NDLI: A novel approach to reliable determination of surge armature current of a synchronous machine

Content Provider	Springer Nature Link
Author	Chabav, E. A. Sudakov, A. I.
Copyright Year	2014
Abstract	Calculation of a short circuit current of a symmetrical fault in a high-power synchronous machine in accordance with national standards is time-consuming and imprecise. The process involves multiple graphic operations and a triple transition from an analog transient process to its discrete form and back. As a result, optimizing procedures cannot be applied to transient identification techniques that meet national standards and it is impossible to compensate for random factors in the identification process. Therefore, a surge current derived from experimental data is not adequate for transients in high-power synchronous machines. Modern equipment for recording of short-term transients solves many processing problems. Express determination of a surge current is obtained using a digital waveform recorder, which allows precise calculation of 50-Hz peaks and discrete representation of the 100-Hz component of the transients. This method of information extraction and processing replaces all the time-consuming graphic operations of the national standards. Results of a study of a 110-MW synchronous machine based on laboratory tests for various stator voltages are presented. The study has confirmed the viability of the proposed approach for express determination of a surge current without the need to determine the parameters of transients.
Starting Page	687
Ending Page	691
Page Count	5
File Format	PDF
ISSN	10683712
Journal	Russian Electrical Engineering
Volume Number	85
Issue Number	11
e-ISSN	19348010
Language	English
Publisher	Allerton Press
Publisher Date	2015-01-24
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	synchronous machine the transition process identification time cinstant the initial value of current surge current Manufacturing, Machines, Tools
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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