単相配電線路における耐雷ホーン1相省略方法の検討

抄録

Omitting one phase's current limiting arcing horns on three-phase distribution lines has been applied since 1990's and contributes the costdown for lightning protective countermeasures. Moreover, in order to promote the costdown for the lightning protective countermeasures on single-phase distribution lines, we have investigated the methods omitting one phase's current limiting arcing horns on single-phase distribution lines.
When the single-phase distribution line omitting one phase's current limiting arcing horns branches or extends from three-phase distribution line omitting middle phase's current limiting arcing horns, there are possibilities that short circuits are generated between the single-phase distribution line and the three-phase distribution line by a direct lightning stroke.
In order to preventing the short circuits outage, we have clarified the conditions that sparkovers generated at some poles and that short circuits continued experimentally and analytically. Based on these conditions, we proposed some effective countermeasures for preventing the short circuits outage on single-phase distribution line omitting one phase's current limiting arcing horns.