From Benchmarks to Production: Transferring Time Series Anomaly Detection Methods for Electricity Production Monitoring

2026-09-30

AI Summary

This study addresses the challenge of detecting intraday pattern deviations caused by data quality issues or operational anomalies in short-term electricity production forecasting. We propose TAMIS, a scalable and interpretable industrial-grade anomaly detection framework that automatically identifies anomalous days based on historical patterns and facilitates human-machine collaborative monitoring through daily report notifications. By integrating time series analysis with pattern deviation detection algorithms, TAMIS effectively optimizes the trade-off between accuracy and computational efficiency. Experimental results demonstrate that the proposed framework achieves the optimal precision-efficiency balance on real-world industrial data. Furthermore, an anonymized dataset is publicly released to provide benchmark support for future research in this domain.

Abstract

Accurate forecasting of electricity production is essential for maintaining the operational efficiency and strategic planning of energy utilities. In industrial settings, such forecasts are generated daily to ensure supply-demand balance and optimal management of production assets. However, the increasing complexity of modern power systems and data flows poses significant challenges for ensuring the reliability and consistency of these forecasts. This paper addresses the problem of anomaly detection in short-term production forecasts at EDF, formulated as identifying atypical intra-day patterns that may signal data quality issues or operational irregularities. We introduce TAMIS, a scalable and interpretable system that analyzes daily production time series to automatically detect anomalous days based on deviations from historical patterns learned from past data. Designed for human-in-the-loop workflows, TAMIS surfaces top-ranked anomalies through an automated daily newsletter, enabling efficient expert review and continuous monitoring. An extensive experimental evaluation on real-world industrial data demonstrates that TAMIS achieves the best accuracy-efficiency trade-off compared to baseline methods. To foster further research and reproducibility, we publicly release the anonymized application datasets used in our study.

Problem

• Time Series Anomaly Detection
• Electricity Production Forecasting
• Short-term Forecasting
• Intra-day Pattern

Innovation

• Time Series Anomaly Detection
• TAMIS
• Human-in-the-loop
• Electricity Production Forecasting
• Interpretable System