This paper presents an optimization-based approach to address the problem of the optimal daily energy scheduling of interconnected power systems in electricity markets. More specifically, a Mixed Integer Linear Programming model (MILP) has been developed to address the specific challenges of the underlying problem. The main focus of the proposed framework is to examine the importance and the impacts of electricity interconnections and cross-border electricity trade on the scheduling of power systems, both at a technical and economic level. The applicability of the proposed approach has been tested on an illustrative case study including five power systems which can be interconnected (with a certain interconnection structure) or not. The proposed model determines in a detailed and analytical way the optimal power generation mix, the electricity trade among the systems, the electricity flows (in case of interconnection options), the marginal price of each system, as well as it investigates through a sensitivity analysis the effects of the available interconnection capacity on the resulting power production mix. The work demonstrates that the proposed optimization approach is able to provide important insights into the appropriate energy strategies followed by the market participants, as well as on the strategic long-term decisions to be implemented by investors and/or policy makers at a national and/or regional level, underlining potential risks and providing appropriate price signals on critical energy infrastructure projects under real market operating conditions.

本文提出了一种基于优化的方法来解决电力市场中互连电力系统的最佳每日能源调度问题。更具体地说，已经开发了混合整数线性规划模型（MILP）以解决潜在问题的特定挑战。拟议框架的主要重点是在技术和经济水平上研究电力互连和跨境电力贸易对电力系统调度的重要性及其影响。所提出的方法的适用性已在一个说明性案例研究中进行了测试，该案例研究包括五个可以互连（具有一定互连结构）的电源系统，也可以不互连。拟议的模型以详细和分析的方式确定了最佳的发电组合，系统之间的电力交易，电流（在使用互连选项的情况下），每个系统的边际价格，以及它通过敏感性分析研究可用互连能力对最终电力生产结构的影响。这项工作表明，所提出的优化方法能够为市场参与者遵循的适当能源战略以及将由国家和/或国家的投资者和/或决策者实施的战略长期决策提供重要见解。或区域一级，强调潜在风险并在实际市场运营条件下为关键能源基础设施项目提供适当的价格信号。每个系统的边际价格，以及它通过敏感性分析来调查可用互连容量对产生的电力生产组合的影响。这项工作表明，所提出的优化方法能够为市场参与者遵循的适当能源战略以及将由国家和/或国家的投资者和/或决策者实施的战略长期决策提供重要见解。或区域一级，强调潜在风险并在实际市场运营条件下为关键能源基础设施项目提供适当的价格信号。每个系统的边际价格，以及它通过敏感性分析来调查可用互连容量对产生的电力生产组合的影响。这项工作表明，所提出的优化方法能够为市场参与者遵循的适当能源战略以及将由国家和/或国家的投资者和/或决策者实施的战略长期决策提供重要见解。或区域一级，强调潜在风险并在实际市场运营条件下为关键能源基础设施项目提供适当的价格信号。