Research And Development Of Distributed Photovoltaic Power Station Monitoring And Energy Efficiency Analysis System

The global environmental pollution and energy shortage are becoming more and more serious,which urges people to vigorously develop and utilize renewable clean energy.Due to the good environmental and economic benefits of solar photovoltaic power generation,the industry has been developed rapidly with the full support of local governments and the favor of social capital.In recent years,the investment and construction of distributed photovoltaic power station has developed rapidly,which occupies a large share in the whole photovoltaic industry.In order to grasp the generation efficiency of grid connected distributed photovoltaic power station in real time and know the operation status of key equipment in power station in real time,it is necessary to carry out intelligent monitoring and energy efficiency analysis for grid connected distributed photovoltaic power station.Aiming at the difficult problem of the current efficiency calculation method of grid-connected distributed photovoltaic power station system which is complex and not practical enough,this paper proposes a simple and rapid model which can be used in engineering practice to estimate the efficiency of grid-connected distributed photovoltaic power station system based on the analysis of the factors affecting the energy efficiency of photovoltaic power station.According to the characteristics of grid connected distributed photovoltaic power station monitoring data,such as strong real-time,many kinds,scattered access points,and the amount of data collected,a data acquisition server based on asynchronous I/O model is proposed;After in-depth analysis and comparison of monitoring technology and software development technology,based on the characteristics of distributed photovoltaic power station,it is proposed to collect the data of photovoltaic power station through ZigBee technology,use 4glte network for data transmission,and finally use advanced and mature software framework and development technology for system design and development to realize monitoring and energy efficiency analysis of photovoltaic power station.The software system designed in this paper is a comprehensive information system integrating monitoring data acquisition and energy efficiency analysis,including distributed photovoltaic power station real-time data acquisition,power station information management,operation monitoring,energy efficiency display,alarm notification,query statistics and other functions.Through real-time monitoring data analysis and efficiency measurement of photovoltaic power station,this system can quickly locate the abnormal efficiency of each link of photovoltaic power station,provide strong support for operation and maintenance,and thus improve the intelligent management level of distributed photovoltaic power station.Through the comprehensive analysis of the efficiency of a large number of distributed photovoltaic power station systems,the important factors affecting the efficiency of photovoltaic power station systems can be obtained,which will provide an auxiliary decision-making basis for the investment and construction of distributed photovoltaic power stations in the future.