Research on the construction scheme of smart traction substation

HOU Qi-fang

（Electric Railway Design Department，China Railway First Survey and Design Institute Group Ltd.，Xi'an 710043，China）

Abstract：Smart substation has been gradually extended in the power industry，but the intellectualization of the traction substation which is the key link of the electric railway has not been really started. Aiming that the problems that research and application of the smart traction substation is still relatively backward，the status and problems of the traction substation automation system was introduced. The advantages and limitations of the digital substation which is more advanced than traditional substation was analyzed. The differences between smart substation and digital substation were compared. Referred to the relevant power industry norms and standards，combined with the characteristics of the traction substation，the overall architecture of the smart traction substation was constructed. The network structure and the configuration programs of the substation layer，bay layer and process layer of the smart traction substation were given. The intelligent primary equipment scheme suitable for traction substation was proposed such as traction transformer，circuit breaker，gas insulated switchgear，etc.. The results have certain reference value to carry out theoretical and applied research in the smart traction substation.