Abstract
Nuclear energy has been identified as an economical and environmentally clean source of electricity generation in Bangladesh. Nuclear power plants (NPP) are designed to serve as the base-load plant with a lower ramp rate of power change, stringent voltage and frequency margin. Moreover, the nuclear reactor needs a reliable long-term shutdown cooling that consumes huge electricity from the grid under strict voltage and frequency regulations. This paper addresses a modeling approach including the development of a fault-tree model for reliability evaluation of an electric grid system to accommodate an NPP. The analysis of the existing grid system in Bangladesh identified the areas of improvement in which the programs for grid frequency control, modifying governors of the operating plants and reduction of seasonal load variation are the most significant. This study also revealed that the development of a detailed fault tree model is essential to identify the most susceptible elements of the grid system and resources can be allocated accordingly to minimize the risk. The hindrances related to grid development are also discussed in this paper.
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