Possibility of PD calibration on power transformers using UHF probes

verfasst von
Hamid Jahangir, Asghar Akbari Azirani, Peter Werle, Janusz Szczechowski
Abstract

Partial Discharge (PD) measurement on power transformers using Ultra-High Frequency (UHF) techniques has great advantages on IEC method including possibility of online application, localization and greater immunity against external noises. But lacking a method to calibrate or at least determine sensitivity of UHF method for power transformers is the main disadvantage of this method. Thus severity of PD detected by UHF method cannot be determined. In this paper, main parameters that affect the relation between severity of PD, defined by apparent charge of IEC method, and received signals by UHF method are investigated in detail using laboratory measurements and simulation tools. The purpose of paper is to investigate possibility of PD calibration using UHF probes by evaluation of amount of calibration error caused by each of the above parameters. Then, a method to estimate the minimum possible ratio between UHF signal and corresponding apparent charge is proposed based on the results obtained within investigation of calibration parameters.

Organisationseinheit(en)
Fachgebiet Hochspannungstechnik und Asset Management (Schering-Institut)
Externe Organisation(en)
K.N. Toosi University of Technology
ABB Group
Typ
Artikel
Journal
IEEE Transactions on Dielectrics and Electrical Insulation
Band
24
Seiten
2968-2976
Anzahl der Seiten
9
ISSN
1070-9878
Publikationsdatum
10.2017
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Elektrotechnik und Elektronik
Elektronische Version(en)
https://doi.org/10.1109/TDEI.2017.006374 (Zugang: Geschlossen)