Author

Zhi-Xin Chen

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Oct 2026

A wavelet elastic metric network for limited-data mechanical fault diagnosis of transformer on-load tap changers.

Reliable fault diagnosis of on-load tap changers (OLTCs), a critical component for transformer voltage regulation, is essential for ensuring the safe operation of power systems. However, the nonstationary characteristics of switching vibration signals and limited fault data restrict the effectiveness of conventional di...

Zhi-Xin Chen, Tong Zhao, Run-Ze Qi et al. · ISA transactions · 0 citations

Open access Sep 2026

Few-Shot Fault Diagnosis of On-Load Tap Changers Based on a Multi-Source Cross-Sensor Prototype Adaptation and Dual-Prototype Fusion Network

An on-load tap changer (OLTC) is a key electromechanical switching device for transformer on-load voltage regulation, and its mechanical condition is closely related to equipment reliability. Vibration signals are sensitive to sensor location, so the same fault may exhibit different responses at different locations, wh...

Zhi-Xin Chen, Chen-Lei Liu, Tian-Yu Duan et al. · Electronics · 0 citations

Open access Oct 2026

Semantic-Enhanced Fuzzy Prototypical Network for Few-Shot Fault Diagnosis of Transformer On-Load Tap Changers

On-load tap changers (OLTCs) are critical to reliable transformer operation, yet mechanical fault samples are difficult to obtain in practice, limiting the feature representation and diagnostic performance of conventional data-driven methods under limited-sample conditions. To address this issue, this paper proposes a...

Zhi-Xin Chen, Chen-Lei Liu, Tian-Yu Duan et al. · Applied Sciences · 0 citations