Print Email Facebook Twitter Partial discharge detection on power equipment using a magneto-resistive sensor Title Partial discharge detection on power equipment using a magneto-resistive sensor Author Chen, Y. (TU Delft DC systems, Energy conversion & Storage; South China University of Technology) Castro Heredia, L.C. (TU Delft ESP LAB) Smit, J.J. (TU Delft EEMS - General; IWO (Inst. for Science & Development / Inst. voor Wetenschap & Ontwikkeling)) Ghaffarian Niasar, M. (TU Delft High Voltage Technology Group) Ross, Robert (TU Delft High Voltage Technology Group; IWO (Inst. for Science & Development / Inst. voor Wetenschap & Ontwikkeling)) Date 2023 Abstract Partial discharges (PD) detection is an effective diagnostic method to assess the insulation condition of electrical power equipment in the high-voltage laboratory or field tests. This paper presents a non-contacting PD detection method for power equipment. The method is based on an extra high-sensitivity adapted giant magneto-resistive (xMR) sensor that measures the magnetic field produced by the PD currents. Firstly, this paper describes the sensor’s relevant principle and signal conditioning circuit. Next, the sensor’s typical performance, including the frequency response and time-domain response to calibrator PD pulses, is measured and compared with our previous work. The results indicate that the xMR system’s bandwidth is improved to the MHz range. Finally, PD experiments are carried out and compared with measurements using a commercially available high-frequency current transformer (HFCT), which allows for verification of the coherence of the results concerning the PD pulses and phase-resolved PD (PRPD) patterns. The results show that PD in a cross-linked polyethylene (XLPE) cable or a gas-insulated system (GIS) with artificial discharging defects is successfully measured, demonstrating the sensitivity and performance of the xMR system for PD detection. Subject Cross-linked polyethylene (XLPE) cable(Electro)magnetic field measurementGiant magneto-resistive (GMR)Gas-insulated systems (GIS)High-frequency current transformers (HFCT)Partial discharges (PD)Sensors To reference this document use: http://resolver.tudelft.nl/uuid:9206ad65-b2b9-4b0a-9e14-78c7e2da9ae4 DOI https://doi.org/10.1016/j.ijepes.2023.109270 ISSN 0142-0615 Source International Journal of Electrical Power & Energy Systems, 152 Part of collection Institutional Repository Document type journal article Rights © 2023 Y. Chen, L.C. Castro Heredia, J.J. Smit, M. Ghaffarian Niasar, Robert Ross Files PDF 1_s2.0_S0142061523003277_main.pdf 10.11 MB Close viewer /islandora/object/uuid:9206ad65-b2b9-4b0a-9e14-78c7e2da9ae4/datastream/OBJ/view