Abstract
The influence of the absolute humidity (H) and the relative air density (δ) in the trajectories of standard lightning impulse point-plane air gaps breakdowns were investigated. For negative impulses the minimum radial distances (impact points on the plane) are slightly increased if the humidity is augmented, the maximum radial distances are decreased if the humidity is risen. For positive impulses there is no influence of H in both maximum and minimum distances. If δ decreased in general the impact points on the plane are more far away from the axis for negative polarity, if the gap distances are enlarged the influence of δ is greater. For positive impulses the effect of δ is not significant. This behavior is because H and oxygen (O 2) produce an inhibition in streamer propagation both in axial advance and in branching due to photon absorption.
| Original language | English |
|---|---|
| Pages (from-to) | 433-436 |
| Number of pages | 4 |
| Journal | Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report |
| Volume | 1 |
| State | Published - 1999 |
| Event | Proceedings of the 1999 68th Annual Conference on Electrical Insulation and Dielectric Phenomena (1999 CEIDP) - Austin, TX, USA Duration: 17 Oct 1999 → 20 Oct 1999 |