Research On Optimal Allocation Of Photovoltaic Power In Distribution Network Based On Improved Weed Algorithm

With its advantages of less pollution and strong sustainability,photovoltaic power has become an important development direction of new energy in the future.When photovoltaic power supply is connected to the distribution network,the traditional distribution network will change from a simple single-side power supply and radiation network to a complex multi-power network structure,which will easily cause short-circuit fault,voltage instability,power quality reduction and other problems,affecting the reliability,stability and sensitivity of the relay protection system.Optimizing the grid location and grid capacity of photovoltaic power supply can reduce the loss of distribution network and improve power quality,which is of great significance to the efficient operation of distribution network.Firstly,this paper analyzes the research status of photovoltaic power access influencing solutions and optimal algorithm of distributed power supply configuration at home and abroad,and proposes the research direction of photovoltaic power supply optimal configuration integrating the influence of various factors and algorithm improvement.And then through the analysis of the photovoltaic(pv)power supply of distribution network protection,current,power quality,network loss,the influence of such factors as think reasonable configuration,photovoltaic power supply is beneficial to improve permeability of photovoltaic power supply,to reduce the power loss and improve the distribution network operation condition,build constraint condition,for the next good theoretical basis for the optimization model.Thirdly,the feasibility of combining the intelligent weed algorithm with the research content of this paper is analyzed.Based on the traditional weed algorithm,the improved weed algorithm with scattered seeding and chaotic disturbance quantity is proposed,and the simulation demonstration is carried out.Fourth,by choosing permeability photovoltaic power supply,power distribution network loss and voltage period such as indicators of the weighted value as the target function,the short circuit characteristic of photovoltaic(pv)power,with power flow,a distributed power supply capacity and three-step current protection sensitivity as constraint conditions.establish with photovoltaic power constrained multi-objective optimization model of distribution network optimization configuration;Then,taking the eee33 node system as an example,the improved weed algorithm was used to optimize the capacity and location of distributed power supply in the distribution network containing photovoltaic power.Results show that the improved algorithm of weed to establish with photovoltaic power supply of the resource configuration optimization of distribution network are applied to solve the multi-objective optimization model to get the reasonable configuration scheme,photovoltaic power supply can effectively increase the permeability of photovoltaic power supply voltage quality,reduce the power loss and improve the distribution network,prove that this method has the feasibility and superiority.