Insulation Health Condition Assessment for Power Equipment by Applying the High-Voltage Dielectric Spectroscopy

High‑Voltage Dielectric Spectroscopy (HVDS) is a key nondestructive method for checking the condition of insulation in high‑voltage equipment such as transformers, cables, and bushings. This research looks at how dielectric materials respond over a wide range of frequencies and voltage levels, and how their microstructure changes as they age in solid‑liquid insulation systems. The proposed framework organizes how to model dielectric relaxation and how to analyze polarization and conduction when strong electric fields are present. It also focuses on real‑world measurement issues, like reducing electromagnetic interference, compensating for temperature effects, and linking physical models to digital monitoring tools. The approach includes using multi‑physics simulation software and machine‑learning algorithms to improve

diagnostic accuracy and to automate health‑state classification. By building solid correlation models that link dielectric measurements to actual degradation, this work supports the development of advanced condition‑monitoring systems and helps move from scheduled maintenance to reliable condition‑based asset management in modern power grids.

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