Abstract
Surge arrester is an effective measure to protect distribution lines from lightning strikes. But high costs will be spent on the maintenance of a great many surge arresters in 10kV distribution line. Taking the relationship between reliability and economical efficiency into consideration, aiming at installation density of surge arrester, this paper established the effective simulation models of direct lightning stroke overvoltage and induced overvoltage by ATP-EMTP. Finally, this paper presented the optimal installation scheme of surge arrester on the basis of the simulation and analysis of the lightning withstand level. The simulation results provide references for the optimal installation scheme of surge arrester on the distribution network.
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