The production process of iron and steel is accompanied by a large amount of energy production and consumption. Optimal scheduling and utilization of these energies within energy systems are crucial to realize a reduction in the cost, energy use, and CO₂ emissions. However, it is difficult to model and schedule energy usage within steel works because different types of energy and devices are involved. The energy hub (EH), as a universal modeling frame, is widely used in multi-energy systems to improve its efficiency, flexibility, and reliability. This paper proposed an efficient multi-layer model based on the EH concept, which is designed to systematically model the energy system and schedule energy within steelworks to meet the energy demand. Besides, to simulate the actual working conditions of the energy devices, the method of fitting the curve is used to describe the efficiency of the energy devices. Moreover, to evaluate the applicability of the proposed model, a case study is conducted to minimize both the economic operation cost and CO₂ emissions. The optimal results demonstrated that the model is suitable for energy systems within steel works. Further, the economic operation cost decreased by 3.41%, and CO₂ emissions decreased by approximately 3.67%.

钢铁生产过程伴随着大量的能源生产和消耗。在能源系统内优化调度和利用这些能源对于实现降低成本、能源使用和 CO ₂至关重要排放。然而，由于涉及不同类型的能源和设备，因此很难对钢铁厂内的能源使用进行建模和安排。能源枢纽（EH）作为通用建模框架，广泛应用于多能源系统，以提高其效率、灵活性和可靠性。本文提出了一种基于 EH 概念的高效多层模型，旨在系统地对能源系统进行建模并调度钢厂内的能源以满足能源需求。此外，为了模拟能源装置的实际工作情况，采用曲线拟合的方法来描述能源装置的效率。此外，为了评估所提出模型的适用性，进行了一个案例研究，以最大限度地降低经济运行成本和 CO ₂排放。优化结果表明该模型适用于钢厂内的能源系统。此外，经济运行成本下降3.41%，CO ₂排放量下降约3.67%。