7results about How to "Improve wind energy utilization efficiency" patented technology

This utility model belongs to the field of amphibious unmanned surface vessels (USVs), specifically relating to a folding airfoil sail amphibious USV. It includes a base, with a hydraulic telescopic rod at the upper end of the base, a mast at the upper end of the hydraulic telescopic rod, an upper sail on the upper outer side of the mast, a lower sail on the lower outer side of the mast, and a stepper motor at the upper end of the mast. This utility model features a unique folding mechanism, allowing the sail to be folded and stored when not in use. This not only improves the portability and storage efficiency of the equipment but also reduces wind and water resistance in adverse weather conditions or when underwater operations are required, lowering the risk of equipment damage. Using a symmetrical airfoil sail maintains good aerodynamic performance under different wind directions and angles, providing stable and continuous aerodynamic propulsion. This design not only improves wind energy utilization efficiency but also enhances the USV's adaptability to complex and changing environmental conditions.

The invention provides a wind power plant station intelligent optimization method and system based on cloud edge collaboration, and the method comprises the steps: analyzing the current information of each subsystem in a to-be-optimized wind power plant station, and carrying out the reconstruction of each subsystem through combining the current information with a to-be-constructed function; constructing an edge all-in-one machine according to an optimization upgrading strategy of the wind power station, and integrating each intelligent subsystem to the edge all-in-one machine to realize data sharing of each subsystem; based on a cloud-side collaborative platform technology architecture, an edge all-in-one machine is adaptively connected with an intelligent station integrated management platform, the integrated management platform is in communication connection with a group industry data middle station, and intelligent management is performed on an intelligent wind power station through the industry data middle station. According to the method, a plurality of subsystems in a station are deeply integrated on the basis of a cloud-side collaborative platform technology architecture, an existing wind power station is transformed into an intelligent station through a digital intelligent means, and the safety level and the management level of the station are improved.

The present application discloses a wind tunnel simulation experimental device and method for adding small wind turbines between large wind turbines, comprising: a direct current suction wind tunnel, wherein the direct current suction wind tunnel comprises an air intake section, a power section, an experimental section and an air outlet section which are connected to each other, wherein the air intake section is provided with an air inlet, the air outlet section is provided with an exhaust port, and the power section is provided with a wind tunnel motor and a wind tunnel fan; wherein a large wind turbine model and a large wind turbine model dynamometer are provided in the experimental section, and several rows of small wind turbine model groups are provided between the large wind turbine model and the large wind turbine model dynamometer, and each row of the small wind turbine model groups comprises several small wind turbine models; the present application is used to simulate the improvement of wind energy utilization efficiency by adding small wind turbines between large wind turbines in newly built wind farms and existing wind farms. Compared with the existing numerical simulation, the simulation process of the present application is closer to the real natural state, and the simulation results are more accurate and reliable, which can better provide technical support for micro-site selection decisions of wind farms.

The invention provides a vertical axis wind power blade airfoil suitable for medium and low wind speeds, a wind wheel and a generator. The maximum thickness of the airfoil is 18.37% of the chord length of the airfoil; the maximum thickness position of the airfoil is 31.20% of the chord length of the airfoil; the maximum camber of the airfoil is 2.11% of the chord length of the airfoil; and the maximum camber position of the airfoil profile is 23.20% of the maximum camber position of the airfoil profile. The blade airfoil provided by the invention has higher lift coefficient and lift-drag ratio under the working conditions of larger local attack angle and lower Reynolds number, the aerodynamic performance of a vertical axis wind turbine at medium and low wind speeds can be effectively improved, and the wind energy utilization efficiency of a unit is improved. The requirements of comprehensive smart energy and distributed wind power projects with complex topographic conditions and dense or mutual shielding buildings can be met, and the power generation efficiency of the vertical axis wind turbine under the working conditions of large wind resource change and low average wind speed is improved.

The invention discloses a variable-attack-angle vertical axis wind turbine loaded with an iris-like mechanism, and belongs to the technical field of wind power generation. A fixed connecting rod fixing opening is formed in the edge of an iris outer disc of the variable-attack-angle vertical axis wind turbine, and a fixing column is arranged at the fixed connecting rod fixing opening; the iris inner disc is arranged in the iris outer disc, an adjusting strip hole is formed in the iris inner disc, and a moving column is arranged in the adjusting strip hole; one end of the fixed connecting rod body is connected with the side part of the wind turbine blade, and the other end is connected with the fixed column; one end of the movable connecting rod body is connected with the side part of the wind turbine blade, and the other end is connected with the moving column; one end of the switching rod is connected with the end part of the fixed connecting rod body through a fixing column; the other end of the switching rod is connected with the end part of the movable connecting rod body through a moving column; one end of the rotating shaft passes through the center of the iris inner disc, and the other end is connected with a power generation rotor in the generator chassis. The wind energy utilization rate is effectively increased; potential safety hazards during operation are avoided, and stability and economical efficiency of the wind turbine are improved.

The invention belongs to the technical field of wind power generation. The invention provides a wind power plant non-uniform layout micro-siting optimization method and system. The method comprises the following steps: determining a site boundary of a wind power plant according to a sensitive area range and a to-be-arranged position; a parallelogram is used as a grid shape arrangement of a minimum unit, and the maximum generating capacity of the whole wind power plant is used as an optimization target; and performing iterative optimization valuing on the origin coordinate, the long side azimuth angle, the included angle between the long side and the short side, the distance between the starting point and the short side adjacent point, the distance between the starting point and the long side adjacent point, the short side distance diffusion coefficient and the long side distance diffusion coefficient of the coordinate system to obtain an optimized wind turbine generator regular arrangement scheme. According to the method, optimization parameters of eight degrees of freedom are adopted, so that the optimization algorithm has excellent adaptive capacity, the optimization precision is improved, and the method can be suitable for micro-siting optimization of wind power plants on flat terrains and on the sea.

The invention provides a vertical axis wind turbine blade airfoil, a wind wheel and a wind turbine. The airfoil has a high lift-drag ratio at a low wind speed, and the maximum thickness of the airfoil is 13.19% of the chord length of the airfoil; the maximum thickness position of the airfoil is 32.30% of the chord length of the airfoil; the maximum camber of the airfoil is 2.27% of the chord length of the airfoil; and the maximum camber position of the airfoil profile is 58.90% of the maximum camber position of the airfoil profile. The blade airfoil has a high lift coefficient and lift-drag ratio under the low Reynolds number and the large-range local attack angle, and therefore the aerodynamic performance of the small vertical axis wind turbine at the medium-low wind speed can be effectively improved. The wind energy utilization efficiency of the small vertical axis wind driven generator under the low wind speed can be improved, the generating capacity is improved, the generating efficiency of a unit is improved, and the requirements of comprehensive smart energy projects and distributed wind power with ground wind resources greatly affected by the surrounding environment are better met.