Attenuation Characteristics and Time Delay of PD Electromagnetic Wave Propagation in GIS Systems

Modeling of electromagnetic wave propagation inside a gas-insulated switchgear structure can be helpful for understanding and improving the utilization partial discharge detection by providing information to help determine more optimal positioning ultra-high frequency sensors. This paper studies effect insulating spacers, L- T-type structures on simulating time dependent behavior these arrangements within busbar geometry. The attenuation characteristics delays produced are presented. Emphasis is placed comparison delay between different observation points along both before after 90° bends formed structures. Moreover, comparative analysis radial electric field at tank its rate change with also conducted. demonstrates that if location sensor chosen appropriately based knowledge physical structures, effects introduced could reduced.