Research On The Dynamic Construction Scheme Of Typical Mode In Distribution Network

State Grid released typical power supply mode library based on the different power supply area(A+,A,B,C,D,E)in 2014,in order to guide the standardized construction of distribution systems.Along with the development of urban and rural economy,the distribution systems construction should meet the requirement of optimal economy and reliability as well as other targets.In addition to study technical index of the connection and supply mode of distribution network alone,the construction of dynamic mode should also be considered,namely,a type of mode transit to another mode under certain conditions.This article is mainly to conduct a further study of dynamic and optimized construction which is based on typical power supply mode.This paper studies the dynamic construction of typical power supply mode,including two aspects as following:1)construction situation of typical connection mode in different power supply areas,dynamic construction considers the developing changes at the early stage,the developing stage and perfecting stage respectively.Analyzing the characteristics of typical connecting patterns for the connecting pattern of vision mode in different power supply areas is to summarize the development path of typical connecting pattern in the construction of distribution network,which is the basis to formulate the transit path further of connecting patterns and giving examples;2)construction situation of typical power supply mode in different power supply areas,comparing and selecting the dynamic construction projects that develop to the target power supply mode using technique-economy-analysis method to find out the optimal upgrade path,providing the development of power supply mode in distribution systems with theoretical basis.The smallest unit of planning year proposed in this paper successfully avoids the complex problem of changing load density compared with minimum unit load annual fee method,which and makes the calculation idea clearer.Case studies show that the optimal dynamic construction route is escalating.