Influence of DC High-Voltage Electric Field and Temperature Field on Surface Electric Strength of Epoxy Insulating Material
In order to study the effect of DC electric field and temperature field on the surface electrical properties of epoxy insulating material, a DC high-voltage test device was used to measure the surface electric strength and glass transition temperature of the epoxy insulating material in DC high-voltage electric field and temperature field, and the surface charge accumulation was tested by capacitance probe method. The results show that the surface electric strength of the epoxy insulating material decreases rapidly with time by quadratic function, and the surface charge enhancs the effect of physical ageing. The research results can provide reference for evaluating the long-term operating characteristic of the epoxy insulating materials in DC high-voltage electric field and temperature field.
DC high-voltage electric fieldtemperature fieldepoxy insulating materialsurface electric strengthsurface charge
NETL
NSTL
万方数据
维普
