Design Of Remote Monitoring System For Photovoltaic Module Environment

In order to improve the efficiency of photovoltaic power generation and reduce the cost of maintenance and operation,this paper focuses on the impact of dust accumulation on the efficiency and efficiency of photovoltaic power generation by setting up a remote monitoring system of photovoltaic module environment.It can optimize the dust cleaning frequency of photovoltaic power generation to improve the efficiency of photovoltaic power generation in combination with the dust cleaning cost of photovoltaic power generation.This paper describes the influence factors of environmental parameters of photovoltaic modules on the efficiency of photovoltaic power generation,the influence of dust on the performance of photovoltaic modules,the existing methods of dust cleaning and the best period of dust cleaning.According to the analysis of system requirements,the overall design scheme of remote monitoring of photovoltaic module environment is given.System structure design: wireless sensor network includes dust monitoring based on frequency-domain anti stray light interference,light intensity monitoring based on photoresist,temperature and humidity monitoring based on SHT15 sensor,air pressure monitoring based on MPX4250 sensor,wind speed monitoring based on HS-FS01 sensor and wind direction monitoring based on HS-FX02 sensor.The control module adopts STM32F103R6 single chip microcomputer to control the signal acquisition of wireless sensor network terminal node.The communication module uses SZ-ADV-CC2530 to complete the wireless signal receiving and transmitting,collects the wireless sensor network to the coordinator node,controls the router and RS485 serial port through the wireless gateway to complete the data communication and send it to the upper computer for display.Test platform construction: using Proteus 8.9 software to complete the hardware circuit design,using Keil uVision5 software to complete the programming and compilation.On the basis of completing the system circuit simulation and debugging,combined with the V-SUN-S4000 power generation training device in the laboratory,the test system platform is built,and the photovoltaic module environmental parameter monitoring system is debugged.Physical platform test: test the effect of dust accumulation on the power generation efficiency of photovoltaic modules by modulating light source.By using the docking method with the Intelligent Cloud Internet of things platform,the remote monitoring of environmental parameters such as lighting,dust shielding,temperature,humidity,power,wind speed,wind direction,air pressure of photovoltaic modules has been completed,and the functions of data acquisition,such as PC upper computer and mobile app display,real-time data monitoring,historical data query,etc.have been realized.Analysis of experimental results: through the monitoring system platform,the environmental parameters of photovoltaic modules can be monitored.The dust cover monitoring adopts the frequency-domain anti stray light interference measurement mode,which is different from other studies.It can eliminate the interference of light intensity changes in the natural environment,and it can monitor the dust cover all the time without relying on the natural light,so as not to affect the operation of photovoltaic power generation in time Provide reference for dust management.