DUAN Shufan, CHENG Li, LUO Hao, et al. Research on A Digital Twin Method for Gas Transport Process in Transformer Oil Based on Cyber-Physical Integration[J]. 2025, 53(6): 68-77.
DUAN Shufan, CHENG Li, LUO Hao, et al. Research on A Digital Twin Method for Gas Transport Process in Transformer Oil Based on Cyber-Physical Integration[J]. 2025, 53(6): 68-77. DOI: 10.20204/j.sp.2025.06009.
Research on A Digital Twin Method for Gas Transport Process in Transformer Oil Based on Cyber-Physical Integration
Due to the complexity of the internal structure of transformers,the distributed installation of sensors is impractical.Digital twin technology enables "virtual sensing" for transformers,supplementing data from physical sensors,thereby supporting smart grid digitalization for intelligent operation and maintenance.Focusing on dissolved gases in oil,a typical fault characteristic parameter,this study first constructs a digital twin model for gas transport in a simplified oil channel.Computational results reveal that the gas transport process comprises three stages,exhibiting dual characteristics of "center-periphery" and "vertical diffusion." Subsequently,a digital twin model under forced oil circulation conditions in an actual transformer is developed and experimentally validated,uncovering distinct transport mechanisms between main oil channels and stagnant oil zones,and confirming the model’s effectiveness.Finally,fault location traceability analysis is achieved through a cyber-physical integrated sensing approach.
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