Comprehensive Study on Magnetization Current Harmonics of Power Transformers due to GICs
2013 (English)Conference paper (Refereed)
This paper studies the effect of DC magnetization of power transformers on injected harmonics to power systems. DC magnetization due to geomagnetically induced currents can saturate the core of a power transformer during a half cycle. It causes a very asymmetric, high value magnetization current that contains large harmonic components.
In this work, by using a three-dimensional finite element model, the effect of core type and DC current level on generated harmonics is investigated.
The results could help power system engineers to choose the proper types of power transformers and improve the protection aspects of the network.
Place, publisher, year, edition, pages
Geomagnetically induced currents, GIC, Power transformers, saturation, magnetization current, harmonic, FEM
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-138884OAI: oai:DiVA.org:kth-138884DiVA: diva2:681895
International Conference on Power Systems Transients (IPST2013) in Vancouver, Canada July 18-20, 2013.
QC 201403312013-12-202013-12-202014-03-31Bibliographically approved