Automatic tracking compensation and earthing wire selecting positioning device using arc suppression coil

The utility model discloses an automatic tracking compensation and grounding wire selecting and positioning device of arc extinguishing coils, which solves the problems existing in the present power distribution systems that tracking compensation effect is poor and grounding points are difficult to find. The utility model has the advantage of simple structure. The utility model is composed of a signal generator, a signal processing controller and a positioning detector, wherein the signal generator is connected with the signal processing controller, the output end of the signal generator is in secondary side connection with an arc extinguishing coil, and signal current is poured in an electric network through the arc extinguishing coil; the signal processing controller is connected with a zero-sequence mutual inductor CT of a generatrix and the end of an opening triangular N-L of a generatrix PT of the electric network. Current signals and voltage signals, which are filled in the electric network by the signal generator, are fetched to adjust the compensating inductance of the arc extinguishing coil. After the electric network is connected with ground, voltage of both ends of the opening triangular N-L of the generatrix PT is suddenly changed into line voltage, and the signal processing controller stops compensation. A grounding phase is selected and started again to fill signal current to the electric network, and a signal detector traces and positions the filled signal current.