适用于高寒高海拔条件的车顶避雷器优选建议

结合高寒高海拔地区气候条件,分析避雷器的种类、特点和适用性。针对电气化铁路过电压特性及负荷特性对比研究频繁过电压冲击及冷热冲击条件下的避雷器耐受特性,提出列车车顶避雷器在高寒高海拔地区的优选建议。对电位梯度高、尺寸大、残压比低的无间隙氧化锌避雷器提出适用性建议,为高寒高海拔条件下避雷器的广泛应用提供参考。

With connection to the climatic conditions in cold and high-altitude areas,the types,characteristics and applicability of lightning arresters are analyzed.With regard to the overvoltage characteristics and load characteristics of electrified railway,the withstand characteristics of lightning arrester under frequent overvoltage impact,cold and hot impact are compared,and the optimization proposals of train roof lightning arrester in severe cold and high-altitude areas are put forward.The applicable proposals for gapless zinc oxide arresters with high potential gradient,large size and low residual voltage ratio are put forward,and they are able to provide a reference for the wide application of arresters under areas of severe cold and high-altitude.