The transformation of the energy system requires new methods for its modeling and simulation, as established methods are facing problems in representing the increasing complexity and flexibility. We present the modeling and simulation framework MOCES that is based on the modeling language Modelica. The novelty of MOCES is the explicit modeling of the processes that ensure the balancing of production and consumption and which link the physical system with the energy markets. In this contribution, we show how MOCES can be used to model and simulate the German power system with detailed spatial representation by adapting and extending the ELMOD-DE model. The adapted model is modified to investigate the effect of local storage systems that aim at minimizing the exchange of electricity with the upstream grid. We provide findings on their effect to the grid usage, the grid stability, and the economic performance of the storage systems. In addition, we examine the influence of an increasing number of local storage systems on their economic performance.

中文翻译：

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局部灵活性的建模和仿真及其对整个电力系统的影响

能源系统的转换需要新的建模和仿真方法，因为已建立的方法在表示日益增加的复杂性和灵活性方面面临着问题。我们介绍基于建模语言Modelica的建模和仿真框架MOCES。MOCES的新颖之处在于对过程进行了显式建模，以确保生产与消耗之间的平衡，并将物理系统与能源市场联系起来。在本文中，我们将展示如何通过改编和扩展ELMOD-DE模型，利用MOCES来对具有详细空间表示形式的德国电力系统进行建模和仿真。对修改后的模型进行了修改，以研究旨在最大程度地减少与上游电网的电力交换的本地存储系统的影响。我们提供有关它们对电网使用，电网稳定性和存储系统经济性能的影响的发现。此外，我们研究了越来越多的本地存储系统对其经济性能的影响。