Protection Distance of Surge Protective Devices in Low Voltage Distribution Systems  

作　　者：张栋 傅正财 赵刚 孙伟 

机构地区：[1]Department of Electrical Engineering,Shanghai Jiaotong University

出　　处：《Journal of Shanghai Jiaotong university(Science)》2008年第4期477-481,共5页上海交通大学学报（英文版）

摘　　要：Protection distance of surge protective devices (SPDs) is an important problem in designing a good location scheme of SPDs in low voltage distribution systems for protecting electrical equipments against over- voltage caused by lightning stroke. The simplified lumped-parameter circuit model and the circuit method were used to study the protection distance problem of SPDs. The analytical solutions of the load voltage and general equations of the protection distance of SPDs under different load conditions were given. Simulation results of examples proved the validity of the proposed analytical method.Protection distance of surge protective devices （SPDs） is an important problem in designing a good location scheme of SPDs in low voltage distribution systems for protecting electrical equipments against over- voltage caused by lightning stroke. The simplified lumped-parameter circuit model and the circuit method were used to study the protection distance problem of SPDs. The analytical solutions of the load voltage and general equations of the protection distance of SPDs under different load conditions were given. Simulation results of examples proved the validity of the proposed analytical method.

关 键 词：over-voltage protection surge protective devices （SPDs） effective protection distance lumped-parameter circuit 

分 类 号：TM86[电气工程—高电压与绝缘技术]