Authors: A.V. Grigoryev, A.Yu. Vasilyev, S.M. Malyshev
Abstract
The article contains the analysis of calculation of short-circuit currents in traditional electric power systems with distribution of electrical power on an alternating current. The features of flow and calculation of short-circuit currents in ship electric power systems with the distribution of electrical power on direct current are also considered. In these systems, the generator operates at a variable rotation speed, and the electric propulsion motor can feed the location of a short circuit occurrence on the buses of the main direct current switchboard via autonomous inverters. Short-circuit currents are significantly impacted by capacitors located at the input of semiconductor inverters. In this regard, the traditional methods of calculating short-circuit currents for ship electric power systems with distribution on direct current are not suitable. The article formulates recommendations for the calculation of short-circuit currents in systems with direct current electrical power distribution.
Keywords: short circuit, electric current, electric power systems, distribution of electric power on direct current, semiconductor frequency converters, electric propulsion plants, rectifiers, inverters.
References
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About authors
Grigoryev Andrey - PhD, associate professor, Admiral Makarov State University of Maritime and Inland Shipping, JSC “RPC “Ship electric propulsion”, office 178, let. E, 12, Fermskoe roadway, 197341, St.-Petersburg, Russia, e-mail: a.grigorev@eds-marine.ru
Vasilyev Aleksey - JSC “RPC “Ship electric propulsion”, office 178, let. E, 12, Fermskoe roadway, 197341, St.-Petersburg, Russia
Malyshev Sergey - Admiral Makarov State University of Maritime and Inland Shipping, JSC “RPC “Ship electric propulsion”, office 178, let. E, 12, Fermskoe roadway, 197341, St.-Petersburg, Russia
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