抄録
The flashover characteristics of long air gaps submitted to switching surge voltages may be predetermined by use of a mathematical model of leader propagation.
The present model is developed from each combinations of previous engineering models, and is also applied to positive rod to plane geometries with gap lengths up to 20m.
However, four parameters to determine leader propagation with respect to our model are adjusted in the present calculation as so to fit experimental flashover voltages and calculated flashover voltages which depend on wave forms of the applied voltage and gap length. The calculations show that these parameters are only a function of gap length.
Our combined engineering model used the parameters depending on gap length is easily able to predetermine the flashover characteristics of long air gaps with a microcomputer.
