Abstract：Research purposes: Overvoltage is the main cause for damaging the insulation of power line and also the
essential factor for determining the insulation strength of electric equipment, so it is very important to prevent the
influence on the equipments of substation by overvoltage.
Research methods：First of all, the summary and classification of the overvoltage of the traction substation for electrified
Railway are made, then the analyses and explanation are given on the prevention of all kinds of overvoltage, finally the
reduction and explanation，presented for the calculation formulas of operational overvoltage based on the calculation
example.
Research conclusions: Overvoltage is an important problem regarding to the safety of electric equipments. The
overvoltage problem of traction substation is the basically same as that of substation o# power system, but the traction
substation has much differences in wiring mode, load characteristics and working conditions from the substation of power
system ,so the overvoltage of fraction substation should be handled differently from that of pourer system.
曲昌军,邓云川. 牵引变电所过电压问题研究[J]. 铁道工程学报, 2007, 24(8): 81-84.
QU Chang-jun, DENG Yun-chuan. Research on the Problem of Overvoltage of Traction Substation. 铁道工程学报, 2007, 24(8): 81-84.
2007, Vol. 24 
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