Charge accumulation and charge injection have been studied via the pulsed electroacoustic method on model cables prepared with different insulation and semicon materials,during application of high voltage direct curre...Charge accumulation and charge injection have been studied via the pulsed electroacoustic method on model cables prepared with different insulation and semicon materials,during application of high voltage direct current stress of up to electric field strength with 60 kV/mm and various temperatures or thermal gradient conditions.Insulation material technology concepts include crosslinked polyethylene with carbon black or crosslinked polyethylene with a coagent,and the comparative analysis under a variety of conditions provides insight into the benefits and potential limitations of each technology.Semiconductive shields utilized in the study include various carbon black loadings in polar copolymers with ethylene or blends of polar and non-polar polymers.Results with various semiconductive shields indicate that the properties of the semicon dominate the charge injection process regardless of insulation type.A comparison is made with other published work on charge injection and a discussion of charge injection as it relates to electrical stress and temperature is provided.展开更多
文摘Charge accumulation and charge injection have been studied via the pulsed electroacoustic method on model cables prepared with different insulation and semicon materials,during application of high voltage direct current stress of up to electric field strength with 60 kV/mm and various temperatures or thermal gradient conditions.Insulation material technology concepts include crosslinked polyethylene with carbon black or crosslinked polyethylene with a coagent,and the comparative analysis under a variety of conditions provides insight into the benefits and potential limitations of each technology.Semiconductive shields utilized in the study include various carbon black loadings in polar copolymers with ethylene or blends of polar and non-polar polymers.Results with various semiconductive shields indicate that the properties of the semicon dominate the charge injection process regardless of insulation type.A comparison is made with other published work on charge injection and a discussion of charge injection as it relates to electrical stress and temperature is provided.
