Comparison between HEM and EDM in reflecting moisture information on oil-paper insulation

In the construction of the oil-paper insulation equivalent model, the identification of model parameters plays a key role in understanding the characteristics of oil-paper insulation medium, and the moisture content and aging state information contained in the dielectric response results can be effectively reflected by the change of model parameters, and the consistency between FDS curve and measured value curve after model parameter reconstruction is the standard for measuring whether the model parameters are true and effective. In order to prove that HEM can truly reflect the complex dielectric response of oil-paper insulation system compared with EDM, this paper identifies the parameters of the two models based on FDS data in different test environments, focusing on the comparison of the agreement between the measured curves and the calculated curves of the two models.