235 results about "Floating wind turbine" patented technology

The invention provides a strong nonlinear simulation method and device suitable for a large floating fan, and the method comprises the steps: dividing a target floating fan into a plurality of body structures according to the model parameters of the target floating fan, so as to construct a multi-body model containing a plurality of degrees of freedom, and building a whole machine load and a motion transmission path; the aerodynamic load input of each body structure is calculated, and the nonlinear dynamic response of the blade is calculated according to the aerodynamic load input of each body structure; according to the coordinate transformation relation, the nonlinear dynamic response of the blade is converted into a whole coordinate system and input into a multi-body dynamic model of the whole machine, generalized active force and generalized inertia force of each body structure in the target floating type draught fan are obtained through calculation, and the motion response of each body structure of the target floating type draught fan is obtained through simultaneous solution. According to the scheme, the motion response of each body structure of the target floating fan can be accurately determined, so that the running state of the floating fan in the deep and far sea complex environment can be accurately evaluated.

The invention discloses a floating fan numerical simulation method based on a cross-scale typhoon modeling algorithm, and aims to solve the problems that a typhoon unsteady-state wind field cannot be accurately simulated and the influence of the typhoon unsteady-state wind field on the coupling dynamic response of a floating fan cannot be accurately simulated in the prior art. The method comprises the following steps: firstly, dividing the whole typhoon process into a plurality of typical stages according to meteorological characteristics; for each stage, calculating a time-varying average wind field by adopting a parameterized mesoscale typhoon model, and embedding a three-dimensional turbulence component generated based on a microscale turbulence model to generate a high-fidelity stage wind field file; integrating the wind fields of all stages into a complete and continuous unsteady typhoon wind field input file by using a splicing algorithm; and finally, inputting the wind field file into a pneumatic-hydrodynamic-servo-elastic coupling simulation platform OpenFAST, and carrying out full-coupling dynamic response analysis on the floating fan. According to the method, the prediction precision of the load and motion response of the floating fan system under the extreme typhoon working condition is improved, and a reliable method is provided for typhoon resistance design and safety evaluation of the floating fan.

The invention relates to the technical field of offshore wind power equipment, and discloses an offshore floating type wind turbine mooring system optimization method based on a proxy model, and the method comprises the following steps: S1, determining key design parameters; s2, sampling to generate design points; s3, establishing a total index function of multi-target coupling; s4, generating a sample database through numerical simulation; s5, constructing an agent model by using a Kriging method; s6, calling the proxy model to search an optimal solution by adopting a differential evolution algorithm; s7, performing numerical simulation verification on the optimal solution and judging convergence; and S8, if not, updating the database and returning to S5 for iteration, and if so, outputting the optimal configuration. According to the method, the problems that a traditional optimization method is high in simulation calculation cost and too long in consumed time are solved, searching is carried out through the proxy model instead of high-precision simulation, the verification iteration step is combined, the optimization efficiency is greatly improved while the result accuracy is guaranteed, and the multi-target mooring scheme with the optimal comprehensive performance can be efficiently obtained.

The invention discloses an aerodynamic load loading method, device and equipment and a medium, relates to the technical field of ocean engineering, is applied to a processor, and comprises the following steps: receiving scale motion data currently acquired by a scaling model of a floating wind turbine generator, and amplifying the scale motion data to obtain full-scale motion data; determining a first expected aerodynamic load borne by the floating wind turbine generator based on the full-size motion data; reducing the first expected aerodynamic load to obtain a second expected aerodynamic load borne by the scaling model; decomposing the second expected aerodynamic load into output thrust of each propeller in the loading device, and converting the output thrust into a PWM control signal; the loading device regulates and controls the rotating speed of each propeller based on the PWM control signal, and loads a target aerodynamic load generated by rotation to the scaling model; and skipping to the step of receiving the scale motion data again until a preset stop condition is met. And the loading of the aerodynamic load on the scale model is accurately realized.

The invention belongs to the field of wind power, and discloses a floating wind turbine generator thrust constraint robust adaptive pitch control method, which comprises the following steps: establishing a floating wind turbine generator nonlinear model considering coupling between rotor rotation dynamics and platform pitching motion; setting a control target based on comprehensive consideration of power adjustment, platform stability and limit load constraint; designing a self-adaptive propeller pitch control method based on a fast self-adaptive law; and designing a thrust envelope protection system based on thrust limit detection and a self-adaptive thrust avoidance strategy, and integrating the thrust envelope protection system into the self-adaptive pitch control method, so that the wind turbine generator can operate within an allowable thrust range. The self-adaptive propeller pitch control method can achieve efficient power adjustment and platform pitching motion suppression at the same time, is superior to a traditional method in the aspects of transient response and robustness, and is particularly suitable for the severe marine environment.

The utility model discloses a tension leg floating type wind power platform pile foundation connecting device, and relates to the technical field of tension leg floating type wind power platform mooring connection, the tension leg floating type wind power platform pile foundation connecting device comprises a bottom connecting mechanism and a steel cable protection mechanism, the bottom connecting mechanism comprises a welding back plate, and a tongue plate is arranged on the welding back plate; the upper end of the tongue plate is connected with a steel cable joint through a pin shaft, a steel cable is connected to the steel cable joint, and the two ends of the tongue plate are locked and fixed through locking mechanisms respectively. The steel cable protection mechanism is located on one side of the pile foundation, and the steel cable is placed on the steel cable protection mechanism after being connected and used for preventing the steel cable from being bent and damaged when the steel cable is pre-laid to the seabed. The device is simple in structure, reliable in performance, convenient to operate and capable of adapting to underwater rapid connection, only one ROV is needed for auxiliary operation in the whole operation process, the tie-back installation process of the mooring rope and the anchoring device of the tension leg wind power platform is simplified, and the mooring and installation cost of the tension leg wind power platform is reduced.

The invention discloses a wave pitching motion control method and system for an offshore floating type wind turbine generator, and belongs to the technical field of offshore wind power equipment control. The method comprises the following steps: signal acquisition: acquiring unit operation state, marine environment and pitching motion state parameters in real time; wave load prediction: predicting a future wave load based on the improved LSTM neural network model; evaluating a pitching motion state, pre-judging a motion trend through a kinetic model, and judging whether the motion trend exceeds a safety threshold value or not; cooperative control instruction generation: generating cooperative control instructions for fine tuning of a variable pitch angle, a generator torque and a cabin yaw angle based on an MPC algorithm; and control execution and feedback correction: driving an execution mechanism to act and dynamically correcting a control instruction. By accurately predicting the wave load, cooperatively adjusting multiple controllable components and dynamically correcting, efficient and accurate suppression of pitching motion is achieved, and the unit operation stability, the wind energy capturing efficiency and the equipment safety are improved.

A system and method for assisting a drag operation of a floating wind turbine (FWT) is disclosed. The FWT is provided with a wireless communication system and at least one position sensor for measuring the position of the FWT in at least three degrees of freedom. The main towing vessel is connected to the floating wind turbine by a towing line. The main dragging ship comprises a winch, a DP system and a two-way wireless communication system. A drag assist system / module / controller may be combined with a DP system. The one or more auxiliary drag vessels are connected to the floating wind turbine by drag lines. And one or more auxiliary dragging ships are provided with a two-way wireless communication system. A drag assist system / module / controller calculates setpoints (forces and directions) for all drag ships based on one or more input parameters from the floating wind turbine, one or more input parameters from each auxiliary drag ship, and one or more input parameters from the main drag ship.

The invention provides a mooring failure prediction method, device and equipment based on a floating type wind turbine, and belongs to the technical field of floating type wind turbines.The method comprises the steps that platform data of the floating type wind turbine and environment data of the environment where the floating type wind turbine is located are obtained; analyzing the platform data, and constructing a platform numerical simulation model of the floating wind turbine; splitting the environmental data, and extracting key environmental parameters of each environmental parameter type; on the basis of the key environment parameters, motion change information and mooring force change information of the floating wind turbine are predicted through a platform numerical simulation model and a motion mooring prediction model; according to the method, the mooring failure evaluation strategy is used for carrying out anomaly evaluation on the motion change information and the mooring force change information, a mooring failure evaluation result of the floating type wind turbine is generated, and the accuracy of motion response prediction of the floating type wind turbine is effectively improved.

The invention provides a floating fan active ballast system and a control method thereof. The system comprises a sensing module, a control module, an execution module, a power supply module, a shore-based remote control module and a communication module. The sensing module collects platform attitude and in-cabin liquid level data in real time through a multi-redundancy sensor; the control module adopts a triple-redundancy architecture and generates a load adjusting instruction in combination with an intelligent algorithm; the execution module realizes accurate allocation of ballast water through cooperative operation of a redundant water pump and a valve; the power supply module adopts a dual-power design to ensure continuous power supply; the shore-based remote control module realizes remote monitoring and maintenance; the communication module guarantees data interaction and instruction transmission. The single-point fault resistance of the system is improved through multi-redundancy design, high-precision and quick-response attitude adjustment is realized by combining intelligent and adaptive control, and meanwhile, multiple operation modes are integrated, so that the reliability and safety of the system in a complex marine environment are ensured.

The invention provides an environment monitoring system suitable for an offshore floating type wind turbine generator platform. A data acquisition module is used for acquiring air turbulence and hydrodynamic environment parameters around the offshore floating type wind turbine generator platform in real time; the data transmission module is used for transmitting the collected data to the data preprocessing module; the data preprocessing module is used for cleaning and normalizing the received data; the data fusion module is used for carrying out integration and correlation analysis on the preprocessed multi-source data; the intelligent analysis module is used for performing depth calculation and model reasoning based on the fused data; the early warning decision module is used for generating an early warning signal and a control suggestion according to the intelligent analysis result; the display module is used for displaying the monitoring result and the early warning information in a visual mode; the control feedback module is used for converting the control suggestion into a control instruction and sending the control instruction to a wind turbine generator control system, and synchronous monitoring and intelligent processing of the turbulence and hydrodynamic environment of the offshore floating type wind turbine generator platform are achieved by constructing a complete monitoring system.

The invention relates to an offshore wind-fish fusion platform for intensive sea use. The offshore wind-fish fusion platform comprises a semi-submersible foundation platform, a gravity type culture net system and an intelligent culture management system, the semi-submersible foundation platform is composed of a floating fan platform, an anchor chain and a shared suction anchor, and the anchor chain is connected between the floating fan platform and the shared suction anchor; the gravity type breeding net system comprises tension leg mooring systems and a breeding net, the breeding net is of an annular structure, the tension leg mooring systems are arranged on the breeding net at intervals and used for fixing the breeding net, the shared suction anchors are connected with the bottoms of the tension leg mooring systems, and the connecting points are arranged at the bottom of the breeding net in a surrounding mode. And the semi-submersible foundation platform is arranged at the central position of the gravity type culture net system. The utilization rate of the ocean is improved.

The present invention relates to a floating wind turbine generator (WTG) foundation for a floating WTG system, the floating WTG foundation comprising: a floater having a generally cylindrical shape, wherein the floater defines a vertical axis, the floater comprising ballast at a lower end thereof, an upper projection extending upward from the floater, the upper projection having a smaller cross-section than the floater, at least three anchors which are connected to the seabed, at least three tendon assemblies, each tendon assembly extending between one of the anchors and a respective mounting position on the floater.

The utility model discloses a floating type draught fan platform which comprises a buoy temporarily supported on a supporting column, the buoy is connected with the draught fan platform through a vertical steel cable, during construction, after a draught fan is provided with part of components, the draught of the floating type draught fan platform is increased, the buoy is emptied to provide vertical buoyancy, part of the weight of the draught fan is offset, and after the draught fan is hoisted, the buoy is connected with the draught fan platform through the vertical steel cable. The method comprises the following steps: dragging a floating fan platform to a deepwater area, injecting water into the platform to sink in the deepwater area, injecting water into the buoy to sink, and after the buoy is supported on a supporting structure of the platform, releasing a vertical connecting steel cable of the buoy and the platform, draining ballast water of the buoy, floating the buoy, separating from the platform, assisting in displacement of the buoy, and finishing installation of the fan. Construction is completed under the condition that the water depth of a wharf is insufficient by combining the separated floating cylinder with the fan platform.

A floating wind turbine foundation (100) and a wind turbine generator. The floating wind turbine foundation (100) comprises a floating main body (1) and a bending-moment compensation device (2). The floating main body (1) comprises a first upright column (11) and a plurality of floating body assemblies (12). The first upright column (11) comprises a first end and a second end arranged in an axial direction. The first end is used for supporting a wind turbine main body (200). The plurality of floating body assemblies (12) are arranged at intervals around the first upright column (11), and each floating body assembly (12) is connected to the first upright column (11). The bending-moment compensation device (2) is arranged on the floating main body (1). The bending-moment compensation device (2) comprises a counter-support assembly (21), traction members (22), and a driving mechanism (23). The counter-support assembly (21) is connected to the first upright column (11) and is provided with an execution end. Each traction member (22) is connected between a floating body assembly (12) and the execution end. The driving mechanism (23) drives the execution end to move toward the second end of the first upright column (11) and to at least partially protrude beyond bottom surfaces of the floating body assemblies (12) in the axial direction, so as to tension the floating body assemblies (12) via the traction members (22). The wind turbine generator comprises the wind turbine main body (200) and the floating wind turbine foundation (100). The traction members (22) are used to tension the floating body assemblies (12) to neutralize bending moments of the floating body assemblies (12), thereby improving the load-bearing capacity of the floating wind turbine foundation (100) and reducing the costs of the floating wind turbine foundation (100).

This invention discloses a semi-submersible offshore platform with movable wave-breaking plates, belonging to the field of floating wind turbine turbulence. It comprises multiple platform components connected by trusses. Each platform component includes a column with a vertically oriented axis. Several movable wave-breaking plates are provided on the outer wall of the column, spirally distributed around the column's axis. Each movable wave-breaking plate includes an anti-roll plate fixed to the column's peripheral wall. A hinge is located at the lower end of the anti-roll plate; one side of the hinge is fixedly connected to the anti-roll plate, and the other side is connected to an arc-shaped cover plate. The hinge's rotation axis is horizontally oriented. The side of the arc-shaped cover plate facing the column's outer wall bulges upwards, allowing it to rotate around the hinge's axis under buoyancy. This invention can reduce vortex-induced motion and decrease platform oscillation.

Floating wind turbine for providing mechanical power, characterized in that an upright rotating tower (2) is firmly connected at its lower end to a floating body (14), and this rotating tower (2) is guided by a stationary base tower (1).

The embodiment of the invention provides a fluid simulation method, an optimization method and equipment for a wind wave coupling floating type wind turbine, and belongs to the technical field of offshore wind power generation. According to the simulation method, a wind field and a wave field are coupled, a six-degree-of-freedom motion equation and a mooring model of the floating platform are established, a dynamic fluid interaction method and a catenary theory are adopted for coupling calculation, real-time interaction of pneumatic / hydrodynamic loads and platform motion in unsteady solution is achieved, and the simulation precision is improved. Therefore, the dynamic response of the floating wind turbine under the wind wave coupling effect is simulated with high precision. A layout optimization method is provided based on the simulation method, and an optimal layout scheme for improving the power generation efficiency and the operation stability of the floating wind power plant is finally obtained by setting layout parameters, performing coupling simulation, extracting performance indexes, constructing an evaluation function and performing iterative optimization by using an optimization algorithm. According to the method, the precision limitation of a traditional engineering simplified model under the strong unsteady working condition is overcome, and a reliable technical means is provided for evaluation of the deep and far sea floating wind power plant.

The invention discloses a floating type fan platform and a mounting method thereof, and relates to the technical field of offshore wind power, the floating type fan platform comprises a floating body platform, a ballast part, a connecting mechanism and a mooring system; the floating body platform comprises a central stand column and a plurality of side column assemblies distributed around the central stand column, each side column assembly comprises a side stand column, a bypass floating body and a transition piece, the side stand column is connected with one end of the bypass floating body through the transition piece, and the other end of the bypass floating body is connected with the central stand column; the ballast part is connected to the lower portion of the floating body platform through a connecting mechanism, and the connecting mechanism can drive the ballast part to move in the direction close to or away from the floating body platform. The mooring system is connected with the transition piece. According to the application, the ballast piece can be switched between the contraction position for transportation and the extension position for in-place work through the connecting mechanism, so that the stability of the floating type fan platform and the transportation convenience are both considered. In addition, the floating body platform of the floating type draught fan platform is designed in a modularized mode, and the assembling efficiency of the floating type draught fan platform is improved.

The application discloses a kind of floating wind turbine tower cylinder posture correction method and device, the method includes: when judging tower cylinder posture exception based on target tower cylinder's multi-source feature data, determine the pitch angle increment according to multi-source feature data and current control parameter, and determine the yaw angle increment according to multi-source feature data;According to the pitch angle increment and the yaw angle increment, the posture of target tower cylinder is corrected, and the posture correction is carried out under the constraint of safety boundary;When judging that tower cylinder posture is still abnormal after correction, optimize current control parameter based on new multi-source feature data;Based on the control parameter after optimization and new multi-source feature data, determine new pitch angle increment and carry out again posture correction, until tower cylinder posture returns to normal.The application can timely and accurately correct the posture of floating wind turbine tower cylinder, meet the stable operation demand of floating wind turbine in complex sea state, and avoid safety hazard.

The application provides a floating wind turbine platform dynamic response determination method and device and electronic equipment, wherein the method comprises: obtaining a flow field calculation domain and a hydrodynamic calculation domain; obtaining wind load, wave load and flow load according to a pre-designed calculation model and the flow field calculation domain; obtaining a fitting equation according to the wind load, the wave load, the flow load and the hydrodynamic calculation domain; obtaining a wind turbine induced velocity set according to the fitting equation and the flow field calculation domain; obtaining a calculation residual set according to the wind turbine induced velocity set, a variable velocity set and a preset formula; and in the case that the calculation residual set meets a preset condition, determining the dynamic response of the floating wind turbine platform according to the fitting equation corresponding to the calculation residual set and the wind turbine induced velocity set. Through the application, the problem that the floating wind turbine platform dynamic response under the combined action of wind, wave and flow cannot be coupled and analyzed in the related art is solved.

A method of operating a floating wind turbine (1), FWT, is provided. The floating wind turbine (1) is exposed to waves during operation, the waves causing a wave induced motion of the floating wind turbine (1). The floating wind turbine (1) is configured to operate a protective function. The method comprises obtaining, during operation of the floating wind turbine (1), monitored wave data (70) indicative of a wave height of the waves the floating wind turbine (1) is exposed to during operation. It further comprises processing the monitored wave data (70) to obtain processed wave data, wherein the processing comprises at least a processing by descriptive statistical analysis, comparing the processed wave data to a threshold (140) that corresponds to a predetermined sea state and activating the protective function upon detecting that the processed wave data reaches or exceeds the threshold (140).

The present application belongs to the technical field of dynamic response prediction of marine engineering structures, and specifically discloses an intelligent prediction method for dynamic response of floating wind turbines under internal wave action. Firstly, the dynamic response prediction result given by the intelligent prediction model and the actual operating state of the wind turbine are obtained in real time, the error between the two is calculated and fed back to the control system, the control parameters such as the blade pitch angle are automatically adjusted according to the error and the size of the internal wave load to reduce the blade vibration. At the same time, the genetic algorithm is selected to optimize the control parameters, the objective function considering the power generation efficiency, structural safety and internal wave load is set, and the optimal parameter combination is found through selection, crossover, mutation and other operations. A real-time monitoring system is established to continuously collect internal wave and wind turbine operation data, and a trigger condition is set. When the condition is met, the control parameters are recalculated and adjusted according to the current data. The method focuses on real-time feedback and optimization control, effectively improving the operation stability and power generation efficiency of the floating wind turbine in complex marine environment.

The invention relates to a wind power monitoring technology, in particular to a floating fan structure damage detection method and system based on transfer learning, and the method comprises the steps: constructing a motion scaling model of a floating fan, designing a blade vibration data collection unit, collecting and processing structural damage monitoring data, and obtaining a scaling model test data set; constructing a source domain structure damage fault identification model based on deep learning, and training the identification model according to the scale model test data set; establishing a floating fan full-coupling simulation model, and constructing a damage simulation method; performing multi-working-condition analogue simulation on the floating fan to generate damage simulation data; and fusing actually-measured structural damage fault data and damage simulation data to obtain a target domain data set, carrying out transfer learning on an identification model to obtain a high-precision identification model, and carrying out real-time monitoring and fault early warning on a fan state. According to the method, the limitation caused by data scarcity is overcome, and floating fan structure damage identification modeling of effective knowledge migration from the model to a real machine is realized.

A method of constructing a floatable foundation (100) for a wind turbine generator, the method comprises: assembling a hull (101) for the floatable foundation (100) at a shoreside yard (102), the hull (101) comprising three interconnected columns (20,21,22), each column (20,21,22) having a ballast tank (140-142) arranged at least partly therein and a ballast water filling interface (143-145) fluidly connected to the respective ballast tank (140-142); moving the hull (101) from the shoreside yard (102) to a floating position adjacent or spaced from the shoreside yard (102); and with the hull (101) in the floating position, filling each of the ballast tanks (140-142).

The invention discloses a test device for two-degree-of-freedom cooperative forced vibration of an offshore floating fan, and the device comprises a floating fan model, a pitching forced vibration device, a surging forced vibration device, a cooperative motion support frame, a cooperative control system, and an aerodynamic load measurement device. The pitching-surging coupled motion state of a floating fan model in a marine environment is simulated, and measurement of parameters such as aerodynamic characteristics, dynamic response and wake wind speed of the floating fan is realized under the condition of no pool. The double-degree-of-freedom forced vibration testing device is low in manufacturing cost, compact in structure and flexible to adjust, double-degree-of-freedom forced vibration of the floating type draught fan is achieved through a relatively small testing device, the multi-working-condition and high-frequency testing requirements in the research and development process of the offshore floating type draught fan are met, the research and development cost and the test development difficulty are effectively reduced, and the testing efficiency is improved. And a reliable test device is provided for structural design, blade optimization and wind wave resistance improvement of the floating fan.

This invention belongs to the technical field of offshore wind turbine generators. It proposes a floating wind turbine generator and its control method based on adaptive wind capture in response to ocean waves. A flexible adaptive adjustment mechanism is installed in the nacelle assembly and the tower. The flexible adaptive adjustment mechanism includes a hydraulic station and multiple support components connected to the hydraulic station via hydraulic pipelines. The two ends of each support component are connected to the nacelle assembly and the tower, respectively, and the multiple support components are located at different positions between the nacelle assembly and the tower. By supplying different pressures to the multiple support components, the horizontal angle of the nacelle assembly relative to the tower is adjusted, ensuring that the wind turbine assembly is perpendicular to the wind direction and guaranteeing power generation efficiency. Furthermore, the flexible adjustment method of pressure control can buffer the impact of large wave amplitude and frequency in extreme environments, ensuring control flexibility and structural stability.

The present application belongs to the technical field of mooring system, and particularly relates to a mooring system with energy storage and anchoring functions and a floating wind turbine foundation. The mooring system with energy storage and anchoring functions comprises a floating body floating on the water surface, an energy conversion assembly arranged on the floating body, a counterweight assembly located below the floating body, a connecting block connected to the bottom of the floating body and provided with a wire hole, and a mooring chain penetrating through the wire hole. One end of the mooring chain is anchored to the bottom of the water, and the other end of the mooring chain is connected to the counterweight assembly. The energy conversion assembly is in transmission connection with the counterweight assembly. When the floating body is displaced relative to the anchoring point under the action of waves, the counterweight assembly can move up and down reciprocally. The energy conversion assembly is used for converting the kinetic energy of the counterweight assembly into electric energy. The present application can solve the problem of how to convert wave energy into electric energy.