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Research on Reducing the Power Loss of Lightning Shield Line on Lightning Protection System of Photovoltaic Grid-Connected Power

In order to reduce power loss of lightning shield line on lightning protection system of photovoltaic grid-connected power, the paper presented a method of using multiple impedance to insolate lightning shield line and pole-tower, in order to reduce induction voltage and current passing lightning shield line, and the EMTP program has simulated the method, and the simulation results proved its feasibility and effectiveness. But the system sequence impedance will also change following, so it is necessary to adjust the setting value of the whole system protection in order to meet demands of thunder lightning shield protection on photovoltaic grid-connected system.