考虑热环网时延的区域IES分层分布式优化方法

Distributed Hierarchical Optimization for Area Integrated Energy Systems Considering Heat Transmission Delay of Thermal Loop Network

由于能源市场的逐渐开放,传统的分层集中式调度难以满足含多运营主体的区域综合能源系统的隐私保护和独立决策需求。因此,针对由多个不同运营主体构成的分层式区域综合能源系统,基于目标级联算法将区域综合能源系统的优化调度模型按子区域进行解耦,提出了一种上、下层协同的双层分布式调度模型。将区域运营商作为上层协调系统,其根据各子区域的能源需求,通过交互协调各子系统的能源供应方式实现整个区域内的能源优化调度。针对下层子系统,将热网的延时特性视为储热装置纳入优化模型,可有效发挥热网的储能作用。最后,以某区域系统为例进行仿真分析,结果表明所提的双层分布式优化调度模型能够有效实现分层式多主体区域综合能源系统之间的协调调度,确保了各子系统的独立性。同时,考虑热网延时特性的优化模型可有效提高调度计划的准确性。

Due to the gradual opening of the energy market, the traditional centralized scheduling method is hardly to satisfy the privacy protection and independent decision-making requirements of the Regional Integrated Energy System(RIES) with multiple operators. Therefore, a two-level distributed optimization model is proposed for a RIES composed of multiple different operators. The proposed model is based on the target cascade algorithm to decoupled the original centralized model into a two-level distributed scheduling model.The regional operator are regarded as the upper coordination system. According to the energy demand of each sub region, the regional operator can achieve optimal energy schedule in the whole region by coordinating the energy supply of each sub-system interactively. For the lower sub regions, the time-delay of the heat network can be considered as the heat storage device into the optimization model, which can effectively play the role of heat network energy storage. Finally, taking a regional system as an example, the simulation results show that the two-level distributed optimal scheduling model proposed in this paper can effectively achieve the coordinated scheduling among multi-region integrated energy systems, and ensure the independence of each subsystem. The optimization model considering the time-delay of the heat network can effectively improve the accuracy of scheduling.