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A magnetic loop antenna for partial discharge measurements on GIS

Journal Article (2019)
Author(s)

Armando Mor (TU Delft - DC systems, Energy conversion & Storage)

L. C. Castro (TU Delft - DC systems, Energy conversion & Storage)

Fabio Muñoz (TU Delft - DC systems, Energy conversion & Storage)

Research Group
DC systems, Energy conversion & Storage
Copyright
© 2019 A. R. Mor, L.C. Castro Heredia, F.A. Muñoz Muñoz
DOI related publication
https://doi.org/10.1016/j.ijepes.2019.105514
More Info
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Publication Year
2019
Language
English
Copyright
© 2019 A. R. Mor, L.C. Castro Heredia, F.A. Muñoz Muñoz
Research Group
DC systems, Energy conversion & Storage
Volume number
115 (2020)
Pages (from-to)
1-6
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Abstract

This paper presents a magnetic loop antenna for partial discharge (PD) measurements on gas insulated systems (GIS). The antenna is based on a single shielded loop inserted in the dielectric window of a GIS that measures the PD currents propagating in TEM mode. The paper describes the relevant parameters of the antenna and the antenna performance in combination with a transimpedance amplifier. A calibration method for charge estimation is presented along with laboratory experiments with free moving particle, surface and corona discharges in SF6 test cells. The results show the suitability of the magnetic antenna for PD detection and the charge evaluation performance. Under laboratory conditions, the antenna sensitivity is in the order of 1 pC at a few meters from the PD source.