Judging from the long-term operation of the power supply line of overhead contact system of electrified railway,the reliability of the power supply line connected to OCS by T-connection mode is low,which is a weak link affecting the safety of the power supply line.In view of the accident caused by the break of power supply line at T-connection position,the weak points of T-connection mode for existing power supply lines are analyzed,two design schemes for optimizing T-connection mode for power supply line are put forward.Through comparison,it is concluded that the power supply line is directly connected to OCS,which matches the actual maintenance capacity.The mode that whole anchor section is directly connected to OCS is used transform the power supply line.After uninterrupted monitoring and inspection for one year,it is proved that the failure rate of the power supply line is obviously reduced,the temperature is further reduced when the power supply line is operating,and the maintenance is more convenient.
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