城市电网中压配网升压为20kV的探讨

随着城市电力负荷密度的增大,建设20 kV配电网成为现代中压配电网的发展趋势。文章从电网规划的角度出发,通过电压层次、短路容量、变电容量、线路走廊及站点布置、占地资源节约、投资费用及中压配电网技术经济指标进行分析和比较,探讨了中压配电网升压为20 kV对电网规划的影响。

The Discussion on Adopting 20 kV Voltage Level for Distribution Network in Urban Power Grid

With the increasing of electric load density in urban power grid,the construction of 20 kV voltage level for distribution network becomes the modern trend in medium voltage distribution network.The paper discusses the influences of medium voltage distribution network which boost to the 20 kV form the point of view of network planning,by making analysis,comparison through technical and economic indices,the voltage levels,short-circuit capacity,transformer capacity,transmission line corridors,site layout of s...