Study of hydroelectric power capacity using the rational method in the Lawe Sempali subwatershed, Aceh Province
Nowadays, electricity is a basic human need that must be available. Therefore, efforts to obtain electrical energy from renewable natural resources continue to be explored, especially water energy from watersheds and sub-watersheds. Aceh Province is a relatively widely available area of watersheds and sub-watersheds. This study aims to analyze and categorize the potential of electric power generated by the Lawe Sempali sub-watershed, Aceh province, as a source of hydroelectric power. The method used in this research is the study of literature and field studies. The rainfall analysis of the ten year return period plan was carried out with four approaches, namely (i) normal distribution method (ii) normal log distribution method, (iii) Gumbel distribution method, and (iv) Pearson III log distribution method. Discharge plans that occur are analyzed using the rational method. The categorization of the power capacity of hydroelectric power plants is based on the capacity that can be produced by the sub-watershed. The results of this study were to report that the Lawe Sempali Sub-watershed has the potential to be a source of hydroelectric power generation in the category of micro-hydro and or small-hydro power plants. The capacity of electric power generated with planned discharge in the shortest return period (2 years) is a minimum of 68.21 KW (head 2 m) and a maximum of 3.41 MW (head 100 m).
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