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世界发达国家十分重视城市电网的现代化建设与改造,城网电气技术装备发展迅速,是一个不断认识、探索、开拓、创新的历程,通过实践逐步完善并使之规范化。即使已经达到相当高的水平,技术创新至今也未停顿。世界发达城网系统及其技术装备发展的主要特征是:按照城市建设发展的规模,合理选择供配电系统的电压等级层次匹配、优化网络结构。
Developed countries in the world attach great importance to the modernization and transformation of urban power grids. The rapid development of electrical and technical equipment in urban networks is a process of continuous awareness, exploration, development, and innovation. It is gradually perfected and standardized through practice. Even though it has reached a fairly high level, technological innovation has not yet stopped. The main features of the development of the world’s advanced urban network system and its technical equipment are: In accordance with the scale of urban construction and development, a reasonable choice of voltage level matching of the power supply and distribution system, and optimize the network structure.