Print Email Facebook Twitter Design and Characterization of a Magnetic Loop Antenna for Partial Discharge Measurements in Gas Insulated Substations Title Design and Characterization of a Magnetic Loop Antenna for Partial Discharge Measurements in Gas Insulated Substations Author Mier Escurra, C. (TU Delft High Voltage Technology Group; TU Delft DC systems, Energy conversion & Storage) Mor, A. R. (TU Delft DC systems, Energy conversion & Storage; TU Delft High Voltage Technology Group) Vaessen, P.T.M. (TU Delft High Voltage Technology Group; TU Delft DC systems, Energy conversion & Storage) Date 2021 Abstract A recent investigation explored a new measuring concept used in partial discharges (PD) measurements in gas insulated substations (GIS), consisting of a magnetic loop antenna. The sensor's frequency response was characterized up to some tens of MHz. This paper proposes an improved version of the sensor with an extended bandwidth (BW) one order of magnitude higher: a resonance, attributed to a common mode current in the mounting hole, is identified and eliminated employing ferrite beads in the feeder cables. Moreover, this publication proposes an electric circuit model that fully covers the transverse electromagnetic mode (TEM) frequency range in GIS. The electric model is compared against experimental measurements using a 1 GHz bandwidth testbench, giving accurate results. Two contributions are achieved in this research: an improved magnetic loop antenna with extended bandwidth and an accurate electric circuit model. This publication paves the way for further research on time resolution and signal postprocessing techniques for magnetic loop antennas in GIS. Subject GISMagnetic loop antennaVHFbroadband antennaelectric circuithigh voltagepartial dischargestransfer function To reference this document use: http://resolver.tudelft.nl/uuid:86aeefd0-4de6-4b0e-8b1e-e954dcdcc47f DOI https://doi.org/10.1109/JSEN.2021.3089084 ISSN 1530-437X Source IEEE Sensors Journal, 21 (17), 18618-18625 Part of collection Institutional Repository Document type journal article Rights © 2021 C. Mier Escurra, A. R. Mor, P.T.M. Vaessen Files PDF Design_and_Characterizati ... ations.pdf 2.69 MB Close viewer /islandora/object/uuid:86aeefd0-4de6-4b0e-8b1e-e954dcdcc47f/datastream/OBJ/view