Wind power forecasting - Wind Power Integration: Connection and System Operational Aspects - page 233

Figure 6.12 Directionally dependent wind farm power curve

Time t

120

forecast at t-18
forecast at t-12
forecast at t-6
forecast at t
measured

100

80

60

40

20

0

25 26 27 28 29

Time (days)

Figure 6.13 Wind power forecasts for look-ahead times of 0-48 hours provided at

times t, t-6, t-12 and t-18 hours

The output of the wind power forecasting model is the wind power forecast,
which typically provides hourly predictions for look-ahead times up to 48 hours.
The forecasts can be provided for specific wind farms, for a portfolio of wind farms
or for all wind farms in a particular region or supply area. In Figure 6.13, four sets
of successive wind power forecasts for a group of wind farms (at t , t -6, t -12 and
t -18 hours) are overlaid, together with the measured power. The forecasts are for
look-ahead times in the range 0-48 hours.