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区域电力系统差异是产生联网效益的前提条件,全国电力联网格局的初步形成,又为发挥联网效益奠定了物质基础。我国地域辽阔、资源分布不均,不同地区电源结构差异较大;地区负荷特性南北季节性差别明显、东西存在时差,客观上决定了我国具有取得联网效益的可能。作者通过回顾电网发展历程,分析电网运行数据,总结了电网发展带来的错峰效益、水火互济效益、跨流域调节效益和规模效益等一系列联网效益。
Regional power system differences are the prerequisites for networking benefits, the initial formation of the national power grid pattern, and lay the material foundation for the development of networking benefits. China has vast territory and uneven distribution of resources, and the power supply structure varies greatly in different regions. Regional load characteristics have obvious seasonal differences between North and South, and there is a time difference between East and West, which objectively determines the possibility of China having access to network benefits. By reviewing the development history of power grid, the author analyzes the operation data of power grid, and summarizes a series of networking benefits such as shifting peak efficiency, mutual benefits of water and fire, adjusting benefits and economies of scale of inter-basin.