Research On Self Healing Technology Of Smart Traction Power Supply System

Once the power supply system occurs fault,the existing relay protection will make the all fault feeder lose power,which will affect the operation order of the railway system.This requires when the traction power supply system occurs fault,the system quickly come into the standby equipment service or reduce the power outage to ensure vehicle traffic.So,it has important practical significance that rebuilding and recovering method research of Railway Smart traction power supply system.At present,the research of traction power supply system self-healing less,from rich engineering experience of distribution network self-healing recombinant,combined with the characteristics and demand recovery of traction power supply system,self-healing model is established for the smart power supply system.The contents of this paper include the following aspects:Firstly,the traction power supply system in the event of a standby equipment failure,restore the power supply situation and shortage of catenary fault and the circuit breaker refuse operation were analyzed.The application of power system fault restoration method and the advantages and disadvantages were introduced.Combined with the characteristics of traction power supply system,the expert system is selected as the traction power supply system rebuilding and recovering method and the expert system rebuilding and recovering the data flow and the model were introduced.Secondly,according to the characteristics of the traction power supply system,the database of expert system database and the electrical equipment fault information base is established.All parallel AT power supply system has standby equipment fault,network fault and contact breaker switch under the condition of work flow is analyzed.Standby equipment recovery rules,catenary recovery rules and breaker rejecting rules under rules composition were established.Finally,in the traction power supply system of recombinant self-healing based on expert system.The smart traction power supply system recombinant self-healing prototyping software was designed based on Access and VC 6++ software.The software has generated recombinant healing results,recombinant self-healing report generating and export functions.The software has been restructuring self-healing operation processes and rules of reorganization the healing process results.The validity of the software was verified.