The rapid development of Shenzhen's economy has brought about a rapid increase in electricity demand.In order to meet the demand for electricity supply,it is necessary to increase the construction and scale of the power grid.Howev-er,Shenzhen's land resources are already very scarce,and the development of power grid construction is severely con-strained.With the continuous growth of the total and density of power load in Shenzhen,the latest construction guidelines for 220 kV substations have required deepening the load center.In order to improve the low-voltage side direct distribution capability of Shenzhen 220 kV substations,this paper proposes the use of a new type of transformer with dual branches on the low-voltage side,which can solve this problem to a large extent.At the same time,in-depth study has been conducted on how to calculate the number of low-voltage side outgoing lines and verified through engineering examples,providing more choices for the power supply mode of 220 kV substations and improving equipment utilization.
关键词
电网建设/220kV新型变压器/低压侧双分支/直配能力提升
Key words
power grid construction/new-type 220 kV transformer/low voltage side dual-branch/improved direct distri-bution capability
万方数据