Title :
Characteristics of planar capacitor sensors with dielectric window for very fast transient overvoltage measurement in gas insulated switchgears
Author :
Ma, Guo-ming ; Li, Cheng-rong ; Chen, Wei-jiang ; Sun, Ze-lai ; Guo, Pan-hui ; Li, Zhi-bing
Author_Institution :
Beijing Key Lab. of High Voltage, NCEPU, Beijing, China
Abstract :
Planar capacitor sensors have been widely used for measuring of very fast transients overvoltage (VFTO). A dielectric window made of epoxy was proposed to reduce the time required for installation of the sensor. The thickness of the dielectric window was calculated to provide a SF6 pressure durability, and the frequency response of the dielectric window was investigated by pulse response experiment. Waveform measurement of switchgear operation demonstrated that the planar capacitor sensor with the dielectric window has a good bandwidth to make accurate measurement of VFTO.
Keywords :
SF6 insulation; capacitors; dielectric materials; electric sensing devices; frequency response; gas insulated switchgear; resins; SF6 pressure durability; VFTO; dielectric window thickness; epoxy; frequency response; gas insulated switchgears; planar capacitor sensors; pulse response experiment; very-fast-transient overvoltage measurement; waveform measurement; Capacitive sensors; Capacitors; Dielectric measurements; Gas insulation; Transient analysis; Dielectric window; GIS; Planar capacitor sensor; VFTO;
Conference_Titel :
Electrical Insulation (ISEI), Conference Record of the 2012 IEEE International Symposium on
Conference_Location :
San Juan, PR
Print_ISBN :
978-1-4673-0488-7
Electronic_ISBN :
1089-084X
DOI :
10.1109/ELINSL.2012.6251446
