A confidence level estimation technique for reliable Data-Driven FRA interpretation in air-core winding faults

V. Nurmanova,Y. Akhmetov,M. Bagheri,A. Zollanvari, T. Phung

International Journal of Electrical Power & Energy Systems（2023）

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摘要

•Frequency response interpretation is challenging task in transformer fault diagnosis.•RLC model of the winding estimates distributed parameters for every turn and disk.•Winding disk space variation, radial displacement and tilt affect frequency response.•Transformer state classification and confidence level reporting has practical meaning.

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关键词

Confidence Level Estimation,Statistical Indicators (SIs),Transformer Frequency Response Analysis (FRA),Transformer RLC Modeling,Bolstered Technique

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