Study on the motion characteristics of metal particles in GIS

Yang, Ruicheng, Li, Qingmin, Wei, Lai, Wang, Wei, Chang, Yanan, Xue, Naifan, Wang, Yuan, Wang, Jian, Ren, Hanwen and Haddad, Manu ORCID: https://orcid.org/0000-0003-4153-6146 2024. Study on the motion characteristics of metal particles in GIS. Presented at: 23rd International Symposium on High Voltage Engineering (ISH 2023), Glasgow, UK, 28 August - 1 September 2023. IET Conference Proceedings. , vol.2023 (46) pp. 33-37. 10.1049/icp.2024.0423

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Abstract

GIL/GIS has become an important carrier for power transmission in China because of its excellent transmission performance. However, different types of particulate foreign matter will be generated during its production, transportation and installation and operation. The metal particles will move under the electric field when operating with electricity, which will produce damage to the insulation performance of GIL/GIS. In this paper, we studied the generation of particles in the air chamber of the circuit breaker during uncharged operation. After several mechanical operations, we found that the number of metal particles generated tended to be stable, and their shapes were linear, sheet and spherical particles. After that, the movement characteristics of each metal particle were studied. The movement of metal particles inside the GIS gas chamber includes three processes: metal particle initiation, metal particles moving violently and gradually to the low field strength area, and triggering the violent flashover phenomenon. This experiment summarizes the influencing factors of metal particle motion in GIS gas chamber, including: particle type, material thickness, and air pressure. The kinematic characteristics of metal particle motion under different initial influencing factors are studied to quantitatively analyze the law between the generation of flashover and different initial conditions.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Engineering
Last Modified:	21 Nov 2024 12:15
URI:	https://orca.cardiff.ac.uk/id/eprint/174208

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