论文标题

在混合市场中的多级能源管理与分布稳定的计划

Multi-level Coordinated Energy Management for Energy Hub in Hybrid Markets with Distributionally Robust Scheduling

论文作者

Cao, Jiaxin, Yang, Bo, Zhu, Shanying, Chung, Chi Yung, Guan, Xinping

论文摘要

维持能量平衡和经济运行对于多能系统(例如能量枢纽)是重要的。但是,通常在不同时间范围内经常变化且不可预测的不确定性来挑战。在此范围下,本文考虑了源负载和市场价格的不确定性,研究了日期和日期条件的协调能源管理问题。请注意,关于不确定性的分布的确切知识可能是在日前阶段决策之前无法访问的。提出了一种基于分配稳健方法的两阶段机会受限的模型,并提出了含糊的力矩信息,以使调度策略免受最坏情况概率分布的侵害。第一阶段致力于通过优化日益动力,天然气和碳市场中的招标策略来获得更多的能源套利和操作灵活性。第二阶段的重点是优化最差的预期操作成本。它提供了强大的能源设备和负载调度策略,以参考随后的日期安排。关于电气和热组件的不同变化,日内两次尺度的协调逐步实施。能源调度进行循环重新分配,以最大程度地减少运营和罚款成本。可能的能量不平衡也是通过这种方式补偿的。由于能源管理计划是非线性,偶然限制和多阶段的,因此线性化和双重变换技术旨在增强程序的障碍性。实验结果表明,与相应的对比病例相比,开发的多层框架导致碳排放量降低37%,并降低能源成本3%。获得的策略验证了鲁棒性和最佳性之间的良好权衡。

Maintaining energy balance and economical operation is significant for multi-energy systems such as the energy hub. However, it is usually challenged by the frequently changing and unpredictable uncertainties at different timescales. Under this scope, this paper investigates the coordinated energy management problem for day-ahead and intra-day conditions considering uncertainties of source-load and market prices concurrently. Note that the precise knowledge of distributions about uncertainties may be unaccessible before the decision-making in day-ahead phase. A two-stage chance-constrained model based on distributionally robust approach with ambiguous moment information is proposed to immunize scheduling strategies against the worst-case probability distributions. The first stage is dedicated to obtaining more energy arbitrage and operation flexibility by optimizing bidding strategies in day-ahead power, natural gas and carbon markets. The second stage focuses on the optimization of worst-case expected operation cost. It provides a robust energy equipment and load scheduling strategy for the reference of subsequent intra-day arrangements. With respect to different variations of electrical and thermal components, an intra-day two-timescale coordination is implemented step by step. The energy scheduling is re-dispatched circularly to minimize the operation and penalty costs. The possible energy imbalance is also compensated by this way. As the energy management program is nonlinear, chance-constrained and multi-stage, linearization and dual transformation techniques are designed to enhance tractability of programs. Experimental results show that the developed multi-level framework results in a carbon emission decrease of 37%, and reduces energy cost averagely 3% compared with corresponding contrasting cases. The obtained strategy validates a good tradeoff between robustness and optimality.

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