TY - CONF A1 - Siebler, Daniel A1 - Rohwetter, Philipp A1 - Brusenbach, R. A1 - Lothongkam, Chaiyaporn A1 - Heidmann, G. A1 - Leistner, A. A1 - Plath, R. T1 - Sensitivity-enhanced detection of partial discharge in cable accessories using fluorescent polymer optical fibre-sensor T2 - POF 2014 - 23nd International conference on plastic optical fibers CY - Hiyoshi, Yokohama, Japan DA - 2014-10-08 KW - Polymer optical fibre KW - Partial discharge sensor KW - Fkuorescence KW - High voltage facility PY - 2014 SP - 1 EP - 5(?) AN - OPUS4-32531 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lothongkam, Chaiyaporn A1 - Siebler, Daniel A1 - Heidmann, G. A1 - Plath, R. A1 - Gockenbach, E. T1 - The influence of thermal aging on AC dielectric strength of transparent silicone rubbers for HV insulation N2 - Optical methods and monitoring systems for the PD detection in GIS, GIL and oil-immersed type transformers have been demonstrated. Very recently these methods have been extended to the detection of PDs in solid insulation materials of cable accessories. This novel application in high-voltage (HV) cable terminations consists of integrated fiber-optic sensor which requires transparent insulation materials. Therefore, transparent silicone rubbers are considered as replacement material for currently used opaque elastomeric insulation material in stress cones of HV cable accessories. For this purpose a preliminary study on the long-term stability of two commercially available fully transparent silicone rubbers was performed. Accelerated thermal aging tests were carried out for 4 hours up to 100 hours at 200 °C under a normal air atmosphere and normal atmospheric pressure. The impact of thermal aging on the AC dielectric strength of the silicone samples was investigated and additionally the optical transmittance was determined using UV-Vis spectrophotometer. The investigation indicated that the dielectric strength value of the silicone samples was seriously reduced for long-term exposures to elevated temperatures. In addition, the UV-visible transmittance of thermally aged silicone samples was also decreased. The influence of these phenomena must be taken into account for the design of HV insulation materials, particularly under extremely high temperature operating conditions. T2 - ISEIM 2014 - 7th International symposium on electrical insulating materials CY - Niigata City, Japan DA - 01.06.2014 KW - AC dielectric strength KW - Thermal aging KW - Silicone elastomer KW - HV insulation KW - Silicone rubbers KW - Optical transmittance KW - Rubber stress cone PY - 2014 DO - https://doi.org/10.1109/ISEIM.2014.6870790 SP - 346 EP - 349 PB - IEEE AN - OPUS4-32533 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rohwetter, Philipp A1 - Lothongkam, Chaiyaporn A1 - Habel, Wolfgang A1 - Heidmann, G. A1 - Pepper, D. T1 - Verbesserte faseroptisch-akustische Teilentladungssensoren für elastomere Isolierungen T2 - 6. ETG-Fachtagung - Diagnostik elektrischer Betriebsmittel 2014 CY - Berlin, Germany DA - 2014-11-25 PY - 2014 SN - 978-3-8007-3648-5 SN - 0341-3934 N1 - Serientitel: ETG-Fachbericht – Series title: ETG-Fachbericht VL - 144 SP - 1 EP - 6(?) PB - VDE Verlag GmbH AN - OPUS4-32873 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -