6results about How to "Reduce fatigue load" patented technology

The invention discloses a wind turbine generator set active power support method, device and equipment considering a generator set operation state, and relates to the field of wind turbine generator sets and new energy grid connection, and the method comprises the steps: constructing an operation state space model of a target wind turbine generator set; constructing an output equation based on the coupling relationship between the active power output of the operation state space model and the torque fluctuation of the transmission chain; constructing an operation constraint condition; based on the operation constraint condition, constructing a target function with wind turbine generator active power tracking deviation minimization, shafting fatigue load minimization and frequency modulation capability maximization as targets; and based on the real-time operation state data of the target wind turbine generator, adopting a multivariable coordinated optimization method to solve the target function to obtain control parameters for performing operation control on the target wind turbine generator, and adopting the control parameters to perform operation control on the target wind turbine generator. The method can improve the operation stability of the wind turbine generator.

The application belongs to the technical field of offshore wind power generation, and discloses a floating wind turbine mooring positioning method, a mooring positioning system and electronic equipment. The floating wind turbine mooring positioning method obtains the measurement data of wind speed and wind direction and the position information of wind turbine layout, then constructs a mooring system model of the wind turbine to obtain the maximum length and the minimum length of the mooring line; then the genetic algorithm is used to iteratively process multiple design parameters while keeping other parameters unchanged to obtain the optimized position coordinates of the wind turbine, thereby creating a mooring system design database, and according to the established wake model of the floating offshore wind farm, the power generation capacity of each wind turbine and the position information of the layout are calculated according to the offset of the position of each wind turbine until the position information of the layout with the minimum wake loss of the floating offshore wind farm and the maximum power generation capacity of the wind farm is found, which is beneficial to improve the output power of the wind farm and reduce the fatigue load of the wind turbine.

The application discloses a wind farm unit hybrid control method and device suitable for wake effect, comprehensively considers the influence of the wake effect in the wind farm, constructs a data-model hybrid control method, combines the advantages of model driving and data driving, optimizes control of the pitch angle of a wind turbine unit group and the torque of a generator, realizes reduction of the fatigue load of the unit group under the wake effect of the wind farm, and provides technical support for optimized operation of the wind farm.

The application belongs to the field of control and energy, and particularly discloses a linear optimal output regulation control algorithm for a variable-speed wind turbine in a low wind speed area, which comprises the following steps: linearizing a nonlinear system of a transmission shaft model and a tower model of a wind turbine in a low wind speed area at an equilibrium operating point; constructing an external dynamic system capable of generating a disturbance wind speed signal and a linear wind turbine system controlled output tracking signal by using wind speed measurement data of a continuous wave laser radar; defining a controlled output tracking error, and designing an output regulation control rate containing feedforward and feedback control for the linear wind turbine system based on asymptotic convergence of the tracking error to zero; and obtaining a linear optimal output regulation control rate on the basis of the linear output regulation control rate by using coordinate transformation and minimizing a performance index function containing fatigue load.

The invention relates to the field of wind power generation, in particular to a complex terrain wind power plant power and load collaborative optimization control method and system. Acquiring operation data and environment data of the target wind power plant in real time; constructing a multi-fan wake flow influence evaluation model of the target wind power plant based on the environmental data; establishing a multi-objective optimization function by taking the maximization of the total generated power of the wind power plant as a first optimization objective and the minimization of the load of the key structural component of each wind turbine generator as a second optimization objective; on the basis of a multi-fan wake flow influence evaluation model, predicting equivalent input wind speeds of all the wind turbine generators under different control strategies; according to the method, maximization of the total generated power of the wind power plant and minimization of the loads of key structural components of all wind turbine generators serve as optimization objectives, a multi-objective optimization function is established, it is guaranteed that the generating capacity is improved, meanwhile, the fatigue loads of a tower, blades and other components can be reduced, the service life of a draught fan is prolonged, and the operation and maintenance cost is reduced; and the operation safety and economy of the wind power plant are improved.

This invention relates to the field of machining technology, specifically to a multi-stage buffering fixture for clamping the shaft of a heavy workpiece. The fixture includes a support plate and two clamping jaws. The two jaws jointly clamp the main shaft of the workpiece. A first support point is located near the center of each jaw, and a second support point is located between the first support point and the rotating shaft. A limiting groove is formed on the support plate, and the shaft is movably disposed within the limiting groove. Hydraulic rods providing hydraulic support are connected to both ends of the shaft. A buffering mechanism is provided on the outer wall of the support plate, with its elastic movable end abutting against the second support point of the clamping jaws. Through the coordinated operation of the hydraulic rods and the buffering mechanism on the support plate, when the heavy workpiece falls, its deceleration and stopping time is greatly extended, thereby transforming the instantaneous rigid impact into a controllable buffering process, fundamentally avoiding permanent deformation or damage to the fixture structure caused by the enormous impact force.