Fault detection of switchgear based on partial discharge gas analysis
Year: 2025
Type: conference-paper
Abstract: This study investigates the latent partial discharge phenomena in air-insulated switchgear. By analyzing the mechanisms of partial discharge formation and gas decomposition characteristics, an online monitoring device based on gas detection technology is developed. The research demonstrates that partial discharge in air-insulated switchgear causes decomposition of internal gas components, producing characteristic gases such as CO and NO₂. These products serve as critical indicators for detecting partial discharge. A high-sensitivity NO₂ gas sensor is developed using ZnO semiconductor material with composite modification, and a real-time monitoring system is further designed. This provides an efficient and reliable solution for switchgear condition monitoring and fault diagnosis.
Authors: Aoxiang Long, Ping He, Shuai Wang, Xianyue Luo, Ziya Zhou, Lijuan Lu
Institutions: Guizhou Power Grid Co., Ltd. (China), Guizhou University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4409484561