Jiaojiao Luo, Zhehao Jin, Heping Jin, Qian Li, Xu Ji, Yiyang Dai. Causal temporal graph attention network for fault diagnosis of chemical processes[J]. Chinese Journal of Chemical Engineering, 2024, 70(6): 20-32.
DOI:
Jiaojiao Luo, Zhehao Jin, Heping Jin, Qian Li, Xu Ji, Yiyang Dai. Causal temporal graph attention network for fault diagnosis of chemical processes[J]. Chinese Journal of Chemical Engineering, 2024, 70(6): 20-32.DOI: 10.1016/j.cjche.2024.01.019.
Causal temporal graph attention network for fault diagnosis of chemical processes
Fault detection and diagnosis (FDD) plays a significant role in ensuring the safety and stability of chemical processes. With the development of artificial intelligence (AI) and big data technologies
data-driven approaches with excellent performance are widely used for FDD in chemical processes. However
improved predictive accuracy has often been achieved through increased model complexity
which turns models into black-box methods and causes uncertainty regarding their decisions. In this study
a causal temporal graph attention network (CTGAN) is proposed for fault diagnosis of chemical processes. A chemical causal graph is built by causal inference to represent the propagation path of faults. The attention mechanism and chemical causal graph were combined to help us notice the key variables relating to fault fluctuations. Experiments in the Tennessee Eastman (TE) process and the green ammonia (GA) process showed that CTGAN achieved high performance and good explainability.
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