计及储热装置的综合能源系统分层优化调度

Hierarchical Optimal Dispatch for Integrated Energy System With Thermal Storage Device

含有储热装置的综合能源系统能够实现能源的合理配置、有效降低系统的运行成本。然而,储热装置的引入增加了系统的耦合强度和变量维数,使得系统的优化调度变得更为困难。为此,该文利用能源集线器对综合能源系统进行建模并且引入储热因子来描述储热装置的状态,并提出一种分层优化调度策略对该系统进行求解。能源集线器优化调度层主要用于解决用户能源需求与能源集线器的优化调度问题;网络优化调度层主要用于解决各能源传输网络的最优分配问题。算例分析表明:提出的分层优化调度策略能够对该系统进行合理的优化调度,实现资源的合理配置,降低系统中的用能成本。

The integrated energy system with thermal energy storage device can realize the rational allocation of energy and effectively decrease the operation cost of the system.However,the introduction of thermal energy storage device increases the coupling strength and the variable dimension of the system,which makes the optimal scheduling of the system more difficult.To this end,this paper used energy hub for system modeling and introduce storage factor to describe the state of thermal storage device.Furthermore,a hierarchical scheduling strategy to solve the optimization model of the system was proposed.The energy hub scheduling layer is mainly used to solve the optimization scheduling problem of user energy need and energy hub;network optimization scheduling layer is mainly used to solve the optimal allocation problem of the energy transmission network.The case analysis shows that the hierarchical optimal dispatch strategy proposed can optimize reasonable scheduling of the system,allocate the resource rationally and reduce the energy cost.