| Summary: | 碩士 === 中原大學 === 電機工程研究所 === 100 === Growing depletion of natural resources and the Kyoto Protocol have aroused global attention to renewable energies. In Taiwan, the goal of real power generation from renewable energies is 4% of total generation in 2012 and 18% in 2020. Although renewable energies can mitigate the green gas effect, penetration of these distributed generations may change the operation scheme in the utility. One of the solutions for keeping the power system intact is to embed these distributed generations in micro-grids. This thesis investigates the transient and dynamic conditions for the first outdoor microgrid test bed in Taiwan, whose generation capacity is 406.5-kW. The microgrid system includes gas turbine, wind-turbine and PV generations. The models of rectifier and inverter are considered for both transient and dynamic simulations. The component outage and wind variation are studied in transient/dynamic analyses. This thesis also applies failure mode and effect analysis (FMEA) to analyze the reliability. Preliminary simulation results reveal that the established microgrid can serve as a test bed for investigating the performance of power converter, pitch-angle control, governor, and exciter. The outage time can be reduced and the reliabilities for the system can be improved by including the power electronic devices to the gas turbine.
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