计及热力系统热特性的热源容量优化配置及经济性分析

Optimal Capacity Allocation of Heat Power Supply and Its Economic Analysis Considering Thermal Characteristics of Heat Energy System

中国积极开展火电灵活性改造试点工作,多类型热源参与到风电消纳中并发挥重要作用,合理的热源容量规划可以有效提升风电消纳。考虑到热力系统具有天然的储热特性,在热源容量规划中考虑热网和热用户的储热特性,实现电力系统和热力系统联合优化,可进一步减少热源配置的经济成本。首先建立热力系统各组成元件(热源、热网和热负荷)的热特性模型;然后,构建以热源年经济费用最小为目标的多种热源容量优化规划的时序生产模拟模型;最后,基于该模型研究不同场景下热源配置方案及经济性,为热源规划提供参考。

China has actively carried out the pilot work for flexibility transformation of thermal power.Multiple types of heat sources have played an important role in accommodation of wind power,and reasonable heat source capacity planning can effectively improve wind power accommodation.With consideration of the heat storage characteristics that the thermal system naturally has in heat power capacity planning,the joint optimization of power system and thermal system can be realized,and the economic cost of heat source allocation can be further reduced.Firstly,a thermal characteristic model is established for each part of the thermal system,including heat source,heat supply network,and heat load;And then,a time-series production simulation model is constructed for optimal capacity planning of multiple heat sources,with the goal of minimizing the annual economic cost of the heat source;Finally,based on the constructed model,the heat source allocation schemes and their economic comparison are studied under different scenarios,which can provide a reference for heat source planning.