Abstract
Transformer magnetizing inrush current can lead false-actions of differential protection and, reduce transformer lifetime, and send higher harmonics to power grid. The paper deals with the harmful problem of magnetizing inrush current for switch-on unloaded transformer. We derive the mathematical model of magnetizing inrush current. Based the analysis of relation among magnetizing inrush current, residual magnetism, switch angle, magnetizing impedance, the current interrupting angle and its magnitude, we presents the approach of reduction the magnetizing inrush current. By properly control the voltage initial angle for switch-on break, the primary winding current go into steady without transition. Simulation results indicate the validity and feasibility of the proposed algorithm. It is necessary to popularize the proposed approach in switch-on unload transformer.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
