| In recent years,with the development of the economy,the demand for power on the load side has been increasing.If the capacity transmission capacity of the transmission side is alleviated only by expanding the scale structure of the distribution system,it is obviously difficult to meet the demand.The new power distribution system has a large cost investment,a long construction period,some damage to the ecological environment,and the shortage of land resources,which makes the new distribution network project difficult to land.Therefore,it is very important to find a new method that can meet the current load growth needs and reduce the cost input of power companies without changing the structure of the existing power distribution system,and does not cause damage to the natural environment as much as possible.With the development of science and technology,demand side response and distributed generation are increasingly used in power systems.The demand side response technology plays an increasingly important role in mitigating the transmission pressure of the power distribution system due to the rapid response speed and convenient control.At the same time,the appropriate application of demand response technology and distributed power generation technology in the power distribution system can delay or reduce the construction of new power distribution systems and reduce the investment cost of power grid enterprises.Therefore,this paper proposes to integrate demand side response and distributed power generation into the power distribution system,using demand side response and distributed power generation closer to the load side,more flexible and convenient,and less environmental pollution.Find a distribution network optimization strategy that considers demand side response and distributed generation.First,this paper introduces the demand side response and the development of distributed power generation.For the demand side response to play a more active role in the distribution network,the classification and characteristics of demand response technology in the context of smart grid are further elaborated.Secondly,the appropriate nodes in the distribution network system to access the appropriate amount of demand side resources can effectively alleviate the transmission voltage of the distribution network and reduce the emission of pollutants on the power generation side.The unregulated and irregular access to the demand side resources will be counterproductive.It will not help to improve the transmission capacity of thedistribution system,but will further damage the stability of the distribution network system and reduce its transmission safety.Aiming at the impact of the demand side resources accessing the distribution network on the distribution network,this paper establishes a mathematical model of distributed generation,electric vehicles and interruptible load,and further analyzes the impact of the demand side response on the power flow of the distribution network system.Then,under the existing distribution network structure,based on the objective function of demand side resource cost,network loss cost,energy saving purchase cost and environmental benefit,a distribution network optimization model considering demand side response and distributed generation is established.According to the established optimization model,the particle swarm optimization algorithm is used to solve the model,and the flow of the PSO optimization algorithm to solve the model is analyzed.Finally,through MATLAB software programming,the proposed model is used to simulate the calculation of the established model in two typical distribution network systems: IEEE33 node distribution network system and US PG&E69 node distribution system.The simulation results prove that the optimal configuration model of the distribution network considering the demand side response and distributed power supply is feasible and economical. |
PDF Full Text Request