Evaluation of impact of energy storage on Effective Load Carrying Capability of wind energy

Wind energy is variable and intermittent in nature. The variations in wind speed results in a stochastic output for wind turbines. Therefore, the peak generation of wind farms and peak load demand typically do not occur at the same time. This paper studies a wind farm integrated with an energy storage device at turbine level in order to shift the wind power generation to the peak demand periods. A model of system including practical utility level battery integrated with wind farm is developed and presented. In order to measure the effect of this integration, actual profiles of load, wind energy, and other power sources is studied and the Effective Load Carrying Capability (ELCC) for wind energy, after and before adding the battery, is calculated. Results show that the battery can make significant improvements in the ELCC of wind energy.