A magnetic loop antenna for partial discharge measurements on GIS

Journal article (2019)

Authors

A. R. Mor DC systems, Energy conversion & Storage - EEMCS
L.C. Castro Heredia DC systems, Energy conversion & Storage - EEMCS
F.A. Muñoz Muñoz DC systems, Energy conversion & Storage - EEMCS
Research Group
DC systems, Energy conversion & Storage (EEMCS) (TU Delft)
Copyright: © 2019 A. R. Mor, L.C. Castro Heredia, F.A. Muñoz Muñoz
DOI
help_outline
https://doi.org/10.1016/j.ijepes.2019.105514
GIS Partial discharge Magnetic loop antenna Charge calibration Magnetic sensor
More Info
expand_more

Published Date

28-08-2019

Language

English

Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

DC systems, Energy conversion & Storage

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.