Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference (한국조명전기설비학회:학술대회논문집)
- 2006.05a
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- Pages.69-73
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- 2006
The Characteristic of Voltage Sags in Distribution System with Induction Motor Loads
유도전동기 부하를 고려한 배전계통의 전압저하(sag)특성
- Published : 2006.05.11
Abstract
The calculation of depth and duration of a sag is in both methods based on two simple assumptions. One is that due to the short circuit, the voltage drops to a low value immediately magnitude. Another is that when the fault is cleared. the voltage recovers immediately. These assumptions, however, do not hold in the case of a substantial part of the load consisting of electrical motors like in many industrial power systems. During the short circuit, the motors will slow down. Their reacceleration after the fault will increase the load current and thus prolong the voltage sag. This paper will discuss some of the aspects of the influence of induction motors on voltage sags.
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