Lightning protection grounding method for photovoltaic modules installed on floating bodies in lakes

Abstract

The present invention discloses a lightning protection and grounding method for a photovoltaic assembly arranged on a floating body in a lake, solves the problem of how to develop a simple and reliable lightning protection and grounding mechanism for grounding a photovoltaic assembly on a floating body on a lake surface, and belongs to the field of photovoltaic power generation. A main grounding grid (104) on the floating body is arranged between a first floating body (102) and a second floating body (133), and a first photovoltaic assembly grounding wire (105) is connected to the main grounding grid on the floating body. A first connecting wire (108) is connected to a first grounding wire clamp (107), and the lower end of the first connecting wire is connected to a first floating body anchoring truss (106). A first floating body anchoring system anchor rope (109) is connected to the first floating body anchoring system anchor rope, an anchor rope eye (125) is connected to the anchor rope eye, a common anchor rope for two floating bodies is connected to the anchor rope eye, and an anchor block is connected to the lower end of the common anchor rope for two floating bodies, thereby improving the grounding effect.

Description

Technical Field

[0001] The present invention relates to a photovoltaic assembly on a floating body in a lake, and in particular to a lightning protection grounding mechanism and a grounding method for a photovoltaic assembly for solar power generation arranged on a floating body in a lake. Background Art

[0002] In areas with direct sunlight, some photovoltaic power generation modules are installed on floating bodies in lakes. The photovoltaic power generation modules on the floating bodies need to be protected from lightning strikes and grounded with grounding wires to guide lightning into the earth. The grounding wires of the existing photovoltaic modules on the floating bodies are connected to the grounding network on the lakeshore through grounding wires. There are also methods that extend the grounding wires of the photovoltaic modules on the floating bodies and directly place them under the water surface. The contact between the grounding wires below the water surface and the water is used to ground the grounding wires on the water surface, thereby achieving the purpose of spreading the lightning current. The grounding effects of these two grounding methods are both unsatisfactory. How to develop a simple, reliable lightning protection grounding mechanism and grounding method that is suitable for the grounding characteristics of photovoltaic modules on floating bodies on the lake surface has become a problem that needs to be solved on site. Summary of the Invention

[0003] The present invention provides a lightning protection grounding method for a photovoltaic module arranged on a floating body in a lake, solving the technical problem of how to develop a simple and reliable lightning protection grounding mechanism that is adapted to the grounding characteristics of photovoltaic modules on a floating body on a lake surface.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The overall concept of the present invention is as follows: a main grounding grid connected between each floating body is set up, and the grounding grid is connected to the anchor rope of the surface floating body anchoring system through multiple points. The grounding grid is connected to the vertical grounding electrode prefabricated in the anchor block through the anchor rope. The vertical grounding electrode protrudes a certain length from the bottom surface of the anchor block. After the anchor block is thrown into the water, the vertical grounding electrode in the anchor block will sink to the bottom of the water with the anchor block and be inserted into the bottom ground of the lake under the action of the gravity of the anchor block, thereby realizing effective electrical connection between the grounding grid on the floating body and the bottom ground; since there are many anchor ropes around the floating body, it is only necessary to connect the grounding grid on the floating body at multiple points. By connecting with the anchor rope, it is easy to connect more points of the floating body grounding network to the water through the anchor rope and finally to the underwater ground, thereby increasing the grounding effect; in order to ensure the reliable connection between the grounding wire on the floating body and the anchor rope of the anchoring system, the effective connection between each section of the anchor rope in the water, and the effective connection between the anchor rope and the vertical grounding body embedded in the anchor block, this patented design adopts a U-shaped clamp. In order to adapt to the movement of the floating body and the change of water depth, the flexible movable anchor rope connection method of the chicken heart ring is adopted, which not only ensures the effective connection of the grounding network on the floating body through the anchor rope to the underwater ground, but also does not affect the free movement of the anchor rope.

[0006] A first photovoltaic assembly is provided on the first floating body, a second photovoltaic assembly is provided on the second floating body, a first photovoltaic assembly grounding wire is provided on the first photovoltaic assembly, a second photovoltaic assembly grounding wire is provided on the second photovoltaic assembly, a first floating body anchoring truss is provided on the first floating body, a second floating body anchoring truss is provided on the second floating body, a main grounding grid on the floating body is provided between the first floating body and the second floating body, the grounding wire of the first photovoltaic assembly is connected to the main grounding grid on the floating body; a first grounding wire clamp is provided on the main grounding grid on the floating body, and a grounding wire is connected to the first grounding wire clamp. There is a first connecting line, the lower end of the first connecting line is connected to the first floating body anchoring truss; the first floating body anchoring system anchor rope is connected to the first floating body anchoring truss, the lower end of the first floating body anchoring system anchor rope is connected to the anchor rope eye, the anchor rope eye is connected to the common anchor rope of the two floating bodies, the lower end of the common anchor rope of the two floating bodies is connected to the anchor block, a metal needle grounding electrode is fixedly arranged in the anchor block, the anchor block is arranged on the bottom surface of the lake bottom under the lake water, the lower end of the metal needle grounding electrode is inserted into the soil on the bottom surface of the lake bottom, and the upper end of the metal needle grounding electrode is connected to the lower end of the common anchor rope of the two floating bodies.

[0007] A first floating body anchoring truss lifting ring is fixedly provided on the first floating body anchoring truss, and the upper end of the anchor rope of the first floating body anchoring system is fixedly connected to the first floating body anchoring truss lifting ring through a first U-shaped clamp. At the upper end of the anchor rope of the first floating body anchoring system, a reserved section of the upper end of the first floating body anchoring system anchor rope and a heart-shaped ring at the upper end of the first floating body anchoring system anchor rope are respectively provided. The heart-shaped ring at the upper end of the anchor rope of the first floating body anchoring system is movably connected to the first floating body anchoring truss lifting ring.

[0008] The metal needle grounding electrode is prefabricated and fixed in the anchor block, with the anchor block lifting ring of the metal needle grounding electrode exposed on the upper top surface of the anchor block, and the ground needle section of the metal needle grounding electrode exposed on the lower bottom surface of the anchor block, which is inserted into the soil at the bottom of the lake; the lower end of the common anchor rope of the two floating bodies is fixedly connected to the anchor block lifting ring through a second U-shaped clamp, and the lower end of the common anchor rope of the two floating bodies is respectively provided with a reserved section of the lower end of the common anchor rope of the two floating bodies and a heart-shaped ring at the lower end of the common anchor rope of the two floating bodies, which is movably sleeved on the anchor block lifting ring; the lower bottom surface of the anchor block is a roughened surface.

[0009] The lower end of the anchor rope of the first buoy anchoring system is provided with a reserved section of the lower end of the anchor rope of the first buoy anchoring system and a heart-shaped ring at the lower end of the anchor rope of the first buoy anchoring system. The heart-shaped ring at the lower end of the anchor rope of the first buoy anchoring system is movably connected to the anchor rope lifting ring. The upper end of the anchor rope shared by the two buoys is provided with a reserved section of the upper end of the anchor rope shared by the two buoys and a heart-shaped ring at the upper end of the anchor rope shared by the two buoys. The heart-shaped ring at the upper end of the anchor rope shared by the two buoys is movably connected to the anchor block lifting ring. The end portion of the reserved section of the lower end of the anchor rope of the first buoy anchoring system and the end portion of the reserved section of the upper end of the anchor rope shared by the two buoys are fixedly connected together by a third U-shaped clamp.

[0010] The second floating body anchoring system anchor rope is connected to the second floating body anchoring truss, and the lower end of the second floating body anchor rope is connected to the anchor rope lifting ring; a second grounding wire clamp is provided on the main grounding grid on the floating body, and a second connecting wire is connected to the second grounding wire clamp, and the lower end of the second connecting wire is connected to the second floating body anchoring truss.

[0011] A lightning protection and grounding method for a photovoltaic assembly installed on a floating body in a lake, comprising lake water, a first floating body and a second floating body arranged at intervals in the lake water, a first photovoltaic assembly installed on the first floating body, a second photovoltaic assembly installed on the second floating body, a first photovoltaic assembly grounding wire installed on the first photovoltaic assembly, a second photovoltaic assembly grounding wire installed on the second photovoltaic assembly, a first floating body anchoring truss installed on the first floating body, and a second floating body anchoring truss installed on the second floating body, characterized by the following steps:

[0012] Step 1: Install a main grounding grid on the floating body between the first and second floating bodies, and connect the first photovoltaic module grounding wire to the main grounding grid on the floating body; connect the upper end of the first connecting wire to the main grounding grid on the floating body through a first grounding wire clamp, and connect the lower end of the first connecting wire to the first floating body anchor truss;

[0013] The second step is to prefabricate the anchor block. A metal needle grounding electrode is embedded in the anchor block so that the anchor block lifting ring of the metal needle grounding electrode is exposed on the upper surface of the anchor block and the grounding needle section of the metal needle grounding electrode is exposed on the lower bottom surface of the anchor block. The lower bottom surface of the anchor block is roughened to increase its friction.

[0014] Step 3: Connect the anchor rope of the first buoy anchoring system to the first buoy anchoring truss, connect the anchor rope eye to the lower end of the anchor rope of the first buoy anchoring system, connect the common anchor rope of the two buoys to the anchor rope eye, and connect the anchor block eye of the metal needle grounding electrode to the lower end of the common anchor rope of the two buoys;

[0015] Step 4: Put the anchor block into the lake water, sink it to the bottom of the lake below the first floating body, and insert the grounding needle section of the metal needle grounding electrode into the soil at the bottom of the lake.

[0016] A first floating body anchoring truss lifting ring is fixedly provided on the first floating body anchoring truss; the upper end of the anchor rope of the first floating body anchoring system is first passed through the first floating body anchoring truss lifting ring to form a heart-shaped ring at the upper end of the anchor rope of the first floating body anchoring system, and the heart-shaped ring at the upper end of the anchor rope of the first floating body anchoring system is fixed with a U-shaped clamp, so that the heart-shaped ring at the upper end of the anchor rope of the first floating body anchoring system and the first floating body anchoring truss lifting ring are movably connected together, and then, after leaving a reserved section at the upper end of the anchor rope of the first floating body anchoring system, finally, the upper end of the anchor rope of the first floating body anchoring system is fixedly connected to the first floating body anchoring truss lifting ring through the first U-shaped clamp.

[0017] First, pass the lower end of the anchor rope of the first buoy anchoring system through the anchor rope eye to form a heart-shaped ring at the lower end of the anchor rope of the first buoy anchoring system, and then use a U-shaped clamp to fix the heart-shaped ring at the lower end of the anchor rope of the first buoy anchoring system, and leave a reserved section at the lower end of the anchor rope of the first buoy anchoring system; pass the upper end of the anchor rope shared by the two buoys through the anchor rope eye to form a heart-shaped ring at the upper end of the anchor rope shared by the two buoys, and then use a U-shaped clamp to fix the heart-shaped ring at the upper end of the anchor rope shared by the two buoys, and leave a reserved section at the upper end of the anchor rope shared by the two buoys; fix the end of the reserved section at the lower end of the anchor rope of the first buoy anchoring system and the end of the reserved section at the upper end of the anchor rope shared by the two buoys through a third U-shaped clamp.

[0018] Pass the lower end of the common anchor rope of the two buoys through the anchor block eye first to form a heart-shaped ring at the lower end of the common anchor rope of the two buoys, and use a U-shaped clamp to fix the heart-shaped ring at the lower end of the common anchor rope of the two buoys, and leave a reserved section at the lower end of the common anchor rope of the two buoys. Use a second U-shaped clamp to fix the end of the reserved section at the lower end of the common anchor rope of the two buoys to the anchor block eye.

[0019] The second floating body anchoring system anchor rope is connected to the second floating body anchoring truss, and the lower end of the second floating body anchor rope is connected to the anchor rope lifting ring; a second grounding wire clamp is provided on the main grounding grid on the floating body, and a second connecting wire is connected to the second grounding wire clamp, and the lower end of the second connecting wire is connected to the second floating body anchoring truss.

[0020] The present invention combines a floating photovoltaic grounding grid with an anchoring system, and utilizes the characteristic of the anchoring system being connected underwater to form a path for the grounding grid on the floating body through the anchor rope and the vertical grounding electrode prefabricated in the anchor block and enter the underwater ground, thereby improving the grounding effect; the invention innovatively adopts a U-shaped clamp, innovatively adopts a reserved anchor rope length and fixes the reserved anchor rope to the floating body anchoring truss or the anchor block fixing ring on the anchor block through the U-shaped clamp, thereby realizing a reliable connection between the floating body grounding wire and the anchor rope, and the anchor rope and the pre-buried vertical grounding electrode in the anchor block, so that it maintains the flexible movement of the chicken ring adopted by the anchoring system to adapt to the movement of the floating body and the change of water depth, and ensures the effective connection of the grounding grid on the floating body to the underwater ground through the anchor rope; the invention innovatively adopts a U-shaped clamp, innovatively adopts a reserved anchor rope length and fixes the reserved anchor rope to the floating body anchoring truss or the anchor block fixing ring through the U-shaped clamp, thereby realizing a reliable connection between the floating body grounding wire and the anchor rope, and the anchor rope and the pre-buried vertical grounding electrode in the anchor block, A U-shaped clamp is used. At the anchor ring, an innovative method is to reserve a length of anchor rope and reliably connect the reserved anchor rope with the anchor rope on the other side of the anchor ring through a U-shaped clamp, so as to realize a reliable connection between the anchor ropes on both sides of the anchor ring or between two sections of anchor rope, so that the anchor ring can maintain flexible movement between the chicken ring and the anchor ring, and ensure the reliable and effective connection of the anchor ropes on both sides of the anchor ring; the innovative method is to prefabricate the vertical grounding electrode into the anchor block of the anchor system, and the vertical grounding electrode protrudes a certain length from the bottom surface of the anchor block. After the anchor block is thrown into the water, the vertical grounding electrode in the anchor block will sink to the bottom of the water together with the anchor block, and be inserted into the underwater ground under the action of the gravity of the anchor block, so as to realize effective contact between the grounding grid on the floating body and the underwater ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 This is a diagram showing the connection relationship between the first photovoltaic module grounding wire and the main grounding grid on the floating body through the first grounding wire clamp of the present invention;

[0023] Figure 3 yes Figure 1 The partial enlarged view at point A in the middle is a diagram showing the relationship between the anchor rope of the first buoy anchoring system and the first buoy;

[0024] Figure 4 yes Figure 1 The partial enlarged view at point B is a schematic diagram of the connection structure at the anchor rope eye 125;

[0025] Figure 5 yes Figure 1 The local enlarged view at point C in the middle is a schematic diagram of the connection structure at the anchor block. DETAILED DESCRIPTION

[0026] The present invention is described in detail below with reference to the accompanying drawings:

[0027] A lightning protection grounding mechanism for a photovoltaic assembly installed on a floating body in a lake includes lake water 101. A first floating body 102 and a second floating body 133 are arranged at intervals in the lake water 101. A first photovoltaic assembly 103 is arranged on the first floating body 102, and a second photovoltaic assembly 113 is arranged on the second floating body 133. A first photovoltaic assembly grounding wire 105 is arranged on the first photovoltaic assembly 103, and a second photovoltaic assembly grounding wire 114 is arranged on the second photovoltaic assembly 113. A first floating body anchoring truss 106 is arranged on the first floating body 102, and a second floating body anchoring truss 115 is arranged on the second floating body 133. A main grounding grid 104 on the floating body is arranged between the first floating body 102 and the second floating body 133, and the first photovoltaic assembly grounding wire 105 is connected to the main grounding grid 104 on the floating body; a first grounding wire clamp 107 is arranged on the main grounding grid 104 on the floating body, and a first grounding wire clamp 107 is connected to the first grounding wire clamp 107. The connecting line 108 is connected to the first buoy anchoring truss 106 at its lower end. The first buoy anchoring system anchor rope 109 is connected to the first buoy anchoring truss 106. The lower end of the first buoy anchoring system anchor rope 109 is connected to an anchor rope eye 125. The anchor rope eye 125 is connected to the anchor rope common to the two buoys. The lower end of the anchor rope common to the two buoys 126 is connected to an anchor block 110. A metal pin is fixed to the anchor block 110. The grounding electrode 111 and the anchor block 110 are set on the bottom surface 112 of the lake bottom under the lake water 101. The lower end of the metal needle grounding electrode 111 is inserted into the soil of the bottom surface 112 of the lake bottom, and the upper end of the metal needle grounding electrode 111 is connected to the lower end of the anchor rope 126 shared by the two floating bodies; when the anchor block 110 is transported on the ground, the lower end of the vertical metal needle grounding electrode 111 can be bent onto the lower bottom surface of the anchor block 110. When in use, the lower end of the metal needle grounding electrode 111 is folded back to a vertical state.

[0028] A first floating body anchoring truss lifting ring 130 is fixedly provided on the first floating body anchoring truss 106. The upper end of the first floating body anchoring system anchor rope 109 is fixedly connected to the first floating body anchoring truss lifting ring 130 through a first U-shaped clamp 132. At the upper end of the first floating body anchoring system anchor rope 109, a first floating body anchoring system anchor rope upper end reserved section 134 and a first floating body anchoring system anchor rope upper end heart-shaped ring 131 are respectively provided. The first floating body anchoring system anchor rope upper end heart-shaped ring 131 is movably connected to the first floating body anchoring truss lifting ring 130. The reserved anchor rope length does not affect the free movement of the anchor rope, and at the same time ensures reliable grounding connectivity.

[0029] The metal needle grounding electrode 111 is prefabricated and fixed in the anchor block 110. The anchor block lifting ring 120 of the metal needle grounding electrode 111 is exposed on the upper top surface of the anchor block 110, and the ground needle section of the metal needle grounding electrode 111 is exposed on the lower bottom surface of the anchor block 110. The ground needle section is inserted into the soil of the bottom surface 112 of the lake bottom; the lower end of the common anchor rope 126 of the two floating bodies is fixedly connected to the anchor block lifting ring 120 through a second U-shaped clamp 124, and the lower end of the common anchor rope 126 of the two floating bodies is respectively provided with a reserved section 121 at the lower end of the common anchor rope of the two floating bodies and a heart-shaped ring 122 at the lower end of the common anchor rope of the two floating bodies. The heart-shaped ring 122 at the lower end of the common anchor rope of the two floating bodies is movably connected to the anchor block lifting ring 120; the lower bottom surface 119 of the anchor block 110 is a roughened surface.

[0030] At the lower end of the first buoy anchoring system anchor rope 109, there are respectively provided a first buoy anchoring system anchor rope lower end reserved section 135 and a first buoy anchoring system anchor rope lower end heart-shaped ring 127, which is movably connected to the anchor rope lifting ring 125. At the upper end of the common anchor rope 126 of the two buoys, there are respectively provided a two-buoy common anchor rope upper end reserved section 123 and a two-buoy common anchor rope upper end heart-shaped ring 128, which is movably connected to the anchor block lifting ring 125. The end of the first buoy anchoring system anchor rope lower end reserved section 135 and the end of the two buoy common anchor rope upper end reserved section 123 are fixedly connected together by a third U-shaped clamp 129.

[0031] A second floating body anchoring system anchor rope 118 is connected to the second floating body anchoring truss 115, and the lower end of the second floating body anchoring system anchor rope 118 is connected to the anchor rope eye 125; a second grounding wire clamp 116 is provided on the main grounding grid 104 on the floating body, and a second connecting line 117 is connected to the second grounding wire clamp 116, and the lower end of the second connecting line 117 is connected to the second floating body anchoring truss 115; the connection method of the second floating body anchoring system anchor rope 118 and the second floating body anchoring truss 115, as well as the connection method of the second floating body anchoring system anchor rope 118 and the anchor block eye 125, are the same as the connection method of the first floating body anchoring system anchor rope 109.

[0032] A lightning protection and grounding method for a photovoltaic assembly installed on a floating body in a lake includes lake water 101. A first floating body 102 and a second floating body 133 are arranged at intervals in the lake water 101. A first photovoltaic assembly 103 is arranged on the first floating body 102, and a second photovoltaic assembly 113 is arranged on the second floating body 133. A first photovoltaic assembly grounding wire 105 is arranged on the first photovoltaic assembly 103, and a second photovoltaic assembly grounding wire 114 is arranged on the second photovoltaic assembly 113. A first floating body anchoring truss 106 is arranged on the first floating body 102, and a second floating body anchoring truss 115 is arranged on the second floating body 133. The method is characterized by the following steps:

[0033] Step 1: Install the main grounding grid 104 between the first floating body 102 and the second floating body 133, and connect the first photovoltaic module grounding wire 105 to the main grounding grid 104. Connect the upper end of the first connecting wire 108 to the main grounding grid 104 via the first grounding wire clamp 107, and connect the lower end of the first connecting wire 108 to the first floating body anchoring truss 106.

[0034] The second step is to prefabricate the anchor block 110. A metal grounding electrode 111 is embedded in the anchor block 110. The anchor block eye 120 of the metal grounding electrode 111 is exposed on the upper surface of the anchor block 110, and the grounding needle section of the metal grounding electrode 111 is exposed on the lower surface of the anchor block 110. The lower surface 119 of the anchor block 110 is roughened to increase its friction.

[0035] Step 3: Connect the anchor rope 109 of the first buoy anchoring system to the first buoy anchoring truss 106. Connect the anchor rope eye 125 to the lower end of the anchor rope 109. Connect the common anchor rope 126 of the two buoys to the anchor rope eye 125. Connect the anchor block eye 120 of the metal needle grounding electrode 111 to the lower end of the common anchor rope 126 of the two buoys.

[0036] Step 4: put the anchor block 110 into the lake water 101 so that the anchor block 110 sinks to the lake bottom 112 below the first floating body 102 and the grounding needle section of the metal needle grounding electrode 111 is inserted into the soil of the lake bottom 112.

[0037] A first floating body anchoring truss lifting ring 130 is fixedly provided on the first floating body anchoring truss 106; first, the upper end of the first floating body anchoring system anchor rope 109 is passed through the first floating body anchoring truss lifting ring 130 to form a heart-shaped ring 131 at the upper end of the first floating body anchoring system anchor rope, and the heart-shaped ring 131 at the upper end of the first floating body anchoring system anchor rope is fixed with a U-shaped clamp, so that the heart-shaped ring 131 at the upper end of the first floating body anchoring system anchor rope and the first floating body anchoring truss lifting ring 130 are movably connected together, and then, after leaving a reserved section 134 at the upper end of the first floating body anchoring system anchor rope, finally, the upper end of the first floating body anchoring system anchor rope 109 is fixedly connected to the first floating body anchoring truss lifting ring 130 through the first U-shaped clamp 132.

[0038] The lower end of the anchor rope 109 of the first buoy anchoring system is first passed through the anchor rope eye 125 to form a heart-shaped ring 127 at the lower end of the anchor rope of the first buoy anchoring system, and then the heart-shaped ring 127 at the lower end of the anchor rope of the first buoy anchoring system is fixed with a U-shaped clamp, leaving a reserved section 135 at the lower end of the anchor rope of the first buoy anchoring system; the upper end of the common anchor rope 126 of the two buoys is passed through the anchor rope eye 125 to form a heart-shaped ring 128 at the upper end of the common anchor rope of the two buoys, and then the heart-shaped ring 128 at the upper end of the common anchor rope of the two buoys is fixed with a U-shaped clamp, leaving a reserved section 123 at the upper end of the common anchor rope of the two buoys; the end of the reserved section 135 at the lower end of the anchor rope of the first buoy anchoring system and the end of the reserved section 123 at the upper end of the common anchor rope of the two buoys are fixed together by a third U-shaped clamp 129.

[0039] The lower end of the common anchor rope 126 of the two buoys is first passed through the anchor block eye 120 to form a heart-shaped ring 122 at the lower end of the common anchor rope of the two buoys, and the heart-shaped ring 122 at the lower end of the common anchor rope of the two buoys is fixed with a U-shaped clamp, leaving a reserved section 121 at the lower end of the common anchor rope of the two buoys. The end of the reserved section 121 at the lower end of the common anchor rope of the two buoys is fixedly connected to the anchor block eye 120 through a second U-shaped clamp 124.

[0040] A second floating body anchoring system anchor rope 118 is connected to the second floating body anchoring truss 115, and the lower end of the second floating body anchoring system anchor rope 118 is connected to the anchor rope eye 125; a second grounding wire clamp 116 is provided on the main grounding grid 104 on the floating body, and a second connecting line 117 is connected to the second grounding wire clamp 116, and the lower end of the second connecting line 117 is connected to the second floating body anchoring truss 115.

Claims

1. A lightning protection grounding method for a photovoltaic assembly installed on a floating body in a lake, comprising lake water (101), a first floating body (102) and a second floating body (133) arranged at intervals in the lake water (101), a first photovoltaic assembly (103) arranged on the first floating body (102), a second photovoltaic assembly (113) arranged on the second floating body (133), a first photovoltaic assembly grounding wire (105) arranged on the first photovoltaic assembly (103), a second photovoltaic assembly grounding wire (114) arranged on the second photovoltaic assembly (113), a first floating body anchoring truss (106) arranged on the first floating body (102), and a second floating body anchoring truss (115) arranged on the second floating body (133), characterized by the following steps: The first step is to set a main grounding grid (104) on the floating body between the first floating body (102) and the second floating body (133), and connect the first photovoltaic module grounding wire (105) to the main grounding grid (104) on the floating body; connect the upper end of the first connecting wire (108) to the main grounding grid (104) on the floating body through the first grounding wire clamp (107), and connect the lower end of the first connecting wire (108) to the first floating body anchoring truss (106); The second step is to prefabricate the anchor block (110), embed a metal needle grounding electrode (111) in the anchor block (110), expose the anchor block ring (120) of the metal needle grounding electrode (111) on the upper surface of the anchor block (110), expose the grounding needle section of the metal needle grounding electrode (111) on the lower bottom surface of the anchor block (110), and roughen the lower bottom surface (119) of the anchor block (110) to increase its friction; Step 3: Connect the anchor rope (109) of the first floating body anchoring system to the first floating body anchoring truss (106), connect the anchor rope eye (125) to the lower end of the anchor rope (109) of the first floating body anchoring system, connect the anchor rope eye (125), connect the common anchor rope (126) of the two floating bodies to the anchor rope eye (125), and connect the anchor block eye (120) of the metal needle grounding electrode (111) to the lower end of the common anchor rope (126) of the two floating bodies; The fourth step is to put the anchor block (110) into the lake water (101), so that the anchor block (110) sinks to the bottom surface (112) of the lake below the first floating body (102), and the grounding needle section of the metal needle grounding electrode (111) is inserted into the soil of the bottom surface (112) of the lake.

2. The lightning protection grounding method for a photovoltaic module installed on a floating body in a lake according to claim 1, characterized in that: A first floating body anchoring truss lifting ring (130) is fixedly provided on the first floating body anchoring truss (106); the upper end of the first floating body anchoring system anchor rope (109) is first passed through the first floating body anchoring truss lifting ring (130) to form a heart-shaped ring (131) at the upper end of the first floating body anchoring system anchor rope, and the heart-shaped ring (131) at the upper end of the first floating body anchoring system anchor rope is fixed with a U-shaped clamp so that the heart-shaped ring (131) at the upper end of the first floating body anchoring system anchor rope and the first floating body anchoring truss lifting ring (130) are movably connected together, and then, after leaving a reserved section (134) at the upper end of the first floating body anchoring system anchor rope, the upper end of the first floating body anchoring system anchor rope (109) is finally fixedly connected to the first floating body anchoring truss lifting ring (130) through the first U-shaped clamp (132).

3. The lightning protection grounding method for a photovoltaic module installed on a floating body in a lake according to claim 2, characterized in that: The lower end of the anchor rope (109) of the first buoy anchoring system is first passed through the anchor rope eye (125) to form a heart-shaped ring (127) at the lower end of the anchor rope of the first buoy anchoring system. The heart-shaped ring (127) at the lower end of the anchor rope of the first buoy anchoring system is then fixed with a U-shaped clamp, and a reserved section (135) at the lower end of the anchor rope of the first buoy anchoring system is left. The upper end of the anchor rope (126) shared by the two buoys is passed through the anchor rope eye (125) to form a heart-shaped ring (128) at the upper end of the anchor rope shared by the two buoys. The heart-shaped ring (128) at the upper end of the anchor rope shared by the two buoys is then fixed with a U-shaped clamp, and a reserved section (123) at the upper end of the anchor rope shared by the two buoys is left. The end of the reserved section (135) at the lower end of the anchor rope of the first buoy anchoring system and the end of the reserved section (123) at the upper end of the anchor rope shared by the two buoys are fixed together through a third U-shaped clamp (129).

4. The lightning protection grounding method for a photovoltaic module installed on a floating body in a lake according to claim 3, characterized in that: The lower end of the common anchor rope (126) of the two buoys is first passed through the anchor block lifting ring (120) to form a heart-shaped ring (122) at the lower end of the common anchor rope of the two buoys, and the heart-shaped ring (122) at the lower end of the common anchor rope of the two buoys is fixed with a U-shaped clamp, and a reserved section (121) at the lower end of the common anchor rope of the two buoys is left. The end of the reserved section (121) at the lower end of the common anchor rope of the two buoys is fixedly connected to the anchor block lifting ring (120) through a second U-shaped clamp (124).

5. The lightning protection grounding method for a photovoltaic module installed on a floating body in a lake according to claim 4, characterized in that: A second floating body anchoring system anchor rope (118) is connected to the second floating body anchoring truss (115), and the lower end of the second floating body anchoring system anchor rope (118) is connected to the anchor rope eye (125); a second grounding wire clamp (116) is provided on the main grounding grid (104) on the floating body, and a second connecting wire (117) is connected to the second grounding wire clamp (116), and the lower end of the second connecting wire (117) is connected to the second floating body anchoring truss (115).

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