Analysis On The Impact Of Distributed Generation On Distribution Network

Advantages are many other ways that are not distributed power generation exist, high security and reliability, can make up for lack of grid security stability, low loss and cost,peaking performance, optimization of existing energy supply mode, but inevitably We will have some defects.In this paper, distributed power development background, combined with the power system security and reliability of the grid, distributed power is first added to the new model of distributed power grid interconnection, and the simulation results and analysis of distributed power failure assumptions access into the grid system for the entire power system voltage stability, impact protection and other parameters, and the process is scheduled to run in to the distribution of the impact brought by the grid. Secondly researches distributed power grid standards, analyze the impact and differences between different distributed power connected to the grid in due course in different regions, when comparing different literature China in the future development of standards in distributed power systems connected to the grid during provide a reference. Finally, specific examples of numerical calculation, around the photovoltaic power affect the voltage, as well as protection against losses depth discussion, and propose solutions.By studying this subject, for different types of distributed power, its different types,different access capacity and location of the distribution network will have different degrees of impact. Through the power quality, power control, voltage and frequency response of comparing different power grid, grid synchronization, and other security and protection requirements, there are differences in different countries and regions, and standard network management and scheduling, the future of distributed power grid standards can use this as a guide. Effect of distributed photovoltaic power injected into the distribution network is multifaceted, including voltage characteristics, frequency, flow distribution, aspects of load characteristics, such as protection. When the same capacity photovoltaic power are connected to different nodes, the access capacity of different photovoltaic power, can cause varying degrees of impact on the node voltage grid networkloss and flow distribution, and the impact on system protection.