An offshore floating wind power and photovoltaic centralized mooring system and design method

Abstract

The present invention discloses an offshore floating wind power and photovoltaic centralized mooring system, comprising: a floating wind turbine, a floating wind turbine mooring system, a floating photovoltaic array, and a floating photovoltaic mooring system. The floating wind turbine mooring system includes a mooring cable with one end connected to the floating wind turbine, and the other end of the mooring cable is connected to an anchor point; the floating photovoltaic mooring system includes an upper mooring cable, a lower mooring cable, and a rigid rod. One end of the upper mooring cable is connected to the floating photovoltaic array, the other end of the upper mooring cable is connected to the rigid rod, one end of the lower mooring cable is connected to the rigid rod, and the other end of the lower mooring cable is connected to the anchor point. The present invention also discloses a design method for an offshore floating wind power and photovoltaic centralized mooring system. The present invention reduces the construction difficulty, improves the construction efficiency, enhances the side structure strength of the floating photovoltaic array, and increases the installed capacity of the floating offshore photovoltaic.

Description

Technical Field

[0001] The present invention relates to the field of offshore new energy, and particularly relates to an offshore floating wind power and photovoltaic centralized mooring system and a design method. Background Art

[0002] The ocean area is vast compared to land, and space utilization does not conflict with urban planning, agriculture, industry, and residents' lives. Moreover, the ocean environment has good wind resources and less sunlight obstruction, having great advantages in the development of wind energy and light energy. When using fixed foundations to develop and utilize wind energy and light energy under water depths of more than 50m in sea areas, it is necessary to resist large wind, wave, and current loads, resulting in high costs. Floating foundations reduce the cost impact of water depth on the development of wind and light, and are suitable for deep-sea areas.

[0003] The integrated development and utilization of offshore wind energy and light energy can effectively improve space utilization rate and reduce the construction cost of transmission routes. Patent 202111306302.8 proposes an offshore floating wind-solar integrated power generation system, which arranges photovoltaic modules on the deck of the floating foundation of a wind turbine and adds sliding devices to reduce the shadow impact caused by the wind turbine tower; Patent 202210809480.0 proposes a new type of offshore wind-solar integrated power generation device, which uses a telescopic rotary solar power generation module installed on the deck of the floating foundation to achieve automatic retraction and rotation of the solar panels to reduce wind loads. Both of these methods achieve wind-solar integration by installing photovoltaic modules on the deck of the floating foundation. Limited by the structural size of the floating foundation, the installed capacity of the photovoltaic modules is small, and large-scale offshore photovoltaic power stations cannot be built. At the same time, the shadow occlusion caused by the tower cannot be completely avoided.

[0004] Offshore floating wind farms and offshore floating photovoltaic farms mainly use mooring systems to restrict the offset and rotation of floating foundations under the action of wind, waves, and currents. Traditional floating photovoltaics have problems such as many mooring points, which are difficult and costly to construct in the marine environment. In the case of jointly building an offshore floating wind farm and an offshore floating photovoltaic farm, the high cost of the mooring system and the construction difficulties are the key problems to be solved. Summary of the Invention

[0005] In order to overcome the defects of the above background art, the present invention provides an offshore floating wind power and photovoltaic centralized mooring system and a design method, which reduce the construction difficulty, improve the construction efficiency, enhance the structural strength of the side of the floating photovoltaic array, and increase the installed capacity of the floating offshore photovoltaic.

[0006] The technical solutions adopted by the present invention to solve the above technical problems are as follows:

[0007] An offshore floating wind power and photovoltaic centralized mooring system, comprising: a floating wind turbine, a floating wind turbine mooring system, a floating photovoltaic array, and a floating photovoltaic mooring system. The floating wind turbine mooring system includes a mooring cable with one end connected to the floating wind turbine, and the other end of the mooring cable is connected to an anchor point; the floating photovoltaic mooring system includes an upper mooring cable, a lower mooring cable, and a rigid rod. One end of the upper mooring cable is connected to the floating photovoltaic array, the other end of the upper mooring cable is connected to the rigid rod, one end of the lower mooring cable is connected to the rigid rod, and the other end of the lower mooring cable is connected to the anchor point.

[0008] Preferably, the floating wind turbine mooring system of adjacent floating wind turbines and the floating photovoltaic mooring system of the floating photovoltaic array are connected to a common anchor point.

[0009] Preferably, the floating wind turbine has a square ring-shaped floating foundation form, and two parallel mooring cables are respectively connected to the four sides of the floating wind turbine, and each mooring cable is respectively connected to an anchor point.

[0010] Preferably, the floating photovoltaic array is arranged in a rectangle, connection points for one end of each upper mooring cable are evenly distributed on the four sides of the floating photovoltaic, the other ends of the upper mooring cables located on the same side of the floating photovoltaic are evenly connected to the same rigid rod, one ends of the lower mooring cables located on the same side of the floating photovoltaic are evenly connected to the rigid rod, and the other ends of the lower mooring cables located on the same side of the floating photovoltaic converge and are connected to the same anchor point.

[0011] Preferably, the number of lower mooring cables on the same side of the floating photovoltaic is less than the number of upper mooring cables on that side.

[0012] Preferably, the anchor point is a suction pile or a drag embedment anchor fixed on the seabed.

[0013] Preferably, the upper mooring cable is a steel anchor chain, or polypropylene, or polyester, or nylon, or ultra-high molecular weight polyethylene, or aramid, or a hybrid fiber.

[0014] Preferably, the rigid rod is a steel section.

[0015] The present invention also provides a design method for an offshore floating wind power and photovoltaic centralized mooring system, including:

[0016] Step 1: Calculate the shadow distance L generated by sunlight for the floating wind turbine according to the longitude and latitude of the installation location s , calculate the minimum distance L between the floating wind turbine and the floating photovoltaic array min1 ;

[0017] L c ≥L min1 ≥max{L s , L m}

[0018] Among them, L m is the required spacing for the operation and maintenance passage, and L c is the cable length;

[0019] Step 2: Define the mooring radius as the vertical projection length of the mooring cable on the horizontal plane. According to the environmental loads such as wind, wave, and current of the floating wind turbine, calculate the minimum mooring radius R max1 that meets the design requirements of the maximum displacement X min1 ;

[0020] X(R min1 ) = f(w a , c, w i , m, b w )

[0021] 0 ≤ X(R min1 ) ≤ X max1

[0022] Among them, f(w a , c, w i , m, b w ) is the relational expression for calculating the displacement of the floating wind turbine. w a is the wave parameter, c is the sea current parameter, w i is the wind parameter, m is the mooring parameter, and b w is the parameter of the floating wind turbine; X(R min1 ) is the maximum displacement of the floating wind turbine when the mooring radius is R min1 ;

[0023] Step 3: According to the layout form and environmental load of the floating photovoltaic array, calculate the minimum mooring radius R max2 that meets the design requirements of the maximum displacement X min2 ;

[0024] X(R min2 ) = f(w a , c, w i , m, b s )

[0025] 0 ≤ X(R min2 ) ≤ X max2

[0026] Among them, b s is the parameter of the floating photovoltaic; X(R min2 ) is the maximum displacement of the floating wind turbine when the mooring radius is R min2 ;

[0027] Step 4: Calculate the common anchor point positions of the floating wind turbine mooring system and the floating PV mooring system and arrange them symmetrically. The vertical projection distance from the anchor point position to the top of the mooring cable is equal to the mooring radius, and the following conditions need to be satisfied:

[0028] 0 ≤ L min1 ≤ R min1 + R min2

[0029] Combined with the formula in Step 1, the range of the minimum spacing L min1 is as follows:

[0030] max{L c , R min1 + R min2} ≥ L min1 ≥ max{L s , L m}

[0031] Step 5: Establish a numerical coupling model of the wind turbine - floating body - mooring to calculate the required uplift force F v1 and horizontal resistance force F h1 ;

[0032] F v1 , F h1 = f(w a , c, w i , m, b w )

[0033] Step 6: Establish a numerical coupling model of the PV array - mooring to calculate the required uplift force F v2 and horizontal resistance force F h2 ;

[0034] F v2 , F h2 = f(w a , c, w i , m, b w )

[0035] Step 7: The specifications of the common anchor points for the floating wind turbine and the floating PV need to meet the requirements of both the uplift force and the horizontal resistance force simultaneously. The formula is expressed as follows:

[0036] 2max{F v1 , F v2} ≥ F v0 ≥ max{F v1 , F v2}

[0037] 2max{F v1 , F v2} ≥ F h0 ≥ max{Fh1 , F h2}

[0038] Among them, F v0 and F h0 are the uplift force and horizontal resistance force of the common anchor point for the floating wind turbine and floating photovoltaic;

[0039] Step 8: Calculate the specifications of the non - common anchor points of the floating wind turbine mooring system. Its uplift force and horizontal resistance force only need to meet the design requirements of a single floating wind turbine. The formula is expressed as follows:

[0040] F m1 ≥F' v0 ≥F v1

[0041] F m1 ≥F' h0 ≥F h1

[0042] Among them, F m1 is the breaking tensile force of the wind turbine mooring cable

[0043] Step 9: Calculate the specifications of the non - common anchor points of the floating photovoltaic mooring system. Its uplift force and horizontal resistance force only need to meet the design requirements of a single floating photovoltaic array. The formula is expressed as follows:

[0044] F m2 ≥F” v0 ≥F v2

[0045] F m2 ≥F” h0 ≥F h2

[0046] Among them, F m2 is the breaking tensile force of the floating photovoltaic mooring cable.

[0047] The beneficial effects of the present invention are as follows: The present invention adopts the sharing of anchor points by adjacent floating wind turbines and floating photovoltaic mooring systems. The sharing of anchor points by adjacent floating photovoltaic mooring systems can greatly reduce the number of anchor points, lower the construction difficulty, and improve the construction efficiency. The upper mooring cables 41 are multiple mooring cables of equal length and are arranged in parallel, which can evenly distribute the mooring cable tension on the side of the floating photovoltaic array, avoiding the concentration of tension on a single mooring cable and enhancing the structural strength of the side of the floating photovoltaic array. The space between multiple floating wind turbines can be fully utilized. Compared with arranging photovoltaic modules on the floating body deck of a floating wind turbine, the installed capacity of floating offshore photovoltaics can be greatly improved. In the system of the present invention, the mooring cables of the offshore floating photovoltaic square array are evenly distributed around the square array. The mooring cables of the same side and of equal length are connected to one or more rigid rods, and the rigid rods are connected to the anchor points through mooring cables. Adjacent floating photovoltaic arrays share the anchor points between them, and adjacent floating photovoltaics and floating wind turbines share the anchor points between them. The mooring cables of equal length connecting the rigid rods can evenly distribute the environmental loads on the side structure of the floating photovoltaics, avoiding excessive stress on a single mooring cable and causing structural damage. The sharing of anchor points can effectively reduce the number of anchor piles, improve the construction efficiency, and reduce the construction difficulty. The present invention adopts the sharing of anchor points by adjacent floating wind turbines and floating photovoltaic mooring systems. The sharing of anchor points by adjacent floating photovoltaic mooring systems can greatly reduce the number of anchor points, lower the construction difficulty, and improve the construction efficiency. The upper mooring cables of the floating photovoltaic mooring system of the present invention are multiple mooring cables of equal length and are arranged in parallel, which can evenly distribute the mooring cable tension on the side of the floating photovoltaic array, avoiding the concentration of tension on a single mooring cable and enhancing the structural strength of the side of the floating photovoltaic array. The present invention can fully utilize the space between multiple floating wind turbines. Compared with arranging photovoltaic modules on the floating body deck of a floating wind turbine, the installed capacity of floating offshore photovoltaics can be greatly improved. Description of the Drawings

[0048] Figure 1 It is a schematic diagram of the centralized mooring of a floating wind turbine and a floating photovoltaic in an embodiment of the present invention.

[0049] Figure 2 It is a diagram of the floating photovoltaic mooring system in an embodiment of the present invention.

[0050] Figure 3 It is a schematic diagram of the centralized mooring arrangement of a floating wind turbine and a floating photovoltaic power plant in an embodiment of the present invention.

[0051] Figure 4 It is a flow chart of the design method of the centralized mooring system for offshore floating wind power and photovoltaics in an embodiment of the present invention.

[0052] In the figure: 1 - floating wind turbine, 2 - floating wind turbine mooring system, 3 - floating photovoltaic array, 4 - floating photovoltaic mooring system, 41 - upper mooring cable, 42 - rigid rod, 43 - lower mooring cable, 44 - anchor point. Detailed implementation manners

[0053] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0054] Embodiment 1

[0055] An offshore floating wind power and photovoltaic centralized mooring system includes: a floating wind turbine 1, a floating wind turbine mooring system 2, a floating photovoltaic array 3, and a floating photovoltaic mooring system 4. The floating wind turbine mooring system 2 includes a mooring cable with one end connected to the floating wind turbine 1, and the other end of the mooring cable is connected to an anchor point 44; the floating photovoltaic mooring system 4 includes an upper mooring cable 41, a lower mooring cable 43, and a rigid rod 42. One end of the upper mooring cable 41 is connected to the floating photovoltaic array 3, the other end of the upper mooring cable 41 is connected to the rigid rod 42, one end of the lower mooring cable 43 is connected to the rigid rod 42, and the other end of the lower mooring cable 43 is connected to the anchor point 44.

[0056] The floating wind turbine mooring system 2 of adjacent floating wind turbines 1 and the floating photovoltaic mooring system 4 of the floating photovoltaic array 3 are connected to a common anchor point 44. The floating wind turbine 1 is in the form of a square annular floating foundation. Two parallel mooring cables are respectively connected to the four sides of the floating wind turbine 1, and each mooring cable is respectively connected to an anchor point 44.

[0057] The floating photovoltaic array 3 is arranged in a rectangle. Connection points for one end of each upper mooring cable 41 are evenly distributed on the four sides of the floating photovoltaic. The other ends of the upper mooring cables 41 on the same side of the floating photovoltaic are evenly connected to the same rigid rod 42. One ends of the lower mooring cables 43 on the same side of the floating photovoltaic are evenly connected to the rigid rod 42, and the other ends of the lower mooring cables 43 on the same side of the floating photovoltaic converge and are connected to the same anchor point 44. The number of the lower mooring cables 43 on the same side of the floating photovoltaic is less than the number of the upper mooring cables 41 on this side. The upper mooring cable 41 is a steel anchor chain or polypropylene or polyester or nylon or ultra-high molecular weight polyethylene or aramid or mixed fiber.

[0058] The anchor point 44 is a suction pile or a drag embedment anchor fixed on the seabed. The floating wind turbine mooring system 2 and the adjacent floating photovoltaic mooring system 4 share a common anchor point 44; the floating photovoltaic mooring system 4 shares a common anchor point 44 in the middle of two adjacent arrays. The rigid rod 42 can be made of section steel.

[0059] Embodiment 2

[0060] A design method for an offshore floating wind power and photovoltaic centralized mooring system includes:

[0061] Step 1: Calculate the shadow distance L generated by sunlight for the floating wind turbine 1 according to the longitude and latitude of the installation location s, calculate the minimum distance L between the floating wind turbine 1 and the floating photovoltaic array 3 min1 ;

[0062] L c ≥L min1 ≥max{L s , L m}

[0063] Among them, L m is the distance required for the operation and maintenance passage, and L c is the cable length;

[0064] Step 2: Define the mooring radius as the vertical projection length of the mooring cable on the horizontal plane. According to the environmental loads such as wind, wave, and current of the floating wind turbine 1, calculate the minimum mooring radius R that meets the maximum displacement X max1 of the floating wind turbine 1 design requirements min1 ;

[0065] X(R min1 ) = f(w a , c, w i , m, b w )

[0066] 0 ≤ X(R min1 ) ≤ X max1

[0067] Among them, f(w a , c, w i , m, b w ) is the relational expression for calculating the displacement of the floating wind turbine 1. w a is the wave parameter, c is the sea current parameter, w i is the wind parameter, m is the mooring parameter, and b w is the parameter of the floating wind turbine 1; X(R min1 ) is the maximum displacement of the floating wind turbine 1 when the mooring radius is R min1 ;

[0068] Step 3: According to the layout form and environmental load of the floating photovoltaic array 3, calculate the minimum mooring radius R that meets the maximum displacement X max2 of the floating photovoltaic array 3 design requirements min2 ;

[0069] X(R min2 ) = f(w a , c, w i , m, b s )

[0070] 0 ≤ X(R min2 ) ≤ X max2

[0071] Among them, bs For floating PV parameters; X(R min2 ) is the maximum displacement of the floating wind turbine 1 at a mooring radius of R min2

[0072] Step 4: Calculate the position of the common anchor point 44 of the mooring system 2 of the floating wind turbine and the mooring system 4 of the floating PV and arrange it symmetrically. The vertical projection distance from the position of the anchor point 44 to the top of the mooring cable is equal to the mooring radius, and it needs to satisfy:

[0073] 0 ≤ L min1 ≤ R min1 + R min2

[0074] Combined with the formula in Step 1, the range of the minimum spacing L min1 is as follows:

[0075] max{L c , R min1 + R min2}} ≥ L min1 ≥ max{L s , L m}

[0076] Step 5: Establish a numerical coupling model of the wind turbine - floating body - mooring to calculate the required uplift force F v1 and horizontal resistance force F h1 ;

[0077] F v1 , F h1 = f(w a , c, w i , m, b w )

[0078] Step 6: Establish a numerical coupling model of the PV array - mooring to calculate the required uplift force F v2 and horizontal resistance force F h2 ;

[0079] F v2 , F h2 = f(w a , c, w i , m, b w )

[0080] Step 7: The specifications of the common anchor point 44 shared by the floating wind turbine 1 and the floating PV need to meet the requirements of the uplift force and horizontal resistance force of both at the same time. The formula is expressed as follows:

[0081] 2max{F v1 , F v2}} ≥ F v0 ≥ max{F​v1 , F v2}

[0082] 2max{F v1 , F v2} ≥ F h0 ≥ max{F h1 , F h2}

[0083] where F v0 and F h0 are the uplift resistance and horizontal resistance of the common anchor point 44 for the floating wind turbine 1 and the floating PV;

[0084] Step 8: Calculate the specifications of the non - common anchor points 44 of the mooring system 2 of the floating wind turbine. Its uplift resistance and horizontal resistance only need to meet the design requirements of a single floating wind turbine 1. The formula is expressed as follows:

[0085] F m1 ≥ F' v0 ≥ F v1

[0086] F m1 ≥ F' h0 ≥ F h1

[0087] where, F m1 is the breaking tensile force of the mooring cable of the wind turbine.

[0088] Step 9: Calculate the specifications of the non - common anchor points 44 of the mooring system 4 of the floating PV. Its uplift resistance and horizontal resistance only need to meet the design requirements of a single floating PV array 3. The formula is expressed as follows:

[0089] F m2 ≥ F” v0 ≥ F v2

[0090] F m2 ≥ F” h0 ≥ F h2

[0091] where, F m2 is the breaking tensile force of the mooring cable of the floating PV.

[0092] Step 10: Select the material and specifications of the upper mooring cable 41 and the lower mooring cable 43 according to parameters such as the breaking tensile force, fatigue life, and corrosion resistance;

[0093] Step 11: Select the material and specifications of the rigid rod 42 according to parameters such as the buckling stress, fatigue life, and corrosion resistance.

[0094] It should be understood that those of ordinary skill in the art can make improvements or modifications based on the above description, and all such improvements and modifications shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A floating offshore wind and photovoltaic centralized mooring system, characterized in that, Including: A floating wind turbine (1), a floating wind turbine mooring system (2), a floating photovoltaic array (3), and a floating photovoltaic mooring system (4). The floating wind turbine mooring system (2) includes a mooring cable with one end connected to the floating wind turbine (1), and the other end of the mooring cable is connected to an anchor point (44); the floating photovoltaic mooring system (4) includes an upper mooring cable (41), a lower mooring cable (43), and a rigid rod (42). One end of the upper mooring cable (41) is connected to the floating photovoltaic array (3), the other end of the upper mooring cable (41) is connected to the rigid rod (42), one end of the lower mooring cable (43) is connected to the rigid rod (42), and the other end of the lower mooring cable (43) is connected to the anchor point (44); the floating wind turbine mooring system (2) of adjacent floating wind turbines (1) and the floating photovoltaic mooring system (4) of the floating photovoltaic array (3) are connected to a common anchor point (44); the floating photovoltaic array (3) is arranged in a rectangle, connection points connected to one end of each upper mooring cable (41) are evenly distributed on four sides of the floating photovoltaic array (3), the other ends of the upper mooring cables (41) located on the same side of the floating photovoltaic array (3) are evenly connected to the same rigid rod (42), one ends of the lower mooring cables (43) located on the same side of the floating photovoltaic array (3) are evenly connected to the rigid rod (42), and the other ends of the lower mooring cables (43) located on the same side of the floating photovoltaic array (3) converge and are connected to the same anchor point (44).

2. The floating offshore wind power and photovoltaic centralized mooring system according to claim 1, wherein: The floating wind turbine (1) is in the form of a square-ring floating foundation. Two parallel mooring cables are respectively connected to four sides of the floating wind turbine (1), and each mooring cable is respectively connected to an anchor point (44).

3. The floating offshore wind power and photovoltaic centralized mooring system according to claim 1, characterized in that: The number of the lower mooring cables (43) located on the same side of the floating photovoltaic array (3) is less than the number of the upper mooring cables (41) on this side.

4. A floating offshore wind power and photovoltaic centralized mooring system according to claim 1, characterized in that: The anchor point (44) is a suction pile or a drag embedment anchor fixed on the seabed.

5. A floating offshore wind and photovoltaic centralized mooring system according to claim 1, characterized in that: The upper mooring cable (41) is a steel anchor chain, or polypropylene, or polyester, or nylon, or ultra-high molecular weight polyethylene, or aramid, or a hybrid fiber.

6. A design method for an offshore floating wind power and photovoltaic centralized mooring system using the system according to any one of claims 1-5, characterized in that, Including: Step 1, calculate the shadow distance L generated by sunlight for the floating wind turbine (1) according to the longitude and latitude of the installation location s , calculate the minimum distance L between the floating wind turbine (1) and the floating photovoltaic array (3) min1 ; L c ≥L min1 ≥max{L s ,L m} Among them, L m is the spacing required for the operation and maintenance passage, and L c is the cable length; Step 2: Define the mooring radius as the vertical projection length of the mooring cable in the horizontal plane, and calculate the minimum mooring radius R that meets the design requirements according to the wind, wave, and current of the floating wind turbine (1) to satisfy the maximum displacement X of the floating wind turbine (1). max1 The minimum mooring radius R min1 ; X(R min1 ) = f(w a , c, w i , m, b w ) 0 ≤ X(R min1 ) ≤ X max1 Among them, f(w a , c, w i , m, b w ) is the relationship for calculating the displacement of the floating wind turbine (1), w a is the wave parameter, c is the ocean current parameter, w i is the wind parameter, m is the mooring parameter, b w is the parameter of the floating wind turbine (1); X(R min1 ) is the maximum displacement of the floating wind turbine (1) with a mooring radius of R min1 ​ Step 3: Calculate the minimum mooring radius R that meets the design requirements according to the layout form and environmental loads of the floating photovoltaic array (3) and the maximum displacement X of the floating photovoltaic array (3). max2 min2 ;​ X(R min2 ) = f(w a , c, w i , m, b s ) 0 ≤ X(R min2 ) ≤ X max2 where b s is the floating PV parameter; X(R min2 ) is the maximum displacement of the floating wind turbine (1) at a mooring radius of R min2 ​ Step 4: Calculate the position of the common anchor point (44) of the floating wind turbine mooring system (2) and the floating photovoltaic mooring system (4) and arrange them symmetrically. The vertical projection distance from the position of the anchor point (44) to the top of the mooring cable is equal to the mooring radius, and it is necessary to satisfy: 0 ≤ L min1 ≤ R min1 + R min2 Combined with the formula in Step 1, the minimum spacing L min1 The range is as follows: max{L c ,R min1 +R min2}≥L min1 ≥max{L s ,L m} Step 5: Establish a numerical coupling model of the wind turbine - floating body - mooring system to calculate the required uplift force F v1 and horizontal force F h1 ; F v1 , F h1 = f(w a , c, w i , m, b w ) Step 6, establish a numerical coupling model of the photovoltaic array - mooring system to calculate the required uplift force F of the anchor point (44) of the floating photovoltaic mooring system (4) v2 and the horizontal resistance force F h2 ; F v2 , F h2 = f(w a , c, w i , m, b w ) Step 7: The specifications of the common anchor point (44) shared by the floating wind turbine (1) and the floating photovoltaic need to simultaneously meet the requirements of the uplift force and the horizontal force of both, and the formula is expressed as follows: 2max{F v1 ,F v2}≥F v0 ≥max{F v1 ,F v2} 2max{F v1 ,F v2}≥F h0 ≥max{F h1 ,F h2} Among which F v0 and F h0 are the uplift force and the horizontal force resistance of the common anchor point (44) shared by the floating wind turbine (1) and the floating photovoltaic system; Step 8: Calculate the specifications of the non-common anchor point (44) of the floating wind turbine mooring system (2), and its uplift force and horizontal force only need to meet the design requirements of a single floating wind turbine (1), and the formula is expressed as follows: F m1 ≥ F' v0 ≥ F v1 F m1 ≥ F' h0 ≥ F h1 Among them, F m1 is the breaking tensile force of the fan mooring cable Step 9: Calculate the specifications of the non-common anchor point (44) of the floating photovoltaic mooring system (4), and its uplift force and horizontal force only need to meet the design requirements of a single floating photovoltaic array (3), and the formula is expressed as follows: F m2 ≥ F” v0 ≥ F v2 F m2 ≥ F” h0 ≥ F h2 Among them, F m2 is the breaking tensile force of the floating PV mooring cable.

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