Research On Connection Mode Of Distribution Network In Shapotou District,Zhongwei City,Ningxia

In the literature,it is rarely discussed that how to design a reasonable wiring structure for a highly reliable single radial line.In fact,except for a few special cases,the single radial line is rarely constructed without any breakpoints after substation switch outlet.In order to improve power supply reliability and operational flexibility,we add switch devices in the trunk line to divide it into several segments.However,there is no explicit basis for how to divide the trunk line,choose the suitable switch device and link up the load.Usually,it mainly relies on the experience of planners.This thesis makes a study on this point,and classifies the connection modes of the single radial line into two types,i.e.cascade type and busbar type.We analyze and verify the pros and cons of these two type by calculation.By analyzing the distribution arrangement of Zhongwei Shapotou district,we propose the upgrade projects,organize the implementation,and achieve good effect as we expected.