The paper presents the DC characterization of two elastomeric materials, a key step in the design of an HVDC accessory. DC conductivity, on the full temperature and electric field application range, is a critical characteristic integrated in simulation models. The investigation of space charge behaviour (using the pulsed electroacoustic method PEA) is complementary to DC conductivity measurements: space charges play an imporatnt role in charge carrier conduction and anticipate full size tests where field is locally enhanced due to charge accumulation in the material.
Maya MOURAD, Servane HALLER, Sophie IGLESIAS & Martin HENRIKSEN
Presented at Jicable HVDC’21