62 results about "Tidal current energy" patented technology

The utility model relates to the technical field of ocean power generation, solves the problems of low efficiency and low mechanical power of an ocean tidal current energy collecting device caused by limitation of bottleneck factors such as changeable and unfixed tidal current directions, low tidal current speed and difficulty in starting in the prior art, and discloses a tidal current energy collecting device based on a cylindrical fluid theory. The outer wall of the center column is sleeved with a plurality of first bearings. The outer wall of the first bearing is sleeved with the cylinder, first cavities are formed in the two sides of the cylinder, a second cavity is formed in the upper end of the cylinder, a power generation device is fixedly embedded in the second cavity, and a detachable cover plate is fixed to the upper end of the second cavity; the fixed rudder is arranged in the first cavity, the tidal current energy collector is arranged in the first cavity, a main flow channel is formed in the side, away from the fixed rudder, of the cylinder, branch flow channels are directly formed in the main flow channel and the first cavity, the flow velocity of tidal current needed by starting of the device is low, and the tidal current energy can be collected in all directions.

The invention discloses a tidal current energy water turbine array flow field sensing and intelligent control system, which relates to the technical field of ocean renewable energy sources and comprises a flow field sensing module, an array state monitoring module, an intelligent control module, a data storage and analysis module and an emergency response module. The flow field sensing module comprises a dynamic calibration sub-module and a short-term prediction sub-module, and equipment such as an acoustic Doppler current meter is adopted; the array state monitoring module comprises a fault grading diagnosis sub-module; the intelligent control module comprises a wake flow avoidance sub-module, a yaw self-adaption sub-module and a power optimization sub-module, and adjustment is achieved through combination of a PLC and a PID. The data storage and analysis module adopts a mode of combining local solid-state storage and cloud, and BP and LSTM models are built in the data storage and analysis module; the emergency response module can dispose six types of scenes in a grading manner. The flow field sensing error is effectively reduced, the array generating capacity standard-reaching rate is improved, the fault response time is shortened, the operation and maintenance cost is reduced, the grid-connected stability is enhanced, and the comprehensive energy efficiency is improved.

The invention relates to the technical field of cavitation monitoring, in particular to a tidal current energy water turbine cavitation predicting and monitoring method which comprises the steps that S1, multi-sensor data of a tidal current energy water turbine are collected, and the multi-sensor data comprise vibration signals, ultrasonic signals and pressure signals; s2, performing frequency domain analysis on the vibration signal, and extracting an energy value of a high frequency band as a vibration characteristic value; s3, performing transmission attenuation analysis on the ultrasonic signal, and calculating an ultrasonic attenuation rate as an ultrasonic characteristic value; s4, performing frequency domain analysis on the pressure signal, and extracting a pressure pulsation amplitude at a blade passing frequency as a pressure characteristic value; s5, based on the vibration characteristic value, the ultrasonic characteristic value and the pressure characteristic value, the current cavitation state is determined through a cavitation state judgment rule; and S6, predicting the evolution trend of the cavitation state, and estimating the residual safe operation time of the water turbine under the current working condition. The cavitation recognition result is converted into a quantitative life index, and the method has engineering application value and safety guarantee capability.

The application discloses a self-generating buoy for comprehensively utilizing ocean current energy, and relates to the technical field of ocean monitoring.The self-generating buoy comprises a buoy main body, a solar power generation assembly, a tidal current power generation assembly, a wave power generation assembly and an energy storage component; the buoy main body floats on the water surface; the solar power generation assembly is arranged on the upper side of the buoy main body; the wave power generation assembly is arranged on the lower side of the buoy main body; the tidal current power generation assembly can rotate around a vertical axis relative to the buoy main body and can move along the vertical direction relative to the buoy main body; the wave power generation assembly can be driven by the tidal current power generation assembly in the vertical direction, so that the floating assembly can move along the vertical direction to drive the first power generation component to move and generate power; and the energy storage component can store electric energy.The self-generating buoy for comprehensively utilizing ocean current energy can comprehensively utilize solar energy, tidal current energy and wave energy, improve the self-generating efficiency, and adapt to the changes of the tidal current in multiple directions.

The invention discloses a tidal current energy water turbine power prediction and rotation speed adjustment method, and relates to the technical field of offshore tidal current energy power generation, and the method comprises the following steps: a tidal current data collection step: obtaining parameters such as tidal current speed and flow direction, and storing historical data; a power prediction step: constructing a model based on the improved LSTM neural network, and outputting a power prediction value in the future 5-30 min; a rotating speed adjustment decision step: receiving a predicted value and a real-time parameter, and formulating an adjustment instruction; executing a driving step, executing an instruction, and realizing rotating speed control through a hydraulic actuator and the like to form a closed loop; and a monitoring and early warning step: monitoring the state of each step, giving an alarm and generating a report when the state is abnormal. The method improves the power prediction precision and the rotating speed adjustment response speed, reduces the equipment loss, enhances the collaboration with the power grid, guarantees the stable operation of the system, and improves the tidal current energy utilization efficiency.

An ocean wave and tidal current energy conversion system includes a first vessel and a second vessel, the first vessel being parallel and spaced apart from the second vessel. The first and second vessels include supports that receive cylinders that rotate from ocean waves and currents to create hydraulic oil pressure via hydraulic cylinders. The hydraulic oil in the energy conversion system is pumped into a pressure accumulator that removes hydraulic surges and operates an electric generator. The electric generator may power an electrolysis batch system for the production of hydrogen that fills each vessel with hydrogen gas.

The invention discloses a ribbon anti-drag bidirectional blade of a horizontal shaft tidal current energy water turbine, and relates to the technical field of tidal current energy utilization, the ribbon anti-drag bidirectional blade comprises a device main body, the device main body comprises a control assembly and a locking assembly connected with the control assembly, the control assembly comprises a top cover and a second connecting rod, and the top cover is provided with a plurality of first connecting rods; the device has the advantages that a motor in the linkage assembly drives a sliding block on a lead screw to move, then the third connecting rod and the fourth connecting rod are stably driven to conduct transmission, the bearing frame is pushed to drive and control fine adjustment of the surrounding main shaft, and the fine adjustment of the surrounding main shaft is achieved; the control ring is matched to drive the top cover to synchronously act through the bottom ring, the second connecting rod and the first connecting rod, finally the blades on the rotating wheel are driven to rotate around the axes of the blades, and self-adaptive adjustment of attack angles of the multiple blades is achieved.

The utility model relates to a telescopic tidal current energy water turbine blade, which belongs to the technical field of water turbine blades and comprises a tidal current energy water turbine runner hub, a secondary mother blade, a primary mother blade, a son blade, a waterproof motor and a ball screw. And the second-stage mother blade is provided with a storage groove corresponding to the first-stage mother blade. According to the utility model, the plurality of waterproof motors can be synchronously started through the same stepping controller, so that the plurality of primary mother blades can extend out of the secondary mother blades, the lengths of the plurality of blades can be adjusted, and the primary mother blades and the son blades can extend to the optimal length in a tidal current with a relatively high flow speed so as to capture more energy; and in the tidal current with the low flow speed, the primary mother blade and the secondary blade can contract, the resistance is reduced, the efficiency is improved, the secondary blade can rotate within a certain angle range, the attack angle of the blade can be adjusted according to the tidal current, and therefore the energy capture efficiency is improved.

The application discloses a blade and a horizontal shaft tidal current power generator, wherein the blade comprises a main blade, a supporting piece, a spoiler and a damping piece; the supporting piece is provided with a first mounting end and a connecting shaft connected with the first mounting end; the first mounting end is connected with the main blade; the spoiler is sleeved on the outer periphery of the connecting shaft; one end of the damping piece is adapted to be connected with the main blade; the other end of the damping piece is adapted to be connected with the spoiler; when the load borne by the spoiler changes, the spoiler rotates around the connecting shaft to change the included angle between the spoiler and the main blade; the damping piece generates a corresponding damping force, which is used for limiting the spoiler; the spoiler can realize passive variable pitch according to different loads, and does not need to use flow measuring equipment and active variable pitch equipment, thereby avoiding the influence of errors and faults of the flow measuring equipment and the active variable pitch equipment; and since the spoiler adopts mechanical passive variable pitch, various electronic instruments are not needed to participate in variable pitch, and the influence of the marine environment on the blade is reduced.

This invention relates to a construction method for a tidal power station structure, comprising the following steps: S1, installing and positioning the jacket structure using a floating crane; S2, floating the steel casing into the positioning hoist, drilling holes through the steel casing to the design elevation, and pouring pile foundations to form a steel-concrete composite pile structure; S3, prefabricating the foundation on land, pre-installing steel sleeves at the bottom of the foundation, and setting up a double-arm steel cofferdam around the upper perimeter of the foundation; S4, floating the prefabricated components to the design position, and connecting the steel sleeves with the top of the steel casing; S5, inflating airbags to form a sealed water-blocking system, and pumping out water from the double-arm steel cofferdam to create a dry working area; S6, cutting the portion of the top of the steel casing exceeding the pile foundation within the dry working area, and pouring the hollow structure of the foundation; S7, dismantling the double-arm steel cofferdam and jacket structure, and constructing the work platform; S8, hoisting the turbine assembly platform and the work platform as a whole. This invention optimizes the construction process of a tidal power station and improves the stability and durability of the structure.

The application discloses a fish tail type tidal current energy power generation device, which solves the problem that the existing tidal current energy power generation device cannot be effectively applied to the near-shore shallow sea area, has the advantages of large sweeping area and high power generation efficiency, and has the technical scheme that the device comprises a first swing energy absorbing mechanism and a second swing energy absorbing mechanism; the first swing energy absorbing mechanism comprises a first cross arm, the end of the first cross arm is hinged to a first hydrofoil, and the first cross arm is connected with a first hydraulic pump and a first air pump; the second swing energy absorbing mechanism comprises a second cross arm, the end of the second cross arm is hinged to a second hydrofoil, and the second cross arm is connected with a second hydraulic pump and a second air pump; the first hydraulic pump is connected with a second hydraulic motor, the second hydraulic motor is connected with the second hydrofoil, and the second hydraulic motor drives the second hydrofoil to swing along the hinged position of the second cross arm; the second hydraulic pump is connected with a first hydraulic motor, the first hydraulic motor is connected with the first hydrofoil, and the first hydraulic motor drives the first hydrofoil to swing along the hinged position of the first cross arm.

The application discloses a wave energy and tidal current energy combined power generation device on a buoy, relates to the technical field of ocean energy utilization, and comprises a buoy main body, a connecting module, a plurality of wave energy power generation modules and a plurality of tidal current energy power generation modules. The buoy main body is installed on the center upper end of the connecting module. Each wave energy power generation module is connected with the connecting module, and the plurality of wave energy power generation modules are uniformly arranged around the outer periphery of the connecting module. The wave energy power generation module can generate power by acting with the wave lifting and falling. Each tidal current energy power generation module is installed on the lower end of the connecting module, and the plurality of tidal current energy power generation modules are uniformly arranged around the center of the connecting module. The tidal current energy power generation module can generate power by acting with the flow of the tidal current. The application can improve the power generation capacity and power generation efficiency.

The invention discloses a capacity coefficient prediction method, system and equipment for a horizontal-axis tidal current energy power generation device, and relates to the field of field test and analysis of tidal current energy power generation devices, and the method comprises the steps: obtaining a tidal current observation data set of a target sea area and an electric power data set outputted by the horizontal-axis tidal current energy power generation device; interpolating the power flow observation data to enable the power flow observation data to be in one-to-one correspondence with the electric power data, and constructing a matching data set; performing quality control on the matched data set to obtain a target data set; performing equivalent direction and equivalent flow velocity grouping division on the target data set in sequence to obtain a prediction data set; according to the prediction data set, capacity coefficient prediction models of different equivalent directions and different equivalent flow velocity intervals are constructed, and then the current capacity coefficient of the horizontal axis tidal current energy power generation device is predicted. According to the method, the capacity coefficient of the horizontal-axis tidal current energy power generation device under any equivalent flow velocity condition in any equivalent direction can be accurately and scientifically predicted.

The invention relates to the technical field of water turbines, and discloses a double-rotor vertical shaft water turbine set which comprises a first rotor, a second rotor, a transmission device and an output assembly. The first rotor comprises a first blade, a first rotating shaft and a first connecting rod, and the first connecting rod is fixedly connected between the first blade and the first rotating shaft; the second rotor comprises second blades, a second rotating shaft and second connecting rods, and the second connecting rods are fixedly connected between the second blades and the second rotating shaft; the first rotating shaft is parallel to the second rotating shaft, the first rotating shaft and the second rotating shaft are distributed at intervals in the radial direction of the first rotating shaft, and a phase difference exists between the first blade and the second blade; and the transmission device is in transmission connection between the first rotating shaft and the second rotating shaft. Through staggered layout and synchronous rotation of the first rotor and the second rotor, more water turbines can be arranged in the same tidal current energy water channel, the energy conversion efficiency is remarkably improved, meanwhile, the length of a machine body is reduced, the stability is improved, and the service life is prolonged.

The invention discloses a horizontal-axis tidal current energy mounting and docking device suitable for a deep-sea low-flow-speed environment. The horizontal-axis tidal current energy mounting and docking device comprises a fixed base, an AUV docking monitoring system, a locking assembly and a horizontal-axis tidal current energy unit. The fixed base is arranged in a seabed; the locking assembly comprises a connecting seat, a piston and a sealing block; the connecting seat comprises a base and a top seat; the base is arranged on the fixed base; the AUV docking monitoring system is arranged on the horizontal shaft tidal current energy unit and is used for measuring position information of the fixed base and the locking assembly; the bottom of the horizontal shaft tidal current energy unit is a sleeve with a through bottom surface; and the horizontal shaft tidal current energy unit moves the sleeve to be sleeved with the top seat according to the position information. In the scheme, the position information can guide the horizontal shaft tidal current energy unit to move the sleeve to be sleeved with the top seat; the locking assembly is linked with the sealing block through the piston, the hydraulic oil and the sealing block, when the sleeve presses the piston downwards, the sealing block can be pushed through the hydraulic oil to abut against the inner wall of the sleeve in a sealed mode, and fixed connection of the sleeve and the locking assembly is achieved.

The invention relates to the technical field of wave flow energy power generation, in particular to a wave flow combined power generation platform and a power generation method.Three cylindrical box power generation assemblies are arranged in a cylindrical box, each cylindrical box power generation assembly can generate power through wave energy, and a wave power generation assembly can generate power through wave energy; the ocean current power generation assembly can generate power through ocean current energy, the wave current coupling assembly can output wave energy and ocean current energy in a coupling mode, the lower portion of each floater upper shell is connected with a floater lower shell, and an energy storage synergistic assembly is arranged in each floater lower shell. The power generation method of the wave-flow combined power generation platform comprises the steps that the floater upper shell floats relative to the cylindrical box, and the cylindrical power generation assembly generates power; the wave power generation assembly and the ocean current power generation assembly output power to the coupling assembly to generate power. The device is higher in stability, tidal current energy and wave energy are collected, coupled, superposed and output, and the ocean unit area energy utilization rate is higher.

The present invention discloses a pile-type tidal energy generator set, comprising a pile, a yaw structure assembly and a cabin, wherein a lift wing and a generator set are arranged on the cabin, and the two sets of generator sets rotate in opposite directions during operation, and thrusters consisting of a motor and a propeller are symmetrically arranged on the front and rear sides of the cabin, and the internal compartment of the cabin is divided into multiple submerged areas and dry areas by crossbeams; the present invention improves the power of a single-pile unit, improves the center of gravity arrangement and force distribution of the unit, and reduces the difficulty of yaw design and maintenance, and reduces the force on the pile by symmetrically arranging two units, two lift wings, and two thrusters, and designing a drag-reducing lift airfoil of the water-facing section in combination with a new yaw structure.

The invention discloses a self-adaptive modular diversion-desilting collaborative operation system and method, and belongs to the field of hydraulic engineering and environmental protection equipment.The self-adaptive modular diversion-desilting collaborative operation system comprises a mobile platform module, a desilting unit module and a power and system control module, and the mobile platform module is of a two-wing ship type structure and comprises a ship body; the desilting unit module comprises a flow guide mechanism, a desilting curtain and a sludge suction pipe, the flow guide mechanism is arranged in front of the top of the ship body, the desilting curtain is arranged on the flow guide mechanism, one end of the sludge suction pipe is connected to the sludge stacking chamber, and the other end of the sludge suction pipe is installed in front of the ship body close to the desilting curtain and used for pumping suspended silt mixtures; the power and system control module is arranged in the ship body and comprises a tidal current energy-diesel hybrid power system and a multi-sensor fusion intelligent control module, and the mobile platform module, the dredging unit module and the tidal current energy-diesel hybrid power system are all electrically connected with the intelligent control module. Efficient silt treatment is achieved through flow guide and desilting collaborative operation.

The application discloses a kind of tidal current energy power generation system's power generation quality intelligent control method. The deep deterministic policy gradient algorithm based on optimization learning parameter is constructed, the state space of tidal current energy power generation system is handled by algorithm and the network parameter of algorithm is updated, and the system action is obtained after processing;Determine the termination state of current state space, and real-time power generation quality intelligent control is carried out on system action by optimizing learning parameter. The method of the present application realizes the real-time optimization control of the power generation voltage and frequency of tidal current energy power generation system through deep reinforcement learning, can effectively guide the learning process, adjust the convergence to the optimal control strategy in real time, and be applied to the actual tidal current energy power generation system to adapt to the change of tidal current velocity, adapt to complex marine environment and tidal current change, enhance the robustness of the system, ensure that the output power generation voltage and frequency meet the requirements of power grid, ensure the stability of power generation quality in dynamic environment and improve overall performance.

The invention discloses a submersible tidal current energy power generation device capable of automatically adjusting the running depth and an adjusting method.The submersible tidal current energy power generation device comprises a floating body, a water ballast tank is arranged above the floating body, a tidal current energy power generator is arranged below the floating body, a working condition controller is installed in the floating body, and a water tank, an air pump and an air storage tank are arranged in the water ballast tank; the water tank is fixed to the bottom of the water ballast tank, a sea valve is arranged at the bottom of the water tank, an air storage tank and an air pump are installed above the water tank, and an inflation pipeline is connected between the air pump and the air storage tank. According to the submersible tidal current energy power generation device capable of automatically adjusting the running depth, submersible design is adopted, and sea surface wind wave loads are effectively avoided; meanwhile, the design capable of automatically adjusting the depth enables the tidal current energy generator to automatically adjust the working depth along with the change of the tidal current flow velocity so as to be in the optimal working condition in real time, and the power generation efficiency is greatly improved; in addition, when sea surface working conditions are severe, such as typhoon and other extreme weather, the depth of the water turbine can be adjusted to a safe position, and the device is prevented from being damaged.

The application discloses a kind of offshore wind power tidal current energy combined complementary power generation device, including multiple pedestals and motor group fixedly connected to the upper side of pedestal, multiple pedestals extend connecting rod, so that multiple pedestals are fixedly connected by connecting rod each other, and floating platform is formed in multiple pedestals middle part, and wind driven generator is fixedly connected with floating platform;Motor group is penetrated from the inside of pedestal and extends downward, and extending fixedly connected with rotary bearing, rotary bearing is fixedly connected with deflection support, deflection support is fixedly connected with tidal current generator, so that tidal current generator can rotate with deflection support under the driving of motor group, to match the direction of tidal current, to ensure that power generation is increased;Deflection support lower side is fixedly connected with multiple anchor cables, for fixing pedestal and deflection support.

The invention discloses a wave-tidal current energy modular power generation device of a marine ranch aquaculture facility, and belongs to the technical field of crossing of marine renewable energy sources and fishery equipment. An energy capture module in the device comprises a horizontal shaft resistance type impeller and a vertical shaft resistance type impeller. The energy synthesis and conversion module comprises a differential synthesis system and a power generator, and the differential synthesis system combines rotation inputs which are from all impellers and are inconsistent in rotation speed and / or direction into single stable rotation outputs in the same direction through a multi-stage differential mechanism and a gear set of a built-in one-way clutch so as to drive the power generator; the mounting and fixing module comprises an adjustable fixing clamping jaw and an adjustable bracket; the adjustable support comprises a fixed frame, a movable frame and a telescopic fork arm mechanism connecting the fixed frame and the movable frame, and the adjustable support can simultaneously adjust the overall off-net distance of the device and adapt to different distances between adjacent stand columns of the aquaculture facility. According to the device, wave-tidal current composite energy is modularly, efficiently and reliably captured on a culture facility for power generation, and the adaptability is high.

This invention discloses a rectifier tail fin device for a horizontal axis tidal current generator, comprising two side-by-side torsional tail fins fixedly connected to the housing of the horizontal axis tidal current generator set; the two torsional tail fins have opposite torsional directions and are spirally twisted. This invention, through the design of two sets of opposing torsional tail fins, can achieve mutual counter-current flow. When the torsional directions of the two sets of tail fins are opposite, the vortex directions they generate are also opposite. This mutual counter-current effect helps to further consume the energy of the wake, achieve rapid dissipation, reduce energy loss, and achieve the effect of counter-current dissipation, reducing the impact of wake effects on the horizontal axis tidal current generator. This improves stability and control performance, enhances the operating efficiency, stability, and lifespan of the horizontal axis tidal current generator, and provides a better solution for the application of horizontal axis tidal current generators.

The invention relates to the technical field of tidal current energy utilization, and discloses an oscillating hydrofoil motion response and fluid-structure interaction deformation solving method, which comprises the steps of defining a hydrofoil motion mode and structure and fluid key parameters, and defining core characteristics of pitching given motion, free heaving motion and bending-torsion coupling deformation; establishing a heaving motion kinetic equation based on the Newton's second law, and constructing a bending-torsion coupling deformation control equation in combination with the structural mechanics principle; building a three-dimensional numerical simulation model containing block grids and boundary layer encryption design, and meeting calculation requirements through spanwise and time discretization processing; solving a fluid distribution load and a total lift force based on a Navier-Stokes equation; and a four-order Runge-Kutta method is adopted to solve the heaving motion response, and a Newmark-beta time integral method and a finite difference method are adopted to solve the bending-torsion coupling deformation. In this way, the strong coupling characteristics of hydrofoil movement and fluid-solid coupling deformation can be accurately captured, and technical support is provided for design optimization and performance improvement of the oscillating hydrofoil type tidal current energy device.

The invention discloses a micro-flow-velocity self-starting tidal current energy power generation system and aims to solve the problems that a traditional tidal current energy power generation device is difficult to start at a low flow velocity, poor in tidal current reversal adaptability and the like. The system comprises a central decision module, a phase conversion device, a hybrid energy storage unit and a safety protection unit. In the starting stage, the super capacitor provides surge current larger than or equal to 80%, phase conversion is matched, and micro-flow-velocity self-starting is achieved. In the power generation stage, the generator charges the super capacitor in a constant-current mode through the Boost circuit, and the energy storage efficiency is optimized through voltage margin control. And the bidirectional adaptation unit ensures the continuous torque during the reverse rotation of the power flow through direction identification, sequence switching and dynamic compensation. The safety protection unit integrates phase sequence diagnosis and LSTM prediction, early warning of faults is carried out 10 minutes in advance, and the hardware protection sub-circuit rapidly cuts off driving pulses. The system greatly improves the micro-flow speed starting reliability and the complex marine environment adaptability, and improves the tidal current energy utilization rate.

The invention relates to the technical field of power equipment, and discloses a multi-energy complementary offshore power generation structure, which is characterized in that a tidal current energy power generation module is additionally arranged on a pile foundation for supporting a photovoltaic power generation module, and when the output of photovoltaic power generation is suddenly reduced due to sunset or weather reasons, the tidal current energy power generation module can be used for generating tidal current energy; the tidal current energy power generation can be used as a stable supplementary or alternative power supply, so that the total output power curve of the whole system becomes more gentle, the phenomena of intermittency and volatility in the power generation process caused by single photovoltaic energy power generation in the traditional scheme are avoided, and smooth power output is realized.

The present application relates to the field of ocean energy development, and provides a kind of ocean energy comprehensive utilization floating energy island device and its working and maintenance method, integrated arrangement large offshore wind turbine, solar power generation module, tidal current power generation module and wave power generation module, as well as hydrogen energy, synthetic fuel and biomass energy production module, realize the comprehensive utilization and complement of multiple ocean energy, and have the function of quick operation and risk avoidance maintenance, can solve the problems of poor power generation stability, low power density and small adaptation range of traditional ocean energy utilization device.

The present application relates to the field of ocean energy development and utilization, and particularly relates to a tidal current energy array site selection method based on a three-dimensional high-precision numerical model, comprising the following steps: (1) a macro site selection method; (2) a micro site selection method; (3) a high-precision layered three-dimensional numerical model building method; (4) a tidal current energy resource refinement evaluation method; by analyzing the model calculation results, the characteristics of the target sea area, such as the spring high-water rapid-falling rapid time, the neap high-water rapid-falling rapid time, the tidal current stability, the energy flow density, the tidal current energy resource theoretical reserves, the single-width energy flow flux, and the like, are analyzed, and the evaluation results are presented through a visual technology to guide the placement mode of the tidal current energy unit; compared with the traditional two-dimensional or simplified three-dimensional model, the evaluation accuracy is greatly improved. The tidal current characteristics at different water depths can be simulated in detail, so that the tidal current energy resource evaluation is more comprehensive and accurate.

The invention belongs to the technical field of new energy power generation, and particularly relates to a vortex-induced vibration power generation device which comprises a supporting frame, a track, a power generator and a rotary cylindrical vibration system. Based on the classical vortex-induced vibration principle in fluid mechanics, the device can effectively capture water flow energy in incoming flow and convert the water flow energy into electric energy. According to the Kutta-Joukowski lift force theory, the lift force generated by vortex-induced vibration can be remarkably enhanced by rotating the cylindrical vibrator to actively introduce the circular rector, so that the vibration amplitude is increased, and the power generation efficiency and the environmental adaptability are effectively improved. The device is simple in structure and low in cost, and can be widely applied to various renewable energy scenes such as ocean tidal current energy and wind energy.

The application provides a height adjustment system of a tidal current generator set. Through the height adjustment system of the tidal current generator set, the tidal current generator set can be quickly and stably lifted or lowered, the height adjustment efficiency of the tidal current generator set can be improved, and the maintenance efficiency of the tidal current generator set can be improved. The height adjustment system of the tidal current generator set has a simple structure and low cost. The height adjustment system of the tidal current generator set is provided with a rotating arm, so that the tidal current generator set is away from the pile foundation, the flow interference and vortex influence of the pile foundation on the water body are reduced, the vibration of the tidal current generator set is avoided, the tidal current generator set can be safely operated, and the influence on the power generation of the tidal current generator set is reduced.