An End-to-End Deep Learning Method for Voltage Sag Classification†

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Abstract

Power quality disturbances (PQD) have a negative impact on power quality-sensitive equipment, often resulting in great financial losses. To prevent these losses, besides detecting a PQD on time, it is important to classify it, so that appropriate recovery procedures are employed. The majority of research employs machine learning model PQD classifiers on manually extracted features from simulated or real-world signals. This paper presents an end-to-end approach that circumvents the manual feature extraction and uses signals generated from mathematical voltage sag type formulas. We developed a configurable voltage sag generator that was used to form training and validation datasets. Based on the synthetic three-phase voltage signals, we trained several end-to-end LSTM classifiers that classify voltage sags according to ABC classification. The best-performing model achieved an accuracy of over 90% in the real-world dataset.

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Turović, R., Dragan, D., Gojić, G., Petrović, V. B., Gajić, D. B., Stanisavljević, A. M., & Katić, V. A. (2022). An End-to-End Deep Learning Method for Voltage Sag Classification†. Energies, 15(8). https://doi.org/10.3390/en15082898

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