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Research on Low-frequency Oscillation on Resonance Mechanism in Multi-machine Power System

Author: WangShuo
Tutor: ZhaoShuQiang
School: North China Electric Power University
Course: Proceedings of the
Keywords: Low-frequency oscillation Resonance Mechanism Multi-machine system Intensive vibration mode Related units Participation Factor
CLC: TM712
Type: Master's thesis
Year: 2011
Downloads: 112
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Abstract


The low-frequency oscillation affect the safe and stable operation of the power system . This paper focuses on the power system resonance mechanism low frequency oscillations , focusing on system-related factors on the oscillation characteristics under intensive vibration mode multi- mode resonant oscillation , the oscillation characteristics of multi-machine system and its influencing factors , and other aspects of the problem . Power system low frequency oscillation resonance mechanism , each of the relevant factors in the analysis of the mechanism of low-frequency oscillation resonance oscillation characteristics , system oscillation characteristics . Resonant low - frequency oscillation of the oscillation mechanism in a multi-machine system is described by feature analysis . Two - area four - machine system , for example , through the simulation analysis of each oscillation mode resonance mechanism low frequency oscillations occur under the influence of the disturbance source unit participation factor as well as the mode of the damping of the oscillation characteristics . Local representative model of multi-machine system mode and regional mode is selected for analysis and comparison . Intensive characteristics of the oscillation mode of the power system , the establishment of a multi- machine system model , multi- mode resonant mechanism of low-frequency oscillation phenomenon occurred near the frequency of the oscillation modes in the research system . The relevant units of the two oscillation mode frequency suitable active disturbance will excite the two modes are resonant oscillation occurs . A pattern in the two intensive oscillation mode resonance oscillation , also occurred due to the contact mode units and will inspire another mode resonance oscillation phenomenon . Multi-mode unit for each oscillation mode , with the crew of the oscillation mode participation factor .

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Theory and Analysis > Power system stabilizer
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