Abstract
Currently there is no standard FRA interpretation methods and not all the FRA practitioners are capable to model transformer windings using equivalent circuits. A low-frequency transformer model of a three-limb core-type 1000 MVA 400/275/13 kV auto-transformer is established to analyze the effects of transformer electric parameters on the FRA plots. The equivalent electrical circuit of the magnetic core is derived based on the Principle of Duality. Air-core inductance and winding capacitances are included in the model. FRA simulation results are validated by measurement results, the suitability of transformer model is discussed and the dominant factors in different frequency regions are concluded through sensitivity studies.
Sign-in/Register to access full text options 
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.
