Research On The Operation Optimization Technology Of Distribution Network For The Energy Internet

With the introduction of the concept of energy Internet in 2012,the energy Internet becomes the research focus around the world.The state grid has developed a construction schedule,which aims to achieve the energy internet plan by 2021.This paper studys on the operation optimization technology of distribution network for the future energy Internet,by adding electric energy router to the distribution network,calculating from the power flow and optimizing the power supply path of the distribution network with the electric energy router(EER).Firstly,the role of the EER itself in optimizing the operation of the distribution network is studied.In this paper,the structure of EER has been analyzed and the mathematical models of different ports,for power flow calculation,have been deduced based on the existing model of power electronic converter.Besides,by adding the EER,this paper makes changes to the existing distribution network,and then has a research on the method of steady state power flow calculation and derives the method in detail.By using the unified iterative method,based on the classic Newton method in polar coordinates,this paper has analyzed the voltage quality of the changed distribution network.Secondly,the effect of the distribution network power supply path containing the EER on the optimization of system operation is studied.The problem of power supply path,generated after the addition of the EER,has been analyzed.And then,this paper provides a method as a solution based on hierarchical agglomerative clustering method and fluorescent marking method.After that,the best path scenario has been found by the improved immune cloning algorithm.Finally,this paper has analyzed the power quality of the network after the addition of the EER,and the simulation example illustrates the effect of the method to the distribution network.Simulation results show that the addition of the EER can effectively improve the terminal voltage of distribution power system.The power supply path optimization methods presented herein,can effectively solve the problem after the addition of the EER and enhance the effect of optimizing the operation of distribution network.