However, at the distribution level, 'tie switches are used to switch feeders or feeder sections between transformers in the same station, or to adjacent substations for substation transformerload.
The equivalent resistance is derived for distribution transformerload loss and line loss of planning grid, and the maximum current is calculated for each feeder according to their capacity ratios.
推导出规划网架的线路损耗和配变负载损耗的等值电阻,利用馈线容量比值估算馈线最大电流。
3
Because according to the current load level a city has generally thousands of distribution transformer and box transformer.