Sensitivity verification and determination of the best location of external UHF sensors for PD measurement in GIS
Sriyonoa,b,c, Putro W.A.a,b,c, Nishigouchi K.b, Khayam U.a, Suwarnoa, Kozako M.b, Hikita M.b, Urano K.d, Min C.e
a School of Electrical Engineering and Informatics, Institut Teknologi Bandung, Indonesia
b Department of Electrical Engineering, Kyushu Institute of Technology, Japan
c PT PLN (Persero), Indonesia
d SE Technology, Hongkong, Hong Kong
e SE Technology, Hongkong, Hong Kong
Abstract
Partial discharge detection is the most effective method to monitor and diagnose the insulation condition of high voltage apparatus. UHF method becomes more popular because of its higher S/N ratio. UHF sensors are the most important part of UHF method PD measurement. This paper deals with the PD measurement using several UHF sensors installed on 66 kV GIS model with needle protrusion on the conductor as its PD source. Sensitivity verification for external UHF sensors were examined based on CIGRÉ Task Force 15/33.03.05 to ensure that the sensors can fulfill the minimum requirement for PD measurement in GIS. Then, the effects of sensor position in the circumferential and effect of the sensor distance to PD source on PD magnitude were measured by the external UHF sensors. Result of this experiment are compared with simulation using FDTD method. Finally, based on this result, we recommend the best position of external UHF sensor applicated on GIS. © 2012 IEEE.
Author keywords
angle position,Gas insulated switchgears,High voltage apparatus,Insulation conditions,Minimum requirements,Partial discharge detection,Sensitivity verification,UHF sensor
Indexed keywords
angle position,gas-insulated switchgears,partial discharges,sensitivity verification,UHF sensor