Experimental study on new type earth mesh in railway substations aimed at lightning protection

In Japanese electrical railways, earth meshes are normally utilized as earthing electrodes in the traction substations. The earthing meshes are designed and optimized for low-frequency phenomena, such as earth-fault whose frequency is about between zero (dc) and few kilo hertz (power frequency and its low-order harmonics). Because the earthing impedance of… CONTINUE READING