报告时间：2025年8月25日（星期一）10:30-11:30
报告地点：逸夫楼1005室
报 告 人：Alexander Fröhlich
工作单位：奥地利格拉茨技术大学
举办单位：电气与自动化工程学院
报告简介：
The behaviour of power transformers under DC bias, particularly resulting from Geomagnetically Induced Currents (GICs) during solar storms, is a critical area of research in power system stability. DC bias can cause half-cycle saturation of the transformer core, resulting in increased magnetizing currents, excessive reactive power demand, elevated losses, heating, and possible damage to transformer components. This talk introduces accurate modelling and measurement of GICs in the grid, assessing transformer vulnerability, and developing mitigation strategies, such as improved grounding configurations, different grid configurations, and implementing real-time monitoring.
报告人简介：
Alexander Fröhlich received the Bachelor's degree in Electrical Engineering from Graz University of Technology between 2014 and 2021. He obtained the Master's degree in Electrical Engineering from Graz University of Technology from 2021 to 2023 and is currently pursuing the doctoral degree in Technical Sciences with a focus on Electrical Engineering at Graz University of Technology. He has worked as a study researcher assistant at the Institute of Electrical Power Systems, Graz University of Technology from 2021 to 2023 and has been a researcher there since April 2023. His research interests include power transformers and geomagnetically induced currents.