A method and system for optimal arrangement of wind turbines in an offshore wind farm

Abstract

The invention discloses a method and system for optimizing the arrangement of wind turbines in an offshore wind farm, belonging to the technical field of offshore wind power generation, including: S1, which evenly divides the wind farm area into n×n grids, and each wind turbine is arranged at the intersection of the grids S2, randomly generate M groups of arrangement schemes; S3, set the power generation of wind turbines whose distance is less than the distance threshold in each group of arrangement schemes to zero, and calculate the wake efficiency of wind farms corresponding to each set of arrangement schemes, as fitness value; if there is a fitness value greater than the wake efficiency threshold, take the arrangement scheme corresponding to the maximum value of each fitness value as the best arrangement scheme; otherwise, execute S4; S4, if the number of cycles is less than the cycle threshold, Then execute S5; otherwise, execute S6; S5, randomly copy M groups of arrangement schemes from M groups of arrangement schemes, perform crossover and mutation operations, and jump to S3; S6, set n=2n, and jump to S1. It can greatly improve the power generation efficiency of offshore wind farms.

Description

technical field [0001] The invention belongs to the technical field of offshore wind power generation, and more specifically relates to a method and system for optimizing the arrangement of wind turbines in an offshore wind farm. Background technique [0002] With the promotion of online bidding policies in the wind power industry, the need to increase revenue and reduce costs is becoming more and more urgent. In the past, most wind turbine layouts were manually arranged, and subjective factors were greatly affected, making it difficult to achieve true optimization of machine position layout. The intelligent algorithm is introduced into the arrangement of wind turbines to automatically search for the optimal layout of wind turbines, which can make full use of wind farm resources and improve economic benefits. [0003] In the prior art, in order to avoid the situation that the fan distances are too close in the optimization process using the random search algorithm, the grid ...

AI Technical Summary

Problems solved by technology

However, due to the large grid spacing, the number of wind turbine location candidate points is not enough to simulate all possible locations of wind turbines, and the error of using grid intersection points to simulate wind turbine positions is too large. When the field is optimized, the wake efficiency of the arrangement result is difficult to meet the construction requirements

By improving the grid precision of wind farms, the degree of freedom of wind turbine layout will be increased, and the wake loss can be greatly reduced; however, there is no effective solution to the wake effect problem caused by too close distance between wind turbines in high-precision grids

Images