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Evaluation of the Insulation Performance of the Disconnector to Ground Based on MD
ID：68 View Protection：ATTENDEE Updated Time：2022-08-29 11:02:01 Hits：285 Oral Presentation

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Abstract
Epoxy resin materials are selected as the main material of disconnector to ground insulation. In this paper, the molecular model of epoxy resin was built based on molecular simulation technology, and the effects of different electric fields on the thermodynamic, mechanical and dielectric properties of epoxy resins were studied from the microscopic level. The results showed that the glass transition temperature decreased by 55K as electric field reached 0.06V/nm. Higher electric field led to the increase of the thermal conductivity, but the rate gradually decreased as electric field increased. The mechanical properties including Young's modulus, volume modulus and shear modulus decreased by 18.01%, 14.38% and 20.10% respectively when the electric field strength reached its maximum The epoxy resin under high electric field presented higher relative permittivity. At the same time, the increase of the electric field changed the microstructure of epoxy resin, the cohesive energy density decreased and the free volume fraction increased.
Keywords
EPOXY RESIN,MOLECULAR DYNAMICS,THERMODYNAMIC PROPERTIES,MECHANICAL PROPERTIES,DIELECTRIC PROPERTIES
Speaker
Lujia Wang
China University of Mining and Technology

Submission Author
Zhijie He State Grid Zhangzhou Electric Power Supply Company
Xiaohua Ma School of Electrical Engineering； China University of Mining and Technology
Shifang Yang North China Electric Power University；Hebei Provincial Key Laboratory of Power Equipment Security Defence
Lujia Wang China University of Mining and Technology
Ming Zhang School of Electrical Engineering；China University of Mining and Technology
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    Sep 25

    2022

    to

    Sep 29

    2022

  • Aug 15 2022

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  • Sep 10 2022

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  • Nov 10 2022

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  • Nov 30 2022

    Draft paper submission deadline

  • Nov 30 2022

    Final Paper Deadline

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