Print Email Facebook Twitter Balanced Magnetic Antenna for Partial Discharge Measurements in Gas-Insulated Substations Title Balanced Magnetic Antenna for Partial Discharge Measurements in Gas-Insulated Substations Author Mier Escurra, C. (TU Delft High Voltage Technology Group) Mor, A. R. (Universitat Politécnica de Valencia) Date 2022 Abstract Recent research has found that Magnetic loop antennas can detect partial discharges (PD) in gas-insulated substations (GIS); however, unbalanced shielded loop (UBSL) antennas are affected by electric field coupling. This research proposes a balanced shielded loop (BSL) adapted for GIS PD sensing with different designs. The frequency response and PD charge estimation for BSL and UBSL antennas are analyzed and compared in a matched test bench using a very-fast pulse calibrator. The results confirmed a better common-mode noise rejection and thus a better charge estimation by using the balanced magnetic antenna. An alternative BSL design improved the antenna's gain by a factor of two, and by using a balun transformer, the gain was increased by a factor of 4. The results showed the criticality in the shielded gap placement and the influence of the antenna's parasitic elements on the balun's frequency response. This paper shows an improvement in the noise rejection using magnetic antennas, which leads to the possibility of better PD sensing in GIS. Subject Partial dischargegas-insulated substationGISmagnetic antennacommon-mode noisebalanced shielded loop To reference this document use: http://resolver.tudelft.nl/uuid:dc1bc33e-793c-44cc-8b09-4c4a27ac77ea DOI https://doi.org/10.23919/CMD54214.2022.9991698 Publisher IEEE, Piscataway Embargo date 2023-07-02 ISBN 978-1-6654-7015-5 Source Proceedings of the 2022 9th International Conference on Condition Monitoring and Diagnosis (CMD) Event 2022 9th International Conference on Condition Monitoring and Diagnosis (CMD), 2022-11-13 → 2022-11-18, Kitakyushu, Japan Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type conference paper Rights © 2022 C. Mier Escurra, A. R. Mor Files PDF Balanced_Magnetic_Antenna ... ations.pdf 1 MB Close viewer /islandora/object/uuid:dc1bc33e-793c-44cc-8b09-4c4a27ac77ea/datastream/OBJ/view