Open AccessReal‐time diagnosis of high‐speed rail traction transformer in different topologies
Author(s) -
Tu Ming,
Yan Wei,
Zhao Yang,
Wang Enrong,
Fu Chunxiao,
Ma Runqing,
Zhu Jiaming
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8898
Subject(s) - traction (geology) , transformer , traction substation , electrical impedance , computer science , automotive engineering , voltage , electrical engineering , engineering , electronic engineering , mechanical engineering
High‐speed railway (HSR) traction transformer, as a connection between traction power supply system and the power grid, is critical in electrified railway design, which requires a drastic change of traction load and frequent external short circuits. In the actual operation process, the traction transformer can produce minor faults that are difficult to detect such as the deformation of the winding, which may result in a serious problem. This study analyses the topology structures and winding fault characteristics of six HSR traction transformers consisting of single phase, Vv, YNd11, Scott, YNvd and impedance matching wiring. Both circuit models of normal operation and fault operation of HSR traction transformer are established. Results show that real‐time diagnosis of HSR traction transformer can be accomplished through measuring the voltage signal of the input and output points during operation and establishing real‐time monitoring statistics of small faults standardisation I 2 and squared prediction errorbased on fast independent component analysis algorithm, as well as the signal statistics distribution, thereby improving the safety and reliability of HSR operation.