Browsing by Author "Kostin, Nickolai A."
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Item Correlation Theory of Casual Processes in Electrical Power Problems for Systems of Electric Transport (preprint)(IEEE, Lviv, 2015) Kostin, Nickolai A.; Mishchenko, Tatyana M.; Shumikhina, LyudmilaENG: A new method is proposed for determining the energy indices in electric transport systems, based on the correlation theory of random processes. According to this method, the components of apparent power and power factor are expressed through correlation functions and mathematical expectations of investigated traction voltages and currents. Numerical calculations of active, reactive and apparent power as well as the ratio of reactive power for a traction substation feeder show that the method possesses high accuracy: the error is less than 2%.Item Mathematical Modelling of Transitional Emergency Processes in Traction Power Network of Railway Transport(Національний університет "Львівська політехніка", 2011) Kostin, Nickolai A.; Mishchenko, Tatyana M.; Reutskova, Oksana M.; Mihalichenko, Pavel E.ENG: The article deals with the description of the mathematical model the system traction electric power supply without loading in the short circuit condition and the result of the reserches this accident process.Item Mathematical Modelling of Transitional Emergency Processes in Traction Power Networks of Railway Transport [preprint](Національний університет "Львівська політехніка", 2011) Kostin, Nickolai A.; Mishchenko, Tatyana M.; Mihalichenko, Pavel E.; Reutskova, Oksana M.ENG: The results of mathematical modelling of emergency modes of short circuit in railway traction power networks have been given.Item Non-Productive Losses of Electric Power in the Network Power Supply of Main Railway(X International Conference Modern Electric Traction Rationalization of energy consuming in the rail transport, 2011) Kostin, Nickolai A.; Mishchenko, Tatyana M.; Petrov, Andrey V.; Reutskova, Oksana M.ENG: In article is executed estimation Non-productive losses, as well as factors quality to electric powers in tractive network of the system direct current electric pulling.