The effect of wind turbines with low rotor power density on power fluctuations

Abstract

Increasing penetration of variable renewable energy, particularly wind power, necessitates improved grid integration strategies. One option that has received little attention to date is to adapt the design of the turbines in the direction of lower rotor power density. By simulating various turbine models with different specifications at selected locations, the effects on several performance indicators are investigated. Since no single suitable performance indicator exists, a comparison of widely used indicators is made, whereby the introduction of new parameters proves to be useful. Results show that lowering rotor power density through reduced generator output significantly mitigates power fluctuations in the 10-minute range. Considering an entire wind farm instead of an individual turbine, total annual production is slightly decreased, while the required connected load to the grid is substantially reduced.

Keywords

• Low rotor power density
• Power fluctuations
• Grid stability
• Technology shaping
• Technology assessment
• Wind energy