Wind Farm Active Load Allocation Scheme Considering Wind Speed Fluctuations

Abstract

According to the structure and information flow of the active control system of large-scale wind farm, a load allocation scheme is proposed considering the wind speed fluctuations within the cluster, i.e. deciding the de-load depth of each turbine according to wind speed fluctuation when the farm is running under AGC mode, using wind turbine generator (WTG) de-load ability to reduce the impacts of wind speed fluctuations on the entire wind farm output. Use particle swarm optimization, prediction of WTG generation, wind speed fluctuation condition, wind scheduling instruction information to calculate the WTG de-load depth risk factors, and get the de-load power order distribution scheme. A simulation of 10 2MW WTGs shows that, load allocation scheme considering the wind speed fluctuations can reflect the relationship effectively between wind speed condition and output reliability, and promote the stability of wind farm output.