Research On Optimal Operation Of Distribution Network With Distributed Generation

With the global energy crisis and environmental pollution problems become increasingly prominent,distributed power generation technology began to attract the attention of countries around the world.With the continuous development of new energy,more and more distributed power supply access to the distribution network,so that the operation of the distribution network has undergone profound changes.Distributed distribution network with distributed power supply is an important optimization problem in power system.Because of the difference of power supply characteristics and operation mode between distributed power supply and traditional power grid,the optimal method of load distribution is not the same.How to effectively improve the operation of the distribution network economy,reliability,the development of distributed power supply and reliable operation of the distribution network has important significance.In view of this problem,on the basis of studying the relevant literature at home and abroad,this paper has carried on the following research:(1)Firstly,this paper introduces the background and characteristics of distributed power supply,the current situation of domestic and foreign research and future development prospects.Then,the classification of distributed power supply is introduced,and the power generation form and technical characteristics of the most commonly used distributed power supply,wind power generation and solar photovoltaic power generation are introduced in detail;(2)Secondly,the general principles,technical requirements and advantages and disadvantages of large-scale high-permeability photovoltaic access grid are studied.The influence of large-capacity centralized PV on the power flow of local power grid is studied.In this paper,distributed power supply operation,including the development of new energy power plants,photovoltaic development and power consumption situation,and power generation characteristics were analyzed;(3)Last,the power characteristics of wind power and photovoltaic power generation are analyzed,and the power forecasting method of wind power and photovoltaic is introduced in detail.The fuel cost of distributed power supply is modeled and the optimal dispatching of distributed power supply fuel is taken as the goal.Based on the particle swarm optimization algorithm,the optimal dispatching model of distributed power distribution network is studied,and the case is studied.With the continuous popularization and development of distributed power supply,the optimal allocation method of load will be more and more perfect.It is reasonable to plan distributed power supply distribution network,which will help the distribution network reduce network loss,improve the voltage level and reduce the distribution Net investment and pollution of gas emissions,with significant economic and environmental benefits.