Multiattribute choice of hydroelectric station dam site on the Indigirka river, the Sakha republic (Yakutiya)
The problem of hydroelectric station dam site choice has been formulated in the article. The factors that make the process of decision-making more complicated - multicriteriality, the lack of complete information, the impossibility to quantify some criteria are considered. The multiattribute approach to the promising dam site selection in a situation, when a decision- maker can only reproduce the superiority of one alternative over the other is proposed. The Indigirka River, the Republic of Sakha (Yakutiya), is considered as an example of the approach application. At the beginning of the analysis, three promising development centers and three possible dam sites of the hydroelectric station are outlined. At the first stage, the water-energy calculations are performed. The calculations are performed in four stages to determine the area and volume of the reservoir, its inactive storage capacity, guaranteed power generation. The purpose of the calculations is to work out the dam site indicators in the form of dependences on the hydroelectric station normal headwater level. At the second stage, the goals and criteria hierarchy of the dam site choice problem are developed. Each criterion is given a description and the alternatives comparison is performed. The method of analytic hierarchy process is applied. The characteristic feature of the analysis is that a decision-maker compares the alternatives not by the point estimates but by the dependencies on the normal headwater level of hydroelectric stations. Finally, the obtained results are discussed and the impact of individual factors on the comparison result is considered