Title :
Sensitivity check for on-line VHF/UHF PD detection on Transmission cables
Author :
Agoris, P.D. ; Meijer, S. ; Gulski, E. ; Smit, J.J. ; Hermans, T.J.W. ; Lamballais, L.
Author_Institution :
High Voltage Technol. & Manage., Delft Univ. of Technol.
Abstract :
The VHF/UHF PD detection technique is a non-intrusive method for power cable PD diagnostics. It incorporates a VHF/UHF current probe placed at the grounding of the cable and a spectrum analyzer connected to the probe. This technique however is very difficult to calibrate due to different factors affecting the frequency response of the measuring setup. In this paper the calibration procedure is described and discussed. Furthermore two examples of on-site calibration are presented, before the actual PD measurements take place. In these examples the sensitivity of the technique is also studied
Keywords :
UHF measurement; calibration; computerised monitoring; frequency response; insulation testing; partial discharge measurement; power cable insulation; power cable testing; power engineering computing; power transmission; sensitivity analysis; spectral analysers; current probe; frequency response; insulation defects; nonintrusive method; on-line UHF PD detection technique; on-line VHF PD detection technique; on-site calibration; partial discharge measurement; power cable; sensitivity; spectrum analyzer; transmission cables; Calibration; Circuit testing; Frequency measurement; Grounding; Partial discharges; Power cables; Probes; Spectral analysis; Trees - insulation; UHF measurements;
Conference_Titel :
Properties and applications of Dielectric Materials, 2006. 8th International Conference on
Conference_Location :
Bali
Print_ISBN :
1-4244-0189-5
Electronic_ISBN :
1-4244-0190-9
DOI :
10.1109/ICPADM.2006.284153
