The Discussion About The Lightning Protection Measures About Catenary System Of The Beijing-Guangzhou High-speed From Xu Chang Dong To Wuhan Section

Comparing with the plain speed railway controlling by Xin yang power supply bureau institution,Wuhan railway administration,the rate of the traction power supply catenary lightning trip-out increased significantly,the equipment damage and the train operation interruption caused by lightning interfere with the operation safety seriously,this situation needs to be addressed.It analysis suggests that the main cause of the highly rate of the high speed railway lightning trip-out is as follows: the line is relatively concentrated in the economically developed southeast coastal and southern regions,wher e has the strong activity of thunder;Under the economic consideration of the operational safety,land acquistison in construction,more than 50% of all road construction on the viaduct,raising the height of catenary,the Beijing-Guangzhou line,the average height from catenary to the ground pass 16 m,that increasing the probability of lightning strike.Catenary insulation configuration is low,the level of directing lightning bellows 4 ka;And there is no standby,once the failure of catenary in trouble,it will directly affect the traffic order.At present,the lightning protection measures about the Xu chang dong-Wuhan section included Beijing-Guangzhou high-speed is not perfect,equipment failure caused by lightning risk.This paper firstly analysis the limitations of Xu chang dong-Wuhan section included Beijing-Guangzhou high-speed lightning protection original online,analysis its lightning protection ability,According to the analysis of the advantages and disadvantages of the lightning protection about the catenary system,it discuss and arguments the project about installing the lighting wire on heavy minefield.As well as plusing cathodic protection in order to reduce the grounding resistance value,which reveals large current of lightning strike much better.This paper focus on setting lighting wire and improving the comprehensive ground net.Combining the equipment installations and safety requirements about our prefecture in Beijing-Guangzhou high speed railway,formulating the targeted construction scheme of setting lighting wire,improving the grounding network in synchronous grounding resistance.Synchronized and symptoms.Finding the most suitable in security and economic contradictions balance,which not only save the material cost,but also greatly improve the ability of catenary lightning protection and lightning resistance wire by itself.