] Further improvement lies in that fluorinated graphene nanosheets are introduced as a reversible sacrificial layer on the surface of the graphene flexible grounding module, when micro-cracks appear in the repeated bending process, the C-F bonds in the fluorinated graphene nanosheets preferentially break and release fluorine ions, and the C-F bonds recombine with the dangling bonds of graphene at the crack tip, forming a local sp3 hybrid rivet, which reduces the crack propagation rate.

[0013] Further improvement lies in that the first leading wire and the second leading wire are both formed by graphene wire, and the intermediate filler is high-purity flake graphite as a conductive material.

[0014] The beneficial effects of the present application are: 1、The application is composed of down lead, two graphene flexible grounding modules and graphene composite vertical grounding electrode, the core is that the intrinsic advantages of graphene at atomic level, such as super-high conductivity, super-high thermal conductivity, mechanical flexibility and environmental resistance, are transferred to the complex scene that the traditional grounding system cannot adapt to through the three-level progressive ideas of modularization, flexibility and integration, the operation target of zero failure, zero maintenance and zero occupation can be realized under the extreme working conditions of space limitation, terrain undulation, severe electromagnetic environment disturbance, high salt fog, high humidity and high altitude, the three-dimensional reconstruction of the grounding network originally constructed by copper belts of several meters or even tens of meters in centimeter thickness is completed relying on the three-dimensional foldable and curling characteristics of the graphene two-dimensional honeycomb lattice, the continuous adjustable flexible structure based on the graphene film composite substrate enables the grounding body to deform synchronously with the carrier such as building and tunnel, the vertical grounding integration breaks through the split design mode of the traditional horizontal grounding net + vertical grounding electrode, the horizontal current dispersion and vertical current discharge are integrated into a three-dimensional channel with almost zero resistivity by means of the vertical tunneling effect of the interlayer pi electron cloud of graphene, and one-point grounding and global equipotential are truly realized.

[0015] 2、The application constructs a three-dimensional continuous conductive network, forms a three-dimensional integrated low-resistance channel of down lead, double flexible modules and vertical grounding body, realizes the three-dimensional synergistic effect of high conductivity, high corrosion resistance and high strength, breaks through the performance bottleneck of traditional grounding materials in harsh environments, and the modular design supports the equipotential connection of multiple modules and adapts to any voltage grade tower grounding net, especially for special scenes such as high acid and alkali strong corrosion, high soil resistivity and excavation limited distribution transformer area, and significantly reduces the construction difficulty and comprehensive cost.

[0016] 3、The graphene gives the grounding module a self-healing function, can monitor the impedance in real time and trigger a self-healing pulse, realizes zero failure and zero maintenance, is suitable for a wide temperature range of-40 DEG C to 80 DEG C, any pH value soil, no corrosion and no pollution, provides an efficient, low-cost and long-life grounding solution for the power, rail transit, communication and other industries, and has significant economic and social benefits. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an embodiment one schematic view of the application; Figure 2 It is an embodiment two schematic view of the application; Figure 3 It is a graphene composite vertical grounding electrode structure schematic view of the application; Figure 4 It is a graphene composite vertical grounding electrode top view schematic view of the application; Figure 5 It is a product technical parameter schematic view of the application; Figure 6 It is a grounding model schematic view of the application; Figure 7Resistance reduction efficiency diagram of different arrangement modes of the block ray type grounding grid of the application; Figure 8 Resistance reduction efficiency diagram of different arrangement distances of the application; Figure 9 Typical grounding grid of the application

[0018] 1, graphene flexible grounding module; 2, graphene composite vertical grounding electrode; 3, first lead; 4, second lead; 5, graphene woven layer; 6, stainless steel pipe; 7, ion release agent; 8, ion release agent precipitation hole; 9, graphene lead-out electrode; 10, first connecting piece; 11, second connecting piece; 12, high-strength graphene downlead; 13, first connecting head; 14, round steel polymer film downlead; 15, second connecting head. DETAILED DESCRIPTION

[0019] In order to deepen the understanding of the application, the application will be further described below in conjunction with the embodiments, which are only used to explain the application and do not constitute a limitation on the protection scope of the application.

[0020] Example 1 According to Figure 1 , 2 , 3, 4, 5, the present embodiment proposes a compact flexible graphene module and a vertical grounding integrated device, which comprises two groups of graphene flexible grounding modules 1 and graphene composite vertical grounding electrodes 2, the two groups of graphene flexible grounding modules 1 are connected by first leads 3, and the graphene composite vertical grounding electrodes 2 are connected vertically with the first leads 3. One end of one group of graphene flexible grounding modules 1 is connected with a second lead 4, and the second lead 4 is used to connect the downlead. A three-dimensional continuous conductive network is constructed to form a three-dimensional integrated low-resistance channel of downlead, double flexible module and vertical grounding body, realize the three-dimensional synergistic effect of high conductivity, high corrosion resistance and high strength, break through the performance bottleneck of traditional grounding materials in harsh environment, and support multi-module equipotential connection by modular design, adapt to any voltage grade tower grounding grid, especially suitable for special scenes such as high acid and alkali strong corrosion, high soil resistivity and limited excavation of distribution transformer area, and significantly reduce the construction difficulty and comprehensive cost.

[0021] The graphene composite vertical grounding electrode 2 comprises a graphene woven layer 5, a stainless steel pipe 6 and an ion release agent 7, the stainless steel pipe 6 is arranged on the inner side of the graphene woven layer 5, the ion release agent 7 is filled in the inner side of the stainless steel pipe 6, and the ion release agent precipitation hole 8 is arranged below the outer side of the stainless steel pipe 6. The ion release agent is continuously released to maintain long-term low resistance; the stainless steel pipe enhances the rigidity and resists external damage.

[0022] The graphene braided layer 5 is connected with a graphene lead-out pole 9 on one side, and the graphene lead-out pole 9 is connected with the first lead wire 3 through a first connecting piece 10. The second lead wire 4 is connected with the down lead through a second connecting piece 11. The first connecting piece 10 and the second connecting piece 11 are stainless steel adapters. The stainless steel adapters are corrosion-resistant and ensure reliable connection; the lead-out pole is adapted to the lead wire, reducing the contact resistance.

[0023] The down lead is a high-strength graphene down lead 12, and one end of the high-strength graphene down lead 12 is connected with a first connecting head 13. The high-strength material is wear-resistant, prolonging the service life of the down lead; and the connecting head has strong adaptability, facilitating the docking device.

[0024] The graphene flexible grounding module 1 adopts a multi-layer gradient impedance design. The top layer is a laser-induced graphene high-resistance layer with a micro-crack network, which is used to quickly form a uniform surface discharge channel under nanosecond lightning impact and suppress local arcs. The middle layer is a continuous graphene film with extremely high in-plane electrical conductivity, which bears the main discharge of power frequency short-circuit current and lightning current. The bottom layer is a nanowood constructed by vertical graphene arrays, and the local field enhancement effect of the tips is used to reduce the contact resistance between the graphene composite vertical grounding pole 2 and the soil to one-tenth of that of traditional galvanized steel. The three layers are bridged by rivet-type silver nanowire, and each layer reversibly slips when deformed. Fluorinated graphene nanosheets are introduced on the surface of the graphene flexible grounding module 1 as a reversible sacrificial layer. When micro-cracks appear during repeated bending, the C-F bonds in the fluorinated graphene nanosheets preferentially break and release fluorine ions, which recombine with the graphene dangling bonds at the crack tip, forming a local sp3 hybrid rivet, reducing the crack propagation rate. The first lead wire 3 and the second lead wire 4 are both formed by graphite wire, and the intermediate filler is high-purity flake graphite as a conductive material. The multi-layer design resists arcs, improving lightning protection capability; the silver nanowire bridge is flexible and avoids breaking, the sacrificial layer repairs cracks, prolonging the module's life; the crack propagation is inhibited, ensuring stable conductivity, the graphite wire is easy to bend, facilitating construction and layout; the high-purity graphite conducts electricity well, reducing the lead resistance. The graphene gives the grounding module self-healing function, which can monitor the impedance in real time and trigger a self-healing pulse, achieving zero failure and zero maintenance, and is suitable for a wide temperature range of -40℃ to 80℃, any pH value of soil, no corrosion and no pollution, providing efficient, low-cost, long-life grounding solutions for the power, rail transportation, communication and other industries, with significant economic and social benefits.

[0025] Embodiment two According to Figure 1 , 2, 3, 4, 5, the embodiment proposes a compact flexible graphene module and vertical ground integrated device, including graphene flexible grounding module 1 and graphene composite vertical grounding electrode 2, the graphene flexible grounding module 1 is equipped with two groups, and the first lead 3 is connected between the two groups of graphene flexible grounding module 1, the graphene composite vertical grounding electrode 2 is vertically connected with the first lead 3; One end of a group of graphene flexible grounding module 1 is connected with the second lead 4, and the second lead 4 is used for connecting the down lead. A three-dimensional continuous conductive network is constructed, a down lead, a double flexible module and a vertical grounding body are formed into a three-dimensional integrated low resistance channel, a three-dimensional synergistic effect of high conductivity, high corrosion resistance and high strength is realized, the performance bottleneck of traditional grounding material in harsh environment is broken through, and modular design supports multi-module equipotential connection, adapts to any voltage grade tower grounding net, especially suitable for special scenes such as high acid and alkali strong corrosion, high soil resistivity, limited excavation and distribution transformer area, and significantly reduces construction difficulty and comprehensive cost.

[0026] The graphene composite vertical grounding electrode 2 includes a graphene woven layer 5, a stainless steel pipe 6 and an ion release agent 7, the stainless steel pipe 6 is arranged on the inner side of the graphene woven layer 5, the ion release agent 7 is filled in the inner side of the stainless steel pipe 6, and the ion release agent release hole 8 is arranged below the outer side of the stainless steel pipe 6. The ion release agent is continuously released to maintain long-term low resistance; the stainless steel pipe enhances the rigidity and resists external force damage.

[0027] The graphene lead-out electrode 9 is connected above one side of the graphene woven layer 5, and the graphene lead-out electrode 9 is connected with the first lead 3 through the first connecting piece 10. The second lead 4 is connected with the down lead through the second connecting piece 11. The first connecting piece 10 and the second connecting piece 11 are both stainless steel adapters. The stainless steel adapter is corrosion resistant and ensures reliable connection; the lead-out electrode is suitable for lead and reduces contact resistance.

[0028] The down lead is a round steel high polymer film down lead 14, and one end of the round steel high polymer film down lead 14 is connected with a second connecting head 15. The film is corrosion resistant and suitable for harsh environment; the connecting head has strong adaptability and simplifies assembly.

[0029] The graphene flexible grounding module 1 employs a multi-layer gradient impedance design. The top layer is a laser-induced graphene high-resistivity layer etched with a microcrack network, used to rapidly form a uniform surface discharge channel under nanosecond-level lightning impacts and suppress local arcing. The middle layer is a continuous graphene film with extremely high in-plane conductivity, bearing the main discharge of power frequency short-circuit current and lightning current. The bottom layer is a nanoforest constructed through a vertical graphene array, whose tip-level local field enhancement effect reduces the contact resistance between the graphene composite vertical grounding electrode 2 and the soil to one-tenth that of traditional galvanized steel. The three layers are bridged by rivet-type silver nanowires, and each layer undergoes reversible slippage during flexible deformation. Fluorinated graphene nanosheets are introduced on the surface of the graphene flexible grounding module 1 as a reversible sacrificial layer. When microcracks appear during repeated bending, the C–F bonds in the fluorinated graphene nanosheets preferentially break and release fluoride ions, which re-bond with graphene dangling bonds at the crack tip, forming local sp3 hybrid rivets, thereby reducing the crack propagation rate. Both the first lead 3 and the second lead 4 are made of graphite wire, with high-purity flake graphite as the conductive material as the interlayer filler. The multi-layer design resists electric arcs and enhances lightning protection; ② Silver nanowire bridging ensures flexibility and prevents breakage, while the sacrificial layer repairs cracks and extends module lifespan; it inhibits crack propagation, ensures stable conductivity, and the graphite wire is easily bent, facilitating construction and installation; high-purity graphite provides excellent conductivity, reducing lead resistance. Graphene endows the grounding module with self-healing capabilities, enabling real-time impedance monitoring and triggering of self-healing pulses, achieving zero failure and zero maintenance. It is suitable for a wide temperature range of -40℃ to 80℃ and soils of any acidity or alkalinity, without corrosion or pollution, providing efficient, low-cost, and long-life grounding solutions for industries such as power, rail transportation, and communications, with significant economic and social benefits.

[0030] Verification example: According to Figure 6 , 7 As shown in 8 and 9: The rectangular radial grounding grid is the most common type of grounding grid in typical designs for power line towers. During construction, four grounding rays radiate from the four corners of the U-shaped grounding grid outside the tower base, forming an angle of 135° with each side. To analyze the regularity of the changing trends, the simulation uses a single grounding module for both the grounding grid frame and the rays. The grounding models are as follows: Figure 6 As shown.

[0031] Simulation calculations were performed on the resistance reduction efficiency of this device for a typical grounding grid. The grounding grid model had a frame length of 12m, a ray length of 15m, a soil resistivity of 1000Ω·m under high soil resistivity conditions, a grounding grid burial depth of 0.8m, and four down conductors as injection points. Simulation results for each model were presented. Figure 7 As shown, by Figure 7The calculation results show that when the frame ray type grounding adopts the grounding module resistance reduction, connecting the device on the ray can improve the material utilization and improve the resistance reduction efficiency of the grounding module. Further, when the number of grounding modules is increased, the calculation results of different grounding arrangements are shown in Figure 8 、 9 .

[0032] From the Figure 8 、 9 calculation data, when the same number and same interval of the device are used for resistance reduction of the tower grounding net of different voltage levels, the resistance reduction efficiency of the 110kV tower grounding net is the highest, and the resistance reduction efficiency of the 500kV tower grounding net with the largest grounding area is relatively the lowest. On the one hand, the larger the area of the tower grounding net, the stronger the shielding between the grounding conductors under the same interval, and the smaller the shunt effect of the grounding module. On the other hand, the larger the area of the grounding net, the smaller the proportion of the grounding module in the effective scattering area of the entire grounding net, so that the resistance reduction efficiency of the grounding net is low. In addition, it is found through comparison that the resistance reduction efficiency of the tower grounding net of different voltage levels of the transmission line exists a saturation "threshold value", which prompts that attention should be paid to the shielding effect between the grounding conductors during the actual construction of the tower grounding net of the transmission line, and the technical and economic efficiency of the grounding module should be improved. It should be noted that the resistance reduction efficiency calculation results obtained by simulation calculation only consider the scattering effect of the grounding module conductor itself, and do not consider the improvement effect of the new generation of compact flexible graphene module and the vertical grounding integrated device on the conductivity of the surrounding soil medium. When the module fills the conductive particles and diffuses into the soil, due to the "bridging" effect between the particles, a conductive path is formed in the soil, so that the equivalent resistivity of the soil medium is reduced, and the resistance reduction efficiency is much higher than the theoretical calculation value in this paper. This is beneficial to the resistance reduction construction of the actual line tower grounding net. In addition, the widely used non-metal flexible graphite composite grounding body in recent years replaces the original galvanized steel grounding body, effectively avoiding the problem of electrochemical corrosion of the metal grounding body. Under this premise, high-purity flake graphite and conductive ions can be filled in the device to further improve the conductivity of the surrounding soil and achieve the purpose of reducing the tower grounding resistance The compact flexible graphene module and vertical ground integrated device is composed of a down conductor, two graphene flexible grounding modules 1 and a graphene composite vertical grounding electrode 2, and the core is that the intrinsic advantages of graphene at the atomic level, such as super-high conductivity, super-high thermal conductivity, mechanical flexibility and environmental resistance, are transferred to the complex scene that the traditional grounding system cannot adapt through the three-level progressive ideas of modularization, flexibility and integration. In the extreme working conditions such as space limitation, terrain fluctuation, severe electromagnetic environment disturbance, high salt fog, high humidity, high altitude and the like, the operation target of zero failure, zero maintenance and zero occupation can be realized, and the three-dimensional reconstruction of the grounding network originally constructed by copper belts of several meters or even tens of meters can be completed within centimeter-level thickness relying on the three-dimensional foldable and curling characteristics of the graphene two-dimensional honeycomb lattice; based on the continuous adjustable flexible structure of the graphene film composite substrate, the grounding body can be deformed synchronously with the carrier such as building and tunnel, and the vertical grounding integration breaks through the split design mode of the traditional horizontal grounding net + vertical grounding electrode, integrates the horizontal current dispersion and the vertical current discharge into a three-dimensional channel with a resistivity of nearly zero by means of the vertical tunneling effect of the interlayer pi electron cloud of graphene, and truly realizes one-point grounding and global equipotential. At the same time, the three-dimensional continuous conductive network is constructed, the three-dimensional integrated low-resistance channel of the down conductor, double flexible modules and vertical grounding body is formed, the three-dimensional synergistic effect of high conductivity, high corrosion resistance and high strength is realized, the performance bottleneck of the traditional grounding material in the harsh environment is broken through, the modular design supports the equipotential connection of multiple modules, adapts to the grounding net of any voltage grade tower, and is especially suitable for special scenes such as high acid and alkali strong corrosion, high soil resistivity and excavation limited distribution transformer area, and significantly reduces the construction difficulty and comprehensive cost. In addition, the graphene endows the grounding module with self-healing function, can monitor the impedance in real time and trigger the self-healing pulse, realizes zero failure and zero maintenance, is suitable for a wide temperature range of-40 DEG C to 80 DEG C, any pH value soil, has no corrosion and no pollution, provides an efficient, low-cost and long-life grounding solution for the power, rail transit, communication and other industries, and has significant economic and social benefits.

[0033] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A compact flexible graphene module and vertical ground integration device, comprising a graphene flexible ground module (1) and a graphene composite vertical ground electrode (2), characterized in that: The graphene flexible grounding module (1) is provided with two groups, and the two groups of graphene flexible grounding modules (1) are connected with first lead wires (3); the graphene composite vertical grounding electrode (2) is vertically connected with the first lead wire (3); One end of one group of graphene flexible grounding modules (1) is connected with a second lead wire (4), and the second lead wire (4) is used for connecting a down conductor. 2.The compact flexible graphene module and vertical direct ground integration device according to claim 1, characterized in that: The graphene composite vertical grounding electrode (2) comprises a graphene woven layer (5), a stainless steel pipe (6) and an ion slow-release agent (7), the stainless steel pipe (6) is arranged on the inner side of the graphene woven layer (5), the ion slow-release agent (7) is filled in the inner side of the stainless steel pipe (6), and an ion slow-release agent release hole (8) is arranged below the outer side of the stainless steel pipe (6). 3.The compact flexible graphene module and vertical ground integration device according to claim 1, characterized in that: The upper side of one side of the graphene woven layer (5) is connected with a graphene lead-out electrode (9), and the graphene lead-out electrode (9) is connected with the first lead wire (3) through a first connecting piece (10). 4.The compact flexible graphene module and vertical ground integration device according to claim 3, characterized in that: The second lead wire (4) is connected with the down conductor through a second connecting piece (11). 5.The compact flexible graphene module and vertical ground integration device according to claim 4, characterized in that: The first connecting piece (10) and the second connecting piece (11) are both stainless steel adapters. 6.The compact flexible graphene module and vertical ground integration device according to claim 1, wherein: The down conductor is a high-strength graphene down conductor (12), and one end of the high-strength graphene down conductor (12) is connected with a first connecting head (13). 7.The compact flexible graphene module and vertical ground integration device according to claim 1, wherein: The down conductor is a round steel high polymer film-coated down conductor (14), and one end of the round steel high polymer film-coated down conductor (14) is connected with a second connecting head (15). 8.The compact flexible graphene module and vertical ground integration device according to claim 1, wherein: The graphene flexible grounding module (1) adopts a multi-layer gradient impedance design, the topmost layer is a laser-induced graphene high-resistance layer with a micro-crack network, which is used to quickly form a uniform surface discharge channel under a nanosecond-level lightning impact and suppress local arcs; the middle layer is a continuous graphene film with extremely high in-plane electrical conductivity, which bears the main discharge of power frequency short-circuit current and lightning current; the bottom layer is a nano forest constructed by vertical graphene arrays, and the local field enhancement effect of the tips thereof is used to reduce the contact resistance between the graphene composite vertical grounding electrode (2) and the soil to one tenth of that of traditional galvanized steel, the three layers are bridged by rivet-type silver nanowires, and each layer reversibly slips when deformed. 9.The compact flexible graphene module and vertical ground integration device according to claim 8, characterized in that: Fluorinated graphene nanosheets are introduced as a reversible sacrificial layer on the surface of the graphene flexible grounding module (1), when micro-cracks appear in the repeated bending process, the C-F bonds in the fluorinated graphene nanosheets preferentially break and release fluorine ions, which recombine with the graphene dangling bonds at the crack tip to form a local sp3 hybrid rivet, reducing the crack propagation rate. 10.The compact flexible graphene module and vertical ground integration device according to claim 9, characterized in that: The first lead wire (3) and the second lead wire (4) are both formed by graphene wires, and the intermediate filler is high-purity flake graphite as a conductive material.

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