Simulations of Synchronous Generator in Power System

• Main Authors: Wen-Liang Su, 蘇文良
• Other Authors: Hong-Tzer Yang
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/31147246266544050264

碩士 === 中原大學 === 電機工程研究所 === 93 === 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.