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Low Frequency Oscillations in Longitudinal Power Systems: Experience with Dynamic Stability of Taiwan Power System

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3 Author(s)
Hsu, Yuan-Yih ; Department of Electrical Engineering National Taiwan University Taipei, Taiwan Republic of China ; Shyue, Sheng-Wehn ; Su, Chung-Ching

Sustained low frequency oscillations have been observed in Taiwan power system which is of longitudinal structure. It is the purpose of this paper to examine the various factors affecting the damping characteristics of these oscillations which caused dynamic instability problem in the operation of Taiwan power system. It is observed that the amount of power flow on the EHV transmission line and the characteristics of load have a significant effect on the damping of the system while the speed-governing system and the gain of automatic voltage regulator have only a minor one. Detailed investigation using both the frequency domain and time domain approaches also reveals that power system stabilizers can be employed as an effective means for improving dynamic stability of Taiwan power system.

Published in:

Power Systems, IEEE Transactions on  (Volume:2 ,  Issue: 1 )

Date of Publication:

Feb. 1987

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