The invention provides a parallel gap
lightning protector with an oscillating arm
electrode, belongs to the technical field of the
lightning protection of power overhead lines, and in particularly relates to an annular parallel gap
lightning protector with the oscillating arm
electrode and a high-
voltage overhead line insulator string; the annular parallel gap lightning protector is capable of automatically rotating according to the
short circuit condition of power-frequency electric arcs, and therefore, the length of the gap is increased to extinguish the power-frequency electric arcs as soon as possible, and lightning
stroke line breakage accidents are effectively reduced; the following technical scheme is adopted: a current guide ring is a conducting
metal ring which closely sleeves a naked conductor obtained by peeling off an insulating layer of a lead, a lead side
electrode and a ground side electrode both are spherical rod-like electrodes, one ends of the lead side electrode and the ground side electrode both are made of spherical
metal relatively high in density, the other end of the lead side electrode is fixedly connected with the current guide ring, a
rotating disc is arranged on the other end of the ground side electrode and hinged with one end of a fixed support, the other end of the fixed support is fixed on the lower end of an insulator, and a self-oscillating device is further mounted in the middle of the fixed support.