Multi-Parameter Signal and Time Sequence Characterization of Large Transformer Turn-to-Turn Faults

Inter-turn short-circuit faults constitute one of the frequently occurring discharge fault types in the windings of large power transformers. To investigate the multi-parameter signals and temporal characteristics during transformer inter-turn faults, a simulation experimental platform for inter-turn faults was constructed, and a system capable of simultaneous measurement and acquisition of multiple parameters during fault occurrence was established. On this basis, typical characteristics of multiple physical parameters during inter-turn short-circuit faults were extracted, and the temporal characteristics of high-frequency current signals were analyzed. Compared to detection methods in previous studies, the research on multi-parameter detection and temporal characteristics provides a more reliable and accurate basis for the diagnosis and timely warning of transformer inter-turn faults.