## 4 Wind Power Forecast
### Experiment Implementation  
In order to evaluate the performance of the proposed method in different aspects, a variety of tasks were defined based on the wind power data set, including prediction tasks of different horizons and univariate or multivariate predictions. In terms of horizon, similar to ETT data, in the case of a fixed sampling time, different output sequence lengths characterized different prediction times and also showed the difficulty of the task. The prediction lengths of WPh1 and WPh2 were divided into 6, 12, 24, and 48, and the corresponding prediction times were 1 h, 2 h, 4 h, and 8 h. In terms of variables, two forms of multivariate and univariate were used for evaluation. Univariate prediction takes the value of the generated wind power per second (A1 gr Gen Power for Process_1 sec), and multivariate prediction takes the values from all variables. \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline
**Index** & **Name** & **1 January** & **1 January** & **1 January** & **1 January** & **1 January** & **1 January** \\  & **2019 14:10** & **2019 14:20** & **2019 14:30** & **2019 14:40** & **2019 14:50** & **2019 15:00** \\ \hline
1 & Wind Speed (m/s) & 3.37 & 3.00 & * & 3.40 & 3.13 & 3.46 \\
2 & Generator Output Power (KW) & 0.0840 & 3.0268 & * & 21.6730 & 56.0637 & 104.1866 \\
3 & Pitch Angle (\({}^{\circ}\)) & 75.81 & 27.10 & * & 40.70 & \(-\)0.5 & \(-\)0.5 \\
4 & Nucleotide Position (\({}^{\circ}\)) & 246.39 & 165.04 & * & 162.67 & 164.58 & 158.285 \\
5 & Vane Direction (\({}^{\circ}\)) & \(-\)76.09 & \(-\)1.83 & * & 0.477 & 0.564 & \(-\)2.687 \\
6 & Cumulative Power Generation (KWh) & 7,856,887 & 7,856,887 & 7,856,887.5 & 7,856,894.0 & 7,856,904.3 \\
7 & Turbine Operation Mode & 9.45 & 13.56 & 6 & 13.13 & 20 & 20 \\
8 & Generator Speed (pm) & 25.06 & 575.92 & * & 464.83 & 1098.54 & 1099.91 \\
9 & Temperature Outside Nacelle (\({}^{\circ}\)C) & 21.60 & 21.60 & * & 21.60 & 21.30 & 20.80 \\
10 & Nacelle Y-direction Vibration & \(-\)0.01098 & \(-\)0.01108 & * & \(-\)0.01330 & \(-\)0.02163 & \(-\)0.01448 \\
11 & Nacelle Z-direction Vibration & & & & & & \\ Displacement (m) & \(-\)0.01098 & \(-\)0.01108 & * & \(-\)0.01331 & \(-\)0.02163 & \(-\)0.01448 \\
12 & Turbine brake Level & 27.625 & 17.085 & * & 20.57 & 0 & 0 \\ \hline \hline \end{tabular} Form description: * represents singular values.  
\end{table} 
Table 1: Illustration of the wind power data set including 12 variables. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Datasets** & **WPm1** & **WPm2** & **ETTh1** & **ETTh2** & **ETTm1** \\ \hline Variants & 12 & 12 & 7 & 7 & 7 \\ Total time steps & 52,710 & 52,710 & 17,420 & 17,420 & 69,680 \\ Time increment & 10 min & 10 min & 1 h & 1 h & 15 min \\ Start time & 1 January 2020 & 1 January 2020 & 1 July 2016 & 1 July 2016 & 1 July 2016 \\ End time & 31 December 2020 & 31 December 2020 & 26 June 2018 & 26 June 2018 & 26 June 2018 \\ Task type & Multi-step & Multi-step & Multi-step & Multi-step & Multi-step \\ \hline \hline \end{tabular}
\end{table} 
Table 2: The overall information of the 5 datasets. \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**Index** & **Name** & **1 April** & **1 April** & **1 April** & **1 April** & **1 April** & **1 April** \\  & **2018 0:00** & **2018 0:15** & **2018 0:30** & **2018 0:45** & **2018 1:00** & **2018 1:15** \\ \hline
1 & High Useful Load & 17.281 & 16.075 & 16,946 & 15.606 & 13.932 & 17.281 \\
2 & High Useless Load & 7.301 & 6.966 & 8.506 & 6.765 & 5.425 & 7.301 \\
3 & Middle Useful Load & 12.793 & 12.153 & 12.757 & 11.833 & 9.559 & 12.864 \\
4 & Middle Useless Load & 5.437 & 4.691 & 6.148 & 4.762 & 3.873 & 5.472 \\
5 & Low Useful Load & 4.356 & 4.264 & 4.264 & 4.203 & 4.295 & 4.295 \\
6 & Low Useless Load & 1.127 & 1.005 & 1.066 & 1.005 & 1.097 & 1.066 \\
7 & Oil Temperature & 9.004 & 9.215 & 9.286 & 9.215 & 9.215 & 9.075 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Illustration of the ETT data set including 7 variables.