Distributed Measurement System with GPS Synchronisation and Its Use in Electric Traction

摘要

This paper deals with distributed measurements inpower electrical engineering. The word “distributed” meansthat the measurement is carried out simultaneously in differentlocations. Distance between these locations can be tens ofkilometers or more. For a long time, the authors have beenperforming electrical measurements in electric traction,especially in electrified railways. Due to the extensiveness of therailway network, it is very important to find the solution of thisproblem. After a thorough examination of the subject, theauthors have developed computer based measuring apparatusesand GPS based synchronizers. This paper describes thecreation of the GPS synchronizer as well as a post-processingdata synchronization method. The concluding part includes anexample of this apparatus being practically used while carryingout measurements in a railway traction transformer substationand on track circuits. Some interesting measurement results, as well as their analysis, are also presented here.