23 / 2022-03-01 12:38:40

Investigation of Electrical Properties of TiO2/EPDM Composites with Different Morphologies

TiO2; Different morphologies; EPDM Rubber; Electrical properties；Simulation

IEEE ICHVE 2022 / 1-PAGE ABSTRACT

Investigation of Electrical Properties of TiO₂/EPDM Composites with Different Morphologies

Xubin Wang^{1, 2}, Tiandong Zhang^{1, 2}, Changhai Zhang^{1, 2}, Qingguo Chi<sup>1, 2 

1</sup>Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, PR China

²School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, PR China

qgchi@hotmail.com



Purpose/Aim

High-voltage direct current (HVDC) cable accessories are the weakest part of the cable operation and have the highest failure rate in cable operation due to the uneven distribution of electric field. To overcome this phenomenon, this work proposes a method to prepare composites with excellent nonlinear electrical conductivity.

Experimental/Modeling methods

In this work, TiO₂ nanofibers with micron-nano size are prepared via electrospinning, and EPDM-based composites with TiO₂ nanoparticles and TiO₂ nanofibers are prepared. The effect of TiO₂ with different morphologies on the electrical properties of the composites are comparatively analyzed and systematically investigated.

Results/discussion

The results show that the TiO₂ nanofibers/EPDM exhibit excellent nonlinear electrical conductivity properties compared with TiO₂ nanoparticles/EPDM composites. The simulation results show that the TiO₂ nanofibers/EPDM can better homogenize the electric field, reduce the electric field at the end of the shielding tube, and improve the reliability of the safe operation of cable accessories.

Conclusions

This work provides an effective way to solve the problem of the electric field distribution in cable accessory.