Rotary-type floating solar photovoltaic power plant including floating table and rotaing shaft

Abstract

The present invention relates to a rotary floating photovoltaic power plant comprising a floating table and a rotary shaft and, more specifically, to a rotary floating photovoltaic power plant comprising a floating table and a rotary shaft wherein photovoltaic modules around the circumference of a turntable are rotated according to the sun by means of the rotary shaft that is rotated with respect to the turntable floating on the water.

Description

[Technical field] The present invention relates to a rotary-type floating solar photovoltaic power plant comprising floating table and rotating shaft, and more specifically, to a rotary-type photovoltaic power plant comprising a floating table and a rotation shaft for enabling a photovoltaic modules around a table to rotate along the sun by a rotating shaft which rotates with respect to the table floating on the water. [Background technology] In general, solar photovoltaic power generation is a power generation method that converts sunlight into electric power by a photovoltaic cell, and generates electricity by receiving sunlight by a photovoltaic cell made of a semiconductor material. The photovoltaic power generation system includes a module, a storage battery, and a power converting device. The module includes a photovoltaic cell that generates electricity by a photoelectric effect when sunlight is incident. The photovoltaic power generation configured as described above has an advantage in that installation and operation are easy and rapid installation is possible compared to other power generation methods, but since the amount of power generation is proportional to the installation area, it is inevitable to secure a site for installation and operation in order to secure a desired amount of power generation. However it is not easy to secure a site that meets the location condition. Although it is possible to secure a small amount of land by the method of using a wall surface a building, a roof, and a small-scale bare ground in order to secure a site for escaping from such circumstances, there are also problems in that it is difficult to install a photovoltaic cell structure and to design the photovoltaic cell structure for this, and thus, the cost of power generation is increased, and the difficulty of maintenance is increased due to the overspread of small-scale power generation facilities. In order to solve the above problem, a method for installing and operating a photovoltaic power generation device on water such as lakes, reservoirs, dams, public waters, and the ocean is being sought. Only a portion of the water surface is used as a fish farm or leisure space, and thus it is expected that a site of the water surface having a larger area than a land area can be secured as an operation space for photovoltaic power generation facilities. In general, as disclosed in Korean Patent Registration No. 10-1744254, Korean Patent No. 10-1013339, and Korean Patent No. 10-1056607, a rotary-type floating photovoltaic power generation apparatus has a structure in which a rotation shaft rotates about a pillar on which the rotation shaft is vertically erected. Such a structure is problematic in public use because it is expensive to install in places where lakes made by making seawalls in the sea, deep dams or reservoirs, and thus is less economical. In such prior arts, when a large change in water level occurs, power generation efficiency is inevitably reduced by the shading of vertically erected columns. In addition, public waters with high flow velocity have a weak ground, and the risk of overturn is large when a strong flow velocity occurs, so safety of the apparatus cannot be guaranteed. [Detailed description of the invention] [Technical problems] The present invention has been made in an effort to provide a rotary-type floating solar photovoltaic power plant including floating table and rotary shaft, in which a plurality of wires are connected from an upper portion of the rotating shaft rotatable at the center of the floating table to photovoltaic power generation modules floating around the table, and a driving unit capable of rotating the rotating shaft is provided at the side of the table so that the photovoltaic power generation modules around the table can stably rotate together with the rotating shaft along the sun even in an area having deep water or with large changing in water level. [Technical Solution] A rotary-type floating solar photovoltaic power plant including floating table and rotating shaft according to the present invention, comprises: a center table floating on the water; a center rotating shaft rotatably installed at the center of the center table; a photovoltaic power generation unit floating on the water around the center table; a plurality of rotation driving ropes, each of which extending from a first shackle disposed in a circumferential direction on the upper portion of the center rotating shaft to a second shackle connected to the photovoltaic power generation unit, to rotate the photovoltaic power generation unit in the rotating direction of the center rotating shaft or the opposite direction; and a rotation driving unit including a rotation driving motor installed on the center table to rotate the center rotating shaft. The rotary-type floating solar photovoltaic power plant according to the present invention further comprises: a first mooring unit for restricting rotation of the center table, including a plurality of pairs of first anchors positioned at a lower side of the center table, and a plurality of pairs of first mooring ropes, wherein each of the first mooring ropes is connected to the different first anchor among the pair of the first anchors and crossed each other to be connected to the center table; and a second mooring unit comprising a plurality of second anchors positioned at the circumference of the photovoltaic power generating unit, a plurality of second mooring ropes extending from the lower portion of the center table to each of the second anchors, a plurality of auxiliary ropes extending from the edge side of the photovoltaic power generating unit to each of the second mooring ropes, and a plurality of pull adjustment winches mounted on the photovoltaic power generating unit so as to wind the auxiliary ropes such that the second mooring ropes are pulled toward a water surface side. It is preferable that the second mooring unit further includes a plurality of anti-tangling weights connected to the second mooring rope with the auxiliary ropes in between. It is preferable that he rotary-type floating solar photovoltaic power plant according to the present invention further comprises a buoyant body for connecting power generation unit, which is spaced apart at predetermined intervals along the perimeter of the center table between the photovoltaic power generation unit and the center table. The buoyant body has an outer side connected to the photovoltaic power generation unit by universal joint, and an inner side or upper portion on which the second shackle is mounted so as to be rotatable together with the photovoltaic power generation unit with respect to the center table. It is preferable that he rotary-type floating solar photovoltaic power plant according to the present invention further comprises a rotating table which is positioned at the central side of each of the plurality of photovoltaic power generation units arranged around the center table and rotate together with the photovoltaic power generation units, and a rotation support shaft mounted at a central side of the rotating table, The plurality of second shackles are installed along circumferences of each photovoltaic power generation units, which are formed in a circular shape, and one end of the rotation driving rope is connected to one of the first shackles, the rotation driving rope is connected to the plurality of second shackles while extending along the circumference of the photovoltaic power generation unit, and the other end of the rotation driving rope is connected another first shackles, such that one side and the other side of the rotation driving rope cross each other. It is preferable that he rotary-type floating solar photovoltaic power plant according to the present invention further comprises a rotation supporting table which is positioned at the central side of each of the plurality of photovoltaic power generation units positioned around the center table and restricted from rotation, a rotating shaft for power generation unit mounted at a central side of the rotation supporting table, and a plurality of rotation guide ropes connected from a plurality of third shackles installed on the upper portion of the rotating shaft for power generation unit along its circumferential direction to a plurality of fourth shackles provided in the photovoltaic power generation unit. The plurality of second shackles are installed along circumferences of each photovoltaic power generation unit, which is formed in a circular shape, and one end of the rotation driving rope is connected to one of the first shackles, the rotation driving rope is connected to the plurality of second shackles while extending along the circumference of the photovoltaic power generation unit, and the other end of the rotation driving rope is connected another first shackles, such that one side and the other side of the rotation driving rope cross each other. The center table may comprise: a cylindrical table body, on the center of which the center rotating shaft is rotatably mounted; a plurality of diagonal support units symmetrically disposed with the table body interposed therebetween, each of the plurality of diagonal support units comprising a pair of first downward pipes disposed in parallel with each other on the upper portion of the table body and inclined downward as being radially away from the center rotating shaft, a pair of first upward pipes disposed in parallel with each other on the lower portion of the table body and inclined upward as being radially away from the center rotating shaft, and a pair of first horizontal pipes disposed between the first downward pipes and the first upward pipes; a plurality of side support units extending radially from an outer peripheral surface of the table body between the adjacent diagonal support units, each of the plurality of side support units comprising a second downward pipe inclined downward as being far away from the center rotating shaft, a second upward pipe inclined upward as being far away from the center rotating shaft and disposed below the second downward pipe, and a second horizontal pipe disposed between the second downward pipe and the second upward pipe; a corner connection member mounted on an end portion of the diagonal support unit; a side connection member mounted on an end portion of the side support unit; and a connection pipe, the longitudinal center of which is coupled to one of the side connection members and the both sides of which are connected to the corner connection members disposed on either side of the side connection member. [Effects of the invention] In the rotary-type floating solar photovoltaic power plant comprising floating table and rotating shaft according to the present invention, one side of a plurality of rotation driving ropes is connected, in the circumferential direction, to the rotating shaft located at the center side of the center table and the other side of the rotation driving ropes is connected to a photovoltaic power generation unit located around the center table, thereby the rotation of the photovoltaic power generation unit caused by the rotation of the rotating shaft is facilitated to improve the efficiency of photovoltaic power generation. Also, in the rotary-type floating solar photovoltaic power plant including floating table and rotating shaft according to an embodiment of the present invention, one side of the rotation driving ropes is fixed to the center table and the other side of the rotation driving ropes is fixed to the center rotating shaft to restrict or release the rotation angle of center rotating shaft, thereby the rotation range of the photovoltaic power generation unit based on the orientation of the sun may be fixed, which improving the rotation control efficiency of the photovoltaic power generation units and improving the photovoltaic power generation efficiency. The rotary-type floating solar photovoltaic power plant including floating table and rotating shaft according to the present invention has an advantage of stably mooring through a dual mooring structures of the first mooring unit fixing the center table and the second mooring unit including the second mooring rope extending from the outer side of the photovoltaic power generation unit to the center table. In addition, the rotary-type photovoltaic floating solar power generator including floating table and rotating shaft according to the present invention has an advantage that, when wind speed is equal to or higher than a predetermined value, the auxiliary rope connected to the edge side of the photovoltaic power generation unit is wound to pull the second mooring rope, thereby limiting the distortion or movement of the azimuth and enabling more stably mooring. [Brief Description of Drawings] FIG. 1 is a plan view of a rotary-type floating solar photovoltaic power plant including floating table and rotary shaft according to a first embodiment of the present invention. FIG. 2 is a perspective view of the rotating shaft and table of the rotary-type photovoltaic floating solar power plant of FIG. 1. FIG. 3 is a side cross-sectional view of the rotary-type floating solar photovoltaic power plant of FIG. 1. FIG. 4 is a plan view of the table and a first mooring unit of the rotary-type floating solar photovoltaic power plant of FIG. 1. FIG. 5 is a side view of the rotary-type floating solar photovoltaic power plant of FIG. 1. FIG. 6 is a plan view of a rotary-type floating solar photovoltaic power plant including floating table and rotating shaft according to a second embodiment of the present invention. FIG. 7 is a plan view of a rotary-type floating solar photovoltaic power plant including floating table and rotating shaft according to a third embodiment of the present invention. [Best mode of the invention] Hereinafter, a rotary-type floating solar photovoltaic power plant including floating table and rotating shaft according to the present invention will be described in detail with reference to the accompanying drawings. FIGS. 1 to 5 illustrate a rotary-type floating solar photovoltaic power plant 1 including a floating table and a rotating shaft according to a first embodiment of the present invention. According to an embodiment of the present invention, a rotary-type floating solar photovoltaic power plant 1 including floating table and rotating shaft comprises a center table 10 floating on the water surface; a center rotating shaft 50 rotatably installed on the center of the center table 10; a photovoltaic solar power generation unit 80 floating on the surface of the water around the center table 10; a plurality of rotation driving ropes 60, each of which extending from a plurality of first shackle 54 disposed in a circumferential direction on the upper portion of the center rotating shaft 50 to second shackles 92 connected to the photovoltaic power generation unit, to rotate the photovoltaic power generation unit in the direction being wounded around the center rotating shaft 50 in accordance with the rotation direction of the center rotating shaft 50; rotation driving unit 70; and a plurality of rotation angle limiting ropes 65. The rotation driving unit 70 includes a first gear 72 installed on the center rotating shaft 50, and a second gear 74 engaged with the first gear 72 and coupled to a driving shaft 78 of a rotation driving motor 77 installed on the center table 10. One side of each of the rotation angle limiting ropes 65 is fixed at the edge of the center table 10, and the other side of each of the rope 65 is fixed at a center rotating shaft 50, wherein the rotation angle limiting rope 65 is extended longer that the radius formed between the position where the limiting rope is connected to the center table 10 and the center rotating shaft 50, thereby being wound around the center rotating shaft 50 to limit a rotation angle of the center rotating shaft 50 and the photovoltaic power generation unit 80. In addition, the rotary-type floating solar photovoltaic power plant 1 including floating table and the rotating shaft according to the first embodiment of the present invention further includes a buoyant body 90 for connecting power generation units, which is spaced apart at predetermined intervals along the perimeter of the center table 10 between the photovoltaic power generation unit 80 and the center table 10. The buoyant body 90 has the outer side connected to the photovoltaic power generation unit 80 by a universal joint 95, and the inner side or upper portion of the buoyant body on which the second shackle 92 is mounted so as to be rotatable together with the photovoltaic power generation unit 80 with respect to the center table 10. In addition, the rotary-type floating solar photovoltaic power plant 1 including floating table and rotating shaft according to the first embodiment of the present invention further includes a first mooring unit 110 and a second mooring unit 120. The center table 10 comprises a table body 11 formed in a cylindrical shape on which the center rotating shaft 50 is rotatably mounted, and capable of floating on the water surface; and a frame unit 15. The frame unit includes an anchor connection unit 16 formed in a rectangular shape around the table body 11, a plurality of diagonal support units 35 connecting the corner sides of the anchor connection unit 16 and the table body 11, a plurality of side support units 45 extending from the outer circumferential surface of the table body 11 between the adjacent diagonal support units 35 to the anchor connection unit 16, and a reinforcement pipe 49 extending from the diagonal support units 36 to portion of the anchor connection unit 16 to which the side support units 45 are connected. The center table 10 further includes a plurality of first brackets 13 mounted on the outer circumferential surface of the table body 11 facing the corner of the anchor connection unit 16 in order to connect the table body 11 and the diagonal support portion 36, and a plurality of second brackets 14 mounted on the outer circumferential surface of the table body 11 between the adjacent first brackets 13 in a circumferential direction in order to connect the table body 11 and the side support unit 45. The first bracket 13 is formed with a pair of first coupling grooves 13a which are open in a direction of the frame portion 15 and extend in parallel in a vertical direction to accommodate one side of a diagonal support unit 35. It is preferable that the pair of first coupling grooves 13a are formed so that both sides in the vertical direction are open. The second bracket 14 is open in a direction of the frame portion 15 and extends in a vertical direction to form a second coupling groove 14a in which one side of a side support unit 45 is accommodated. The second coupling groove 14a is formed so that both sides in the vertical direction are open. The anchor connection unit 16 comprises a plurality of pairs of connection pipes 24 arranged in parallel or perpendicular to each other so as to form a rectangular shape; a plurality of corner connection members 17 for connecting the connection pipes 24 arranged in perpendicular to each other; a plurality of pairs of shackles 22 for first mooring rope, which are mounted at each corner connection member 17 and to which an end portion of the first mooring rope 111 of the first mooring unit 110 is connected; and side connection members 26 coupled to a longitudinal center side of the connection pipe 24 and to which the other side of the side support unit 45 is coupled. Before describing the anchor connecting unit 16 in detail, the diagonal support unit 35 and the side support unit 45 will be described. The diagonal support unit 35 includes a pair of first downward pipes 36 of which one sides are accommodated and coupled to the upper portions of the first coupling grooves 13a of the first bracket 13 to be disposed in parallel with each other and inclined downward as being radially away from the center rotating shaft 50, a pair of first upward pipes 37 of which one sides are accommodated and coupled to the lower portions of the first coupling grooves 13a of the first bracket 13 to be disposed in parallel with each other and inclined upward as being radially away from the center rotating shaft 50, and a first horizontal pipes 38 of which one sides are accommodated and coupled to the first coupling grooves 13a of the first bracket 13 between the first downward pipes 36 and the first upward pipes 37 to extend horizontally. In addition, the diagonal support unit 35 further includes a pair of vertical connection members 39 extending in a vertical direction to connect both side portions of the first downward pipe 36, the first upward pipe 37, and the first horizontal pipe 38, and a reinforcement connection member 41 connecting the first downward pipes 36 parallel to each other, connecting the first upward pipes 37 parallel to each other, or connecting the first horizontal pipes 38 parallel to each other. The diagonal support units 35 are symmetrical to each other in the direction of the diameter of the table body 11 with the table body 11 interposed therebetween, and are spaced apart from each other by a predetermined interval in a circumferential direction of the table body. The vertical connection member 39 has a separation structure in which one side and the other side are spaced apart from each other in the longitudinal direction of the diagonal support unit 35 to form a fourth coupling groove 39a in which one side of the reinforcement pipe 49 is accommodated and coupled. However, unlike the illustrated configuration, the vertical connection member 39 may be integrally formed with the fourth coupling groove 39a. The reinforcing connection member 41 has a pair of receiving grooves 42 in which side portions of the first downward pipes 36 parallel to each other are received in parallel, side portions of the first upward pipes 37 parallel to each other are received in parallel, or side portions of the first horizontal pipes 38 parallel to each other are received in parallel. In addition, the side support unit 45 includes a second downward pipe 46 having one side accommodated in and coupled to the upper portion of the second coupling groove 14a of the second bracket 14, extending radially from the outer circumferential surface of the table body 11, and inclined downward as being away from the center rotating shaft 50, a second upward pipe 47 inclined upward as being away from the center rotating shaft 50 and positioned below the second downward pipe 46, and a second horizontal pipe 48 positioned between the second downward pipe 46 and the second upward pipe 47. Meanwhile, the connecting pipe 24 of the anchor connecting unit 16 is formed in a rectangular tube shape. One pair of connection pipes 24 are vertically arranged and extend in parallel in the direction of length, and are parallel to or orthogonal to the other pair of connection pipes 24. The corner connection member 17 comprises a diagonal coupling portion 18 in which a pair of diagonal grooves 19 are formed, the pair of diagonal grooves being vertically accommodated and coupled to the other ends of a first downward pipe 36, a first horizontal pipe 38, and a first upward pipe 37 of the diagonal support unit 35, and a horizontal coupling portion 20 including a pair of horizontal ribs 21 protruding laterally from the outer circumferential surface of the diagonal coupling portion 18 facing outward with respect to the table body 11, the pair of horizontal ribs 21 being vertically spaced in parallel with each other. The pair of mooring rope shackles 22 are mounted to the horizontal rib 21 so as to be positioned on a longitudinal extension line of the pair of first horizontal pipes 38. The mooring rope shackle 22 is formed in a ring shape in which the pair of horizontal ribs 21 can enter one side, and is rotatably supported by a fastening bolt b passing through the pair of horizontal ribs 21. The side connection member 26 includes a connection pipe support portion 27, a side coupling portion 29, and a reinforcement pipe coupling portion 31. The connection pipe support portion 27 is opened upward or downward, and is opened to both sides in the horizontal direction, to form a pair of receiving grooves 28 in which the connection pipe 24 is seated and coupled. The side portion coupling portion 29 protrudes from a side portion of the connection pipe supporting portion 27 facing the second bracket 14 and extends vertically. The side coupling portion 29 is formed with a third coupling groove 29a opened in the direction of the second bracket 14 and the vertical direction. The reinforcing pipe coupling portion 31 includes a pair of vertical ribs 32 extending in the direction of the vertical connection member 39 of the diagonal support unit 35 and symmetrically facing each other with the side coupling portion 29 interposed therebetween. One end of the reinforcing pipe 49 is received and coupled to the fourth coupling groove 39a of the vertical connection member 39, and the other end thereof is bolt-coupled to one vertical rib 32. The center rotating shaft 50 is mounted to be relatively rotatable with respect to the table body 11, and is driven with respect to the table body 11 by the rotation driving unit 70. The rotation drive unit 70 may be a general slewing drive, and includes a circular inner race (not shown) mounted at the center of the table body 11, a first gear 72 rotatably bearing around the inner race and having teeth formed on an outer circumferential surface thereof, and a rotation drive motor 77 mounted on one side of the table body 11 so that a second gear 74 engaged with the first gear 72 is mounted on a drive shaft 78. A ring gear or a worm wheel may be applied to the first gear 72, and a worm gear or a general spur gear may be applied to the second gear 74. The center rotating shaft 50 includes a guide portion 51 coupled to the first gear 72 to be rotated together with the first gear 72, and an upper plate portion 52 coupled to the upper portion of the guide portion 51, having an outer diameter larger than that of the guide portion 51, and having a plurality of first shackles 54 mounted at regular intervals along the circumference thereof. Alternatively, the inner race may be coupled to the center rotation shaft 50, the first gear 72 may be fixed to the table body 11, and the rotation driving motor 71 may be fixed to the center rotating shaft 50. As shown in FIG. 2, one side of each of the plurality of rotation angle limiting ropes 65 may be fixed to an end of one diagonal support unit 35, and the other side thereof may be fixed to the guide part 51 of the center rotation shaft 50. Although not shown in detail, the photovoltaic power generation unit 80 includes a plurality of photovoltaic power generation modules 81, a module support frame 83 for supporting the plurality of photovoltaic power generation modules 81, and a plurality of buoyancy bodies 85 floating on water and supporting the module support frame 83. The buoyant body 90 for connecting power generation units is located around the center table 10 and is spaced apart from the center table 10 by a predetermined interval. The buoyant body 90 for connection power generation units is formed in a rectangular shape with the inside penetrating up and down, but may be formed in a polygonal shape or a ring shape. A plurality of second shackles 92 are mounted at an upper portion of the buoyant body 90 for connection power generation units along the circumferential direction thereof. The plurality of rotation driving ropes 60 are wound around the center rotating shaft 50 in the rotation direction of the center rotating shaft 50 to rotate the photovoltaic power generation units 80 in the circumferential direction together with the the buoyant body 90 for connection power generation units. Referring to FIGS. 3 and 4, the first mooring unit 110 includes a plurality of pairs of first anchors 113 positioned at a lower side of the center table 10, and a plurality of pairs of first mooring ropes 116. Each of the first mooring ropes 116 is connected to the different first anchor among the pair of the first anchors 113 and crossed each other to be connected to the center table 10. The pair of first anchors 113 are disposed at the side facing a side of the center table 10, and are spaced apart from each other in parallel with the side of the center table 10. It is preferable that the pair of first anchors 113 are spaced apart from each other larger than one side of the center table 10. The first mooring rope 116, which is connected to the pair of first anchors 113 and crossing each other, is connected to the corner connection member 17 coupled to both sides of the connection pipe of the center table 10 at the side facing the pair of first anchors 113. The second mooring unit 120 comprises a plurality of second anchors 123 positioned at the circumference of the photovoltaic power generating unit 80, a plurality of second mooring ropes 126 extending from the lower portion of the center table 10 to each of the second anchors 123, a plurality of auxiliary ropes 127 extending from the edge side of the photovoltaic power generating unit 80 to each of the second mooring ropes 126, and a plurality of pull adjustment winches 129 mounted on the photovoltaic power generating unit 80 so as to wind the auxiliary ropes 127 such that the second mooring ropes 126 are pulled toward a water surface side. In addition, the second mooring unit 120 further includes a plurality of anti-tangling weights 131, 133 spaced apart from each other and connected to the second mooring rope 126 with the auxiliary ropes 127 in between. The auxiliary rope 127 may be connected to the second mooring rope 126 by U-shaped bolts to be relatively movable with respect to the second mooring rope 126 between the first and second anti-tangling weights 131, 133. The first and second weight plates 131, 133 prevent the second mooring rope 126 from being tangled in the lower side of the photovoltaic power generation unit 80 or the first mooring unit 110 by allowing the second mooring rope 126 to be drooped to the lower side of the photovoltaic power generation unit 80 in a state of the second mooring rope 126 being not pulled by the auxiliary rope 127, thereby fixing the second mooring rope 126 without azimuthal angle distortion when the water level is changed. Although not shown, the rotary-type floating solar photovoltaic power plant 1 including floating table and rotating shaft according to the first embodiment of the present invention further includes a sensor unit including an anemometer mounted on one side of the photovoltaic power generation unit 80 or the center table 10 to sense the wind speed, a flow meter for sensing the flow speed of the tide, and a controller for driving the pull adjustment winch 129 so that the auxiliary rope 127 can be wound around the pull adjustment winch 129 when the sensing signal value transmitted from the sensor unit is a set value for the wind speed or the flow speed (for example, when the sensing signal value is faster than the wind speed 15m / s). In addition, the controller may control the pull adjustment winch 129 to release the winding of the auxiliary rope 127 when the detection signal value transmitted from the sensor unit is less than the set value. According to a rotary-type floating solar photovoltaic power plant 1 including floating table and rotating shaft according to a first embodiment of the present invention, one side of a plurality of rotating driving ropes is connected to the rotating shaft located at the center of the center table in the circumferential direction, and the other side of the rotating driving ropes is connected to the photovoltaic power generation units located around the center table, so that the rotation of the photovoltaic power generation units is facilitated by the rotation of the rotating shaft, and the photovoltaic power generation efficiency is improved. In the rotary-type floating solar photovoltaic power plant 1 including floating table and rotating shaft according to the first embodiment of the present invention, one side of the rotation angle limiting rope 65 is fixed to the center table and the other side thereof is fixed to the center rotating shaft to limit or release the rotation angle of the center rotating shaft so that the rotation range of the photovoltaic power generation units may be fixed depending on the photovoltaic orientation, thereby improving the rotation control efficiency of the photovoltaic power generation units and improving the photovoltaic power generation efficiency. The rotary-type floating solar photovoltaic power plant 1 including floating table and rotating shaft according to the first embodiment of the present invention is provided with the first mooring unit 110 for fixing the center table and the second mooring unit 120 including the second mooring rope extending from the outer side of the photovoltaic power generation units 80 to the center table, thereby having an advantage of stably mooring. In addition, in the rotary-type floating solar photovoltaic power plant 1 including the floating table and the rotating shaft according to the first embodiment of the present invention, when the wind speed is equal to or higher than a predetermined value, the auxiliary rope connected to the edge side of the photovoltaic power generation unit is wound to pull the second mooring rope, thereby restricting the distortion or movement of the azimuth and thus having an advantage of more stably mooring. FIG. 6 illustrates a rotary-type floating solar photovoltaic power plant 1 ‘ including floating table and rotating shaft according to a second embodiment of the present invention. Elements having the same functions as those of the first embodiment are denoted by the same reference numerals. A rotary-type floating solar photovoltaic power plant 1 ‘ including floating table and rotaing shaft according to the second embodiment of the present invention includes a center table 10, a center rotating shaft 50 having a first shackle 54 mounted thereon, a rotation driving unit 70, a first mooring unit 110, a plurality of photovoltaic power generation units 80 spaced apart from each other in a circumferential direction around the center table 10, formed in a circular shape, and provided with second shackles 92 at regular intervals along the circumference thereof, a plurality of rotation guide units 150 for power generation unit, a plurality of rotation driving ropes 160, and a second mooring unit 120. The photovoltaic power generation unit 80 is provided with photovoltaic power generation modules and the center side of the circular-shape photovoltaic power generation unit 80 is penetrated vertically. The rotation guide units 150 for power generation unit includes a rotation supporting table 151 positioned at each center of the photovoltaic power generation units 80, a rotating shaft 153 for power generation unit rotatably mounted at the center of the rotation supporting table 151, a plurality of third shackles 155 installed at an upper portion of the rotating shaft 153 for power generation unit in a circumferential direction, a buoyant body 90 for connecting power generation unit disposed at a circumference of the rotation supporting table 151, a plurality of rotation guide ropes 158 connected to the fourth shackles 157 mounted on the buoyant body 90 connected to the photovoltaic power generation units 80, and a third mooring unit (not shown) connected to the rotation supporting table 151. The rotation supporting table 151, the rotating shaft 153 for power generation unit, and the third shackle 155 have the same structure as the center table 10, the center rotating shaft 50, and the first shackle 54, respectively, and thus detailed descriptions thereof will be omitted. The buoyant body 90 for connecting power generations is positioned around the rotation supporting table 151 and is connected to the photovoltaic power generation unit 80 by universal joints. The third mooring unit has the same technical features as the first mooring unit and restricts rotation of the rotation supporting table 151. One end of the rotation driving rope 160 is connected to one of first shackles 54, the rotation driving rope 160 is connected to the second shackles 92 while extending along the circumference of one of the photovoltaic power generation units 80, and the other end of the rotation driving rope 160 is connected to another of first shackles 54, thereby one side and the other side of the rotation driving rope 160 cross each other. Accordingly, when the center rotating shaft 50 rotates, the photovoltaic power generation unit 80 is rotated in the direction opposite to the rotation direction of the center rotation shaft 50. One rotation driving rope 160 may be connected to only one photovoltaic power generation unit 80, or may extend in a figure-of-eight shape so as to rotate a pair of photovoltaic power generation units 80 symmetrically disposed with the center table 10 interposed therebetween. According to the above connection structures, the photovoltaic power generation unit may be rotated in a direction opposite to the rotation direction of the center rotation shaft 50. The second mooring unit 120 includes a plurality of second anchors 123, a plurality of second mooring ropes 126, a plurality of pull adjustment winches 119, and first and second anti-tangling weights 131 and 133. The plurality of second anchors 123 of the second mooring part 120 are disposed around the plurality of photovoltaic power generation units 80, and the plurality of second mooring ropes 126 extend to the second anchors 123 under the center table 10. At least one auxiliary rope 127 is connected to an edge side of one photovoltaic power generation unit 80 and extends to each second mooring rope 126. The pull adjustment winch 129 to which at least one second mooring rope 126 is connected, is installed in each photovoltaic power generation unit. Meanwhile, as shown in FIG. 7, a rotary-type floating solar photovoltaic power plant 1" including a floating table and a rotary shaft according to a third embodiment of the present invention may include a center table 10, a center rotating shaft 50 having a first shackle 54 mounted thereon, a rotating driving unit 70, a first mooring unit 110, one photovoltaic power generation unit 80 radially spaced apart from the center table 10, one rotation guide unit 150 for power generation unit, one rotation driving rope 160, and a second mooring unit 120. Unlike the illustration, the rotation driving rope 160 may be connected to different first shackles 54 spaced apart from each other in the circumferential direction so that one side and the other side of the rotation driving rope do not cross each other. Meanwhile, although not shown, a rotary-type floating solar photovoltaic power plant according to a fourth embodiment of the present invention has the same structures as those of the second embodiment of the present invention, except for a plurality of rotation guide units for power generation unit. The plurality of rotation guide units for power generation unit includes a rotating table positioned at the center of the photovoltaic power generation unit 80 and connected to the photovoltaic power generation unit by universal joints to be rotated together with the photovoltaic power generation unit, a rotation support shaft mounted at the center of the rotating table and restricted from rotating, and a third mooring unit restricting the rotation of the rotation support 5 shaft. The rotating table and the rotation support shaft have the same structures as the center table 10 and the center rotating shaft 50, respectively, and the rotating table has a larger width than the center table 10, and may be directly connected to the photovoltaic power generation unit 80 by the universal joints. 10        Although not shown, the third mooring unit may include a plurality of third anchors mounted under the photovoltaic power generation unit 80, and a plurality of third mooring ropes extending from the respective anchors and connected to a lower portion of the rotation support shaft such that adjacent a pair of the third mooring ropes could cross each other in "X" shapes. The present invention described above has been described with reference to an example 15 illustrated in the drawings, but this is merely an example, and it will be understood by those skilled in the art that various modifications and other equivalent embodiments are possible therefrom. Therefore, the scope of true technical protection of the present invention should be determined by the technical spirit of the appended claims.

Claims

1. A rotary-type floating solar photovoltaic power plant including floating table and rotating shaft, comprising:5 a center table floating on the water;a center rotating shaft rotatably installed at the center of the center table;a photovoltaic power generation unit floating on the water around the center table;a plurality of rotation driving ropes, each of which extending from a first shackle disposed in a circumferential direction on the upper portion of the center rotating shaft to a second shackle10 connected to the photovoltaic power generation unit, to rotate the photovoltaic power generation unit in the rotating direction of the center rotating shaft or the opposite direction; anda rotation driving unit including a rotation driving motor installed on the center table to rotate the center rotating shaft; and further comprising:a first mooring unit for restricting rotation of the center table, including a plurality of pairs of15 first anchors positioned at a lower side of the center table, and a plurality of pairs of first mooring ropes, wherein each of the first mooring ropes is connected to the different first anchor among the pair of the first anchors and crossed each other to be connected to the center table; anda second mooring unit comprising a plurality of second anchors positioned at the circumference of the photovoltaic power generating unit, a plurality of second mooring ropes20 extending from the lower portion of the center table to each of the second anchors, a plurality of auxiliary ropes extending from the edge side of the photovoltaic power generating unit to each of the second mooring ropes, and a plurality of pull adjustment winches mounted on the photovoltaic power generating unit so as to wind the auxiliary ropes such that the second mooring ropes are2024224003   16 Oct 2026pulled toward a water surface side.

2. The rotary-type floating solar photovoltaic power plant of the claim 1, wherein the second mooring unit further includes a plurality of anti-tangling weights connected to the second mooring 5 rope with the auxiliary ropes in between.

3. The rotary-type floating solar photovoltaic power plant of claim 1, further comprising a rotation angle limiting rope having one side fixed to an edge side of the center table and the other side fixed to the center rotating shaft, and being wound around the center rotating shaft to limit 10 rotation angle of the center rotating shaft and the photovoltaic power generation unit, wherein the rotation angle limiting rope is extended longer than the radius formed between the position where the limiting rope is connected to the center table and the center rotating shaft.

4. The rotary-type floating solar photovoltaic power plant of claim 1, further comprises a15 buoyant body for connecting power generation unit, which is spaced apart at predetermined intervals along the perimeter of the center table between the photovoltaic power generation unit and the center table,wherein the buoyant body has an outer side connected to the photovoltaic power generation unit by universal joint, and an inner side or upper portion on which the second shackle is mounted 20 so as to be rotatable together with the photovoltaic power generation unit with respect to the center table.

5. The rotary-type floating solar photovoltaic power plant of claim 1, further comprising a2024224003   16 Oct 2026rotating table which is positioned at the central side of each of the plurality of photovoltaic power generation units arranged around the center table and rotate together with the photovoltaic power generation units, and a rotation support shaft mounted at a central side of the rotating table,wherein the plurality of second shackles are installed along circumferences of each 5 photovoltaic power generation units, which are formed in a circular shape, andone end of the rotation driving rope is connected to one of the first shackles, the rotation driving rope is connected to the plurality of second shackles while extending along the circumference of the photovoltaic power generation unit, and the other end of the rotation driving rope is connected another first shackles, such that one side and the other side of the rotation driving 10 rope cross each other.

6. The rotary-type floating solar photovoltaic power plant of claim 1, wherein the center table comprises:a cylindrical table body, on the center of which the center rotating shaft is rotatably mounted;15 a plurality of diagonal support units symmetrically disposed with the table body interposed therebetween, each of the plurality of diagonal support units comprising a pair of first downward pipes disposed in parallel with each other on the upper portion of the table body and inclined downward as being radially away from the center rotating shaft, a pair of first upward pipes disposed in parallel with each other on the lower portion of the table body and inclined upward as20 being radially away from the center rotating shaft, and a pair of first horizontal pipes disposed between the first downward pipes and the first upward pipes;a plurality of side support units extending radially from an outer peripheral surface of the table body between the adjacent diagonal support units, each of the plurality of side support units2024224003   16 Oct 2026comprising a second downward pipe inclined downward as being far away from the center rotating shaft, a second upward pipe inclined upward as being far away from the center rotating shaft and disposed below the second downward pipe, and a second horizontal pipe disposed between the second downward pipe and the second upward pipe;5 a corner connection member mounted on an end portion of the diagonal support unit;a side connection member mounted on an end portion of the side support unit; anda connection pipe, the longitudinal center of which is coupled to one of the side connection members and the both sides of which are connected to the corner connection members disposed on either side of the side connection member.10

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