Power transformer
The dataset contains detailed information on a 100kVA transformer in ONAN cooling mode. The file consists of three PDF documents, which describe the transformer’s overall structure, core structure and size, winding structure and dimension, respectively.
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Design information of a real 50 MVA power transformer is available in this dataport. In addition, transient measurements of 4 different configurations are included.
This material has been shared with the authorization of Prof. Alvaro Portillo (Task force leader of JWG A2/C4.52) and the WEG transformer factory.
We express our deepest gratitude to Prof. Alvaro Portillo and WEG for allowing the use of this information for academic and research purposes.
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The inner winding of the power transformer is subjected to uniform compressive stress in the radial direction during the short circuit, which makes circular radial stability a crucial component of reliability. The radial stability evaluation system currently needs more state characteristic judgment quantity considering the manufacturing deviations(MD) and assembly gaps. Thus, there is a significant deviation in the transformer design, which seriously endangers the operation safety of the power system.
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When a power transformer is reconnected to the grid, if there is a large residual flux in the iron core, significant inrush current may occur and result in reclosing failure. Thus, accurate measurement of residual flux is necessary to avoid the generating of inrush current. This paper proposes a residual flux density measurement method for single-phase transformer core based on energy changes.
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