Abstract
In order to study the voltage distribution in transformer windings under very fast transient overvoltage (VFTO), a model for transformer windings has been developed based on multi-conductor transmission-lines (MTLs) theory and the computing equations of the model based on finite-difference time-domain method (FDTD) is deduced. The vector fitting method is adopted to treat the frequency-dependent parameter by expanding the time-domain form of internal impedance of the transformer windings into a sum of finite exponential functions which are easy for the time-domain convolution. For validation, an actual transformer winding model has been studied. The calculated results are compared with the measured result and a satisfactory result is obtained
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
