城市电网目标网架构网模式研究

合理科学的城市电网远景目标电网结构，可以确保电网的安全运行与长期稳定。根据电网供电、网络接线、电源分布等特点，对国内外目标网架的构网模式进行梳理分析，详细阐述了内外双环网构网模式和组团化构网模式，提出各类型构网模式的优劣。同时分析了北京、上海等国内典型大型城市先进电网，并对其电网的网架结构、运行经验和设计原则进行研究，尤其是500 kV终端变电站的供电模式及运行方式，为其他城市电网发展提供参考借鉴。

Study on Network Frame Models of Urban Target Power Grid

A reasonable and scientific vision of the urban power grid structure can ensure the safe operation of power grids and long-term stability. According to the characteristics of power supply, network connection and power distribution, this paper combs and analyzes the network frame models of domestic and foreign target power grid, and illustrates double-loop network frame model and Grouped subarea division model. The paper also puts forward the advantages and disadvantages of various types of network models. Then it focuses on the analysis of typical large city grid in China, such as Beijing and Shanghai, and analyzes the grid structure, operation experience and design principles of Beijing and Shanghai power grid, especially operation mode of 500 kV terminal substations, which provides references for the development of other cities.