Partial discharges and surface potential at fissure-like solid-solid interface

Liu, Q.; Kai, Yoshinobu; Nagao, Masayuki; Kosaki, M.

doi:10.1109/iseim.1998.741823

Proceedings of 1998 International Symposium on Electrical Insulating Materials. 1998 Asian International Conference on Dielectr

DOI: 10.1109/iseim.1998.741823

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Partial discharges and surface potential at fissure-like solid-solid interface

Q. Liu¹,

Yoshinobu Kai²,

Masayuki Nagao³

et al.

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Effect of toughened epoxy resin on partial discharge at solid–solid interface

Zhang

et al. 2017

Plasma Sci. Technol.

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A series of solid-solid interfaces, consisting of ceramic-epoxy resin interface samples with a tip-plate electrode, were investigated by performing partial discharge tests and real-timeelectrical tree observations. A toughening agent was added to the epoxy resin at different ratios for comparison. The impact strength, differential scanning calorimetry (DSC) and dielectric properties of the cured compositions and ceramic were tested. The electric field strength at the tip was calculated based on Maxwell's theory. The test results show that the addition of a toughener can improve the impact strength of epoxy resin but it decreases the partial discharge inception voltage (PDIV) of the interface sample. At the same time, toughening leads to complex branches of the electrical tree. The simulation result suggests that this reduction of the PDIV cannot be explained by a change of permittivity due to the addition of a toughening agent. The microstructural change caused by toughening was considered to be the key factor for lower PDIV and complex electrical tree branches.

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Effect of toughened epoxy resin on partial discharge at solid–solid interface

Zhang

et al. 2017

Plasma Sci. Technol.

View full text Add to dashboard Cite

show abstract

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Partial discharges and surface potential at fissure-like solid-solid interface

Cited by 1 publication

References 2 publications

Effect of toughened epoxy resin on partial discharge at solid–solid interface

Effect of toughened epoxy resin on partial discharge at solid–solid interface

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