Articles of The Transactions of KSRC

Full text article ( in russian)

Year	2021
Issue	20212
Volume	2
Pages	60-65
Caption	Short-circuit currents versus inductive reactances of turbo-genset for different types of shorts
Authors	Dorzhieva B.
Keywords	turbo-genset, short circuit, subtransient reactance, transient reactance, short-circuit current
DOI	10.24937/2542-2324-2021-2-S-I-60-65
Summary	This paper discusses how short-circuit currents of turbo-genset depend on its inductive reactances for the cases of triple-, double- and single-phase shorts. The study tackles air-cooled turbo-gensets. The purpose of this work was to investigate the effect of changes in synchronous, transient and subtransient inductive reactances of turbo-genset upon short-circuit currents for different types of shorts. Short-circuit currents were calculated as per Park-Gorev equations. The changes in currents were plotted against both longitudinal and transverse axes. The results were further used to plot short-circuit currents as functions of subtransient and transient turbo-genset reactances. These plots show that even a minor change in subtransient and transient reactance results in a significant change of short-circuit current.