This study presents a simulation analysis of the internal electric field distribution in Gas-Insulated Switchgear (GIS) equipped with embedded optical fiber bundles. GIS, a high-voltage electrical device, is widely used in power systems due to its high safety, reliability, and compact design. With the rapid advancement of high-voltage GIS technology in China, there is an increasing demand for more advanced condition monitoring and internal inspection techniques for GIS equipment. This paper first introduces the development background of high-voltage GIS technology and reviews the current research, both domestically and internationally. It then details the application of optical fiber bundle technology in GIS monitoring and performs electric field simulations of GIS devices with embedded optical fiber bundles using the finite element method. The simulation model is constructed in SolidWorks, and parameter settings and simulation analysis are carried out using COMSOL software. The results show that, under two different voltage conditions (460 kV and 1050 kV), the impact of optical fiber bundles on the internal electric field of GIS is minimal, with the maximum electric field strength remaining well below the breakdown strength of SF 6 gas. These findings validate the reliability of optical fiber bundles in GIS applications. This study provides a theoretical basis for ensuring the safety of power grids and protecting the safety of personnel, while also offering valuable insights for future experimental work.
Feng et al. (Thu,) studied this question.
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