In:
Frontiers in Physics, Frontiers Media SA, Vol. 10 ( 2022-5-24)
Abstract:
During the long-term operation of electrical equipment, the insulation performance of applied SF 6 gas may be affected by humidity, pressure, and temperature. In this study, the collision cross sections of SF 6 and H 2 O are considered, including ionization, attachment, excitation, and elastic collision. In order to analyze the influencing factors of SF 6 insulation performance, discharge parameters are computed by the Boltzmann equation under different environmental conditions, including humidity, pressure, and temperature. It is concluded that with the conditions of 0.1 MPa and 300 K, the critical breakdown electric field increases by 1.23 kV/cm as the relative humidity increases from 0% to 80%. As the pressure increases from 0.1 to 0.6 MPa, the critical breakdown electric field increases by 451.07 kV/cm. However, temperature also has little effect on the insulation performance of SF 6 gas. The conclusions of this study have reference value for safe and stable operation of SF 6 insulated power equipment.
Type of Medium:
Online Resource
ISSN:
2296-424X
DOI:
10.3389/fphy.2022.820036
Language:
Unknown
Publisher:
Frontiers Media SA
Publication Date:
2022
detail.hit.zdb_id:
2721033-9
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