Research on Anomaly Detection of Wind Farm SCADA Wind Speed Data

• Published in: Energies (Basel) Vol. 15; no. 16; p. 5869
• Main Authors: Wen, Wu, Liu, Yubao, Sun, Rongfu, Liu, Yuewei
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.08.2022
• Subjects: Accuracy; Air-turbines; Analysis; Anomalies; Buildings and facilities; correlation detection; Curve fitting; Data acquisition; Datasets; Deep learning; dynamic power curve detection; EEMD-BiLSTM; Electricity distribution; Green technology; Information management; Mean square errors; Mechanical properties; Methods; Neural networks; Quality control; Real time operation; SCADA data anomaly detection; Statistical analysis; Statistics; Supervisory control and data acquisition; System effectiveness; Time series; Turbines; Wind farms; Wind power; Wind speed; China; Mongolia
• ISSN: 1996-1073; 1996-1073
• DOI: 10.3390/en15165869

Supervisory control and data acquisition (SCADA) systems are critical for wind power grid integration and wind farm operation and maintenance. However, wind turbines are affected by regulation, severe weather factors, and mechanical failures, resulting in abnormal SCADA data that seriously affect the usage of SCADA systems. Thus, strict and effective data quality control of the SCADA data are crucial. The traditional anomaly detection methods based on either “power curve” or statistical evaluation cannot comprehensively detect abnormal data. In this study, a multi-approach based abnormal data detection method for SCADA wind speed data quality control is developed. It is mainly composed of the EEMD (Ensemble Empirical Mode Decomposition)-BiLSTM network model, wind speed correlation between adjacent wind turbines, and the deviation detection model based on dynamic power curve fitting. The proposed abnormal data detection method is tested on SCADA data from a real wind farm, and statistical analysis of the results verifies that this method can effectively detect abnormal SCADA wind data. The proposed method can be readily applied for real-time operation to support an effective use of SCADA data for wind turbine control and wind power prediction.