Research On Distributed Photovoltaic Plant Monitoring System Based On LabVIEW

In view of the confusion of the operation and maintenance of the photovoltaic power station,the establishment of the PV power station monitoring system can help the normal operation of the photovoltaic power station,and can further promote the construction of the orderly industry standard of the solar photovoltaic power station market.The monitoring system can accurately locate the problems of photovoltaic cells,improve the efficiency of power generation in time,and ensure a good man-machine interface,so as to facilitate data processing and function operation.Through the research on the development of solar photovoltaic power station monitoring at home and abroad,this paper analyzes the positive influence of the research on the monitoring and research of the photovoltaic power station for the whole photovoltaic power generation industry,and carries out the research of the distributed PV power station monitoring system.In this paper,the climate resources of the project research area are analyzed to analyze the impact of climate change on the efficiency of photovoltaic power generation.For the decrease of photovoltaic efficiency,it is necessary to distinguish between the substantial damage of the photovoltaic component equipment or the influence of the weather environment.According to the parameters of the photovoltaic power station in the project,PVsyst software is used to verify the optimality of the parameters such as the tilt angle,azimuth angle and the distance between the front and back of the PV array.The output of PV power station is calculated and the output properties of PV power generation are obtained by modeling and simulation.This paper focuses on the overall research plan of distributed photovoltaic power station monitoring system,including hardware and software.The hardware part selects suitable voltage sensor and data acquisition card for the actual situation in the research area.According to the characteristics of hardware equipment,the use and connection mode of equipment are designed.Through software LabVIEW,the landing procedure,software communication program,digital filtering program and monitoring main interface program are designed.The monitoring main interface includes 5 functions: real-time data acquisition,data storage,data report printing,data playback and data query.Through the testing of the distributed photovoltaic power station monitoring system,the results show that the tilt angle of the photovoltaic power generation board affects the efficiency of the photovoltaic power generation.At the same time,it proves that the designed system is reasonable and effective to detect the data of each channel and monitor the normal operation of each part of the main interface.