Significant welfare gains can be achieved by interlinking electric power systems. A major improvement in this regard has been the implementation of flow-based market coupling (FBMC) in Central Western Europe [Réseau de transportd'électricité (RTE) et al., 2015]. However, recent assessments [Entso-E, 2018] have shown that FBMC is not yet fully understood. We contrast the FBMC domain with the feasible regions in a nodal market design based on a stylized example. Our analysis reveals the essential elements of FBMC, including its positive features. We also show that certain FBMC approximations will always affect welfare to a certain extent.

通过将电力系统互连可以显着提高福利水平。在这方面的一个重大改进是在西欧中部实施了基于流量的市场耦合（FBMC）[Réseaudetransported'électricité（RTE）等人，2015年]。但是，最近的评估[Entso-E，2018年]显示，FBMC尚未完全被理解。我们基于一个程式化的例子，将FBMC域与节点市场设计中的可行区域进行了对比。我们的分析揭示了FBMC的基本要素，包括其积极特征。我们还表明，某些FBMC近似值始终会在一定程度上影响福利。