Research Progress on Modification of Epoxy Resin Materials for High-Voltage Electrical Equipment

The epoxy is a thermosetting resin, for the lack of toughness after cured ,a brief introduction of epoxy resin toughening technology research progress, detailed in the recent years a number of toughening epoxy resins new methods, including toughened thermoplastic resin, IPN toughening, core-shell particle toughening, thermotropic liquid crystalline toughness, rigid polymer toughening, nano-particle toughening and so on. At last, the paper provided an overview of the progress of epoxy toughening modification technology and its future prospects.

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Design of Partial Discharge Detection System for High Voltage Electrical Equipment Based on Intelligent Video Detection Algorithm

Lecture Notes in Electrical Engineering - Innovative Computing ◽

10.1007/978-981-16-4258-6_17 ◽

2022 ◽

pp. 133-139

Author(s):

Liang Qi ◽

Bo Wang ◽

Yapeng Zhang ◽

Qingping Zhang ◽

Wenwei Zhu

Keyword(s):

High Voltage ◽

Detection System ◽

Partial Discharge ◽

Electrical Equipment ◽

Detection Algorithm ◽

Video Detection ◽

Discharge Detection

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X-ray testing of high voltage oil-filled electrical equipment: Physical background and technical requirements

IEEE Transactions on Dielectrics and Electrical Insulation ◽

10.1109/tdei.2019.008363 ◽

2020 ◽

Vol 27 (1) ◽

pp. 172-180

Author(s):

L. A. Darian ◽

P. V. Golubev ◽

R. M. Obraztsov ◽

E. P. Grabchak ◽

R. R. Gimaev ◽

...

Keyword(s):

High Voltage ◽

Electrical Equipment ◽

X Ray ◽

Technical Requirements ◽

Physical Background

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Study on Improving Interface Performance of HVDC Composite Insulators by Plasma Etching

Coatings ◽

10.3390/coatings10111036 ◽

2020 ◽

Vol 10 (11) ◽

pp. 1036

Author(s):

Yunqi Xing ◽

Yixuan Wang ◽

Jiakai Chi ◽

Haoliang Liu ◽

Jin Li

Keyword(s):

Epoxy Resin ◽

Leakage Current ◽

Plasma Etching ◽

High Voltage ◽

Direct Current ◽

Composite Insulator ◽

High Voltage Direct Current ◽

Bonding Performance ◽

Static Contact ◽

Core Rod

High-voltage direct-current composite insulators are faced with various challenges during operation, such as creeping discharge, umbrella skirt damage, abnormal heating and insulator breakage. Among them, the aging of the interface between the core rod and the sheath is one of the important causes of composite insulator failure. In order to improve the electrical resistance of the composite insulator interface, this study uses plasma etching to modify the surface of the glass-fiber-reinforced epoxy resin plastic to prepare the high-voltage direct-current composite insulator core rod–sheath samples. By analyzing the surface morphology of the epoxy resin, static contact angle and surface charge transfer characteristics, the control mechanism of the plasma etching treatment on the interface bonding performance and leakage current of composite insulator core rod–sheath samples were studied. The results show that proper etching time treatment can improve the trap energy level distribution and microstructure of epoxy resin and increase the discharge voltage along the surface; chemical bonding plasma etching can improve the interfacial bonding performance of core rod–sheath samples sheaths, reduce the leakage current of composite insulator core rod–sheath samples sheath specimens and improve their interfacial performance.

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