Design And Implementation Of Photovoltaic Remote Monitoring System Based On B/S Architecture

Generally,the distributed photovoltaic power generation systems are located at remote places with harsh environments and few professional workers.Therefore,in order to monitor operating parameters of the whole power generation system,it's necessary to design a safe and reliable monitoring system.This is of great importance to maintain the normal operations of the photovoltaic power generation system,improve its unattended capability and promote the development of more complex distributed monitoring systems.Based on this,the thesis designs a photovoltaic power remote monitoring system with B/S,making the generation operating parameters and management information be published in real time on the browser.The overall design of the system is given and divided into the monitoring platform and the inverter control system,according to the system structure and functional requirements.The remote monitoring platform based on B/S is designed in detail.Considering the system structure,the use of various Web development frameworks reduces the coupling between the system layers,and improves system security.The user interface is built and optimized by the dynamic pages technology and third-party plug-in libraries,and information is refreshed in real time.Furthermore,the database is established according to the E-R model,and the serial communication protocol between the monitoring platform and the control board of inverter is also designated.On this basis,the thesis designs system foundation,login operation,system monitoring,report generation and online communication functional modules,and achieves the remote data distributions and managements.The inverter control system is designed according to the system requirements.The microprocessor selecting and hardware circuits building are based on system requirements.In addition to writing the main program and interrupt programs,the MPPT control algorithm is added to maximize output power.Thus,the control system can collect power generation parameters,receive instructions and send data back to the monitoring platform.The system test platform is set up,and the monitoring platform and the inverter control system test schemes are given.The whole systems are tested separately and totally.The results show that the remote monitoring control system can operate normally.