Economic Analysis of Mid-Term and Long-Term Power Transmission Corridors Access to Beijing and New Power Transmission and Transformation Projects in Beijing

Under the goals of carbon peak and carbon neutrality, accommodating and integrating a high proportion of renewable energy is a key challenge we currently face. The power grid as a crucial bridge between power generation and consumption, plays a significant role in ensuring electricity supply, integrating renewable energy, and optimizing power dispatch. However, as electricity trading matures, traditional grid transmission and transformation project planning methods are no longer sufficient to meet the capacity assessment needs in the electricity market environment. Therefore, it is necessary to consider electricity market factors when planning grid investments to optimize the economic performance of the main grid. This paper utilizes an 8760-hour planning and simulation platform to analyze the 2035 main grid planning scheme around Beijing proposed by the North China Branch of the State Grid. Taking into account the power spot market environment and the long-term source-network-load characteristics of the Beijing-Tianjin-Tangshan area, it examines the economics of the mid-term and long-term access corridor planning scheme and the transmission and substation project around Beijing, providing strong support for the feasibility of the planning scheme.