Multi-optimization target weighting method and system in construction of integrated energy system

Abstract

The invention discloses a multi-optimization target weighting method and system in construction of an integrated energy system, and the method comprises: determining a basic starting point based on the weights of a plurality of targets: converting a multi-target optimization problem into a single-target optimization problem through a weight coefficient, so as to solve the problem, therefore, the selection of the weight coefficient should guide the solution obtained by the single-target optimization problem to be close to the Pareto optimal solution set in the multi-target optimization problem and accord with the value for weighing and rejecting multiple indexes. When the algorithm is actually executed, firstly, the simplified single-target optimization problem which only considers the economical target is solved, and at the moment, other target function values do not reach optimal values. The requirements of targets except the economical efficiency are further improved, a series of initial values of weight coefficients are obtained through the KKT condition, finally, weight coefficient vector values capable of reaching or approaching the Pareto frontier are found through the NSGA-II algorithm, and finally weight coefficient vectors are determined from the weight coefficient vector values.

Description

Technical field [0001] The present invention belongs to the field of new energy and energy saving technology, and specifically involves a multi-optimized target empowerment method and system in a comprehensive energy system construct. Background technique [0002] In recent years, it has benefited from enhancing energy utilization efficiency, and the potential of high proportion of renewable energy is used, and the integrated energy system has become an important part of my country's energy transformation. In the integrated energy system, different energy forms are coordinated in time and space, thereby achieving more reliable, economical and low-carbon energy supply. [0003] In the planning and operation of integrated energy system, there are many objectives that need to be considered, including minimizing investment operating costs, minimizing carbon emissions, maximizing renewable energy penetration and minimizing abandonment, etc., these goals There may be a conflict between...

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Problems solved by technology

[0005] The purpose of the present invention is to propose a multi-optimization target weighting method and system in the construction of an integrated energy system based on Pareto optimality, aiming to achieve Pareto optimality in the planning and operation of the integrated energy system, and to find the weight coefficient, Solve the irrationality of manually setting multi-objective weights in the planning and operation of the current integrated energy system, which leads to the damage of the planning and decision-making results of the integrated energy system.

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