Abstract：Research purposes:In order to research over-voltage produced by electric locomotive power outage over split-phase which makes equipment insulation breakdown，chain-type equivalent circuit model of timing switch control is established. The new suppression method which suppress the over-voltage is proposed compared with the over -voltage produced by joint simulation model in the single and double neutral section of seven/eight span overlapping electrical sectioning device in electric locomotive-electrical sectioning-traction network.
Research conclusions:(1)The over-voltage of seven-span overlapping electrical sectioning device is consistent with the test results of literature，and the residual pressure co-simulation and the theoretical value are about 11 kV，which further prove the effectiveness of the simulation.(2)The maximum overvoltage decreases from 95. 57 kV in the single neutral section of the seven-span overlapping electrical sectioning device to 59. 28 kV in the bilateral neutral passive RC circuit of the eight-span overlapping electrical sectioning device，which suppressive effect is obvious. （3）Experimental results have the important reference value for anchor section joint electrical phase design.
Liu Mingguang. Over-voltage Analysis and Protection of Railway Power Supply Network[M].Beijing : Beijing University Press, 2009. [2]赵小乐，张宪，李晓雷.浅谈接触网三断口八跨锚段关节式电分相技术[J].铁道建筑技术，2010(7):22-29.
Zhao Xiaole , Zhang Xian , Li Xiaolei. Preliminary Discussion on the Technology about Catenary on Three Fracture Overlapping Electrical Sectioning Device[J]. Railway Construction Technology , 2010 (7 ) : 22-29.
Yang Peibin, Zhang Zhansheng, Zhang Jinsheng, etc. The Cause and Countermeasures of Resonance Overvoltage Produced by Traction Substation Switching Operation [ J ].Railway Locomotive&Car, 2006(26): 68-70.
2014, Vol. 31 
版权所有 © 2014 《铁道工程学报》编辑部