Metal particle movement and distribution characteristics under AC voltage and ball-plane electrodes
Autor: | Jixing Sun, Lei Sun, Weijiang Chen, Zhibing Li, Xianglian Yan, Yuan Xu |
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Jazyk: | angličtina |
Rok vydání: | 2019 |
Předmět: |
flashover
gas insulated switchgear electrochemical electrodes insulators discharges (electric) AC voltage ball-plane electrodes gas-insulated metal-enclosed switchgear ultra-high voltage projects particle collides ball electrode particle-moving pattern GIS breakdown metal particle distribution characteristics GIS discharge insulator surface plane surface jump amplitude collision frequency Electrical engineering. Electronics. Nuclear engineering TK1-9971 Electricity QC501-721 |
Zdroj: | High Voltage (2019) |
Druh dokumentu: | article |
ISSN: | 2397-7264 |
DOI: | 10.1049/hve.2018.5018 |
Popis: | Metal particles, difficult to be eliminated in gas-insulated metal-enclosed switchgear (GIS), can cause GIS discharge and breakdown between electrodes, or flashover on the insulator surface. It influences the development of ultra-high voltage (UHV) projects. Therefore, the work optimised the model of metal particle movement under AC voltage, studying the metal particle movement and distribution characteristics between ball-plane electrodes through experiment and simulation. Under AC voltage, the particle jumps on a small scale on the plane surface. With the increase of voltage, the jump amplitude increases. However, the collision frequency decreases until the particle collides with the ball electrode. When the initial phase angle of power changes, the particle-moving pattern is symmetrical in the angle ranging from 0 to 180°, and from 180 to 360°. The collision frequency changes slightly with the increase of jump amplitude when the angel ranges from 0 to 120°. |
Databáze: | Directory of Open Access Journals |
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