Application Of Particle Swarm Optimization Algorithm In Optimal Dispatch Of Distribution Network

Distributed generation has the characteristics of high efficiency ADN environmental protection,so the wide application of distributed generation is the development trend in the 21 st century.However,the control mode,operation mode ADN management mode of distributed generation technology are different from those of traditional distribution network,which brings challenges to the dispatching of distribution network.At the same time,with the weak stability of distributed generation technology ADN the complex control system,more ADN more distributed generators are connected to the distribution network,which gradually shows up.In order to make distribution network dispatching more suitable for the development trend of distribution network,it is very important to study new optimal control methods for distribution network dispatching.Firstly,the basic model of distribution network is studied,ADN the mathematical model of basic components of distribution network is introduced.Considering that the application of Distributed Generation(DG)is more ADN more extensive,this paper establishes a mathematical model based on the existing mainstream distributed generation devices.On this premise,their respective operation characteristics ADN related output constraints are analyzed.Load characteristics are indispensable to the analysis of distribution network.Next,five typical load scenarios are designed,ADN the role of distributed generation in distribution network dispatching under five typical scenarios is analyzed.In this paper,33-bus distribution system is taken as an example,ADN each power supply is reasonably allocated based on the demADN of inter-load.After completing the system modeling of the whole distribution network,the optimal dispatching of the distribution network with DG is abstracted as an optimization problem with non-linear variation,ADN the active power of each DG unit is taken as an independent variable,ADN the mathematical model of the problem is established with the objective strain of minimizing the weighted sum of system loss ADN comprehensive operation cost.Then,based on the improved particle swarm optimization algorithm with weights,the problem is solved by MATLAB programming,ADN the 24-hour output curve of each distributed power supply is obtained,which provides a reliable basis for scheduling plan.Finally,the model ADN algorithm of the subject are optimized,analyzed ADN evaluated,ADN more convincing results are obtained which are in line with the actual operation situation.