Design And Research On Monitoring System Networking And Monitoring Technology Of Photovoltaic Power Station Based On 5G Communication

With the increasing capacity of photovoltaic power stations(PVPS),the number of equipment and the area they occupy also increase,resulting in difficulties in operation and monitoring of PVPS.As a new generation of mobile communication technology,5G has greatly improved compared to 4G technology in various aspects.Therefore,combining 5G communication technology with the PV power plants can bring many performance improvements in terms of operational capability,security,and stability.Based on 5G communication,this thesis has completed the following research work:(1)The PV power plant application scenarios and application functions based on the current insufficient monitoring capability of PV power plants are analyzed and designed in this thesis,and a PV power plant monitoring system architecture based on 5G communication to meet the current needs of the power plant is designed.Based on the application scenarios,the network communication capabilities required for the scenarios are analyzed,and a 5G-based PV power plant networking architecture is designed.The feasibility and superiority of the new architecture are demonstrated by comparing it with traditional schemes.(2)The current control requirements of the PV power plants and designs a new internal control scheme for the power plant based on 5G-related technologies are analyzed in this thesis:First,A new bus net load prediction algorithm was designed based on area features,which is more targeted compared to traditional methods that use regional features to model separately;Second,the power allocation method based on sample inverter’s current power is proposed which is more safe than equal allocation;Finally,A new maximum power tracking method is proposed for inverter power climbing scenarios,combined with the Adam gradient algorithm.This method not only utilizes the low latency capability of 5G communication,but also reduces the local climbing process,allowing the inverter to quickly achieve power climbing.And the superiority of this method is demonstrated through simulation.(3)The current pain points in the PV power plant operation and maintenance is analyzed and the PV power plant operation and maintenance functions based on 5G-related technologies is designed.At the same time,a set of hot spot processing methods based on 5G unmanned aerial vehicles has been proposed to address the phenomenon of hot spots in photovoltaic panels.Functional modules such as data acquisition,link communication,and image processing have been designed.On the basis of the 5G architecture,a drone inspection process was introduced,and the images collected by the drone on the photovoltaic panel were processed and analyzed to obtain the temperature and area of the photovoltaic panel hot spot,thereby determining the condition of the photovoltaic hot spot.This method further analyzes the condition of the hot spot while detecting the hot spot,providing a judgment basis for subsequent hot spot processing.Finally,the feasibility of the method was demonstrated through simulation.At last,the research work conducted in this thesis are summarized and prospected.