Richang Xian

Evidence-hierarchy audit of public DGA benchmarks for trustworthy AI-assisted transformer assessment

Dissolved gas analysis (DGA) is widely used for condition assessment of oil-immersed power transformers, but public-data artificial intelligence (AI) studies can overstate evidential reliability when labels are heterogeneous, samples overlap across benchmarks, or random splits ig...

Influence of glaze-iced insulators on force and motion characteristics of charged water droplets under DC voltage and natural icing test validation

Glaze ice exhibits high density and strong adhesion, readily forming ice bridges that impair insulator performance. While previous studies have primarily concentrated on macroscopic icing behavior under AC or DC fields, the role of icicles in affecting the motion of charged water...