Author

Zhong-Qiang Zhan

3 papers indexed here

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Open access 2026

Pulse-Type interference suppression based on an improved wavelet threshold for wideband partial discharge detection in transformers

Pulse-type interference at high-voltage (HV) and ultra-high voltage (UHV) transformer sites severely limits the effectiveness of partial discharge (PD) detection, as conventional pulse current measurement below 1 MHz leaves 12-pulse ripple, corona, and electronic switching pulses overlapping with genuine PD signals in...

Guang-Hu Xu, Qing-Chuan Zhang, Gang Chen et al. · Research on Engineering Stru... · 0 citations

Open access 2026

Dual-sensor correlation for wideband HFCT partial discharge detection and interference suppression in transformers

On-site partial discharge (PD) detection of power transformers is challenged by strong electromagnetic interferences, including converter pulsation, corona, and power-side harmonics, whose spectra overlap with PD signals. A dual-channel synchronous detection system based on self-developed wideband high-frequency curren...

Guang-Hu Xu, Zhong-Qiang Zhan, Dan-Dong He et al. · Research on Engineering Stru... · 0 citations

Open access Sep 2026

Hierarchical Detection and D-S Evidence Fusion-Based Insulation Diagnosis of Oil-Immersed Current Transformers

Partial discharge monitoring of oil-immersed current transformers (CTs) is susceptible to electromagnetic interference, and single-parameter detection is biased due to incomplete information. To further improve the safety of the oil-immersed CT, an insulation diagnosis method combining hierarchical detection with Demps...

Qing-Chuan Zhang, Guang-Hu Xu, Zhong-Qiang Zhan et al. · Symmetry · 0 citations