| Summary: | 碩士 === 聖約翰科技大學 === 電機產業研發碩士專班 === 99 === This thesis focuses on the economic analysis for the distributed generation equipment and energy storage devices of the actual micro-grid of the St. John's University. The micro-grid is a small power system including various distributed generations and energy storage devices. In comparison with the traditional public electric network, the micro-grid has advantages of a high economy, using more renewable energy, a high reliability in power supply, and providing regional energy independence. The development of micro-grid in Taiwan falls behind those of developed countries, There remains few relative research on the economic analysis of micro-grid. This thesis adopts a net present value (NPV) method and a year-by-year internal rate of return (IRR) calculation for the economic analysis of various distributed generations and energy storage devices. The break-even point is then calculated for the equipment with positive net present value, and the marginal cost is then calculated using the cost sensitivity analysis for the equipment with negative net present value.
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