| Summary: | 碩士 === 清雲科技大學 === 電機工程研究所 === 93 === The main purposes of this thesis are to evaluate the availability and cost/benefit of an isolated PV-Wind hybrid generation system where the battery bank is attached. For the purposes of availability assessment, evaluative models such as atmospheric conditions, Photovoltaic (PV), Wind Turbine Generator (WTG), diesel engine, battery bank, and time varying load, are proposed. The Monte-Carlo method is then adopted to simulate the system availability. For cost/benefit calculation, according to the desired system’s availability, both the installation costs and fuel saving benefits of renewable energies are simultaneously calculated.
The main contributions of this proposed thesis are both in the adoption of general models for renewable equipments and the inclusion of battery bank in an isolated PV-Wind hybrid generation system, so as to practically evaluate the system availability and cost/benefit. There is a common disadvantage for synthesizing hourly radiation or wind speed data previously. It is that studies only focus on the radiation or wind speed data themselves, no matter what the latitude or atmospheric condition are. This can result in the location restrictions of applying the formulas. Therefore, it is important to consider the applied generality when building the component models. This thesis uses the Kinetic Battery Model (KBM) to determine the amount of maximum power that can be accepted by or withdrawn from the battery bank at each time step. This model treats a battery as a two-tank system. The advantage of this model is that it is more suitable for calculating the amount of power that can be accepted by or withdrawn from the battery bank by the time series format. Only three parameters are required to describe this two-tank system, and the values of these parameters can be determined by the battery discharge curve.
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