Work

Significant Suppression of High Electric Field Regions in XLPE via Voltage Stabilisers

Year: 2025

Type: article

Abstract: ABSTRACT Dielectric degradation typically originates from local defects. The resulting electric field concentration accelerates defect growth. Suppressing field distortion arising from such local weaknesses has long been a major challenge in electrical insulation. In this work, we incorporated the voltage stabiliser anthrone (ET) into cross‐linked polyethylene (XLPE). This design enables field‐driven adaptive migration and charge trapping, thereby dynamically regulating local electric fields. Space charge analysis reveals that ET captures charge and creates a reverse electric field. This process inhibits charge injection and transport, significantly reduces internal field distortion and results in a negative electric field coefficient effect. Notably, at 110 kV/mm the distortion ratio decreases from 118.6% in XLPE to only 0.05% in ET/XLPE, a reduction by more than 2000 times. These findings highlight the critical role of voltage stabilisers in enhancing dielectric reliability.

Source: High Voltage

DOI: 10.1049/hve2.70133

Authors: Ke Li, Luming Zhou, Guimin Jiang, Yunxiao Zhang, Yuanxiang Zhou

Institutions: Xinjiang University, University of Southampton, State Key Laboratory of Power System and Generation Equipment, Tsinghua University, Fuzhou University

Language: English

Topic: High voltage insulation and dielectric phenomena

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,200

Funders: National Natural Science Foundation of China, Tsinghua University