华海荣（江苏省城市规划设计研究院，南京市 210024）

Elementary Discussion on the Application of 20 kV Mid-voltage Power Distribution System

Hua Hairong（Jiangsu Institute of Urban Planning and Design，Nanjing 210024，China）

Abstract At present，the mid-voltage power distribution networks in our country are mainly 10 kV ones. With the development of the society，especially in the economically developed districts，the problems that the capacity of existing 10  kV power distribution system is small and the loss is great are increasingly emerging，which is difficult to bear drastically ascending  electricity load. Compared with traditional 10  kV power distribution networks ，the voltage of 20  kV power distribution net has the advantages of saving investment，saving land use，energy-saving and decreasing corridor，etc.，which can not only increase power supply capacity and reduce power loss by 75%，but also has remarkable environmental protection benefits. 

Key words Mid-voltage power distribution 20 kV system Resources saving

摘 要 目前我国中压配电网基本以10kV为主。随着社会的发展，特别在经济发达地区，现有的10kV配电系统容量小、损耗大等问题日益突出，已经很难承受急剧增长的用电负荷。与传统的10 kV配电网相比，20 kV配电网具有节约投资、节约用地、节约能源、减少走廊等优点，不但可以增加供电能力，降低75% 的电力损耗，还具有显著的环保效益。

关键词 中压配电 20kV系统 节约资源