Search academic texts

Information × Registration Number 0217U006115, 0114U001224 , R & D reports Title Electromagnetic processes in the windings of power transformers during the surge popup.stage_title Head Nykonets Leonid, Registration Date 13-02-2017 Organization Lviv Polytechnic State University popup.description2 For the first time the electromagnetic processes inside transformer windings are studied with the methods of physical experiment. It's described in the dissertation the phenomenon of internal resonance evolving among constructively identical winding parts because of the difference between resonance frequencies of frequency characteristics of winding parts and resonance frequencies of frequency characteristics of the winding itself. Because of this property, the winding, considered as a distributed parameter line with mutual induction among its longitudinal elements, becomes heterogeneous. The consequence of such a heterogeneity is nonlinear voltage distribution along windings and their parts, violation of reciprocity principle of mutual induction in real transformers and resonance processes appearance caused by flows of mutual induction in disabled windings or their parts on the frequencies, which are determined by not only the frequency characteristics of the disabled windings or their parts, but also the frequency characteristics of the windings, where flowing currents cause flows of mutual induction. Product Description popup.authors Венгер Віктор Петрович Венгер Володимир Петрович Гущин Євген Юрійович Никонець Олексій Леонідович popup.nrat_date 2020-04-02 Close