Decay-like Aging under Internal Discharge
This study investigates the aging mechanism of silicone rubber composite insulators under internal discharge, revealing the causes of HTV shed hardening and FRP core rod erosion, providing a basis for insulator design and condition assessment.
Gao, Chao · Peng, Yanan · Zhang, Shiyao · Zhang, Bo · Li, Wendong · Li, Lee
IEEE Access 2023
HTV shed surface hardened and chalked, with significantly increased hardness
FRP core rod surface eroded, epoxy resin decomposed
Internal discharge is the main cause of heating and deterioration of composite insulators
Long-term discharge leads to decay-like aging of core rod, eventually losing mechanical properties