CN115892366A - Lightning protection grounding method for floating photovoltaic power generation device in lake - Google Patents
Lightning protection grounding method for floating photovoltaic power generation device in lake Download PDFInfo
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- 238000010248 power generation Methods 0.000 title claims abstract description 21
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- 239000002184 metal Substances 0.000 claims description 27
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Abstract
The invention discloses a lightning protection grounding method of a floating type photovoltaic power generation device in a lake, which solves the problem of how to develop a simple and reliable lightning protection grounding mechanism for grounding a photovoltaic module on a lake surface floating body; a floating body upper main grounding grid (104) is arranged between the first floating body (102) and the second floating body (133), and a first photovoltaic assembly grounding wire (105) is connected with the floating body upper main grounding grid; a first connecting wire (108) is connected to the first grounding wire clamp (107), and the lower end of the first connecting wire is connected with the first floating body anchoring truss (106); a first floating body anchoring system anchor rope (109) is connected to the first floating body anchoring truss, an anchor rope hanging ring (125) is connected to the lower end of the first floating body anchoring system anchor rope, two floating body shared anchor ropes (126) are connected to the anchor rope hanging ring (125), and an anchor block is connected to the lower end of the two floating body shared anchor ropes; the grounding effect is improved.
Description
Technical Field
The invention relates to a photovoltaic power generation device floating in a lake, in particular to a lightning protection grounding system and a lightning protection grounding method of a floating photovoltaic power generation device in a lake.
Background
In a direct sunlight area, some photovoltaic power generation components are arranged on a floating body in a lake, a floating boat is arranged near the floating body, the floating boat is loaded with photovoltaic power generation matching equipment, and the matching equipment and a photovoltaic power generation device jointly form a photovoltaic power generation system floating on the lake surface; the photovoltaic power generation assembly on the floating body needs lightning protection and is provided with a grounding wire to guide lightning into the ground; the grounding wire of the photovoltaic assembly on the existing floating body is connected to a grounding grid on the lakeshore ground through the grounding wire, and the grounding wire of the photovoltaic assembly on the floating body is also directly placed under the water surface through the extended grounding wire, and the grounding wire on the water surface is grounded by utilizing the contact of the grounding wire under the water surface and water, so that the aim of diffusing lightning current is fulfilled; the existing grounding wire of the floating pontoon is connected to a grounding net on the lake shore ground through a grounding wire, and the grounding wire on the floating pontoon is also directly put under the water surface through an extended grounding wire, and the grounding wire under the water surface is contacted with water to ground the grounding wire on the water surface, so that the aim of diffusing lightning current is fulfilled; the grounding effects of the two grounding methods are not ideal, and how to develop a lightning protection grounding mechanism and a grounding method which are simple and reliable and adapt to the grounding characteristics of the photovoltaic module on the lake surface floating body becomes a problem to be solved on site.
Disclosure of Invention
The invention provides a lightning protection grounding method for a floating type photovoltaic power generation device in a lake, and solves the technical problem of how to develop a simple and reliable lightning protection grounding mechanism which is suitable for the grounding characteristics of a photovoltaic power generation system on the lake surface.
The invention solves the technical problems by the following technical scheme:
the general concept of the invention is: arranging a main floating body grounding net communicated among all the floating bodies, connecting the grounding net with an anchor rope of a water surface floating body anchoring system through a plurality of points, and connecting the grounding net into water through the anchor rope; arranging a main grounding net of the floating pontoon on the floating pontoon, and connecting grounding wires of all equipment borne on the floating pontoon with the main grounding net of the floating pontoon, but the grounding wires of the lightning rod of the floating pontoon are required to be arranged independently and isolated from the main grounding net of the floating pontoon; then connecting the main grounding net of the floating vessel and the main grounding net of the floating body together, and connecting the main grounding net of the floating vessel and the main grounding net of the floating body to a vertical grounding electrode prefabricated in an anchor block in the anchor block, wherein the vertical grounding electrode extends out of the bottom surface of the anchor block by a certain length; because the anchor ropes are numerous around the floating body, the grounding net on the floating body is connected with the anchor ropes only at multiple points, so that more points of the grounding net of the floating body can be easily accessed into water through the anchor ropes and finally into the underwater ground, and the grounding effect is improved; in order to ensure the reliable connection of the ground wire on the floating body and the anchor rope of the anchoring system, the effective connection between each section of the anchor rope in water and the effective connection of the anchor rope and the vertical grounding body embedded in the anchor block, the U-shaped clamp is adopted in the patent design, and the chicken heart ring flexible moving anchor rope connection mode adopted for adapting to the movement of the floating body and the change of water depth not only ensures the effective communication of the grounding net on the floating body which is connected into the ground at the bottom through the anchor rope, but also does not influence the free movement of the anchor rope.
A lightning protection grounding system of a floating type photovoltaic power generation device in a lake comprises lake water, wherein floating bodies and floating ship floating bodies which are arranged in an array manner float on the lake surface of the lake water; a floating body of the floating vessel is provided with a floating deck, and the floating deck is respectively provided with an inverter, a transformer, a ring main unit, a lighting and video monitoring system and a floating lightning rod; the floating body in array arrangement is provided with a first floating body and a second floating body at intervals, a first photovoltaic assembly is arranged on the first floating body, a second photovoltaic assembly is arranged on the second floating body, a first photovoltaic assembly grounding wire is arranged on the first photovoltaic assembly, a second photovoltaic assembly grounding wire is arranged on the second photovoltaic assembly, a first floating body anchoring truss is arranged on the first floating body, a second floating body anchoring truss is arranged on the second floating body, a first floating body anchoring rope and a second floating body anchoring rope are respectively arranged on the floating body, a floating ship main grounding net, a grounding wire of an inverter, a grounding wire of a transformer, a grounding wire of a ring main cabinet and a grounding wire of a lighting and video monitoring system are respectively connected with the floating ship main grounding net on a floating ship deck, and the floating ship main grounding net is connected with the second floating body anchoring rope; the grounding wire of the floating pontoon lightning rod is connected with the first floating pontoon anchor rope; a main grounding grid on the floating body is arranged between the first floating body and the second floating body, and the grounding wire of the first photovoltaic assembly is connected with the main grounding grid on the floating body; a first grounding wire clamp is arranged on the main grounding grid on the floating body, a first connecting wire is connected to the first grounding wire clamp, and the lower end of the first connecting wire is connected with the first floating body anchoring truss; the first floating body anchoring truss is connected with a first floating body anchoring system anchor rope, the lower end of the first floating body anchoring system anchor rope is connected with an anchor rope hanging ring, the anchor rope hanging ring is connected with two floating body shared anchor ropes, the lower end of the two floating body shared anchor ropes is connected with an 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 in the soil body on the bottom surface of the lake bottom, and the upper end of the metal needle grounding electrode is connected with the lower end of the two floating body shared anchor ropes; the main grounding grid of the floating vessel is connected with the main grounding grid of the floating body, and the main grounding grid of the floating body is connected with the main grounding grid of the shore through a connecting wire of the main grounding grid of the shore.
The first floating body anchoring truss is fixedly provided with a first floating body anchoring truss hanging ring, the upper end of an anchor rope of a first floating body anchoring system is fixedly connected with the first floating body anchoring truss hanging ring through a first U-shaped clamp, the upper end of the anchor rope of the first floating body anchoring system is respectively provided with a reserved section at the upper end of the anchor rope of the first floating body anchoring system and 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 movably sleeved on the first floating body anchoring truss hanging ring.
The metal needle grounding electrode is prefabricated and fixed in the anchor block, an anchor block lifting ring of the metal needle grounding electrode is exposed on the upper top surface of the anchor block, a ground inserting needle section of the metal needle grounding electrode is exposed on the lower bottom surface of the anchor block, and the ground inserting needle section is inserted into the soil body on the bottom surface of the lake bottom; the lower end heads of the anchor ropes shared by the two floating bodies are fixedly connected with the anchor block lifting ring through a second U-shaped clamp, the lower ends of the anchor ropes shared by the two floating bodies are respectively provided with a reserved section at the lower end of the anchor rope shared by the two floating bodies and a chicken heart ring at the lower end of the anchor rope shared by the two floating bodies, and the chicken heart ring at the lower end of the anchor rope shared by the two floating bodies is movably sleeved on the anchor block lifting ring; the lower bottom surface of the anchor block is a roughened surface.
The lower end of the anchor rope of the first floating body anchoring system is respectively provided with a reserved section at the lower end of the anchor rope of the first floating body anchoring system and a heart ring at the lower end of the anchor rope of the first floating body anchoring system, the heart ring at the lower end of the anchor rope of the first floating body anchoring system is movably sleeved on the anchor rope hanging ring, the upper end of the shared anchor rope of the two floating bodies is respectively provided with a reserved section at the upper end of the shared anchor rope of the two floating bodies and a heart ring at the upper end of the shared anchor rope of the two floating bodies, the heart ring at the upper end of the shared anchor rope of the two floating bodies is movably sleeved on the anchor block hanging ring, and the end part of the reserved section at the lower end of the anchor rope of the first floating body anchoring system and the end part of the reserved section at the upper end of the shared anchor rope of the two floating bodies are fixedly connected together through a third U-shaped fixture.
The second floating body anchoring truss is connected with a second floating body anchoring system anchor rope, and the lower end of the second floating body anchoring system anchor rope is connected to an anchor rope hanging ring; and a second grounding wire clamp is arranged on the main grounding grid on the floating body, a second connecting wire is connected onto the second grounding wire clamp, and the lower end of the second connecting wire is connected with a second floating body anchoring truss.
A lightning protection grounding method of a floating type photovoltaic power generation device in a lake comprises that lake water floats on the lake surface of the lake water with floating bodies and floating ship floating bodies which are arranged in an array manner; a floating body of the floating vessel is provided with a floating deck, and the floating deck is respectively provided with an inverter, a transformer, a ring main unit, a lighting and video monitoring system and a floating lightning rod; the floating bodies arranged in an array manner are provided with a first floating body and a second floating body at intervals, the first floating body is provided with a first photovoltaic component, the second floating body is provided with a second photovoltaic component, the first photovoltaic component is provided with a first photovoltaic component grounding wire, the second photovoltaic component is provided with a second photovoltaic component grounding wire, the first floating body is provided with a first floating body anchoring truss, and the second floating body is provided with a second floating body anchoring truss;
the method is characterized by comprising the following steps:
the method comprises the following steps that firstly, a main floating pontoon grounding net is arranged on a floating pontoon deck, a grounding wire of an inverter, a grounding wire of a transformer, a grounding wire of a ring main unit and a grounding wire of a lighting and video monitoring system are respectively connected with the main floating pontoon grounding net, and the main floating pontoon grounding net is connected with a second floating pontoon anchor rope; connecting a grounding wire of a lightning rod of the floating pontoon with a first anchor rope of the floating pontoon;
secondly, arranging a main grounding grid on the floating body between the first floating body and the second floating body, and connecting the grounding wire of the first photovoltaic assembly with the main grounding grid on the floating body; connecting the upper end of a first connecting wire with a main grounding grid on the floating body through a first grounding wire clamp, and connecting the lower end of the first connecting wire with a first floating body anchoring truss;
thirdly, connecting a main grounding grid of the floating vessel with a main grounding grid on the floating body, and connecting the main grounding grid on the floating body with the main grounding grid on the bank through a connecting line of the main grounding grid on the bank;
fourthly, prefabricating an anchor block, wherein a metal needle grounding electrode is pre-embedded in the anchor block, so that an anchor block lifting ring of the metal needle grounding electrode is exposed on the upper top surface of the anchor block, a grounding pin inserting section of the metal needle grounding electrode is exposed on the lower bottom surface of the anchor block, and the lower bottom surface of the anchor block is roughened to increase the friction force of the anchor block;
fifthly, connecting a first floating body anchoring system anchor rope on the first floating body anchoring truss, connecting an anchor rope hanging ring at the lower end of the first floating body anchoring system anchor rope, connecting two floating bodies sharing anchor ropes on the anchor rope hanging ring, and connecting an anchor block hanging ring of a metal needle grounding electrode at the lower end of the two floating bodies sharing anchor ropes;
and sixthly, throwing the anchor block into the lake water, so that the anchor block is sunk to the bottom surface of the lake bottom below the first floating body, and the ground inserting needle section of the metal needle grounding electrode is inserted into the soil body on the bottom surface of the lake bottom.
A first floating body anchoring truss hoisting ring is fixedly arranged on the first floating body anchoring truss; the upper end of the anchor rope of the first floating body anchoring system penetrates through the first floating body anchoring truss hanging ring to form a heart ring at the upper end of the anchor rope of the first floating body anchoring system, a U-shaped clamp is used for fixing the heart ring at the upper end of the anchor rope of the first floating body anchoring system, the heart ring at the upper end of the anchor rope of the first floating body anchoring system is movably sleeved with the first floating body anchoring truss hanging ring, then a reserved section at the upper end of the anchor rope of the first floating body anchoring system is reserved, and finally the upper end of the anchor rope of the first floating body anchoring system is fixedly connected with the first floating body anchoring truss hanging ring through the first U-shaped clamp.
The lower end of the anchor rope of the first floating body anchoring system firstly penetrates through the anchor rope hanging ring to form a heart ring at the lower end of the anchor rope of the first floating body anchoring system, then the heart ring at the lower end of the anchor rope of the first floating body anchoring system is fixed by a U-shaped clamp, and a reserved section at the lower end of the anchor rope of the first floating body anchoring system is reserved; the upper end of the anchor rope shared by the two floating bodies penetrates through the anchor rope hanging ring to form a heart ring at the upper end of the anchor rope shared by the two floating bodies, the heart ring at the upper end of the anchor rope shared by the two floating bodies is fixed by a U-shaped clamp, and a reserved section at the upper end of the anchor rope shared by the two floating bodies is reserved; and fixedly connecting the end part of the reserved section at the lower end of the anchor rope of the first floating body anchoring system and the end part of the reserved section at the upper end of the anchor rope shared by the two floating bodies together through a third U-shaped clamp.
The lower end of the anchor rope shared by the two floating bodies firstly penetrates through the anchor block hanging ring to form a heart-shaped ring at the lower end of the anchor rope shared by the two floating bodies, the heart-shaped ring at the lower end of the anchor rope shared by the two floating bodies is fixed by a U-shaped clamp, a reserved section at the lower end of the anchor rope shared by the two floating bodies is reserved, and the end of the reserved section at the lower end of the anchor rope shared by the two floating bodies is fixedly connected with the anchor block hanging ring through a second U-shaped clamp.
A 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 anchoring system anchor rope is connected to the anchor rope hanging ring; and a second grounding wire clamp is arranged on the main grounding net on the floating body, a second connecting wire is connected to the second grounding wire clamp, and the lower end of the second connecting wire is connected with the second floating body anchoring truss.
According to the invention, the floating photovoltaic grounding grid is combined with the anchoring system, and by utilizing the characteristic that the anchoring system is connected into the water, the grounding grid on the floating body forms a passage through the anchor rope and the vertical grounding electrode prefabricated in the anchor block and is connected into the ground under the water, so that the grounding effect is improved; the U-shaped clamp is innovatively adopted, the length of the reserved anchor rope is innovatively adopted, the reserved anchor rope is fixed with the anchor block fixing ring on the floating body anchoring truss or the anchor block through the U-shaped clamp, and the reliable connection of the floating body grounding wire and the anchor rope and the vertical grounding electrode pre-embedded in the anchor block is realized, so that the flexible movement of a chicken heart ring adopted by an anchoring system for adapting to the movement of the floating body and the change of water depth is kept, and the effective connection of the grounding net on the floating body, which is connected into the underwater ground through the anchor rope, is also ensured; the U-shaped clamp is innovatively adopted, the length of the anchor rope is innovatively adopted at the anchoring flying ring, the reserved anchor rope is reliably connected with the anchor rope at the other side of the anchoring flying ring through the U-shaped clamp, and the reliable connection between the anchor ropes at two sides of the anchoring flying ring or between two sections of anchor ropes is realized, so that the anchoring flying ring not only keeps the flexible movement between the heart ring and the anchoring flying ring, but also ensures the reliable and effective communication of the anchor ropes at two sides of the anchoring flying ring; the method is characterized in that a vertical grounding electrode is prefabricated in an anchor block of an anchoring system, the vertical grounding electrode extends out of the bottom surface of the anchor block by a certain length, and after the anchor block is thrown into water, the vertical grounding electrode in the anchor block sinks into the water bottom along with the anchor block and is inserted into the water bottom ground under the action of the gravity of the anchor block, so that the grounding net on the floating body is effectively contacted with the water bottom ground.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the ground structure of the vessel of the present invention;
FIG. 3 is a schematic diagram of the grounding structure of the photovoltaic module of the present invention;
FIG. 4 is a diagram of the connection of the ground wire of the first photovoltaic module of the present invention to the main grounding grid on the floating body via the first ground clip;
FIG. 5 is a partial enlarged view at A in FIG. 1 showing the relationship between the mooring lines of the first buoyant anchoring system and the first buoyant body;
FIG. 6 is an enlarged view of a portion of FIG. 1 at B, showing the attachment at the mooring line eye 125;
fig. 7 is a partially enlarged view of the connection structure at the anchor block at C in fig. 1.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
a lightning protection grounding system of a lake floating type photovoltaic power generation device comprises lake water 101, wherein floating bodies and floating ship floating bodies 201 which are arranged in an array mode float on the lake surface of the lake water 101; a floating body 202 of the floating body 201 of the floating vessel is arranged, and an inverter 203, a transformer 204, a ring main unit 205, a lighting and video monitoring system 206 and a lightning rod 207 of the floating vessel are respectively arranged on the floating body 202 of the floating vessel; a first floating body 102 and a second floating body 133 are arranged in the floating bodies arranged in an array manner at intervals, a first photovoltaic module 103 is arranged on the first floating body 102, a second photovoltaic module 113 is arranged on the second floating body 133, a first photovoltaic module grounding wire 105 is arranged on the first photovoltaic module 103, a second photovoltaic module grounding wire 114 is arranged on the second photovoltaic module 113, a first floating body anchoring truss 106 is arranged on the first floating body 102, a second floating body anchoring truss 115 is arranged on the second floating body 133, a first floating vessel anchoring rope 208 and a second floating vessel anchoring rope 210 are respectively arranged on the floating vessel floating body 201, a floating vessel main grounding net 209, a grounding wire of an inverter 203, a grounding wire of a transformer 204, a grounding wire of a ring main cabinet 205 and a grounding wire of a lighting and video monitoring system 206 are respectively connected with the floating vessel main grounding net 209, and the floating vessel main grounding net 209 are connected with the second floating vessel anchoring rope 210; the grounding wire of the floating pontoon lightning rod 207 is connected with the first floating pontoon anchor rope 208; a floating body upper main grounding grid 104 is arranged between the first floating body 102 and the second floating body 133, and a first photovoltaic assembly grounding wire 105 is connected with the floating body upper main grounding grid 104; a first grounding wire clamp 107 is arranged on the main grounding grid 104 on the floating body, a first connecting wire 108 is connected to the first grounding wire clamp 107, and the lower end of the first connecting wire 108 is connected with a first floating body anchoring truss 106; the first floating body anchoring truss 106 is connected with a first floating body anchoring system anchor rope 109, the lower end of the first floating body anchoring system anchor rope 109 is connected with an anchor rope hanging ring 125, the anchor rope hanging ring 125 is connected with two floating body shared anchor ropes 126, the lower end of the two floating body shared anchor ropes 126 is connected with an anchor block 110, a metal needle grounding electrode 111 is fixedly arranged in the anchor block 110, the anchor block 110 is arranged on the lake bottom surface 112 under the lake water 101, the lower end of the metal needle grounding electrode 111 is inserted in the soil body of the lake bottom surface 112, and the upper end of the metal needle grounding electrode 111 is connected with the lower end of the two floating body shared anchor ropes 126; the main grounding grid 209 of the floating vessel is connected with the main grounding grid 104 on the floating body, and the main grounding grid 104 on the floating body is connected with the main grounding grid 301 on the shore through a main grounding grid connecting wire 302 on the shore.
A first floating body anchoring truss hanging ring 130 is fixedly arranged on the first floating body anchoring truss 106, the upper end of the first floating body anchoring system anchor rope 109 is fixedly connected with the first floating body anchoring truss hanging ring 130 through a first U-shaped clamp 132, the upper end of the first floating body anchoring system anchor rope 109 is respectively provided with 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 ring 131, and the first floating body anchoring system anchor rope upper end heart ring 131 is movably sleeved on the first floating body anchoring truss hanging ring 130; the reserved length of the anchor rope ensures that the anchor rope does not influence the free movement of the anchor rope, and simultaneously ensures the reliable connectivity of the ground connection.
The metal needle grounding electrode 111 is prefabricated and fixed in the anchor block 110, the anchor block hanging ring 120 of the metal needle grounding electrode 111 is exposed on the upper top surface of the anchor block 110, the ground inserting needle section of the metal needle grounding electrode 111 is exposed on the lower bottom surface of the anchor block 110, and the ground inserting needle section is inserted into the soil body of the lake bottom surface 112; the lower end heads of the anchor ropes 126 shared by the two floating bodies are fixedly connected with the anchor block lifting ring 120 through a second U-shaped clamp 124, the lower ends of the anchor ropes 126 shared by the two floating bodies are respectively provided with a reserved section 121 at the lower end of the anchor rope shared by the two floating bodies and a heart ring 122 at the lower end of the anchor rope shared by the two floating bodies, and the heart ring 122 at the lower end of the anchor rope shared by the two floating bodies is movably sleeved on the anchor block lifting ring 120; the lower bottom surface 119 of anchor block 110 is a roughened surface.
The lower end of the anchor rope 109 of the first floating body anchoring system is respectively provided with a reserved section 135 at the lower end of the anchor rope of the first floating body anchoring system and a heart ring 127 at the lower end of the anchor rope of the first floating body anchoring system, the heart ring 127 at the lower end of the anchor rope of the first floating body anchoring system is movably sleeved on the anchor rope suspension ring 125, the upper end of the anchor rope 126 shared by the two floating bodies is respectively provided with a reserved section 123 at the upper end of the anchor rope shared by the two floating bodies and a heart ring 128 at the upper end of the anchor rope shared by the two floating bodies, the heart ring 128 at the upper end of the anchor rope shared by the two floating bodies is movably sleeved on the anchor block suspension ring 125, and the end part of the reserved section 135 at the lower end of the anchor rope of the first floating body anchoring system and the end part of the reserved section 123 at the upper end of the anchor rope shared by the two floating bodies are fixedly connected together through a third U-shaped clamp 129.
A second buoyant anchoring system anchor line 118 is connected to the second buoyant anchor truss 115, and the lower end of the second buoyant anchoring system anchor line 118 is connected to an anchor line eye 125; a second grounding wire clamp 116 is arranged on the main grounding grid 104 on the floating body, 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 with a second floating body anchoring truss 115; the second buoyant anchorage system anchor lines 118 are connected to the second buoyant anchor truss 115 and the second buoyant anchorage system anchor lines 118 are connected to the anchor block eyes 125 in the same manner as the first buoyant anchorage system anchor lines 109.
A lightning protection grounding method of a lake floating type photovoltaic power generation device comprises the steps that lake water 101 floats on the lake surface of the lake water 101 with floating bodies and floating ship floating bodies 201 which are arranged in an array mode; a floating body 202 of the floating body 201 of the floating vessel is arranged, and an inverter 203, a transformer 204, a ring main unit 205, a lighting and video monitoring system 206 and a lightning rod 207 of the floating vessel are respectively arranged on the floating body 202 of the floating vessel; a first floating body 102 and a second floating body 133 are arranged in the floating bodies arranged in an array manner at intervals, a first photovoltaic module 103 is arranged on the first floating body 102, a second photovoltaic module 113 is arranged on the second floating body 133, a first photovoltaic module grounding wire 105 is arranged on the first photovoltaic module 103, a second photovoltaic module grounding wire 114 is arranged on the second photovoltaic module 113, a first floating body anchoring truss 106 is arranged on the first floating body 102, a second floating body anchoring truss 115 is arranged on the second floating body 133,
the method is characterized by comprising the following steps:
firstly, arranging a main floating pontoon grounding grid 209 on a floating pontoon deck 202, respectively connecting a grounding wire of an inverter 203, a grounding wire of a transformer 204, a grounding wire of a ring main unit 205 and a grounding wire of an illumination and video monitoring system 206 with the main floating pontoon grounding grid 209, and connecting the main floating pontoon grounding grid 209 with a second floating pontoon anchor rope 210; connecting the ground line of the floating vessel lightning rod 207 with the first floating vessel mooring line 208;
secondly, arranging a floating body upper main grounding grid 104 between the first floating body 102 and the second floating body 133, and connecting the first photovoltaic assembly grounding wire 105 with the floating body upper main grounding grid 104; connecting the upper end of a first connecting wire 108 with the upper main floating body grounding grid 104 through a first grounding wire clamp 107, and connecting the lower end of the first connecting wire 108 to a first floating body anchoring truss 106;
thirdly, connecting the main grounding grid 209 of the floating ship with the main grounding grid 104 on the floating body, and connecting the main grounding grid 104 on the floating body with the main grounding grid 301 on the shore through a main grounding grid connecting wire 302 on the shore;
fourthly, prefabricating the anchor block 110, wherein the metal pin grounding electrode 111 is pre-embedded in the anchor block 110, so that the anchor block hanging ring 120 of the metal pin grounding electrode 111 is exposed on the upper top surface of the anchor block 110, the ground inserting pin section of the metal pin grounding electrode 111 is exposed on the lower bottom surface of the anchor block 110, and the lower bottom surface 119 of the anchor block 110 is roughened to increase the friction force of the anchor block;
fifthly, connecting a first floating body anchoring system anchor rope 109 on the first floating body anchoring truss 106, connecting an anchor rope hanging ring 125 at the lower end of the first floating body anchoring system anchor rope 109, connecting two floating bodies to share an anchor rope 126 on the anchor rope hanging ring 125, and connecting an anchor block hanging ring 120 of a metal needle grounding electrode 111 at the lower end of the two floating bodies to share the anchor rope 126;
and sixthly, throwing the anchor blocks 110 into the lake water 101, so that the anchor blocks 110 sink to the bottom surface 112 of the lake below the first floating body 102, and inserting the ground pin sections of the metal pin grounding electrodes 111 into the soil body of the bottom surface 112 of the lake.
A first buoyant hull anchoring truss hoisting ring 130 is fixedly arranged on the first buoyant hull anchoring truss 106; the upper end of the first buoyant body anchoring system anchor rope 109 is firstly passed through the first buoyant body anchoring truss hanging ring 130 to form a first buoyant body anchoring system anchor rope upper end heart ring 131, and the first buoyant body anchoring system anchor rope upper end heart ring 131 is fixed by a U-shaped clamp, so that the first buoyant body anchoring system anchor rope upper end heart ring 131 and the first buoyant body anchoring truss hanging ring 130 are movably sleeved together, then, after a first buoyant body anchoring system anchor rope upper end reserved section 134 is left, finally, the upper end of the first buoyant body anchoring system anchor rope 109 is fixedly connected with the first buoyant body anchoring truss hanging ring 130 through the first U-shaped clamp 132.
The lower end of the anchor rope 109 of the first floating body anchoring system firstly passes through the anchor rope hanging ring 125 to form a heart-shaped ring 127 at the lower end of the anchor rope of the first floating body anchoring system, then the heart-shaped ring 127 at the lower end of the anchor rope of the first floating body anchoring system is fixed by a U-shaped clamp, and a reserved section 135 at the lower end of the anchor rope of the first floating body anchoring system is reserved; the upper end of the anchor rope 126 shared by the two floating bodies passes through the anchor rope hanging ring 125 to form a chicken heart ring 128 at the upper end of the anchor rope shared by the two floating bodies, the chicken heart ring 128 at the upper end of the anchor rope shared by the two floating bodies is fixed by a U-shaped clamp, and a reserved section 123 at the upper end of the anchor rope shared by the two floating bodies is reserved; the end of the reserved section 135 at the lower end of the anchor line of the first floating body anchoring system and the end of the reserved section 123 at the upper end of the anchor line shared by the two floating bodies are fixedly connected together through a third U-shaped clamp 129.
The lower end of the anchor rope 126 shared by the two floating bodies firstly passes through the anchor block hanging ring 120 to form a heart-shaped ring 122 at the lower end of the anchor rope shared by the two floating bodies, the heart-shaped ring 122 at the lower end of the anchor rope shared by the two floating bodies is fixed by a U-shaped clamp, a reserved section 121 at the lower end of the anchor rope shared by the two floating bodies is reserved, and the end of the reserved section 121 at the lower end of the anchor rope shared by the two floating bodies is fixedly connected with the anchor block hanging ring 120 through a second U-shaped clamp 124.
A second buoyant anchoring system anchor line 118 is connected to the second buoyant anchor truss 115, and the lower end of the second buoyant anchoring system anchor line 118 is connected to an anchor line eye 125; a second ground wire clamp 116 is provided on the upper main ground net 104 of the buoyant hull, a second connection wire 117 is connected to the second ground wire clamp 116, and the lower end of the second connection wire 117 is connected to the second buoyant hull anchoring truss 115.
Claims (5)
1. A lightning protection grounding method of a lake floating type photovoltaic power generation device comprises the steps that lake water (101) floats on the lake surface of the lake water (101) with floating bodies and floating ship floating bodies (201) which are arranged in an array mode; a floating body (201) of the floating vessel is provided with a floating deck (202), and the floating deck (202) is respectively provided with an inverter (203), a transformer (204), a ring main unit (205), a lighting and video monitoring system (206) and a floating lightning rod (207); the floating bodies arranged in an array manner are provided with a first floating body (102) and a second floating body (133) at intervals, the first floating body (102) is provided with a first photovoltaic component (103), the second floating body (133) is provided with a second photovoltaic component (113), the first photovoltaic component (103) is provided with a first photovoltaic component grounding wire (105), the second photovoltaic component (113) is provided with a second photovoltaic component grounding wire (114), the first floating body (102) is provided with a first floating body anchoring truss (106), the second floating body (133) is provided with a second floating body anchoring truss (115),
the method is characterized by comprising the following steps:
firstly, arranging a main floating body grounding net (209) on a floating ship deck (202), respectively connecting a grounding wire of an inverter (203), a grounding wire of a transformer (204), a grounding wire of a ring main unit (205) and a grounding wire of a lighting and video monitoring system (206) with the main floating body grounding net (209), and connecting the main floating body grounding net (209) with a second floating body anchor rope (210); connecting the ground wire of the floating pontoon lightning rod (207) with the first floating pontoon anchor line (208);
secondly, arranging a floating body upper main grounding grid (104) between the first floating body (102) and the second floating body (133), and connecting a first photovoltaic assembly grounding wire (105) with the floating body upper main grounding grid (104); connecting the upper end of a first connecting line (108) with a main grounding grid (104) on the floating body through a first grounding wire clamp (107), and connecting the lower end of the first connecting line (108) to a first floating body anchoring truss (106);
thirdly, connecting the main grounding grid (209) of the floating ship with the main grounding grid (104) on the floating body, and connecting the main grounding grid (104) on the floating body with the main grounding grid (301) on the shore through a main grounding grid connecting wire (302) on the shore;
fourthly, prefabricating an anchor block (110), wherein a metal pin grounding electrode (111) is embedded in the anchor block (110), so that an anchor block hanging ring (120) of the metal pin grounding electrode (111) is exposed on the upper top surface of the anchor block (110), a grounding pin inserting section of the metal pin grounding electrode (111) is exposed on the lower bottom surface of the anchor block (110), and the lower bottom surface (119) of the anchor block (110) is roughened to increase the friction force of the anchor block;
fifthly, connecting a first floating body anchoring system anchor rope (109) on the first floating body anchoring truss (106), connecting an anchor rope hanging ring (125) at the lower end of the first floating body anchoring system anchor rope (109), connecting two floating body shared anchor ropes (126) on the anchor rope hanging ring (125), and connecting an anchor block hanging ring (120) of a metal needle grounding electrode (111) at the lower end of the two floating body shared anchor ropes (126);
and sixthly, throwing the anchor block (110) into the lake water (101), so that the anchor block (110) sinks to the bottom surface (112) of the lake bottom below the first floating body (102), and the ground pin inserting section of the metal pin grounding electrode (111) is inserted into the soil body of the bottom surface (112) of the lake bottom.
2. The lightning protection grounding method for the floating photovoltaic power generation device in the lake as claimed in claim 1, wherein a first buoyant anchoring truss hoisting ring (130) is fixedly arranged on the first buoyant anchoring truss (106); the upper end of a first floating body anchoring system anchor rope (109) penetrates through a first floating body anchoring truss hanging ring (130) to form a heart ring (131) at the upper end of the first floating body anchoring system anchor rope, a U-shaped clamp is used for fixing the heart ring (131) at the upper end of the first floating body anchoring system anchor rope, the heart ring (131) at the upper end of the first floating body anchoring system anchor rope is movably sleeved with the first floating body anchoring truss hanging ring (130), then a reserved section (134) at the upper end of the first floating body anchoring system anchor rope is reserved, and finally the upper end of the first floating body anchoring system anchor rope (109) is fixedly connected with the first floating body anchoring truss hanging ring (130) through the first U-shaped clamp (132).
3. The lightning protection grounding method for the floating photovoltaic power generation device in the lake according to claim 2, wherein the lower end of the anchor rope (109) of the first floating body anchoring system is firstly passed through the anchor rope hanging ring (125) to form a heart ring (127) at the lower end of the anchor rope of the first floating body anchoring system, then the heart ring (127) at the lower end of the anchor rope of the first floating body anchoring system is fixed by a U-shaped clamp, and a reserved section (135) at the lower end of the anchor rope of the first floating body anchoring system is reserved; the upper end of an anchor rope (126) shared by the two floating bodies penetrates through an anchor rope hanging ring (125) to form a heart ring (128) at the upper end of the anchor rope shared by the two floating bodies, the heart ring (128) at the upper end of the anchor rope shared by the two floating bodies is fixed by a U-shaped clamp, and a reserved section (123) at the upper end of the anchor rope shared by the two floating bodies is reserved; the end part of the reserved section (135) at the lower end of the anchor rope of the first floating body anchoring system and the end part of the reserved section (123) at the upper end of the anchor rope shared by the two floating bodies are fixedly connected together through a third U-shaped clamp (129).
4. The lightning protection grounding method for the floating photovoltaic power generation device in the lake according to claim 3, characterized in that the lower end of the anchor rope (126) shared by the two floating bodies is firstly passed through the anchor block hanging ring (120) to form a chicken heart ring (122) at the lower end of the anchor rope shared by the two floating bodies, the chicken heart ring (122) at the lower end of the anchor rope shared by the two floating bodies is fixed by a U-shaped clamp, a reserved section (121) at the lower end of the anchor rope shared by the two floating bodies is reserved, and the end of the reserved section (121) at the lower end of the anchor rope shared by the two floating bodies is fixedly connected with the anchor block hanging ring (120) by a second U-shaped clamp (124).
5. The lightning protection grounding method for the floating photovoltaic power generation device in the lake as claimed in claim 4, wherein a second buoyant anchoring system anchor rope (118) is connected to the second buoyant anchoring truss (115), and the lower end of the second buoyant anchoring system anchor rope (118) is connected to the anchor rope hoisting ring (125); and a second grounding wire clamp (116) is arranged on the main grounding grid (104) on the floating body, 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 with a second floating body anchoring truss (115).
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