Energy taking power supply of overhead line

The utility model discloses an energy taking power supply of an overhead line. The energy taking power supply comprises an energy taking capacitor, a transformer, an AC/DC power supply module and a protection module, wherein the energy taking capacitor is connected with a power supply and distribution line; the AC/DC power supply module is connected with the output end of a secondary lateral coil of the transformer; the protection module is used for protect the transformer when the thunderbolt happens to the power supply and distribution line; one connecting terminal of a primary lateral coil of the transformer is grounded, and the other connecting terminal thereof passes through the energy taking capacitor and then is connected with the power supply and distribution line; the energy taking capacitor is connected with the power supply and distribution line and the primary lateral coil of the transformer respectively; the power supply and distribution line is an overhead power transmission line; and the energy