Automatic Weight Redistribution Ensemble Model Based on Transfer Learning to Use in Leak Detection for the Power Industry

• Published in: Sensors (Basel, Switzerland) Switzerland), 2024-08, Vol.24 (15), p.4999
• Main Authors: Kwon, Sungsoo, Jeon, Seoyoung, Park, Tae-Jin, Bae, Ji-Hoon
• Format: Article
• Language: English
• Subjects: Accuracy; Acoustics; Aging; Artificial intelligence; Datasets; Deep learning; Efficiency; Electric power-plants; ensemble model; ensemble weight automatic redistribution; Fourier transforms; Leak detection; Machine learning; Neural networks; Noise; Power plants; Sensors; Signal processing; Support vector machines; Time series; transfer learning; Wavelet transforms
• ISSN: 1424-8220; 1424-8220
• DOI: 10.3390/s24154999

Creating an effective deep learning technique for accurately diagnosing leak signals across diverse environments is crucial for integrating artificial intelligence (AI) into the power plant industry. We propose an automatic weight redistribution ensemble model based on transfer learning (TL) for detecting leaks in diverse power plant environments, overcoming the challenges of site-specific AI methods. This innovative model processes time series acoustic data collected from multiple homogeneous sensors located at different positions into three-dimensional root-mean-square (RMS) and frequency volume features, enabling accurate leak detection. Utilizing a TL-driven, two-stage learning process, we first train residual-network-based models for each domain using these preprocessed features. Subsequently, these models are retrained in an ensemble for comprehensive leak detection across domains, with control weight ratios finely adjusted through a softmax score-based approach. The experiment results demonstrate that the proposed method effectively distinguishes low-level leaks and noise compared to existing techniques, even when the data available for model training are very limited.