Abstract
Wind power capability has increased drastically in the last decade worldwide, with its strong growth expected to continue over the next several decades. Wind power output fluctuates according to weather conditions. Accordingly, the more wind power capability grows, the larger the impact of fluctuations in wind power output becomes in electric power systems. To mitigate fluctuations, control of wind power output is one of the most cost-effective options, because some control functions are already included in the latest wind turbine generators. However, such control involves inevitably energy loss, where there is a tradeoff between energy loss and the degree of control. Using high-resolution data of wind power outputs in three balancing areas in Japan, we mitigate very-short-term and short-term fluctuations using these control capabilities. We also discuss the energy loss.
