Study On Distribution Network Comprehensive Optimization Based On Timing Characteristics And Demand Side Management

The scale of distribution network is increasing day by day,and traditional single power supply mode can hardly support the whole network.At the same time,energy shortage and environmental crisis has intensified the requirements of the system.Distributed energy has the advantages of low pollution,low energy consumption,renewable resources,etc.and demand side management technology can adjust the power consumption patterns to ease the power supply tension,cut down peak load and fill up valley load,and stabilize the power grid peak load.Comprehensive utilization of the two sides is an important trend in the development of smart grid.Firstly,this thesis analyzes the application and research status of distributed generation and demand side management.Besides,it summarizes the advantages and limitations of the previous studies.In order to further improve the system optimization process;this paper adopts the analysis method of the combination the distributed generation timing characteristics and the demand side management economic means.Secondly,according to the peak-valley time period partition of the load and time-of-use price theory,combining with the timing characteristics,a year is divided into four seasons five times.Network loss minimum has been chosen as the objective function to model in the wind/solar hybrid generation system.It is used to determine the best installation position and capacity of the distributed generations.IEEE33 bus network has been chosen as example.Simulation results show that the proposed method is reasonable and effective.Finally,in the distributed generation system,through introduction of interruptible load mechanism,this paper establishes comprehensive optimization model with network loss cost,interruptible load compensation and electricity saving.Through the calculation of distributed generation output value in each period,it can increase the comprehensive resources utilization rate,reduce the line loss,enhance wind/solar hybrid generation rate and optimize Power Company operating efficiency.