摘要
Abstract
With the implementation of the"double carbon"goal,increasing integration of new energy sources within grids,planned decommissioning of thermal power plants,and accelerated construction of pumped storage solutions as flexible regulating resources,rational planning has emerged as the most crucial factor ensuring the stability of power systems and guaranteeing the sustainable conversion of multiple energy forms.This study investigates optimization methods for pumped storage capacity planning and dispatching,considering scenarios of new energy utilization.Furthermore,it constructs a two-layer optimization model for pumped storage considering the minimization of the whole-life cycle costs,carbon emissions,and abandonment penalty costs of each power source as its upper-layer optimization objectives and the minimization of the carbon emissions and wind power fluctuations of each power source as its lower-layer optimization objectives.Subsequently,the study compares the star crow,genetic,and gray wolf algorithms,focusing on their advantages and disadvantages.By adaptively optimizing the parameters of the star crow algorithm,the study identifies the algorithm with superior optimization performance and speed and integrates it with CPLEX to solve the two-layer optimization model.Additionally,the upper and lower optimization objectives of the model are established by introducing a step penalty mechanism for carbon emissions and new energy abandonment.Experimental results reveal that regional power grids must accelerate the construction of pumped storage facilities by approximately 74.21%and reasonably decommission thermal power by approximately 40.79%.Remarkably,the developed model effectively reduces the comprehensive system cost by approximately 5.80%,decreases the abandonment rate of wind and solar power by approximately 20.43%,lowers carbon emissions by approximately 25.96%,and smooths out wind and solar power fluctuations by approximately 1.18%.These outcomes validate the effectiveness of the model and highlight the importance of rational planning,offering valuable references for the medium-and long-term planning of power systems.关键词
高比例新能源/抽水蓄能/阶梯惩罚成本/双层优化Key words
high percentage of new energy/pumped storage/step penalty costs/two-tier optimization分类
信息技术与安全科学
