Analysis of the Electromagnetic Field on Cable Systems with Insulation Made of Polymer Materials

When the EMF passes through various materials filling the inclusion, the absorption of wave energy by these substances is observed. Based on the simulation carried out using the COMSOL program, an EMF analysis was performed at the interface of dielectric media between spherical micro-inclusion and the main insulation. It is shown that in solid dielectrics, conductors, EMF absorption is significant. If a wave meets any conductor, then most of its energy is absorbed by it. The presence of heterogeneities (defects) in the insulation at the insulation - inhomogeneity interface causes jumps in the electric field strength ε1/ε2, ε
2
/ε3. The simulation and analysis of the electric field strength distribution in the defect region were carried out and it was found that with increasing Sdef, the amplitude of the magnetic induction surge (B) at the first boundary of the defect increases. With increasing Sdef. the depth of the induction failure (B) increases. However, while maintaining the overall picture, the values of dips with different types of filling inclusions are different: – the greatest gradient is observed when filled with water, the smallest when filled with carbon plus cross-linked polyethylene (C + XLPE). Thus, it can be a diagnostic parameter of the quality of the insulation of the PC. The results of the work are of interest in solving a complex of problems related to various aspects of electromagnetic compatibility and reliability of functioning of electric power systems.