Open AccessShort-circuit currents versus inductive reactances of turbo-genset for different types of shorts
Author(s) -
B.S. Dorzhieva,
AUTHOR_ID
Publication year - 2021
Publication title -
trudy krylovskogo gosudarstvennogo naučnogo centra
Language(s) - English
Resource type - Journals
eISSN - 2618-8244
pISSN - 2542-2324
DOI - 10.24937/2542-2324-2021-2-s-i-60-65
Subject(s) - transient (computer programming) , reactance , electrical reactance , short circuit , current (fluid) , equivalent circuit , mechanics , computer science , electrical engineering , control theory (sociology) , inductance , physics , voltage , engineering , control (management) , artificial intelligence , operating system
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.