作者: Vahid Behjat , Abolfazl Vahedi
DOI: 10.1002/JNM.1868
关键词: Isolation transformer 、 Rotary variable differential transformer 、 Linear variable differential transformer 、 Distribution transformer 、 Leakage inductance 、 Delta-wye transformer 、 Electrical engineering 、 Energy efficient transformer 、 Engineering 、 Current transformer
摘要: SUMMARY Interturn short circuit faults are the leading cause of power transformer failures. If not quickly detected, these usually develop into more serious faults, which would result in irreversible damage to transformer, unexpected outages, and consequential costs. The aim this research is obtain a better understanding physical behavior transformers presence interturn as well discover best indicators for detection faults. To end, time stepping finite element model has been developed analyze transient real when working under winding fault conditions. model, coupled with external equations, allows us simulate dynamic supply loads connections. FEM computations show ability electromagnetic flux inside terminal currents, circulating current shorted turns useful monitoring parameters detection. Copyright © 2013 John Wiley & Sons, Ltd.