| Summary: | 碩士 === 國立臺北教育大學 === 資訊科學系碩士班 === 98 === In a power system, the degree of low frequency oscillation and damping ratio of the system are the most important factors influencing the electro-mechanical output quality. Hence, the improvement of the damping ratio will be the index of the power system stabilizer design. The purpose of this thesis is to study the power system stability with low frequency oscillation .In the beginning of the thesis, we describe the principle and characteristics of low frequency oscillations, classify model systems of low frequency oscillations and indicate influences on low frequency oscillations. Furthermore, the optimal reduced order method is applied to design the optimal decentralized power system . Finally, the proposed methods are illustrated by simulation results of single and
multi power system .
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