To comprehensively assess the operational performance of an integrated energy system,this paper introduces a multi-objective optimal operational method that takes into account the variable efficiency of energy conversion devices.First,the operational characteristic curves of energy conversion devices with variable efficiency are segmented and linearized.Second,a multi-objective optimal scheduling model is established considering the economic costs,carbon emissions and comprehensive energy utilization efficiency.The non-convex nonlinear problem with comprehensive energy utilization efficiency is solved by the Charnes-Cooper transformation.Finally,to solve the multi-objective model,the normalized normal constraint method is employed to generate a Pareto optimal set with uniform distribution.Following this,the improved entropy weight double-base point method is used to identify the compromise optimal solution.The modified IEEE 33-bus power distribution network and 8-bus heating network coupled integrated energy system are simulated and analyzed.The results show that the optimized model and algorithm are capable of obtaining an operational scheme that considers economy,low-carbon,and high efficiency of an integrated energy system.This offers decision makers scientific references for decision-making.
关键词
综合能源系统/多目标优化/可变效率/规格化法平面约束法/改进熵权双基点法
Key words
integrated energy system/multi-objective optimization/variable efficiency/normalized normal constraint method/improved entropy weight double-base point method
维普
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