Patent ID: 7760483

Claim:
A lightning protection method of compound active and passive plasma, the method comprising steps of: detecting a strength of a lightning cloud electrical field, by a lightning fore-alarming signal unit, when it reaches to a pre-determined limitation; sending a signal to start an active plasma generation unit, and an air flowing source unit; transporting air or other suited gases to the active plasma generation unit by the air flowing source unit via a plasma piping in each lightning rod to blow out a high density plasma generated by the active generation unit at the tips of the lightning rod unit; under the action of the lightning electric field, passively forming corona discharge and producing a plasma by single or multi-tips of the lightning rod unit; compounding the active generated plasma and the passively produced plasma at the tips of the lightning rod unit and spreading it to around a space; as the plasma acted as good electrical conductor at gaseous state, dissipating the electric charges on the tips of the rods induced by the lightning cloud electrical field; neutralizing the electric charges of the lightning cloud; reducing the electrical field strength in around the space; eliminating the lightning cloud voltage punctured to the rods; and preventing a thunderstruck to a protected object related to the rods.