Turret-Electrode Antenna for UHF PD Measurement in Power Transformers - Part I

Introduction and Design

verfasst von

Hamid Jahangir, Asghar Akbari, Mohammad Akbari Azirani, Peter Werle, Janusz Szczechowski

Abstract

This contribution is the first part of a two-part series which deals with proposing a new type of UHF probe to overcome problems of UHF partial discharge (PD) measurement in power transformers. In the first part, the main obstacles of using the UHF technique in power transformers including problems of installation, unfeasibility of calibration, low sensitivity, etc. are addressed. Moreover, a new type of UHF sensor called the 'Turret-Electrode' antenna is presented to deal with the above obstacles. In the new antenna, the transformer turrets employed as the housing of open waveguide antenna (horn antenna with zero flare angle), while an electrode inside of the turret is designed to capture the electromagnetic (EM) waves produced by the PD signals inside of the transformer tank. The significant characteristics of the proposed antenna are investigated in detail and a prototype of the antenna is investigated via practical measurements. The results show the antenna parameters are quite appropriate for online PD measurement. The second part of the paper shows how the proposed antenna can resolve the problems pertaining to the UHF PD measurement in power transformers.

Organisationseinheit(en)

Fachgebiet Hochspannungstechnik und Asset Management (Schering-Institut)

Externe Organisation(en)

Niroo Research Institute Tehran
K.N. Toosi University of Technology (KNTU)
ABB Group

Typ

Artikel

Journal

IEEE Transactions on Dielectrics and Electrical Insulation

Band

27

Seiten

2113-2121

Anzahl der Seiten

9

ISSN

1070-9878

Publikationsdatum

14.12.2020

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Elektrotechnik und Elektronik

Elektronische Version(en)

https://doi.org/10.1109/TDEI.2020.008874 (Zugang: Geschlossen)