Automatic Current Transformer Verification Technology for High-Speed Railway Power Based on Edge-Cloud Collaborative Computing

Abstract

Current transformer is a key power equipment for high-speed railway power, with high risk for the operator. Based on the architecture of edge-cloud collaborative computing, an automatic high voltage transformer verification technology is proposed considering the applicability in various fields. a vehicle mounted verification device is designed, on which the verification computing at edge side can be realized. The working state model of current transformer is built based on the closed-loop ARMAX model. Combing the ARMAX Model identification with MOEA/D tendency guidance, the characteristic of fault mode for high voltage transformer is proposed. The comparative validation experiment is conducted for 30 consecutive days at a 15VA current transformer and a3.75VA current transformer. The results show that the estimated value of ratio error can reflect actual state changes, which can be used to identify the fault status of the high voltage current transformer. The automatic high voltage transformer verification is achieved with more security for the operator, and it has the value of promotion and application.