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Dynamic stability analysis of an industrial power system

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5 Author(s)
Wei-Jen Lee ; Energy Syst. Res. Center, Texas Univ., Arlington, TX, USA ; Mo-Shing Chen ; Gim, J.-H. ; Yoshimura, K.
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An instance of poorly damped oscillations in computer simulation has been observed in the connection of an industrial cogeneration power system to the utility grid. An extensive investigation of this problem is presented. Both time-domain and frequency-domain analyses are used to determine the fundamental characteristics of the system, the major factor of the system oscillation, and a possible solution for the problem. Study results indicate that installation of a PSS (power system stabilizer) may improve the dynamic stability problems of the system. However, it requires accurate system information in the design stage and on-site field tuning after installation. Retuning services are required if the system configuration and/or generation conditions are changed dramatically. Several examples have shown the PSS did not reach its expected performance due to the inaccurate system parameters that were used to determine the parameters of the PSS. Therefore, more system operation information is desired before installation of a PSS

Published in:

Industry Applications Society Annual Meeting, 1993., Conference Record of the 1993 IEEE

Date of Conference:

2-8 Oct 1993