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| Research on Induction Voltage of Traction Electric Network of High － speed Railway |
| WANG Bin1，WANG Quan Xiao2 |
| 1． Nangjing Institute of Railway Technology，Nangjing，Jiangsu 210015，China; 2． Electric Power Research Institute，State Grid，Nangjing，Jiangsu 210003，China |
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Abstract Research purposes: At present，the double － track electrified railway has developed rapidly，the personal injury accidents caused by the induction voltage from the traction electric network of electrified railway occurs sometimes． For solving this problem，the preventive measures should be offered through making the analysis of the induction voltage mechanism，doing research on the strength of the induction voltage and knowing the calculation formula for the induction voltage． This paper offers the accurate calculation formula for the induction voltage caused by electromagnetic with the image method of the electromagnetic field theory．
Research conclusions: When the current passes through the catenary wire，the electric and magnetic fields form the around the catenary wire，and the electric and magnetic fields produce magnetic effects on the near conductors of the traction electric network． The strength of the induction voltage caused by electrify is proportional with the voltage strength of electric wire and the induction voltage caused by magnetics is proportional with the strength of the traction current and parallel length while the total induction voltage is the vector sum of the two induction voltages．
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Received: 10 February 2011
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2011, Vol. 28 
