Research Progress in Field Grading Materials for New Power Systems

作者：Peng Han, Zheng Zhang, Li J, Geng Li, Hailong Zhang, Yurong Shi, Kehan Xu, Shiquan Guo, D Zhang, Chen Zhao · 发表于：Molecules · 年份：2026 · DOI：10.3390/molecules31122021 · 被引用次数：6 · 研究领域：High voltage insulation and dielectric phenomena、Dielectric materials and actuators、Power Transformer Diagnostics and Insulation

With the rapid construction of new power systems characterized by high renewable energy penetration, high power electronics integration, and high voltage levels, the insulation reliability of critical power equipment-including cable accessories, gas-insulated switchgear (GIS), and power electronic modules-faces unprecedented challenges. Field grading materials (FGM), as core functional media for adaptive electric field homogenization and insulation failure prevention, have emerged as a research hotspot spanning materials science, electrical engineering, and polymer engineering. Starting from the current research status of FGM, this review systematically summarizes filler optimization strategies, covering single fillers, hybrid fillers, trace co-fillers, and structural modification approaches. The applications of FGM in transmission cables, GIS, high-voltage electrical machines, and wide-bandgap power electronic modules are then elaborated in detail. Emphasis is placed on performance enhancement routes of FGM, particularly thermal conductivity improvement via constructing three-dimensional thermally conductive networks and intelligent early warning based on thermochromic materials. Finally, the existing bottlenecks of FGM are analyzed in terms of material stability, multi-physical field coupling adaptation, and engineering industrialization. Future development trends are prospected toward high-performance, multifunctional, intelligent, and engineering-oriented FGM. This review...