Research on the Protection Project of Lightning Overvoltage for the High-Speed Rail Traction Substation

This paper studies protective measures and the lightning overvoltage which from high- speed railway traction substation high voltage 330 kV line side and a different feeder side. The lightning overvoltage simulation models of the traction substation have been established with ATP-EMTP; different outlet means and the distribution plan of arrester have been simulated and analyzed. The simulation results show that the lightning overvoltage of the feeder connecting the viaduct through power line is higher when the lightning strikes with different feeder connection mode; at the same time, a set of Y5W-42/120 arrester should be installed at the voltage transform of the low-voltage bus.