NDLI: Influence of Short-Circuit Duration on Dynamic Stresses in Substations

Content Provider	IEEE Xplore Digital Library
Author	Tsanakas, D.K. Papadias, B.C.
Copyright Year	1963
Abstract	The short-circuit peak current and the electromagnetic short-circuit peak force appear at about 10 ms after the short-circuit inception. However, the maximum value of dynamic stress due to the electromagnetic forces may occur much later and depends on the fundamental frequency of the structure. A decrease in dynamic stress can be obtained even if the short-circuit duration is much longer than 10 ms. In the presentwork, the dynamic stress on stiff conductors and insulators during the short-circuit, as well as, the subsequent free oscillation after fault clearing, are analytically determined and the influence of short-circuit duration on the dynamic stress in certain cases of busbar structures is investigated. Furthermore, the shortest short-circuit durationwhichresults in maximum dynamic stress is given for the entire range of the relevant mechanical fundamental frequencies.
Starting Page	492
Ending Page	501
Page Count	10
File Size	2752062
File Format	PDF
ISSN	00189510
Volume Number	PAS-102
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1983-02-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Stress Substations Conductors Electromagnetic forces Frequency Insulation Circuit faults Electromagnetic modeling Resonance RLC circuits
Content Type	Text
Resource Type	Article
Subject	Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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Influence of Short-Circuit Duration on Dynamic Stresses in Substations

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Mechanical effects of high short-circuit currents in substations

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Short-Circuit Forces in Isolated-Phase Busses [includes discussion]

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Characteristics of Short Circuit Electromagnetic Forces in Three-Phase Enclosure Type Gas Insulated Bus

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