Surface Flashover Phenomena and Contributory Parameters in Oil‐Pressboard Composite Insulation System Under DC Voltage
Year: 2025
Type: article
Abstract: ABSTRACT During the operation of HVDC transmission systems, the oil‐pressboard insulation of converter transformers is constantly subjected to combined AC and DC voltages. The DC voltage component can easily lead to charge accumulation and induce surface flashover. To investigate the development process of surface flashover in oil–pressboard insulation under DC voltage and its influencing factors, this paper establishes a two‐dimensional simulation model using finite element simulation software to study the electric field and charge distribution characteristics of oil–pressboard composite insulation systems. Using the established model, the paper analyses the influence of voltage, gap distance and electron mobility on the surface flashover development process.
Source: IET Nanodielectrics
DOI: 10.1049/nde2.70011
Authors: Kai Zhou, Bo Jiang, Zilu Wang, Li Chen, Yu Shen, Zihan Teng, Lei Jin, Meng Huang
Institutions: State Grid Hubei Electric Power Co., Ltd. (China), State Grid Hubei Electric Power Company Electric Power Research Institute, State Grid Corporation of China (China), North China Electric Power University, State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,270
OpenAlex ID: W4411295093