4.6 Article

A Method of Multi-Objective Optimization and Multi-Attribute Decision-Making for Huangjinxia Reservoir

Journal

APPLIED SCIENCES-BASEL
Volume 12, Issue 13, Pages -

Publisher

MDPI
DOI: 10.3390/app12136300

Keywords

reservoir operation; objectives correlation analysis; multi-objective optimization; multi-attribute decision making; NSGA-II-SEACODE

Funding

  1. National Natural Science Foundation of China [51709222, 51979221]
  2. Science and Technology Program of Shaanxi Province [2020slkj-16, 2019JLZ-15]

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This study proposed a multi-objective optimization and multi-attribute decision-making method for reservoir operation, using the NSGA-II-SEABODE algorithm to obtain decision-making schemes. The case study on the Huangjinxia Reservoir showed that the method can promote efficient utilization of water resources and improve the comprehensive benefits of reservoirs.
The objectives of flood control, power generation, water supply and ecology for reservoir operation are neither completely coordinated nor completely opposed, and its optimal operation and decision-making is very complicated. This study proposed a method of multi-objective optimization and multi-attribute decision making for reservoir operation (MODRO). The correlation analysis method was used to analyze the competitive relationship among the extracted objectives, and the multi-objective optimal operation model was constructed. The NSGA-II-SEABODE algorithm was applied to solve the MODRO problem. The objective extraction, model construction, optimization solution and scheme selection were coupled to form a multi-objective optimization and multi-attribute decision making method with the whole process of Objective-Modeling-Optimization-Selection. Huangjinxia Reservoir, which is located in Shaanxi, China, was selected as the case study. The results show that: (1) Quantifying the degree of conflict among objectives makes the construction of the multi-objective optimal operation model more reasonable. (2) The NSGA-II-SEABODE algorithm are used to obtain the decision-making scheme, which provides decision-making basis for managers. (3) For Huangjinxia Reservoir, water diversion is negatively related to power generation and ecology, and power generation is positively related to ecology. The results can promote the efficient utilization of water resources, improve the comprehensive benefits of reservoirs, and provide decision-making support for actual reservoir operation.

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