城市220 kV变电站低压直配能力提升方法的研究  

Study on Methods to Improve Low Voltage Direct Distribution Capability of Urban 220 kV Substations

作　　者：岳龙飞 YUE Longfei(Shenzhen Power Supply Planning and Design Institute Co.,Ltd.,Shenzhen 518000,China)

机构地区：[1]深圳供电规划设计院有限公司,广东深圳518000

出　　处：《电工技术》2024年第17期97-99,共3页Electric Engineering

摘　　要：深圳经济建设的高速发展带来了电力需求的快速增长,为满足电力供应需求,需加大电网建设、扩大电网规模,但深圳土地资源已十分紧缺,电网建设发展受到严重制约。随着深圳市电力负荷总量及密度的不断增长,最新220 kV变电站建设准则已要求深入负荷中心。为提升深圳220 kV变电站低压侧直配能力,提出采用低压侧为双分支的新型变压器,可在很大程度上解决此问题,同时对低压侧出线数计算进行了研究并通过工程实例进行验证,为220 kV站点供电模式提供更多选择,提高设备利用率。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.However,Shenzhen′s land resources are already very scarce,and the development of power grid construction is severely constrained.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 220 kV新型变压器 低压侧双分支 直配能力提升 

分 类 号：TM715[电气工程—电力系统及自动化]