Abstract：Research purposes:Urban rail transit OCS lightning overvoltage damage is increasingly prominent. Because the power supply OCS has no standby equipment，lightning stroke will damage the equipment and thus directly influence train operation safety. Tianjin-Binhai light rail engineering is one of the most seriously lightning damaged urban transit engineering. According to the detailed status of Tianjin-Binhai line OCS，mathematical model is build. The software is applied to analyze OCS lightning flash over characteristics so as to improve OCS existing lightning protection measures and increase its ability to resist lightning disaster. Meanwhile，special lightning arrester suitable to urban transit OCS is researched and manufactured.
Research conclusions:(1)Urban rail transit power supply system which takes lightning overvoltage protection measures could reduce the breakage rate of OCS insulator after thorough flash-over in overvoltage，also reduce the tripping rate of substation in a lightning stroke，which could meet both the reliability requirement of tractive power supply system and safety requirement of operation. (2)Because the protection measures to the isolator are inadequate，lightning arrester could not prevent backward flashover tripping, severe accidents and damages occur.(3)OCS insulator has low lightning withstand level，it is a valid measure to install in parallel metal oxide arrester with gap to prevent insulator lightning stroke damage. (4)OCS steel mast shall be earthed and OCS shall be installed overhead earth wire and shall approach live conductor as possible as it can，but no need to lift. (5)The substation shall adopt corresponding measures to carry out overvoltage protection against lightning stroke.(6)The research result can be applied on urban mass transit rail aspect.
田雨. 津滨轻轨架空接触网雷害防治研究[J]. 铁道工程学报, 2014, 31(5): 90-94.
TIAN Yu. Research on the Lightning Protection of OCS in Tianjin-Binhai Light Rail. 铁道工程学报, 2014, 31(5): 90-94.
2014, Vol. 31 
版权所有 © 2014 《铁道工程学报》编辑部