| Summary: | 碩士 === 國立臺北科技大學 === 電機工程系所 === 94 === One of the problems that Taiwan power system faced at present is the load centers concentrate in the north, so the insufficient power must supply from the remain power of plants of central and south area. That will make the system be on the crisis of voltage collapse. Although Taipower has set up the third EHV transmission line from south to north for relieving a part of power delivery stress, it not only set up substations at all voltage levels but also additionally increase transmission circuits so that the problems of system stability become more complicated and operation point is more approach critical point. For rapid development of power electronics technology, FACTS power flow controllers have already occupied the important position in the control of the power system. The purpose of this thesis is to study the application of FACTS to improve the stability of power system.
In this study, power system simulator such as PowerWorld is used to calculate the power flow based on the peak-load data recorded in 2003. Through the analysis of Jacobian matrix, the indices corresponding to those weak buses of the system can be found. It is useful to determine the optimal allocation of FACTS devices for improving voltage stability of the system.
Furthermore, in order to discuss the effects of FACTS for the transient stability of system, we will simulate different kinds of faults for evaluate the effects of FACTS on generator come back to synchronization, and use the simulation results to verify its validity and feasibility on transient stability.
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