FDS Prediction of Transformer Oil-paper Insulation Under Non-uniform Aging Based on Finite Element Method

The frequency domain spectroscopy (FDS) of the transformer oil-paper insulation can be simulated by using the finite element method (FEM). However, the effect of nonuniform aging on calculation results has not been included in previous simulation models. Given this issue, a novel simulation model including non-uniform aging is reported. In the present work, the oil-paper samples with various aging degrees are prepared to develop the composite structure of the oil-paper system. Then, the simulation models are constructed based on FEM. The comparison of measured FDS and simulated FDS is used to verify the feasibility of the proposed model. Present findings prove that the proposed model could predict the FDS of the transformer oil-paper insulation under non-uniform aging, which might be utilized to analyze its dielectric response property under non-uniform aging conditions.