Research On Photovoltaic Absorption Capacity Of Active Distribution Network

Due to the environmental pollution caused by the continuous consumption of traditional fossil energy,and the depletion of traditional fossil energy,in this context,energy conservation and emission reduction and green environmental protection become the driving force to promote the development of renewable clean energy.As one of the main forms of renewable clean energy power generation,distributed photovoltaic power generation is intermittent and uncertain due to the influence of solar illumination,and its output power has great volatility.When a large number of distributed photovoltaic power is connected to the distribution network,it is bound to bring adverse effects on the power quality of the distribution network and seriously affect the stable operation of the distribution network.In this regard,in order to solve the problem of voltage fluctuation caused by distributed photovoltaic power access to the distribution network,improve the power quality of the distribution network,this paper will carry out the research on the photovoltaic accommodation capacity of active distribution network,study the impact of distributed photovoltaic power access voltage,photovoltaic accommodation capacity and voltage regulation strategy The main contents of this paper are as follows:First,the impact of distributed photovoltaic power access on the voltage of distribution network is studied,and the basic model of distributed photovoltaic power and the relevant model of active distribution network are established.The impact of distributed photovoltaic power access on the voltage of distribution network is analyzed by changing the access amount and location of different distributed photovoltaic power,and the corresponding laws are obtained through the corresponding simulation The research content is a foreshadowing.Secondly,after the distributed photovoltaic power is connected to the distribution network,the photovoltaic accommodation capacity of the distribution network is evaluated.The content includes the establishment of the basic model of the active distribution network,the access of distributed photovoltaic power,the theoretical analysis of the voltage deviation and system loss of the active distribution network,the evaluation model of distributed photovoltaic power consumption,and the corresponding conclusions through simulation.Thirdly,the consumption capacity of distributed photovoltaic power in active distribution network is optimized.It includes the optimization model of photovoltaic accommodation capacity of active distribution network and dynamic adaptive particle swarm optimization algorithm.The dynamic adaptive particle swarm optimization algorithm is used to calculate,and the optimized results are compared with the results of the original evaluation model.The accurate evaluation results are obtained and verified by simulation.Fourthly,the above voltage control strategy is studied after the distributed photovoltaic power is connected to the active distribution network,and the voltage regulation is carried out through the above evaluation results to maximize the energy utilization of the distributed photovoltaic power.The content includes voltage analysis,voltage control strategy and simulation verification.