Telescopic barge type wind and wave combined power generation platform

Abstract

The telescopic barge type wind and wave combined power generation platform comprises a barge type wind turbine platform, a wind generating set, a wave energy power generation system, an energy storage device, a central regulation and control device and a wave monitoring device. Each wave energy power generation system comprises a wave energy power generation device, an electric sliding rail device and a hydraulic connecting device, the wave energy power generation systems are installed on the four side faces of the barge type wind turbine platform, and the four wave energy power generation systems are distributed around the barge type wind turbine platform in a central symmetry mode. Compared with the prior art, the barge type wind power generation platform has the advantages that the barge type wind power generation platform and the wave energy power generation system are integrated, the wave energy power generation system is provided with the telescopic device capable of being automatically adjusted, and the extending length of the wave energy floater can be changed so as to adapt to the changing wave environment.

Description

Technical Field

[0001] The invention relates to the technical field of power generation platforms, in particular to a retractable barge-type wind-wave combined power generation platform. Background Art

[0002] At present, most of my country's offshore wind energy development is for single wind turbine power generation, and it is mainly distributed in offshore waters. This has also led to a certain degree of contradiction between the offshore wind energy development industry and aquaculture and fisheries for a long time; and the offshore space is limited, and the wind energy density is far less than that in deep sea areas, so it is imperative to develop new floating wind power platforms. In addition, the marine environment is complex and diverse, and the wave period, wave height and other parameters will change continuously. Only when the overall diameter of the platform is slightly smaller than the wave wavelength can the floating platform's efficiency be maximized. However, the existing floating wind power platforms on the market are almost all fixed in size and cannot be adjusted according to the changes in waves. When the wave environment changes and the wave wavelength is smaller than the platform diameter, the wave will diffract, which will not only change the wave height distribution near the platform, but also cause the wave height in the local area to increase or decrease, affecting the stability and safety of the platform. Further, when the platform diameter is larger than the wave wavelength, the platform is more susceptible to the impact of waves, and its movement amplitude may increase. Especially in the directions of roll, pitch and heave, the movement of the platform may be more obvious, and may also cause fatigue damage to the structure of the platform, reducing the service life of the platform. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a retractable barge-type wind-wave combined power generation platform, which integrates a barge-type wind power generation platform and a wave energy power generation system. The wave energy power generation system is equipped with an automatically adjustable retractable device, which can change the extension length of the wave energy float to adapt to the changing wave environment and ensure that the platform works under better working conditions. At the same time, it can also effectively improve the power generation efficiency of the wave energy device and improve the stability of the platform.

[0004] In order to solve the above problems, the technical solution of the present invention is: a retractable barge-type wind-wave combined power generation platform, including a barge-type wind turbine platform, a wind turbine generator set, a wave energy power generation system, an energy storage device, a central control device and a wave monitoring device;

[0005] The wave energy power generation system comprises a wave energy power generation device, an electric slide rail device and a hydraulic connection device, wherein the electric slide rail device is composed of an electric motor and a slide rail, and the hydraulic connection device is composed of a hydraulic system and a hydraulic arm. The wind turbine generator set is installed at the center of the upper end of the barge-type wind turbine platform, and the energy storage device is installed inside the lower end of the tower of the wind turbine generator set. A central control device is installed at the center of the barge-type wind turbine platform, and wave monitoring devices are installed on the four sides of the upper surface of the barge-type wind turbine platform, wherein the four wave monitoring devices are arranged in a centrally symmetrical manner. The wave energy power generation system is installed on the four sides of the barge-type wind turbine platform, and the four wave energy power generation systems are distributed in a centrally symmetrical manner around the barge-type wind turbine platform.

[0006] The wave energy power generation device is installed on the side of the barge-type wind turbine platform through the joint action of a hydraulic connection device and an electric slide rail device. The motor is installed inside the barge-type wind turbine platform. One end of the slide rail is connected to the motor, and the other end extends to the outside of the platform to be connected to the wave energy power generation device. The hydraulic system of the hydraulic connection device is arranged inside the barge-type wind turbine platform and is located obliquely above the motor and close to the outside of the platform. One end of the hydraulic arm is connected to the hydraulic system, and the other end is connected to a connecting rod. The other end of the connecting rod is connected to the slide rail, and the connection point, the second connection point and the third connection point are all hinged.

[0007] Furthermore, the energy storage device adopts a supercapacitor, which can provide the wind turbine with the instantaneous high power required for starting, help overcome the resistance when the wind turbine starts, and quickly reach the starting speed. In addition, the supercapacitor can provide higher power output with a smaller volume and weight, and is suitable for installation and use in the limited space inside the tower of the wind turbine.

[0008] Furthermore, the wave energy monitoring device adopts a radar wave meter, which measures the wave height by emitting electromagnetic waves to the sea surface and receiving echo signals reflected from the wave surface. The radar beam scans the sea surface, and the height and position of the wave can be calculated based on the intensity and time delay of the echo signal. After data analysis, the time series data of the wave height is extracted, and then the extracted time series data of the wave height is transmitted to the central control device.

[0009] Furthermore, the motor adopts a large DC motor to provide a larger torque to meet the power requirements of the slide rail to carry heavier objects. The slide rail adopts a linear slide rail, and the motor drives the slide rail through a gear set to achieve the telescopic function.

[0010] Furthermore, the hydraulic system of the hydraulic connection device adopts a hydraulic motor drive system, which drives the hydraulic arm to rotate by outputting torque to adjust the support angle of the hydraulic arm.

[0011] Furthermore, the central control device uses an industrial computer, which can analyze and process the collected time series data of wave heights and transmit the control information to the hydraulic connection device and the electric slide rail device.

[0012] Furthermore, the hydraulic connection device and the electric slide rail device are both installed above the waterline of the combined power generation platform. The wave energy power generation device adjusts the support angle of the hydraulic arm through the hydraulic system and the motor controls the telescopic length of the slide rail to achieve the change of the extension distance of the float of the wave energy device.

[0013] Furthermore, the four wave monitoring devices located above the barge-type wind turbine platform can identify and detect environmental waves and transmit wave information to the central control device. After processing and analyzing the wave information, the central control device will calculate the optimal extension distance of the wave energy float, and then transmit the adjustment information to the hydraulic connection device and the electric slide rail device to adjust the extension distance of the wave energy device float, so that the stability, power generation efficiency and service life of the platform are improved to a certain extent.

[0014] Furthermore, the energy storage device is installed inside the tower of the wind turbine generator set, and the electric energy generated by the wave energy power generation system is used to charge the energy storage device. When the electric energy in the energy storage device is full, the electric energy of the wave energy power generation system will be transmitted to the shore. The electric energy in the energy storage device mainly provides a certain auxiliary power supply for the start-up of the wind turbine to help the wind turbine start-up, which can increase the working time of the wind turbine to a certain extent, increase the overall power generation of the system, and is also used to power the electric slide device and hydraulic connection device of the wave energy power generation system.

[0015] The advantages of the present invention compared with the prior art are:

[0016] (1) Compared with the traditional single wind power generation platform, the floating wind-wave combined power generation platform of the present invention comprehensively utilizes ocean energy and can simultaneously utilize wind energy and wave energy for power generation. In addition, the floating design enables the platform to be used in deep sea areas, where there are more abundant wind and wave energy, which can greatly improve energy utilization and power generation;

[0017] (2) The extension distance of the float of the wave energy power generation device of the present invention can be automatically changed, so that the double radius of the platform as a whole is slightly smaller than the wavelength of the wave, which enables the platform to better interact with the wave, thereby better absorbing and utilizing the wave energy, improving the power generation of the wave energy power generation device and improving the stability of the platform to a certain extent; the telescopic device of the present invention can also effectively reduce the diffraction and reflection of the wave, making the wave propagation around the platform more stable, thereby reducing the mutual interference of the waves between the platforms and improving the stability and reliability of the entire wind farm;

[0018] (3) The retractable design of the present invention can effectively prevent the platform from resonating under specific wave conditions, prevent the platform from moving too much, and avoid damage to the platform structure. The platform is designed with a power storage device, which can provide auxiliary energy for starting the wind turbine when the environmental wind level is insufficient, which helps to increase the working time of the wind turbine and increase the power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The invention is a three-dimensional retractable barge-type wind-wave combined power generation platform. Figure 1 .

[0020] Figure 2 The invention is a three-dimensional retractable barge-type wind-wave combined power generation platform. Figure 2 .

[0021] Figure 3 It is a partial schematic diagram of a retractable barge-type wind-wave combined power generation platform of the present invention.

[0022] Figure 4 The present invention discloses a working flow chart of a telescopic device of a telescopic barge-type wind-wave combined power generation platform.

[0023] As shown in the figure: 1. Barge-type wind turbine platform; 2. Wind turbine generator set; 3. Energy storage device; 4. Wave monitoring device; 5. Central control device; 6. Wave energy power generation device float; 7. Slide rail; 8. Hydraulic system; 9. Hydraulic arm; 10. Electric motor; 11. Connection; 12. Connection two; 13. Connection three. DETAILED DESCRIPTION

[0024] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings, wherein the same components are represented by the same reference numerals.

[0025] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0026] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] like Figures 1 to 4 As shown, a retractable barge-type wind-wave combined power generation platform includes a barge-type wind turbine platform 1, a wind turbine generator set 2, a wave energy power generation system, an energy storage device 3, a central control device 5 and a wave monitoring device 4;

[0028] The wave energy power generation system comprises a wave energy power generation device, an electric slide rail device and a hydraulic connection device, wherein the electric slide rail device is composed of an electric motor 10 and a slide rail 7, and the hydraulic connection device is composed of a hydraulic system 8 and a hydraulic arm 9. The wind turbine generator set 2 is installed at the center of the upper end of the barge-type wind turbine platform 1, and the energy storage device 3 is installed inside the lower end of the tower of the wind turbine generator set 2. A central control device 5 is installed at the center of the barge-type wind turbine platform 1, and wave monitoring devices 4 are installed on the four sides of the upper surface of the barge-type wind turbine platform 1, wherein the four wave monitoring devices are arranged in a centrally symmetrical manner. The wave energy power generation system is installed on the four sides of the barge-type wind turbine platform 1, and the four wave energy power generation systems are distributed in a centrally symmetrical manner around the barge-type wind turbine platform 1;

[0029] The wave energy power generation device is installed on the side of the barge-type wind turbine platform 1 through the joint action of a hydraulic connection device and an electric slide rail device. The motor 10 is installed inside the barge-type wind turbine platform 1. One end of the slide rail 7 is connected to the motor 10, and the other end extends to the outside of the platform to connect with the wave energy power generation device. The hydraulic system 8 of the hydraulic connection device is arranged inside the barge-type wind turbine platform 1 and is located obliquely above the motor 10 and close to the outside of the platform. One end of the hydraulic arm 9 is connected to the hydraulic system 8, and the other end is connected with a connecting rod. The other end of the connecting rod is connected to the slide rail 7, and the connection 11, the second connection 12 and the third connection 13 are all hinged.

[0030] The energy storage device 3 uses a supercapacitor, which can provide the wind turbine with the instantaneous high power required for starting, help overcome the resistance when the wind turbine starts, and quickly reach the starting speed. In addition, the supercapacitor can provide higher power output with a smaller volume and weight, and is suitable for installation and use in the limited space inside the tower of the wind turbine.

[0031] The wave energy monitoring device 4 adopts a radar wave meter, which measures the wave height by emitting electromagnetic waves to the sea surface and receiving echo signals reflected from the wave surface. The radar beam scans the sea surface, and the height and position of the wave can be calculated according to the intensity and time delay of the echo signal. After data analysis, the time series data of the wave height is extracted, and then the extracted time series data of the wave height is transmitted to the central control device 5.

[0032] The motor 10 is a large DC motor to provide a large torque to meet the power requirements of the slide rail for carrying heavy objects. The slide rail 7 is a linear slide rail. The motor 10 drives the slide rail through a gear set to achieve the telescopic function.

[0033] The hydraulic system 8 of the hydraulic connecting device adopts a hydraulic motor drive system, which drives the hydraulic arm 9 to rotate by outputting torque to adjust the support angle of the hydraulic arm 9. The central control device 5 uses an industrial computer, which can analyze and process the collected time series data of wave height and transmit the control information to the hydraulic connecting device and the electric slide rail device.

[0034] The hydraulic connection device and the electric slide rail device are both installed above the waterline of the combined power generation platform. The wave energy power generation device adjusts the support angle of the hydraulic arm 9 through the hydraulic system 8 and the motor 10 controls the telescopic length of the slide rail 7 to achieve the change of the extension distance of the wave energy device float.

[0035] The four wave monitoring devices 4 located above the barge-type wind turbine platform 1 can identify and detect environmental waves and transmit wave information to the central control device 5. After processing and analyzing the wave information, the central control device 5 will calculate the optimal extension distance of the wave energy float, and then transmit the adjustment information to the hydraulic connection device and the electric slide rail device to adjust the extension distance of the wave energy device float, so that the stability, power generation efficiency and service life of the platform are improved to a certain extent.

[0036] The energy storage device 3 is installed inside the tower of the wind turbine generator set 2. The electric energy generated by the wave energy power generation system is used to charge the energy storage device 3. When the electric energy in the energy storage device 30 is full, the electric energy of the wave energy power generation system will be transmitted to the shore. The electric energy in the energy storage device 3 mainly provides a certain auxiliary power supply for the start-up of the wind turbine to help the wind turbine start, which can increase the working time of the wind turbine to a certain extent, increase the overall power generation of the system, and is also used to power the electric slide device and hydraulic connection device of the wave energy power generation system.

[0037] In specific use, when the combined power generation platform works in a natural marine environment, the wind turbine 2 will use wind energy to generate electricity under the action of environmental wind force, and the generated electricity will be transmitted to the shore through a submarine cable; at the same time, the wave energy power generation system will use wave energy to generate electricity, and use the generated electricity to charge the energy storage device 3 first. When the energy storage device 3 is fully charged, the electricity generated by the wave energy power generation system will be transmitted to the shore.

[0038] When the ambient wind level is low, the wind turbine generator set 2 cannot be started only by the ambient wind force. At this time, the energy storage device 5 will provide auxiliary energy to the wind turbine generator set 2 to help the wind turbine start, which can effectively increase the working time of the wind turbine, thereby achieving the purpose of increasing power generation.

[0039] Figure 3As shown, the distance from the center of the barge-type wind turbine base to the base edge is L1; the distance from the center of the wave energy power generation device float 6 to the barge-type wind turbine base edge is L2; ​​the maximum extension length of the electric slide device is L3, so the variation range of the overall size radius of the platform is:

[0040] (L1+L2) to (L1+L2+L3).

[0041] Combination Figure 1 System overall structure diagram and Figure 4 The system expansion and contraction device working process diagram, the wave energy detection device 4 will detect and analyze the environmental waves every thirty minutes, and the detection process is as follows:

[0042] 1) The wave energy detection device 4 will collect wave height time series data within a period of time;

[0043] 2) Perform fast Fourier transform (FTT) on the wave height data;

[0044] 3) Analyze the energy distribution in the frequency domain and determine the main frequency components;

[0045] 4) Calculate the wave period according to the main frequency, period T = 1 / f, f is the wave frequency;

[0046] 5) Calculate the wavelength of the wave using the formula, where ɡ is the acceleration due to gravity and h is the water depth;

[0047] The detected and calculated wave wavelength is then transmitted to the central control device 5. The central control device analyzes the optimal extension length ΔL of the telescopic rod of the wave energy power generation device according to the wave wavelength, and transmits the control information to the hydraulic system 8 and the motor 10. The hydraulic system 8 changes the support angle of the hydraulic arm 9 while the motor 10 drives the slide rail 7 to extend. The hydraulic connection device and the electric slide rail device cooperate to adjust to achieve the extension and retraction of the float 6 of the wave energy power generation device, thereby achieving the purpose of changing the overall radius of the platform. Through adjustment, the relationship between the wave wavelength and the platform size satisfies:

[0048] λ>2(L1+L2+ΔL),

[0049] Thereby, the platform obtains better motion characteristics, improves the stability of the platform, and improves the power generation efficiency of the entire system to a certain extent; the telescopic device of this combined power generation platform can effectively help the platform adapt to the wave environment with a wave period of 2s-8s.

[0050] Furthermore, when encountering extremely severe weather, the wave energy detection device will identify the environment and transmit the collected environmental parameters to the central control device. The central control device will adjust the platform's telescopic device to adjust the float of the wave energy power generation device to a fully retracted state, thereby reducing the wave force received by the platform as a whole and reducing the platform's movement amplitude.

[0051] Furthermore, the power storage device 5 also provides the wave detection device 4, the hydraulic system 8 and the electric motor 10 with the electric energy required for operation.

[0052] Furthermore, the hydraulic arm 9 can greatly share the load on the slide rail 7, effectively reduce fatigue damage of the slide rail 7, and increase the service life of the structural components.

[0053] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

[0054] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A retractable barge-type wind-wave combined power generation platform, characterized in that: It comprises a barge-type wind turbine platform (1), a wind turbine generator set (2), a wave energy power generation system, an energy storage device (3), a central control device (5) and a wave monitoring device (4); The wave energy power generation system comprises a wave energy power generation device, an electric slide rail device and a hydraulic connection device, wherein the electric slide rail device is composed of an electric motor (10) and a slide rail (7), and the hydraulic connection device is composed of a hydraulic system (8) and a hydraulic arm (9). The wind turbine generator set (2) is installed at the center of the upper end of the barge-type wind turbine platform (1), and the energy storage device (3) is installed inside the lower end of the tower of the wind turbine generator set (2). A central control device (5) is installed at the center of the barge-type wind turbine platform (1), and wave monitoring devices (4) are installed on four sides of the upper surface of the barge-type wind turbine platform (1), wherein the four wave monitoring devices are arranged in a centrally symmetrical manner. The wave energy power generation system is installed on four sides of the barge-type wind turbine platform (1), and the four wave energy power generation systems are distributed in a centrally symmetrical manner around the barge-type wind turbine platform (1). The wave energy power generation device is installed on the side of the barge-type wind turbine platform (1) through the joint action of a hydraulic connection device and an electric slide rail device. The motor (10) is installed inside the barge-type wind turbine platform (1). One end of the slide rail (7) is connected to the motor (10), and the other end extends to the outside of the platform and is connected to the wave energy power generation device. The hydraulic system (8) of the hydraulic connection device is arranged inside the barge-type wind turbine platform (1) and is located obliquely above the motor (10) and close to the outside of the platform. One end of the hydraulic arm (9) is connected to the hydraulic system (8), and the other end is connected to a connecting rod. The other end of the connecting rod is connected to the slide rail (7), and the connection (11), the second connection (12) and the third connection (13) are all connected by hinges.

2. The retractable barge-type wind-wave combined power generation platform according to claim 1, characterized in that: The energy storage device (3) uses a supercapacitor, which can provide the wind turbine with instantaneous high power required for starting, helping to overcome the resistance of the wind turbine when starting and quickly reach the starting speed. The supercapacitor can provide a higher power output with a smaller volume and weight, and is suitable for installation and use in the limited space inside the tower of the wind turbine.

3. The retractable barge-type wind-wave combined power generation platform according to claim 1, characterized in that: The wave energy monitoring device (4) uses a radar wave meter, which measures the wave height by emitting electromagnetic waves to the sea surface and receiving echo signals reflected from the wave surface. The radar beam scans the sea surface, and the height and position of the wave can be calculated based on the intensity and time delay of the echo signal. After data analysis, the time series data of the wave height is extracted, and the extracted time series data of the wave height is transmitted to the central control device (5).

4. The retractable barge-type wind-wave combined power generation platform according to claim 1, characterized in that: The motor (10) is a large DC motor to provide a large torque to meet the power requirements of the slide rail for carrying heavy objects. The slide rail (7) is a linear slide rail. The motor (10) drives the slide rail through a gear set to achieve a telescopic function.

5. The retractable barge-type wind-wave combined power generation platform according to claim 1, characterized in that: The hydraulic system (8) of the hydraulic connection device adopts a hydraulic motor drive system, which drives the hydraulic arm (9) to rotate by outputting torque to adjust the support angle of the hydraulic arm (9).

6. The retractable barge-type wind-wave combined power generation platform according to claim 1, characterized in that: The central control device (5) is an industrial computer, which can analyze and process the collected time series data of wave heights, and transmit the control information to the hydraulic connection device and the electric slide rail device.

7. The retractable barge-type wind-wave combined power generation platform according to claim 1, characterized in that: The hydraulic connection device and the electric slide rail device are both installed above the waterline of the combined power generation platform. The wave energy power generation device adjusts the support angle of the hydraulic arm (9) through the hydraulic system (8) and the electric motor (10) controls the telescopic length of the slide rail (7) to achieve the change of the extension distance of the float of the wave energy device.

8. The retractable barge-type wind-wave combined power generation platform according to claim 1, characterized in that: Four wave monitoring devices (4) located above the barge-type wind turbine platform (1) can identify and detect environmental waves and transmit wave information to a central control device (5). After processing and analyzing the wave information, the central control device (5) calculates the optimal extension distance of the wave energy float and transmits the adjustment information to the hydraulic connection device and the electric slide rail device to adjust the extension distance of the wave energy device float, thereby improving the stability, power generation efficiency and service life of the platform to a certain extent.

9. The retractable barge-type wind-wave combined power generation platform according to claim 1, characterized in that: The energy storage device (3) is installed inside the tower of the wind turbine generator set (2). The electric energy generated by the wave energy power generation system is used to charge the energy storage device (3). When the electric energy in the energy storage device (3) is full, the electric energy of the wave energy power generation system will be transmitted to the shore. The electric energy in the energy storage device (3) mainly provides a certain auxiliary power supply for starting the wind turbine to help the wind turbine start, which can increase the working time of the wind turbine to a certain extent, increase the overall power generation of the system, and is also used to supply power to the electric slide rail device and the hydraulic connection device of the wave energy power generation system.

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