Long-Time-Scale Models ofTransformers fortheDetermination or Transient

ASSOCIATEMEMBERAIEE KNOWLEDGE oftransient voltages isveryimportant fortransformer design, inparticular forthedesign ofmodernlarge high-voltage powertransformers. Transformer designers needtoknowthe maximumvoltages andthewaveshapes betweena greatnumberofpoints, of greatly diversified structures, forawide rangeofapplied waves, winding connections, andterminations toeffect themost economical design. Since itisdefinitely impractical, and sometimes impossible, tocomputeby purely analytical meansallthetransient voltages, theelectromagnetic model' wasdeveloped tofurnish directly all answers required fortransformer design anddevelopment. Intheelectromagnetic model, allpoints ofinterest arereadily available, manymorethanintheoriginal