85 results about "Wind gust" patented technology

A system and method for gust load reduction testing of an elastic full-aircraft model in a large low-speed wind tunnel, which belong to the technical field of wind tunnel test apparatuses. The system in the present invention comprises a gust generator and a supporting device that are mounted in a wind tunnel. The supporting device comprises a model sliding guide rail, mounting bases and a trolley, wherein the mounting bases are fixedly mounted at two ends of the model sliding guide rail, the trolley is mounted on the model sliding guide rail, an aircraft model is mounted on the trolley, two parallel sliding rails are mounted on each mounting base, a slider is mounted on each of the two sliding rails, the two sliders are connected by means of a slider connecting base, a lifting ring assembly plate is mounted on the slider connecting base, a plurality of first lifting rings are welded on the bottom face of the lifting ring assembly plate, second lifting rings are welded on the mounting base, springs are hooked between the first lifting rings and the second lifting rings, and a smooth shaft sleeve and a smooth shaft are mounted in the mounting base, one end of the smooth shaft being fixedly mounted in the slider connecting base by means of a bolt, and a limiting block being fixedly mounted at the other end of the smooth shaft. The present invention has a compact structure, involves simple installation and is low cost.

The invention discloses a thunderstorm and gale dynamic extrapolation forecasting method based on multi-task MSTA-ConvLSTM, and relates to the technical field of atmospheric sciences, and the method comprises the steps: constructing a multi-source fusion spatio-temporal data set and a gale process record file, and obtaining a data set; a thunderstorm gale nowcasting model based on an MSTA-ConvLSTM model is constructed; according to the method, a dynamic gating mechanism of lightning data is introduced, whether a lightning probability prediction task is started or not is intelligently judged according to the lightning activity intensity, thunderstorm, gale and co-evolution characteristics of the lightning process are considered, 0-3-hour high-temporal-spatial-resolution nowcasting is achieved, the limitation of traditional single-task forecasting is broken through, a multi-task learning structure is adopted, and the prediction efficiency is improved. The model is guided to recognize the lightning occurrence probability during main task gale prediction, and the overall perception capability of a severe convection system is improved; extreme sample learning is enhanced through a weighted loss function, and output is optimized in combination with a gust coefficient model, so that the forecasting precision and practicability are effectively improved.

The invention relates to a crane gust prevention method and equipment, electronic equipment and a computer storage medium, and belongs to the technical field of intelligent control, the crane gust prevention method comprises the following steps: acquiring wind speed information of the position of the crane and working state information of the crane, and constructing a multivariable time sequence vector; performing layer-by-layer feature extraction on the multivariable time sequence vector by adopting a multi-layer convolutional layer to obtain a multi-channel feature vector; the convolution kernel length of each convolution layer in the multiple convolution layers is increased in sequence; performing weighted summation on the multi-channel feature vectors based on a channel attention mechanism to obtain weighted feature vectors, and performing hidden feature extraction on the weighted feature vectors by adopting a long-short-term memory network to obtain hidden feature vectors; and identifying the multi-channel feature vector and the hidden feature vector by adopting a full connection layer to obtain an anti-gust control strategy of the crane. The anti-gust control of the crane can be realized.

The invention belongs to the technical field of multi-rotor unmanned aerial vehicle control, and particularly relates to a multi-rotor unmanned aerial vehicle self-adaptive feedforward control method based on a mesoscopic wind field model. Comprising the following steps: firstly, based on a relaxation time model of a lattice Boltzmann method, establishing a mapping relation between a Knudsen number and turbulence intensity and thermal noise intensity of a macroscopic wind field, and realizing parameterized representation of a mesoscopic wind field; then, constructing a mesoscopic wind field model by synthesizing a real-time wind field containing average wind, turbulent flow, gust and thermal noise components; then, calculating the wind resistance according to the predicted wind speed, designing a self-adaptive gain mechanism fusing a real-time tracking error, an error wind direction included angle and a historical error trend, and generating a dynamic feedforward control quantity; and finally, combining the feedforward control quantity with a feedback control quantity based on gravity compensation to form a comprehensive wind resistance control law. Starting from the mesoscale, the disturbance suppression capability and trajectory tracking precision of the unmanned aerial vehicle in complex environments such as strong wind and turbulent flow are enhanced.

The invention provides a wind driven generator control method and system and a server, and relates to the field of wind driven generator safety control, and the method takes a clearance radar as a safety hard constraint, obviously reduces the tower sweeping risk, can maintain the control reliability under the conditions of rain, fog, clutter and the like, reduces the unnecessary power limitation and shutdown occurrence probability, and improves the safety of the wind driven generator. The misjudgment rate of the wind driven generator in the clearance control process is greatly reduced; in addition, according to the method, wind measurement load shedding and clearance safety can be coupled in the control process of the wind driven generator, feedforward control can be carried out under the working conditions of gust, shearing, yaw errors and the like, and the load of the wind driven generator is reduced.

The invention discloses a ventilation window control method used in a gust environment. According to the method, crosswind, downwind, headwind and conventional states are judged by collecting the pressure of the left air inlet side, the pressure of the right air inlet side and the pressure of the tail end in real time, and side opening adjustment, unit number adjustment and rotating speed control are executed according to the different states. And in the crosswind state, the opening degree range is limited, side adjustment is carried out in the mode that the opening degree range is not smaller than the minimum stepping, and the left-right air volume ratio approaches the target coefficient. In a downwind or upwind state, the number of running machines is adjusted preferentially, and then the rotating speed is adjusted step by step, so that the tail end pressure returns to a tolerance range of a reference value. After an exit condition is met, freezing maintenance is carried out, and conventional ventilation is returned; and when the sensor is abnormal or the environment exceeds the limit, a degradation mode and bottom ventilation are entered, so that the stability and reliability of the system in a complex gust scene are improved.

The invention relates to the technical field of wind power generation monitoring and control, and discloses an intelligent control system for a wind turbine generator, which comprises a high-precision rotary laser scanning module, an intelligent decision module, a self-adaptive scanning control module, a rapid pitch-variable execution mechanism and a system communication interface, the high-precision rotary laser scanning module is used for acquiring blade deformation data in real time and comprises a mechanical rotary scanning device and a sealing and positive pressure system. According to the method, the LSTM time sequence prediction capacity and the Q-learning online optimization capacity are combined, turbulence intensity changes are effectively adapted, accurate and self-adaptive control over complex turbulence working conditions is finally achieved, the overall response time is shortened from instruction generation to paddle action, extreme gust is coped with in time, the tower sweeping risk and the fatigue load are remarkably reduced, and the working efficiency is improved. And through accurate advanced control and rapid compensation, the power generation loss caused by turbulent flow and improper variable pitch is reduced, and the economic benefit is outstanding.

In the world of small-scale wind power generation, we have yet to see the sight of mass-produced wind turbines in operation. As one way to create this world, a rotating tower came to mind, and we conceived of a vertical-axis spiral wind turbine with a strong frame that can withstand typhoons and gusts of wind, and blades attached to its spiral axis. [Solution] Inspired by the framework of a rotating tower, a lightweight and sturdy spiral wind turbine is constructed by attaching a cylindrical base 3 to the wind turbine's core 2, assembling a framework of multiple circular horizontal edges 5 and multiple spiral shafts 4 around the cylindrical base to form an elongated ellipsoid shape, attaching strip-shaped blades 10 to the spiral shafts, and using a thin plate-like structure with a wind vent hole 11 in the center of the blade, which can be easily attached to the spiral shaft using the hole in the blade, this vertical-axis spiral wind turbine, which can be manufactured by local industries, captures wind speed and converts it into rotational force, and delivers that energy to a power generation device that requires it via a belt 17 through a driving wheel 7, thus contributing to society.

The application relates to a rotary switch cooperatively regulated tail edge air blowing gust generator and a use method thereof, and belongs to the technical field of wind tunnel tests. The rotary switch cooperatively regulated tail edge air blowing gust generator comprises a wing profile shell assembly, a gas supply pipeline assembly, a rotary switch assembly and a control system. The tail edge of the wing profile shell is provided with a multi-nozzle array, the rotary switch is composed of independent detachable rotary shaft units, the air blowing flow variation law can be changed by adjusting the installation combination of the rotary shaft units corresponding to the nozzles, and various customized gust outputs with consistent or inconsistent main frequencies and consistent or inconsistent phases can be realized. The control system adopts a PID or model prediction control algorithm, the rotary shaft rotation angle is fed back through an encoder, the gas supply mass flow is monitored through a flowmeter, the rotary shaft rotating speed and the gas supply pressure are cooperatively adjusted in a closed loop, the amplitude drift and the frequency deviation problems of the gust field caused by the air source fluctuation and the flow field interference under open loop control are solved, and the stability and controllability of high-speed / high-frequency gusts are significantly enhanced. The application has no inertial load and compact structure, and can be adapted to various wind tunnels.

The application discloses a kind of anti-misoperation control methods of telescopic support, it includes: real-time acquisition of the current state of support and wind data;When support is in folded state, judge whether wind data satisfies unfolding condition;If it satisfies, then cumulative unfolding timing;If it does not satisfy, then clear zero unfolding timing;When unfolding timing reaches preset unfolding delay, control support to execute unfolding action and update current state to unfolded state;When support is in unfolded state, judge whether wind data satisfies folding condition;If it satisfies, then cumulative folding timing;If it does not satisfy, then clear zero folding timing;When folding timing reaches preset folding delay, control support to execute folding action and update current state to folded state.The application is through the delay judgment mechanism of "cumulative-clearing", ensure that only when wind condition continues to be stable and meet the requirements, trigger support action, effectively filter transient wind fluctuation, avoid the frequent misoperation caused by gust oscillation near critical wind speed.

The invention discloses a control method for a function type gust system. The method comprises the following steps: calculating respective target control curves of a transverse gust subsystem and a vertical gust subsystem according to a received test working condition characteristic value set by a user; respectively sending the respective target control curves to the transverse gust subsystem and the vertical gust subsystem; and when the transverse gust subsystem and the vertical gust subsystem move according to respective target control curves, respective control parameters of the transverse gust subsystem and the vertical gust subsystem are adjusted according to actually measured motion characteristic values. According to the invention, accurate control of a gust system can be realized, gust test environments of different types and different wind speeds can be simulated in a wind tunnel, aerodynamic performance data of test equipment can be accurately obtained, the test equipment is ensured to be safe and reliable, and fault hidden dangers of the test equipment in gust can be found as soon as possible.

The invention discloses a wind-proof photovoltaic module structure, and relates to the technical field of photovoltaic modules, the wind-proof photovoltaic module structure comprises a base and a photovoltaic panel, the middle of the upper end of the base is fixedly provided with a fixing column, the periphery of the base is provided with an adjusting assembly and a protection assembly in an annular array shape, and the ends, close to the base, of the protection assembly and the photovoltaic panel are connected with a locking assembly. One end of the locking assembly is fixedly connected with a connecting arm, a wind measuring assembly is arranged on one side of the outer end of the base, and when gust suddenly occurs, the rotating speed of a three-cup type wind wheel of the wind measuring assembly is linearly increased along with the wind speed, so that an electromagnetic valve of the telescopic air cylinder is reversed, and the telescopic air cylinder is switched from an extending state to a retracting state; the push-pull rod pulls the positioning sliding block to slide in the direction of the fixing column along the limiting sliding groove, the inclination angle of the auxiliary supporting plate hinged to the sliding block is gradually increased, the photovoltaic panel rotates around the hinge lug at a constant speed under the guidance of the guide sliding plate and the guide sliding groove and is gradually folded to be vertical, and at the moment, the windward area of the back face of the photovoltaic panel is sharply reduced.

This invention belongs to the field of aircraft, specifically relating to a gust load reduction device and method based on a synthetic dual-jet cooperative control surface. The gust load reduction device includes a wing body, a flap rotatably mounted on the trailing edge of the wing body, and a synthetic dual-jet actuator mounted on the flap. The two jet outlets of the synthetic dual-jet actuator are located on the lower surface of the flap; and the angle between the two jet outlets and the lower surface of the flap in the downstream direction is adjustable. The larger the angle between the flap and the wing body, the smaller the angle between the two jet outlets and the lower surface of the flap. The synthetic dual-jet actuator of this invention can reduce gust load from multiple aspects, achieving a good gust load reduction effect while being simple in structure, lightweight, and requiring no additional air source.

1. The name of the design product: mobile wind field equipment. 2. The use of the design product: mobile wind field equipment for testing and calibration of complex wind field environment such as sudden wind, gust, wind shear, turbulence, etc., and unmanned aerial vehicle wind resistance testing. 3. The design points of the design product: shape and pattern. 4. The picture or photo that best shows the design points: perspective view 1.

The invention discloses a gust front identification method based on Hough transform, and belongs to the technical field of radar detection and identification, and the method comprises the steps: carrying out the processing of a preprocessed elevation radar reflectivity factor based on multi-sample statistics through employing a preprocessed dual-polarization parameter, and obtaining a reflectivity non-meteorological echo map; carrying out binarization processing and filtering processing on the reflectivity non-meteorological echo map; traversing each pixel region in the filtered reflectivity non-meteorological echo map to carry out region shrinkage and edge detection to obtain a reflectivity non-meteorological echo map after edge detection; and carrying out identification by adopting Hough transform to obtain linear position features of the gust front, splicing a gust front region by adopting joint constraint of endpoint distance and direction consistency to obtain a gust front image pixel position, and sketching to obtain a gust front identification result image of the original image. The gust front identification method solves the problems that an existing gust front identification method is high in dependence on a template, poor in adaptability and insufficient in identification precision and stability under the complex radar echo condition.

This invention discloses a windbreak system for the takeoff and landing field of electric vertical takeoff and landing (EVTOL) aircraft, comprising several windbreak nets, several lifting devices, and a control device. Several windbreak nets are arranged around the perimeter of the takeoff and landing field. Lifting devices are connected to both sides of each windbreak net, and these devices cooperate to raise and lower the nets. The control device is signal-connected to the lifting devices to control the raising or lowering of one, multiple, or all windbreak nets at a time. This windbreak system allows for the selective raising of windbreak nets on one or adjacent sides based on wind direction during EVTOL takeoff and landing, thereby reducing the impact of crosswinds and gusts on the takeoff, landing, and hovering phases of the EVTOL aircraft. Furthermore, it allows for the raising of the surrounding windbreak nets during parking, mooring, or support operations, forming a circumferential wind barrier and providing dual protection for takeoff and landing and parking.

The application provides a kind of gust-oriented wind turbine unit overspeed prevention control method, device and medium, belong to wind turbine unit control field.The method comprises: obtaining real-time wind speed data and generator speed data;According to real-time wind speed data, determine whether to enter the gust mode of wind turbine unit;In the case of entering gust mode, adjust the minimum pitch angle of wind turbine unit operation to be the minimum pitch angle of gust mode operation;According to generator speed data, calculate generator speed acceleration;According to generator speed data and generator speed acceleration, determine whether to enter acceleration overspeed prevention control strategy;In the case of determining to enter acceleration overspeed prevention control strategy, superimpose preset pitch rate on normal pitch rate.In the gust mode, the pitch angle in the operation of wind turbine unit is raised, so that the angle of attack margin of blade can be kept in a safe range, and after entering the acceleration overspeed prevention control strategy, superimpose preset pitch rate on normal pitch rate.

The present invention provides a system and method for a radar / optical signal integrated gust detection system. [Solution] In a particular embodiment, the system includes an optical system mounted on an aircraft and configured to provide optical wind measurements from a volume of space along the direction of travel of the aircraft. Furthermore, the system includes a radar system mounted on an aircraft and configured to provide radar wind measurements from a volume of space along the direction of travel of the aircraft. The system also includes a processor that receives optical wind measurements from the optical system and radar wind measurements from the radar system, the processor configured to characterize gusts in the volume of space by fusing the optical wind measurements with radar wind measurements, the fusing of optical wind measurements with radar wind measurements based on meteorological conditions in the volume of space.

This invention provides a method for calibrating gust flow fields based on a dynamic pressure sensor probe. Using the dynamic pressure sensor probe, the pressure data under no-wind conditions is averaged and then subtracted from the incoming static pressure to obtain the zero-point pressure. Then, the wind speed control system is activated, and after the wind speed stabilizes, the collected pressure is subtracted from the zero-point pressure to obtain the gust field pressure value. The gust field pressure is then averaged to obtain the gust field atmospheric pressure value at each point. The gust direction angle is obtained by substituting the measured pressure data into the calibration fitting formula, based on the incoming wind speed. Finally, the gust amplitude is obtained by combining the wind direction angle and the incoming wind speed. This method uses simple probe equipment, has low requirements for the measurement environment, is not easily damaged, and can obtain the incoming velocity and gust amplitude in real time. It can also provide the direction angle of the velocity after disturbance by the gust generator.

This invention provides an artificial intelligence-based method for identifying gust front wind shear, comprising: performing noise filtering, missing value imputation, data smoothing, wind shear value calculation, and sample selection and extraction on collected radial velocity data to obtain gust front wind shear samples; based on the gust front wind shear samples, performing coordinate system transformation, sample set partitioning, and data annotation to obtain an expanded dataset; designing and training a Mask R-CNN model architecture to obtain a gust front wind shear identification model; and inputting the expanded dataset into the gust front wind shear identification model for gust front wind shear detection. This invention reduces the dependence on reflectivity factor data, focusing on building the identification model based on gust front radial velocity data, which can not only accurately identify gust front wind shear but also achieve pixel-level segmentation and localization of wind shear regions, improving identification efficiency.

The invention provides a large unmanned helicopter flight control method and device based on instruction superposition. In the large unmanned helicopter flight control method based on instruction superposition, when an unmanned helicopter takes off and lands, a balancing reference quantity, an open-loop front balancing quantity, a virtual rudder integration control quantity, a negative feedback control quantity and a manual remote control quantity are superposed to generate a comprehensive control quantity; according to the invention, the take-off and landing safety of the large unmanned helicopter under different take-off weights, gust interference during take-off and landing and complex ground environments can be improved, and subsequent manual control quantity can be smoothly released and shielded after safe take-off.

The present disclosure provides a wind turbine intelligent variable pitch control system and method, which first utilizes the time series of feedforward wind field map obtained by laser radar, performs ECG event recognition through space-time sequence analysis, performs wind condition diagnosis, and accurately predicts whether the incoming flow wind field is a regular fluctuation or a high-risk extreme gust. Based on the diagnosis result, the control system can make intelligent decisions: when normal working conditions are identified, the normal mode is automatically run to optimize power generation and fatigue load; when a high-confidence ECG event is identified, the emergency mode is switched to as the primary target of rapid unloading and ensuring limit safety. This dynamic mode switching mechanism based on event driving enables the controller to call the optimal dedicated control law for different scenarios, thereby breaking the inherent limitations of static control and achieving the collaborative optimization of safety and efficiency in the full working condition range.

The application provides a gust alleviation or flutter suppression test system and method for visual imaging measurement, and relates to the field of wind tunnel test. The system solves the problems of model damage, limited measurement accuracy, poor safety and inability to measure the whole field caused by installing sensors on the model in traditional wind tunnel test. The system comprises a gust generator, a test model, a support device, a video measurement camera, a light source and a data processing and control system. The method is as follows: installing and debugging the gust generator, the model and the support device; pasting mark points on the model and installing a calibration camera; laying and debugging the light source; after the wind tunnel and the gust generator reach a predetermined state, the camera collects data; after digital image stabilization, motion estimation and noise suppression, the data is fed back to the control system to drive the rudder deflection to achieve load alleviation. The flutter suppression test does not use a gust generator. The application does not need to lay sensors, can improve measurement safety and efficiency, and can realize whole field vibration monitoring of the structure.

The application provides a wind turbine extreme gust identification method and overspeed inhibition method, so that the wind turbine can be quickly identified when encountering gust, and the overspeed inhibition method is started to prevent the generator from stopping due to overspeed and increase the hub and yaw imbalance limit load. By statistically analyzing the speed characteristic quantity of the normal power generation condition, a speed characteristic threshold curve is obtained by using a multiple interpolation method, the threshold curve envelopes all speed characteristic quantities under the normal power generation condition, and ensures that the overspeed inhibition method will not be triggered under the normal power generation condition. Meanwhile, the threshold curve can effectively distinguish the normal power generation condition and the gust condition, and can identify the gust as early as possible. In addition, in combination with the gust identification method, the overspeed inhibition method fully considers the limit performance of the wind turbine, and an additional pitch angle and generator torque are superimposed on the basis of the original pitch PI and torque PI, so as to achieve fast pitch and increase torque, and inhibit the overspeed of the generator.

1. Name of the product in this design: Three-dimensional ultrasonic wind speed and direction sensor. 2. Purpose of this design: This design is used to accurately measure the three-dimensional wind speed, wind direction, and airflow conditions in the atmosphere, as well as turbulence and instantaneous gusts in the air. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The present invention relates to the field of wind tunnel tests, and provides a device and method for a low-speed wind tunnel gust or flutter half-model test, for use in solving the problems that existing gust or flutter half-model test devices cannot achieve complete release of heave and pitch degrees of freedom, and that it is difficult for the devices to be shared by two tests. The device comprises an overall frame; the overall frame is mounted in a wind tunnel test section; two slide rails are vertically provided on a front end surface of the overall frame; two slider assemblies are arranged left and right on a rear end surface of a carriage; the two slider assemblies are in sliding fit with the two slide rails in one-to-one correspondence; two spring seats are provided on the top end of the overall frame; each spring seat is provided with a horizontal shaft; inner ring ends of two clockwork springs are connected to the horizontal shafts of the two spring seats in one-to-one correspondence; outer ring ends of the two clockwork springs extend downward and are separately connected to the carriage; a model mounting seat is cylindrical; and the model mounting seat is in rotatable fit with the carriage. The present invention can be used for both a gust load alleviation test and a body freedom flutter test, thereby enabling the two tests to share the same device.

The invention discloses an anti-gust distributed cooperative control method and system for multiple wind turbine generators in a regional wind field, and relates to the technical field of wind power generation control, and the method comprises the steps: sensing gust disturbance information according to the operation state data of each generator in the wind field and meteorological sensor data; generating a cooperative anti-interference demand signal through a preset communication rule based on the topological relation between the wind turbine generators and the gust disturbance information; according to the safe operation constraint and the cooperative demand signal of each unit, obtaining the preliminary adjustment amount of an anti-interference control parameter; based on the wind field overall power scheduling target and the control parameter adjustment amount, an optimization control instruction giving consideration to disturbance rejection and power generation is obtained through a distributed optimization algorithm; and adjusting an execution mechanism according to the optimization control instruction to realize collaborative anti-gust control. By means of the mode, efficient distributed cooperation among wind field units can be achieved, gust impact can be effectively resisted, and meanwhile stable output of the overall power generation power of a wind field is guaranteed.

The invention relates to an upper sound insulation device of a sound insulation barrier easy to install. More specifically, the present invention relates to a sound insulation device which is easy to install and can be quickly and conveniently fixed to the upper part of a sound insulation barrier, thereby having excellent working efficiency. The device can effectively prevent road vehicle noise from penetrating through the sound insulation barrier to diffuse outwards, and therefore the good sound insulation effect is achieved. In addition, the device further has the structural supporting strength enough to bear strong wind loads such as typhoon or gust, and snow accumulation in winter can be prevented fundamentally.

A wind speed protection control method and device for a photovoltaic support, the method comprising: obtaining real-time environment data, the real-time environment data comprising a current instantaneous wind speed and a gust duration; determining a first equivalent wind speed based on the current instantaneous wind speed and a preset conversion ratio, the first equivalent wind speed being used to represent an equivalent average wind speed of a preset reference time length and an instantaneous intensity safety influence of a current wind condition on the photovoltaic support, the preset conversion ratio being positively correlated with the gust duration; and determining a wind speed protection control strategy for the photovoltaic support based on the first equivalent wind speed. Thus, by combining the instantaneous wind speed and the gust duration to determine the first equivalent wind speed used to determine whether to trigger the safety protection strategy, the timeliness of safety protection is improved.

The invention discloses a floating type offshore photovoltaic array attitude monitoring and overturning early warning method and system, belongs to the technical field of ocean engineering monitoring, and aims to solve the technical problems of inaccurate attitude monitoring and delayed overturning risk early warning caused by the action of waves and gust of a floating type photovoltaic array in a dynamic ocean environment. Comprising the following steps: acquiring floating body dip angle attitude data, a wave direction spectrum and gust wind speed marine environment data of the whole array in real time, dynamically determining a current inherent rolling period by continuously monitoring free oscillation response under non-extreme excitation and performing spectral analysis, and constructing an overturning risk index; a first-level early warning threshold value and a second-level early warning threshold value are dynamically set according to the current inherent rolling period, the threshold values are lowered when the wave period is close to the inherent period, and a first-level early warning signal or a second-level early warning signal is generated by comparing the real-time risk index with the threshold values. The method is mainly used for real-time safety monitoring and overturning risk early warning of the floating type offshore photovoltaic array, stable operation of a photovoltaic power station is guaranteed, and major accidents are prevented.