A large number of renewable energy resources are integrated into the integrated energy system (IES), which complicates the IES dispatching, especially for accommodating anti-peak-regulation of wind power. To cope with that, a day-ahead IES optimal dispatching method considering power to gas (P2G) units and dynamic pipeline networks is proposed in this article. First, by introducing P2G, an IES structure based on energy hub is established to implement bidirectional flow between power and natural gas systems. Second, the dynamic characteristic of gas pipelines is modeled with energy storage capability, which can improve the flexibility of the natural gas system by regulating the pressure level of pipeline networks. Furthermore, a cooperative dispatching strategy for P2G and pipeline storage capability is presented to catch the flexibility of IES, in which the unbalanced wind power is converted into natural gas and stored in pipeline networks. Finally, case study is verified on the modified IEEE39-NGS20-HS20 and IEEE118-NGS40-HS20 IES systems with different typical wind power scenarios. The proposed cooperative dispatching strategy can effectively increase wind power consumption and reduce operating cost of the whole system without high computation burden.

中文翻译：

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考虑电转气和动态管网的综合能源系统日前优化调度


大量的可再生能源资源被纳入综合能源系统（IES），这使得综合能源系统的调度变得复杂，特别是为了适应风电的反调峰。针对这一问题，本文提出了一种考虑电转气（P2G）机组和动态管网的日前IES优化调度方法。首先，通过引入P2G，建立基于能源枢纽的IES结构，实现电力和天然气系统之间的双向流动。其次，利用储能能力对天然气管道的动态特性进行建模，可以通过调节管网压力水平来提高天然气系统的灵活性。此外，为了抓住IES的灵活性，提出了P2G和管道存储能力的协同调度策略，其中不平衡的风电被转换为天然气并存储在管网中。最后，在不同典型风电场景下，对改进后的IEEE39-NGS20-HS20和IEEE118-NGS40-HS20 IES系统进行了案例研究验证。所提出的协同调度策略可以在不增加计算负担的情况下有效增加风电消耗并降低整个系统的运行成本。