Wind Power Forecasting Dataset

1.     Data Source: SCADA (Supervisory Control and Data Acquisition) monitoring data from turbines in two wind farms (Wind Farm 1 has 22 wind turbines, Wind Farm 2 has 19 wind turbines); the data is from 2019 and sampled every 10 minutes per turbine.

2.     Data Dimensions: temporal, meteorological, and turbine internal operating status.

3.     Data Preprocessing

ž   All negative values of active power have been set to zero.

ž   The normalization logic for continuous variables is the min-max normalization with respect to each turbine.

4.     Temporal discontinuity exists due to missing records.

3. Data Variable Definitions

No.

Variable Name

Variable Explanation

1

Wind Turbine Name

Unique identifier for a wind turbine, used to distinguish different units

2

Time

Exact timestamp of data recording, serving as the time reference for turbine operation data

3

Instantaneous Wind Speed (m/s)

Real-time wind speed at the sampling moment, reflecting instantaneous wind speed changes

4

30-Second Average Wind Speed (m/s)

Arithmetic mean of wind speed over 30 consecutive seconds, reducing fluctuation effects

5

Wind Direction Angle (°)

Angle between instantaneous wind direction and due north

6

60-Second Average Wind Direction Angle (°)

Average wind direction angle over 60 seconds, for stable main wind direction judgment

7

Daily Availability (%)

Percentage of time the turbine operated normally on a given day, reflecting availability

8

Power Factor

Actual operating power factor of the turbine, measuring electrical energy efficiency

9

Power Factor Setpoint

Target power factor preset by the control system for turbine operation regulation

10

Nacelle Position (°)

Azimuth angle of the turbine nacelle relative to due north

11

Cable Twist Position (°)

Cable torsion angle caused by nacelle rotation, used to assess cable twisting risk

12

Rotor Speed (rpm)

Rotational speed of the turbine rotor, in revolutions per minute

13

Generator Speed (rpm)

Rotational speed of the generator rotor, indicating power generation status

14

Hydraulic System Pressure (bar)

Internal pressure of the turbine hydraulic system, supporting braking and pitch control

15

Pitch Angle (°)

Angle between turbine blades and the rotor plane, used to adjust wind capture and power

16

Nacelle Vibration Sensor X (g)

Vibration acceleration along the nacelle X-axis, in gravitational acceleration g

17

Nacelle Vibration Sensor Y (g)

Vibration acceleration along the nacelle Y-axis, for unit vibration monitoring

18

Effective Value of Nacelle Vibration (g)

RMS vibration acceleration of the nacelle, evaluating overall vibration level

19

Wind Turbine Status

Current operating condition, e.g., shutdown, power generation, fault, standby

20

Yaw Activation Status

Indicator of whether the yaw system is active to align the nacelle with wind direction

21

Service Mode Status

Indicator of whether the turbine is in maintenance/overhaul mode

22

Active Power (kW)

Actual active electrical power output by the turbine (target prediction variable)