Analysis And Research Of Distribution Automation And Automation Technology Of Distribution Substation

Distribution substation is an important component part of distribution net; therefore, the automation degree of distribution substation can directly reflect the level of distribution automation. The comprehensive automation of local substation is one of the most important content of the automation system of distribution net, is also one of the most difficult task. According to the features of local substation, such as large-scale network and points, scatter distribution, old-fashioned equipment, much information and complex communication network, it has great economic benefit to search for a kind of comprehensive automation equipment which has less investment, higher efficient and convenient and reliable character, at the same time, the equipment should adapt to the environment of local substation. This paper discusses the design of the distribution automation and its equipment—net instrument. The instrument is based on the idea of module; it is consist of main-control module, sampling-measurement module, display module, switch-control module ,trouble-record module and the upper computer. The supervisory and controlling procedure of upper computer is edited by VB and C++; this procedure can analyze all results, handle all switches and manage electric power charges. The user can make up the system of different scale according to different requirement.This paper has five chapters. The second chapter introduces the main content of distribution automation. The third chapter introduces the fundamental demand of distribution substation automation. The forth chapter introduces the design of circuit diagram of the automation equipment of distribution substation—net instrument. It elaborates the function and composes of main parts. The fifth chapter is the design of software program.