Research On The Typical Topology Of Distributed DC Raction Power System

In today's rapid economic development,energy problem has become one of the problems which people can not ignore.The demand for energy is more and more big,at the same time also on the various aspects of energy performance put forward higher requirements.From the face of the energy development in recent years,distributed new energy because of its small pollution level,consumption level is low,easy to use,and many other advantages,more and more get the favour of many industries.As an important part of the world's energy mix,distributed the development and utilization of new energy has very important significance,energy to build a conservation-minded society,realize the sustainable development of the society play a very important role.Due to the present stage,the advantage of the dc power supply and its technological development characteristics,can very good solve the problem of the current in the process of urban power distribution network,and can also meet the requirements of the future urban development.We can found that dc power supply system,by this way can effectively apply to the use and development of distributed energy,for the study of the modern distribution network to provide better support,in order to guarantee the electrical energy transmission of the city,providing the guarantee of reliability and safety.In this paper,typical topology is applicable to the dc traction power system of distributed new energy,the main contents include: first,through the dc power supply system is suitable for distributed new energy were studied Dc power supply system,this paper analyzes the advantages and applicability,the purpose of this study is put forward,that is applicable to dc power supply system of distributed new energy analysis.New energy,and the distributed dc power supply system analysis of the status quo at home and abroad.Then the typical dc power distribution network topology analysis.Basic topology structure of dc micro grid mainly include: distribution on both ends of the radial,ring and,respectively,to a concrete analysis of their advantages and disadvantages and applicability,mainly from the aspects such as stability,reliability and economy of dc power supply system of the typical topology characteristics were analyzed,and the comprehensive evaluation,and put forward feasible topology structure.After using Matlab simulation analysis,and through the different types of topological structure of the dc traction power system to accept different types distributed is used to evaluate the characteristics of the new energy.The simulation analysis is applicable to different types of power supply,load acceptance of different types of distributed new energy when the optimal topology structure;Finally,the topological structure reliability and safety analysis.