97results about "Neural network algorithms" patented technology

The invention relates to the technical field of wind turbine generator data analysis, and discloses an offshore wind turbine generator operation data analysis and prediction system. The system comprises a marine environment data integration module for collecting data to generate a multi-source time-space synchronization data set; the multi-modal feature fusion module is used for extracting cross-modal correlation features to generate a high-dimensional fusion feature tensor; the dynamic fault prediction module is used for constructing a two-way gating circulation network model to predict the degradation probability and the residual life of key components of the equipment; and the self-adaptive optimization control module is used for constructing a multi-target dynamic programming model to optimize a fan operation strategy. In addition, the system is further provided with a feedback correction module for correcting prediction model parameters, and a virtual sensor module based on a physical information neural network is used for monitoring tower stress and diagnosing sensor faults. According to the system, comprehensive monitoring, accurate fault prediction and optimal control of the offshore wind turbine generator are realized, the operation efficiency, reliability and safety of the wind turbine generator are effectively improved, and the operation and maintenance cost is reduced.

A method, system, and device for wind speed prediction and layout optimization in wind power generation are provided. The method includes: obtaining a basic wind resource dataset of a target region; constructing a physics-informed neural network model based on the basic wind resource dataset; obtaining wind speeds data at a specific location in a velocity field based on the physics-informed neural networks and constructing a training dataset; training the physics-informed neural network model based on the training dataset; reconstructing a wind speed distribution within the velocity field and predicting wind speeds for a next time period with a wind farm using the trained physics-informed neural network model; and optimizing a layout of a wind turbine cluster based on a reconstructed wind speed distribution within the velocity field. The present application reconstructs a two-dimensional velocity field of the wind farm by training the PINN and enables accurate ultra-short-term wind speed prediction.

The invention provides a wind power wind speed prediction and optimization arrangement method, system and device. The wind power wind speed prediction and optimization arrangement method comprises the steps of obtaining wind power wind speed basic data of a target area; constructing a neural network model based on physical information based on the wind power wind speed basic data; acquiring a wind speed at a specific position in a speed field from a neural network model based on physical information, and creating a training data set; training the neural network model based on the physical information based on the training data set; reconstructing wind speed distribution in a speed field through the trained neural network model based on physical information, and predicting to obtain a wind speed prediction value of the wind power plant in the next time period; and optimizing the arrangement of the wind turbine group according to the wind speed distribution in the reconstructed speed field. According to the method, the two-dimensional flow velocity field of the wind power plant can be reconstructed by training one PINN, and accurate wind speed ultra-short-term prediction is realized based on the trained model.

A computing system identifies a geographical region of interest. The computing system generates a background numerical weather prediction using a mesoscale numerical weather prediction model. The computing system identifies information associated with wind farms for inclusion in the geographical region of interest. For each wind farm, the computing system determines a wake effect of neighboring farms to the first wind farm by projecting wind deficits for the neighboring farms to generate a plurality of wake effects for the geographical region. The computing system generates an estimated power output for the wind farms in the geographical region of interest based on the plurality of wake effects.

The invention discloses a wind power generation system with a self-adaptive compensation function. The wind power generation system comprises a wind power generator, an energy storage device, a self-adaptive compensation controller and a power grid connection module, the self-adaptive compensation controller comprises a real-time monitoring module, a prediction analysis module, a self-adaptive compensation decision module and a control execution module, and the real-time monitoring module obtains operation parameters of the wind power generator and state parameters of the energy storage device; the predictive analysis module predicts and analyzes the wind power change trend and the power grid load demand, the self-adaptive compensation decision module generates control instructions of the wind driven generator and the energy storage device, the control execution module adjusts the operation state of the wind driven generator, and meanwhile the charging and discharging process of the energy storage device is controlled. By monitoring the states of the wind power and the power grid in real time, applying an intelligent algorithm to predict and analyze, and combining with an energy storage technology, self-adaptive compensation of wind power generation fluctuation is realized, the stability and reliability of wind power generation are improved, and adverse effects on the power grid are reduced.

The present invention concerns a method for controlling a wind farm comprising wind turbines, each turbine being suitable for taking a plurality of states, the method comprising the following steps:obtaining configuration data,obtaining experience data,training a model for determining actions enabling to control each turbine of the wind farm depending on the state of each turbine, the model being trained in a training environment on the basis of the experience data so as to maximize a reward function, the training environment being a multi-agent reinforcement learning environment, each agent corresponding to a different turbine of the wind farm, the reward function being relative to the energy produced by the wind farm.

The invention relates to the technical field of hydroelectric generator fault diagnosis, in particular to a hydroelectric generator fault monitoring method, system and device based on a complex network and a medium, a complex network model is constructed based on an actual hydroelectric generator set, and all parts of the hydroelectric generator set serve as nodes of the complex network model. Performing node edge connection according to the weight coefficients of the features between the nodes to obtain an adjacent matrix of the complex network model; acquiring operation data in real time according to sensors arranged on all parts of the actual water-turbine generator set, wherein the operation data comprises at least one of temperature, pressure, current, voltage and vibration frequency; calculating a complex network index according to the operation data and the complex network model; and comparing the complex network index with the network index reference value, and identifying the abnormal condition of the network index by using a statistical analysis method based on a comparison result. According to the method, fault monitoring and analysis can be accurately carried out.

A method of operating a chiller to avoid future surge events includes: applying chiller operating data associated with the chiller as input to one or more machine learning models; and generating a threshold for a controllable chiller variable based on an output of the one or more machine learning models to prevent a future chiller surge event from occurring, which further includes affecting operation of the chiller based on the threshold to prevent the future chiller surge event from occurring. The method can automatically control the cooler to avoid future cooler surge events.

The invention provides a power generation control system of a self-power-generation water meter, a power generation control method of the self-power-generation water meter, a computer readable storage medium and electronic equipment, and relates to the technical field of power generation. The power generation control system of the self-power-generation water meter comprises a data processing module used for predicting load power consumption in a future target time period according to historical power consumption data of a plurality of power consumption loads, determining the target guide vane opening degree of the water turbine based on the predicted load electricity consumption, the current load electricity consumption and the user water consumption habit of the self-generating water meter; the opening degree comparison unit is used for determining the opening degree difference between the reference guide vane opening degree and the target guide vane opening degree; and the data conversion unit is used for obtaining the opening difference and converting the opening difference into a mechanical control signal, and the mechanical control signal is used for indicating the guide vane opening of the water turbine to be adjusted to the target guide vane opening. Accurate power generation control of the self-power-generation water meter can be achieved.

The invention relates to the technical field of wind power management systems, and discloses an intelligent land wind power energy conservation and emission reduction management method and system. Comprising a data perception and acquisition module, a data transmission layer, a data processing and analysis layer, a power generation efficiency optimization module, an equipment health management module, a power grid coordination and energy storage optimization module, a carbon footprint tracking and reporting module and an application layer. The data sensing and collecting module collects wind speed, wind direction, temperature and air pressure data and generator rotating speed, gearbox temperature, blade angle and vibration frequency data in real time through a high-precision sensor, and low-delay data preprocessing is achieved through an edge calculation unit. In the invention, aiming at the delay problem of traditional yaw and variable pitch control, the system utilizes an intelligent algorithm to realize dynamic yaw and variable pitch control, and by accurately predicting the wind direction change and adjusting the fan direction and the blade angle in advance, the influence caused by complex wind conditions is effectively overcome, and the wind energy capture efficiency is greatly improved.

The invention provides a wind turbine generator variable pitch control method and device, a storage medium and terminal equipment, and relates to the technical field of wind turbine generator variable pitch control. The method comprises the steps that current wind resource information of the environment where a target wind turbine generator is located and current operation parameters of the target wind turbine generator are obtained; the wind resource information serves as input, and wind resource prediction information of the environment where the target wind turbine generator is located at the next unit moment is output through a preset wind resource prediction model; and the variable-pitch fatigue state of the target wind turbine generator is determined according to the operation parameters of the target wind turbine generator, and based on the variable-pitch fatigue state of the target wind turbine generator, the target wind turbine generator is controlled to execute the variable-pitch operation at the next unit moment at the first pitch angle, or the target wind turbine generator is controlled to execute the variable-pitch operation at the next unit moment at the second pitch angle. The service life of the blade and the variable pitch bearing can be effectively prolonged.

A computing system identifies a geographical region of interest. The computing system generates a background numerical weather prediction using a mesoscale numerical weather prediction model. The computing system identifies information associated with wind farms for inclusion in the geographical region of interest. For each wind farm, the computing system determines a wake effect of neighboring farms to the first wind farm by projecting wind deficits for the neighboring farms to generate a plurality of wake effects for the geographical region. The computing system generates an estimated power output for the wind farms in the geographical region of interest based on the plurality of wake effects.

The invention belongs to the technical field of wind power control, and discloses a wind driven generator fixed time adaptive neural network variable pitch control method, which comprises the following steps: step 1, establishing a kinetic model of a wind driven generator, and initializing a system state and control parameters; 2, aiming at the wind driven generator system with external interference, designing a fixed time sliding mode surface based on a sliding mode thought; and step 3, designing a fixed-time adaptive neural network variable pitch controller. The method has the advantages that under the conditions that external interference exists in the wind driven generator and parameters are uncertain, rapid convergence of the rotor rotating speed tracking error within fixed time is achieved, and the convergence time does not depend on the initial state.

A method for determining operating states of a wind turbine (2) comprises providing an AI model (10), wherein the AI ​​model 10 is trainable to determine at least one current and / or future operating state of the wind turbine (2) on the basis of input data containing current and / or future environmental parameters (11a) and / or control data (12a), and determining the at least one current and / or future operating state (13) of the wind turbine (2) using the AI ​​model (10) on the basis of the input environmental parameters (11a) and / or control data (12a).

The present invention discloses a method for self-diagnosing faults of a turbine guide vane based on deep learning and graph neural networks, including: S1, constructing a multi-sensor data set; S2, using a deep learning algorithm to identify key patterns and features in the multi-sensor data set; S3, constructing a graph neural network model; S4, inputting the features extracted in step S2 into the graph neural network model constructed in step S3 to analyze the overall operating state of the turbine guide vane; S5, according to the output of the graph neural network model, monitoring and analyzing the performance indicators of the turbine guide vane in real time; S6, applying a pre-trained fault diagnosis model to interpret the abnormal signals identified in step S5 and diagnose potential fault causes and fault types; S7, automatically generating a fault warning according to the diagnosis result of step S6. Through deep learning and graph neural network technologies, the present invention can process and analyze a large amount of data from multiple sensors in real time to ensure that the operating condition of the guide vane is monitored in real time and accurately.

A method includes determining a power profile image comprising a plurality of pixels, the power profile image representing power generation of a plurality of wind turbines of a wind farm as a function of wind speed. The method further includes determining, by a machine learning (ML) encoder model, a potential representation of an attribute of the wind farm based on processing the power curve image by the ML encoder model. The method additionally includes obtaining expected weather data corresponding to a future time. The method further includes determining an expected power generation of the wind farm at a future time based on the potential representation and the expected weather data; and generating an output comprising the expected power generation.

The application relates to the technical field of wind turbine data analysis, and discloses a system for analyzing and predicting offshore wind turbine operation data. The system comprises a marine environment data integration module, which collects data to generate a multi-source spatiotemporal synchronous data set; a multi-modal feature fusion module, which extracts cross-modal correlation features to generate a high-dimensional fusion feature tensor; a dynamic fault prediction module, which constructs a bidirectional gated recurrent network model to predict the degradation probability and residual life of key components of equipment; and a self-adaptive optimization control module, which constructs a multi-objective dynamic programming model to optimize the operation strategy of the wind turbine. In addition, the system is also provided with a feedback correction module to correct the parameters of the prediction model, and a virtual sensor module based on a physical information neural network to monitor the tower stress and diagnose sensor faults. The system realizes comprehensive monitoring, accurate fault prediction and optimized control of offshore wind turbines, effectively improves the operation efficiency, reliability and safety of the wind turbines, and reduces the operation and maintenance cost.

A method for monitoring a rotor assembly of a wind turbine includes receiving, via an imaging analytics module of a controller, thermal imaging data of the rotor assembly. The thermal imaging data includes a plurality of image frames. The method also includes automatically identifying, via a first machine learning model of the imaging analytics module, a plurality of sections of a rotor blade of the rotor assembly within the plurality of image frames until all sections of the rotor blade are identified. Further, the method includes selecting, via a function of the imaging analytics module, a subset of image frames from the plurality of image frames, the subset of image frames comprising a minimum number of the plurality of image frames required to represent all sections of the rotor blade. Moreover, the method includes generating, via a visualization module of the controller, an image of the rotor assembly using the subset of image frames.

The invention discloses a primary frequency modulation cooperative control method and device for a wind generating set under variable wind speed. The method comprises the steps that a wind speed predicted value is predicted according to the running state of the wind generating set; a first interval critical value is calculated according to the reserved overspeed load shedding level, and a second interval critical value is calculated according to the rotating speed maximum value and the tip speed ratio; judging whether the wind speed is in a low wind speed range, a middle wind speed range or a high wind speed range based on the wind speed predicted value, the first interval critical value and the second interval critical value, and selecting a corresponding load shedding frequency modulation strategy; within the low-wind-speed range and the medium-wind-speed range, reference rotating speed is calculated according to the reserved overspeed load shedding level and transmitted to the rotating speed control process of the wind turbine generator; in a middle wind speed range and a high wind speed range, a pitch angle is adjusted and transmitted to a pitch angle control process, and meanwhile, maximum rotating speed control and primary frequency modulation response are considered; and coefficients in cooperative control are set according to different wind speed stages.

The present disclosure provides a power generation control system for a self-powered water meter, a power generation control method for a self-powered water meter, a computer-readable storage medium, and an electronic device, relating to the technical field of power generation. The power generation control system for the self-powered water meter includes: a data processing module, configured to predict the load power consumption within a future target time period according to the historical power consumption data of a plurality of electrical loads, and determine the target guide vane opening of the water turbine based on the predicted load power consumption, the current load power consumption, and the user water consumption habit of the self-powered water meter; an opening comparison unit, configured to determine the opening difference between the reference guide vane opening and the target guide vane opening; a data conversion unit, configured to obtain the opening difference and convert the opening difference into a mechanical control signal, and the mechanical control signal is used to instruct the guide vane opening of the water turbine to be adjusted to the target guide vane opening. The present disclosure can achieve accurate control of power generation of the self-powered water meter.

A method of correcting turbine underperformance includes calculating a power production curve using monitored data, detecting changes between the monitored data and a baseline power production curve, generating operability curves for paired operational variables from the monitored data, detecting changes between the operability curves and corresponding baseline operability curves, comparing the changes to a respective predetermined metric, and if the change exceeds the metric, providing feedback to a turbine control system identifying at least one of the paired operational variables for each paired variable in excess of the metric. A system and a non-transitory computer-readable medium are also disclosed.

A wave energy capture system can include a plurality of arm assemblies. Each arm assembly includes a floatation device and an arm that is coupled to the floatation device and to a body via a pivot. The arm assemblies independently pivot around the pivots with respect to the body in response to movement of the floatation devices caused by waves in water. A mechanical energy capture system converts the independent pivoting of the plurality of arm assemblies around the pivots to electrical energy and provides the electrical energy to either an electronic device that is electrically coupled to the mechanical energy capture system to power the electronic device, or to a battery to recharge the battery.

A method includes determining a power curve image that includes a plurality of pixels that represents power production by a plurality of wind turbines of a wind farm as a function of wind speed. The method also includes determining, by a machine learning (ML) encoder model, a latent representation of attributes of the wind farm based on processing the power curve image by the ML encoder model. The method additionally includes obtaining an expected weather data corresponding to a future time. The method further includes determining, based on the latent representation and the expected weather data, an expected power production by the wind farm at the future time, and generating an output that includes the expected power production.

The invention provides a wind turbine method that includes receiving alarm state data indicating that the wind turbine has entered an alarm state in which operation of the wind turbine has stopped, and receiving sensor data from a plurality of sensors of the wind turbine indicative of operating conditions associated with the wind turbine. When the alarm state data is received, the method includes executing a trained machine learning model based on the received sensor data and the alarm state to obtain an output, where the machine learning model is trained based on historical data associated with a plurality of wind turbines, the historical data being indicative of the plurality of wind turbines previously being in the alarm state. The method includes providing, based on the obtained output, an action to be performed to allow the wind turbine to resume operation.

It is described a method of predicting a frequency value of a utility grid (3) to which a wind park (1) is connected, the method comprising: obtaining plural utility grid measurement values (7) pertaining to a predetermined time range before and until a present point in time; obtaining plural wind park measurement values (12) pertaining to the time range; feeding the plural utility grid measurement values (7) and the plural wind park measurement values (12) into a recurrent neural network trained to output the frequency value at at least one next point in time, the next point in time being in particular between 0.5 s and 2 s after the present point in time.

The invention discloses a digital intelligent simulation method for a hydroelectric generating set speed regulating system based on hydroelectric-mechanical coupling, and aims to solve the problems of low hydroelectric-mechanical coupling degree, poor controllability of a simulation tool and insufficient consideration of a water hammer effect in traditional simulation. The method comprises the following steps: establishing a hydraulic electromechanical coupling model containing hydraulic power (simulating hydraulic transient by a characteristic line method), machinery (a T-S fuzzy model self-defined speed regulator) and electricity (PSS / E tidal current + generator equation); constructing a load flow calculation interface layer for secondary development of a PSS / E Fortran API, and integrating intelligent algorithm modules of GSA, DEPSO and BP neural networks; carrying out real-time interactive simulation and optimizing PID parameters of the speed regulator; and verifying dynamic characteristics of the model based on a water hammer effect analytic solution. The method realizes hydroelectric-mechanical-electrical deep coupling, improves simulation controllability and precision, adapts to unit debugging and power grid dispatching verification, and ensures safe and stable operation of the hydroelectric generating set and the power grid.

The application provides a neural network-based yaw control method and device for a wind turbine, and relates to the technical field of wind turbine yaw control. The method comprises the following steps: obtaining state parameters of a target wind turbine; taking the state parameters of the target wind turbine as input, outputting a first predicted yaw angle of the wind turbine through a first yaw angle prediction model, and outputting a second predicted yaw angle of the wind turbine through a second yaw angle prediction model, wherein the first yaw angle prediction model and the second yaw angle prediction model are obtained by training different deep learning algorithms through historical state parameters and corresponding yaw angles of different wind turbines; determining a predicted yaw angle difference between the first predicted yaw angle and the second predicted yaw angle, and determining a target predicted yaw angle of the target wind turbine based on the first predicted yaw angle and the second predicted yaw angle according to the predicted yaw angle difference. The application improves the accuracy of yaw control for the wind turbine, and improves the efficiency and reliability of wind power generation.

The invention provides a power regulation and load relief method for an offshore fixed wind driven generator, which comprises the following steps of: S1, establishing a mathematical model of a single-pile offshore wind driven generator, and further constructing a motion equation of the single-pile offshore wind driven generator; s2, constructing a nonlinear affine system of the single-pile offshore wind turbine based on a filtering adjustment error technology; and S3, designing an optimal propeller pitch control method by utilizing a self-adaptive dynamic programming technology. According to the scheme, the calculation cost of the controller can be reduced, and the calculation efficiency is improved.

Individual pitch control method and associated wind turbine controller The individual pitch control method (100) comprises an online phase and an offline phase. The online phase comprises acquiring (130) a current value of a parameter corresponding to the wind speed, selecting (140) a current control law and generating (150) a control signal based on the current control law and a current azimuth angle of the blade. The offline phase (110) comprises obtaining a trained reinforcement learning model. Selecting a control law in the online phase consisting in running in inference the trained reinforcement learning model to estimate the current control law from the current value of at least one parameter corresponding to the wind speed.

The present invention discloses a fan fault emergency prediction control method based on a data-driven strategy, which relates to the field of intelligent fan control algorithms. The present invention collects internal state data and external environment data of the fan in normal and emergency states through a historical data set, and uses these data to construct and train a deep learning model, so as to achieve accurate prediction and intelligent control of the fan state. Moreover, the intelligent control method proposed by the present invention can not only improve the operating efficiency of the fan, reduce the maintenance cost, but also significantly enhance the safety and reliability of the system.