苏立康（福建省德化县建筑勘察设计所，福建省德化县 362500）

闫 冰（上海工程技术大学城市轨道交通学院，上海市 201620）

Power Distribution Mode of Medium Voltage Terminal User and Selection of

Correlative Electric Appliances

Xie Wei （Suzhou Guangsha Architectural Design Institute，Suzhou 215006，Jiangsu Province，China）

Su Likang（Fujian Dehua Architectural Survey and Design Institute，Dehua County 362500，Fujian Province，China）

Yan Bing（College of Urban Railway Transportation，Shanghai University of Engineering Science，

Shanghai 201620，China）

 

Abstract The original 10 kV grid terminal user adopts emanant type，and the floor area of transformer centralized power supply and distribution mode is very large，high investment，low reliability and high energy consumption，which shows the significance and necessity for medium voltage grid to use ring network and transformer distributed power supply. The difference between breakers and load switch - fuse in the protection of terminal user transformers is compared. The reasonable choice of transformers is analyzed so as to achieve energy - saving and environmental protection.

Key words Centralized power supply and distribution Distributed power supply and distribution Load switch - fuse 20kV Energy-saving Environmental protection  

 

摘 要 原有10kV电网终端用户采用放射式、变压器集中供配电方式占地面积大、投资高、可靠性低、不节能，指出中压电网采用环网、变压器分布式供电的重要性及必要性，比较了断路器和负荷开关 - 熔断器在保护终端用户变压器上的差异，对变压器的合理选用做了分析，以求做到节能和环保。

关键词 集中式供配电 分布式供配电 负荷开关 - 熔断器 20kV 节能 环保