摘要
在這個研究中，特徵值和Matlab/Simulink分析方法應用到研究動態穩定度研究；並且是以單一同步發電機連接到無限匯流排進行模擬。 本報告令人感興趣的是；對電力系統同步發電機穩定度行為進行模擬。當以可變更的參數作為操作條件時；系統的特性可經由一階微分方程式描述。本文擬探討電力系統的心臟裝置；即同步發電機之動態行為（dynamic behavior），並且利用帕克轉換（park s trans-formation）原理；將同步發電機之數學方程式，由a-b-c相之定子固定參考軸轉換成o-d-q相之轉子旋轉參考軸。 本報告所提電力系統同步發電機模擬的重點在於；以時域分析所得的參數值代入由頻域分析所得七階一次微分方程式中的未知參數；並由系統的特徵值﹝eigen values﹞是否座落於複數平面的左半平面可供決定系統的穩定狀態。本報告並以數值例研究為例子；作為分析模擬同步發電機的運轉情形。
並列摘要
In this study, the eigenvalue and Matlab/Simulink analysis methods are applied to investigate the dynamic stability of a one-machine-to-infinite-bus power system under small perturbations, between sudden and major changes. This paper concerned with some aspects of the design problem, particular the dynamic performance, of interconnected power system .characteristics of the various components of a power system during normal operating conditions and during dist- urbances will be examined, and effects on the overall system performance will be analyzed, Emphasis will be given to the transient behavior in which the system is described mathematically by ordinary differential equation,in the mathematical description of the synchronous machine is obtained if a certain transformation of variables is performed, The transformation used is usually called Park s trans- formation. The stability problem is concerned with the behavior of the synchronous machines after they have been perturbed, the transient following a system perturbation is oscillatory in nature；but if the system is stable, these oscillation will be damped toward a new quiescent operating condition, These oscillations, however are reflected as fluctuations in the power flow 0ver the transmission lines, if the oscillatory response of a power system during the transient period following a disturbance is damped and the system settles in a finite time to a new steady operating condition, we say the system is stable. Adjustment to the new operating condition is called the transient period, The system behavior during this time is called the dynamic system performance, which is of concern in defining system stability, The main criterion for stability is that the synchronous machines maintain synchronism at the end of the transient period.
參考文獻
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