We propose a multi-objective bi-level optimization model for analyzing the different investment options (in natural gas pipelines and regasification terminals) within the EU framework under a market perspective, considering the different interest of market participants and the multiple criteria that need to be achieved simultaneously (i.e. market integration, security of supply and competition). The model consists of the objectives of the network planner at the upper level optimizing a multi-objective function and a lower level that represents the downstream European gas market. The model is used for the assessment of the optimal infrastructure investment in the North-South Gas Interconnections in Western Europe.

考虑到市场参与者的不同兴趣和需要满足的多个标准，我们提出了一种多目标的双层优化模型，用于分析欧盟框架内在市场角度下的不同投资选择（在天然气管道和再气化终端中）同时实现（即市场整合，供应安全和竞争）。该模型由网络规划者的目标组成，高层在规划中优化了多目标功能，而高层则代表了下游欧洲天然气市场。该模型用于评估西欧南北天然气互连中的最佳基础设施投资。