面向中长期电力供需平衡的季节性储热建模与优化规划方法OA

High proportion of renewable energy and low-carbon electrification of end-use energy have become critical features in the evolution of the supply-demand dynamics in the future new power systems.However,the seasonal mismatch contradiction between clean heating demand and renewable energy output has become increasingly severe.This paper focuses on achieving long-term thermal storage through seasonal thermal storage technology to facilitate large-scale accommodation of renewable energy and cross-seasonal utilization of renewable thermal energy.First,a refined seasonal thermal storage model for the optimal planning is established to describe the time-varying heat-loss characteristics of thermal storage tanks across seasons.On this basis,the established seasonal thermal storage model is embedded into the power planning problem to achieve optimal configuration of seasonal thermal storage within the system.Finally,a modified HRP-38-bus test system is used to analyze and validate the effectiveness of the proposed modeling method,and the role of seasonal thermal storage in enhancing renewable energy accommodation and renewable heating is discussed.