摘要
目前,我国电网基本实现了全国互联,全国形成了东北-华北-华中、华东、西北、南方4个主要同步电网。未来我国同步电网的构想中将东北-华北-华中电网调整为华北-华中-华东同步电网,以特高压为骨干网架,全国形成华北-华中-华东、西北、东北、南方4个主要的同步电网。特高压同步联网可实现长距离、大容量输电,促进跨大区、跨流域水火电互济和更大范围资源优化配置提供网架支持,避免出现通过500kV交流线路联接大区电网存在的动态稳定问题,同时可解决500kV电网短路电流超标问题。
Currently, most of our nation＇s power grids are interconnected. There are four major nationwide synchronous grids, which are northeast- north china-center China, east China, northwest, and south grids. In the planned future synchronous power grid, the northeast-north china-center China grid will be adjusted to north china-center China-east China grid, and using UHV grid as backbone, four major synchronous grids, which are north china-center China-east China, northwest, northeast and north grids, will be formed. Interconnected UHV synchronous grids have such benefits as long-distance and large capacity power transmission; facilitating hydro and thermo power supplementation among large areas and drainage areas; provide grid support for optimum resource allocation; avoiding dynamic stability problems that exists in 500 kV AC lines when connecting large grids; solving the 500 kV grid short-circuit current over limit problem.
出处
《电力建设》
2007年第2期1-4,共4页
Electric Power Construction
关键词
特高压同步电网
联网效益
电网安全稳定性
UHV synchronous power grid
benefits from grid interconnection
power grid security and stability
