As installed wind capacity of the world increases, more and more issues are revealed
during operation. One of these issues is related to the stochastic nature of wind
speed that results in low accuracy of wind power forecasts. That is why energy storage
becomes increasingly important. In this paper, a simulation tool is introduced developed
to simulate the cooperation of a grid-connected wind farm and a generic energy storage
unit. The aim of the tool is to decrease the difference between forecasted and actual
wind power production. After the introduction of today's forecasting methods, the
rule-based simulation tool is detailed. The operation of the tool is demonstrated
using data of the Hungarian wind farms. Rated power and capacity is then calculated
for a generic energy storage unit that is able to keep the resulting output of Hungarian
wind farms and the belonging energy storage inside the ±50% range of the forecasted
power, 95% of the time.
