Coordinated operation of several industrial energy hubs (IEHs) to realize local energy management concepts at strategic points like industrial parks has attracted the attention of power grid operators worldwide. Deriving an operational model for integrating a large set of IEHs to trade energy in various markets is a fundamental challenge that has not yet been addressed. To overcome this research gap, this paper presents an optimal market participation strategy for a virtual energy hub (VEH) consisting of multiple IEHs and industrial consumers. The proposed strategy seeks to answer two questions: (1) how can a VEH operator minimize its operation cost when participating in different electricity markets, i.e., day-ahead market, real-time market, and local electricity market, as well as natural gas market? (2) how can ancillary services affect the economic performance of VEH? To address these questions, a two-stage robust-stochastic optimization model is proposed to minimize the total operation cost of VEH and compensate the operational risks associated with the existing uncertainties considering the operational limits of the power grid. To this aim, the advanced ancillary services, i.e., market-based demand response programs and transactive energy management, are used in line with the optimization problem. Furthermore, the role of the multi-supply facilities is included in the developed strategy to improve VEH flexibility. The feasibility of the proposed model is validated through a set of case studies on the modified IEEE 14-bus test system. Simulation results demonstrate that the total operation cost of the VEH decreases by at least 9.24% considering ancillary services.

中文翻译：

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战略运营虚拟能源中心，提供先进的工业园区配套服务


多个工业能源中心（IEH）协同运作，在工业园区等战略点实现本地能源管理理念，引起了全球电网运营商的关注。导出一个集成大量 IEH 来在不同市场进行能源交易的操作模型是一项尚未得到解决的根本挑战。为了克服这一研究空白，本文提出了由多个 IEH 和工业消费者组成的虚拟能源中心 (VEH) 的最佳市场参与策略。该策略旨在回答两个问题：（1）VEH运营商在参与不同电力市场（即日前市场、实时市场、当地电力市场以及天然气）时如何最大限度地降低其运营成本市场？ (2) 辅助服务如何影响VEH的经济绩效？为了解决这些问题，提出了一种两阶段鲁棒随机优化模型，以最小化VEH的总运行成本，并考虑电网的运行限制，补偿与现有不确定性相关的运行风险。为此，根据优化问题使用先进的辅助服务，即基于市场的需求响应计划和交互式能源管理。此外，多供应设施的作用也包含在提高 VEH 灵活性的制定战略中。通过对改进的 IEEE 14 总线测试系统的一组案例研究验证了所提出模型的可行性。仿真结果表明，考虑到辅助服务，VEH 的总运营成本至少降低了 9.24%。