Distribution Network Reliability Assessment Considering Distributed Generation

The world today is the gradual depletion of fossil energy,the energy crisis has become increasingly prominent,the rapid economic growth is the price of high-quality environmental sacrifice,and began to clean distributed energy generation concern,attaches great importance to the world.Now the rapid development of distributed generation technology,has been wide ly used and in real life,the energy use efficiency significantly improved,to ease the peak pressure is made an important contribution,also has ten great significance for environmental protection and sustainable development of energy.The distributed pow er access to distribution system,will change the structure of distribution system,the operation mode changes correspondingly,with power plays a more and more important role in the national economy and people's daily life,the reliability of power supply and distribution system,has become a focus of relevant experts and scholars.To sum up,to evaluate the reliability of distribution network with distributed power,is an important topic worthy of study and exploration,for the development of new green energy distribution system,network planning,network structure and other new transformation have played a positive role in promoting.This paper first introduces the concept of distributed power,influence the characteristic of the distributed power supply type and distributed power access to distribution network one by one in detail;elaborated the domestic and foreign experts and scholars of research ideas and results obtained,described the research status of reliability evaluation of power grid with distributed power are introduced;the reliability indices of distribution network and distribution network reliability evaluation methods and characteristics;considering distributed generation access to distribution network,and its mode of operation,to establish a mathematical model for reliability evaluation of grid connected distributed generation,distribution network reliability evaluation of distributed power are analyzed,the reliability evaluation method and steps of the distribution system for a comprehensive understanding.Finally,the actual working conditions of power supply reliability in the region are introduced,combined with the characteristics of Zhangjiakou power grid and the practical application,and puts forward some practicable strategie s and suggestions,improve the reliability of power supply in the area of distribution network to help.