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A Study on Voltage Collapse Mechanism using Equivalent Mechanical Model  

Kim, Do-Hyung (Dept. of Electrical Engineering, Yonsei Univ.)
Ryu, Heon-Su (Dept. of Electrical Engineering, Yonsei Univ.)
Lee, Jong-Gi (Dept. of Electrical Engineering, Yonsei Univ.)
Moon, Young-Hyun (Dept. of Electrical Engineering, Yonsei Univ.)
Publication Information
KIEE International Transactions on Power Engineering / v.12A, no.1, 2002 , pp. 6-14 More about this Journal
Abstract
In this paper, an EMM(Equivalent Mechanical Model) Is developed to explain the voltage collapse mechanism by reflecting the effects of reactive powers. The proposed EMM exactly represents the voltage instability mechanism described by the system equations. By the use of the EMM model, the voltage collapse mechanism has been illustrated by showing the exactness of the results. The stable region has been investigated with a reactive-power-controlled two-bus system, which shows that special alerts are required when the system operates with leading power factor. It is also discussed a system transform technique to eliminate the resistance component of the Thevenin equivalent impedance for practical applications. Finally, the results adopting the proposed method fur sample systems which were transformed are listed
Keywords
voltage collapse mechanism; equivalent mechanical model; energy function; parametric instability; maximum power transfer;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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