Wind Energy Reserve Evaluation Method
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Solution Overview
Problem
Current methods for estimating wind energy reserves are inadequate due to unclear definitions and the difficulty in accurately calculating theoretical wind energy reserves, as they fail to consider factors beyond solar radiation, such as land and water specific heat capacities, topography, and varying temperature and pressure, leading to inaccurate wind energy assessments.
Innovation Solution
A method for evaluating theoretical wind energy reserves involves selecting a target area, obtaining wind speed and air density data, dividing the area into small grids, interpolating data, and using specific formulas to calculate wind energy reserves per unit area and regionally, incorporating spatial height and geographic information systems for precise calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional methods based on solar radiation conversion are used to estimate wind energy, then the estimation process is simplified, but the accuracy is reduced due to ignoring local factors like specific heat capacities, topography, and temperature pressure variations
Solution Approach 1:
The patent changes the fundamental parameters used in wind energy estimation from global solar radiation conversion to local meteorological parameters (wind speed, air density, temperature, pressure). By incorporating these variable parameters that reflect actual local conditions, the method achieves higher accuracy while maintaining computational feasibility through standardized measurement protocols.
Solution Approach 2:
The patent applies local quality by emphasizing that wind energy characteristics vary significantly across different locations due to local factors such as terrain, water bodies, and atmospheric conditions. The method estimates wind energy reserves specifically for target areas based on local meteorological data rather than using uniform global conversion factors, thereby improving accuracy for each specific location.
2Ease of manufacture
If kinetic energy based formulas are used to calculate wind energy density, then the calculation is straightforward, but the ability to calculate regional wind energy reserves is severely limited
Solution Approach 1:
The patent segments the regional estimation process into multiple components: dividing the target area into grid cells, obtaining meteorological data for each grid, calculating wind energy density for each grid using kinetic energy formulas, and then aggregating the results. This segmentation allows the method to maintain the simplicity of kinetic energy calculations while extending capability to regional scales through systematic integration across multiple locations.
Solution Approach 2:
The patent transitions from two-dimensional surface area calculations to three-dimensional volumetric energy reserves by incorporating height as a critical dimension. The method calculates wind energy reserves within a specified height range above the surface, adding the vertical dimension to enable regional reserve estimation while building upon the foundational two-dimensional kinetic energy density calculations.
3Measurement precision
If wind speed data from multiple discrete points are used, then the accuracy of regional estimation is improved, but the complexity of data processing and interpolation increases
Solution Approach 1:
The patent introduces interpolation as an intermediary technique that bridges discrete measurement points and continuous regional estimation. By using interpolation methods to estimate wind speed and air density at grid centers based on surrounding measurement points, the system achieves accurate regional estimates without requiring direct measurements at every location, thereby managing data processing complexity while maintaining precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method provides a more accurate assessment of wind energy reserves by accounting for spatial variations in wind speed and air density, enabling a detailed evaluation of wind energy resources within specified height limits, resulting in reliable wind energy resource assessments.
Implementation Method 1
the commonly applied method for evaluating wind energy is based on the concept of a kinetic energy of wind, that is, wind power capacity
Data Source
AI summary
A method for evaluating theoretical potential of wind energy includes steps of: (1) selecting a target area for estimation of theoretical reserves of wind energy, and extracting a coordinate range of the target area; (2) presetting a spatial height of the target area d in step (1); (3) obtaining meteorological data of a wind speed and an air density of the target area in step (2); (4) according to the meteorological data obtained in step (3), calculating a theoretical wind reserves per unit area of the target area; (5) calculating an area size of the target area; (6) according to the meteorological data of the wind speed and the air density obtained in step (3), the spatial height of the target area obtained in step (2), and the area size of the target area obtained in step (5), calculating to obtain regional theoretical reserves of wind. Benefits of the present invention are providing a quantitative evaluation method for the estimation of the theoretical reserves of global wind energy, the quantitative indicators of wind power resources for wind energy policy formulation, and the selection of wind farm sites, which are of great significance for the development and utilization of wind resources and the formulation of policies.