Research On Layout And Cluster Control Optimization Of Distributed Photovoltaic Micro-power Station

At present,countries around the world are constantly promoting the transformation of energy structure and building new energy power stations,in order to solve the current situation of energy depletion and environmental problems.Distributed photovoltaic has been widely paid attention to because of its high safety,flexible installation,low construction cost,fast cycle,convenient maintenance and non-pollution,,And distributed photovoltaic has become the important development of new energy technology.However,in the practical application of distributed photovoltaic,which access to the distribution network,the new problems has also brought,such as lack of power buffer capacity,lack of unified layout planning,lack of unified management and scheduling.In this paper,the structure and operation mode of photovoltaic micro-power station are first determined.According to its structural characteristics and operation requirements,the modeling of photovoltaic power generation system and energy storage system in micro-power station are carried out,and appropriate control strategies are selected.The simulation model of distributed photovoltaic micropower station connected to distribution network is built,to verify the feasibility and effectiveness of the distribution micro-power station which has built in this paper.Then,the cluster operation of distributed photovoltaic micro-power station is studied.In the distribution network with constant load distribution,the mathematical model of layout optimization objective and constraint function is established.In order to minimize the network loss of distribution network,the line layout of distributed photovoltaic micro-power station is carried out,and the particle swarm optimization algorithm is used to solve the problem.At the same time,according to the real-time generated electrical energy of photovoltaic power system,Battery storage status andload fluctuation of distribution network,the access position and single unit capacity of distributed photovoltaic micropower station with minimum network loss are solved.The mathematical model of optimization objective and constraint function of cluster operation control is established,and a cluster control optimization scheme aiming at minimum network loss is proposed.Particle swarm optimization is used to realize the dynamic power output of the energy storage system under the minimum network loss in a given time.Finally,according to the special monitoring and dispatching requirements of the distributed photovoltaic micro-power station cluster system,the hardware platform of the photovoltaic micro-power station cluster monitoring system is designed,which realizes the measurement of operation data,the establishment of communication network,and the control and dispatch of each photovoltaic micro power station.In this paper,the shortage of distributed photovoltaic power distribution network in the current practical application is overcome,the stable operation of the distribution network is better maintained,the advantages of distributed photovoltaic are fully exerted.In this paper,the basis for further research of the distributed photovoltaic cluster is provided,and the new idea is provided for the development of the distributed new energy power generation.