| Summary: | 碩士 === 義守大學 === 電機工程學系 === 101 === Excitation System is composed of exciter and automatic voltage regulator, and by adjusting the field voltage of the synchronous machine, it then controls generator terminal voltage. Excitation system model shows the characteristics of excitation system by mathematics. So far, some excitation systems are too old to find the record of the parameters. Also, some synchronous generators have upgraded parts of their system, resulting in a large difference in its parameters. Therefore, the correctness of the excitation system parameters is questionable. Using incorrect parameters lead to an incorrect simulation result, so revalidation of the excitation system is crucial. This paper uses PSSE (Power System Simulator for Engineering), a simulation software with international credibility. Because of the built-in function not meeting the research requirement, GMB(Graphical Model Builder) self-made model is used to replace PSSE built-in model. In this paper, we observed the consistency of GMB self-made model and PSSE built-in model. The method of validation is to do the comparison of field tests data and simulated data. Step response test is the basis for excitation model parameters estimation. Then, we verified the estimation parameters by using load-shedding (Mvar) test.
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