Initial Characteristics of Submillimeter Metal Particles in GIS under Impact Vibration

Bo Niu, Tao Bai, Tianyi Shi, Xutao Wu, Xutao Han () and Weifeng Liu
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Bo Niu: State Grid Ningxia Electric Power Research Institute, Yinchuan 750001, China
Tao Bai: State Grid Ningxia Electric Power Co., Ltd. Shizuishan Power Supply Company, Shizuishan 753200, China
Tianyi Shi: State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
Xutao Wu: State Grid Ningxia Electric Power Research Institute, Yinchuan 750001, China
Xutao Han: State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
Weifeng Liu: State Grid Ningxia Electric Power Research Institute, Yinchuan 750001, China

Energies, 2024, vol. 17, issue 20, 1-12

Abstract: As a critical component within power systems, Gas Insulated Switchgear (GIS) is notably susceptible to insulation degradation due to submillimeter metal particles, compromising its operational safety and stability. Moreover, impact vibrations induced by circuit breaker operations can dislodge particles that typically adhere to the interior walls, causing them to become airborne and thereby intensifying their movement and discharge activities. To investigate this phenomenon, this study establishes a testing platform where alternating current (AC) voltage is superimposed with impact vibration. A camera system, interfaced with an upper computer, is used to capture the real-time motion behavior of the particles. This study focuses on characterizing the initial movement of submillimeter metal particles of varying sizes under the influence of impact vibration by analyzing critical voltages, such as the initial lift-off voltage, stable jumping voltage, and extinction voltage. Furthermore, the effects of introducing large, centimeter-scale spherical metal and rubber particles on these initial characteristics are examined. The findings provide crucial insights into the initial behavior of submillimeter metal particles in GIS, particularly in relation to circuit breaker operations.

Keywords: initial characteristics; submillimeter metal particles; GIS; impact vibration (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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