上海配电网35kV直降380V配电方式的探析

Analysis of distribution mode with Shanghai 35 kV distribution network directly transformed to 380 V

根据上海中心城区规划建设要求,电力架空线路将逐渐电缆化和入地敷设,这给电网改造、优化结构和简化电压等级提供了良好环境。由于上海中心城区负荷密度不断提升,现有35kV/10kV/380V配电方式降压层次显多,建议在高负荷密度的城区引入35kV直降380V的配电方式。文章对35kV/380V与现有配电方式进行了分析比较,并提出了相关结论。

Based upon the requirements of the Shanghai central urban district planning and construction, the electric power overhead lines will be replaced by underground cables, providing an excellent environment for the grid reform, structure optimization and the simplification of voltage grades. Due to the incessant enhancement of the load density of the Shanghai central urban area, the prevailing 35 kV/10 kV/380 V distribution mode suffers from too many steps of voltage reduction. It is therefore necessary to introduce the distribution mode with the 35 kV directly transformed into 380 V. The analytical comparison between the 35 kV/380 V mode and the prevailing mode has also been described together with the conclusions reached.