Reliability Assessment Of Zhuji's Distribution System With Micro-Grids

Power distribution system is the direct supply of electricity to the user's system,the power supply reliability reflects the management level of the power grid,but also on the user's electricity demand has an important impact.This paper is mainly distributed power and load as a system,in the traditional distribution network based on the introduction of "micro-network" concept.In the practical application process,the microgrid can combine the energy storage device,the distributed power supply and the load organically together to change the single power supply structure of the traditional distribution network,and can form an independent small power grid for island operation.The traditional grid is intelligent,flexible and complex,so the traditional distribution network model and theoretical analysis methods have also changed.The reliability analysis of the distribution system with microgrid is the main content of this research.In the course of the research,the concept of microgrid,and its main characteristics of distributed power supply are analyzed in detail.At the same time,a new mathematical model of distribution system with microgrid is established.Considering the characteristics of intermittent distributed power supply,a combined power generation system with intermittent distributed power supply and a large enough storage capacity is proposed.The microgrid can continue to provide power for the load point when running on the island.At the same time,this paper studies the reliability index and reliability theory of distribution system,especially the analytical method and simulation method.There are some researches on microgrids at home and abroad,and this paper is based on the basis of this research on the micro-network characteristics and its operation in-depth study,and then its distributed power output power,system structure changes,the load is not The determinacy and the networking and reconstruction of the microgrid after the failure,and so on.In this paper,we propose a method to analyze the influence of the micro-Electrical system for reliability assessment.And through the theoretical study Zhuji distribution network actual case,etc.to the subject of the proposed model and the scientific and effective verification of the algorithm.